Confined Spaces in Construction, 25365-25526 [2015-08843]
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Part II
Department of Labor
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Occupational Safety and Health Administration
29 CFR Part 1926
Confined Spaces in Construction; Final Rule
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Federal Register / Vol. 80, No. 85 / Monday, May 4, 2015 / Rules and Regulations
[Docket ID–OSHA–2007–0026]
document are available at https://
www.regulations.gov. Electronic copies
of this Federal Register document, as
well as news releases and other relevant
documents, are available at OSHA’s
Web page at https://www.osha.gov.
SUPPLEMENTARY INFORMATION:
RIN 1218–AB47
Table of Contents
DEPARTMENT OF LABOR
Occupational Safety and Health
Administration
29 CFR Part 1926
Confined Spaces in Construction
Occupational Safety and Health
Administration (OSHA), Labor.
ACTION: Final rule.
AGENCY:
OSHA is adding a new
subpart to provide protections to
employees working in confined spaces
in construction. This new subpart
replaces OSHA’s one training
requirement for confined space work
with a comprehensive standard that
includes a permit program designed to
protect employees from exposure to
many hazards associated with work in
confined spaces, including atmospheric
and physical hazards. The final rule is
similar in content and organization to
the general industry confined spaces
standard, but also incorporates several
provisions from the proposed rule to
address construction-specific hazards,
accounts for advancements in
technology, and improves enforceability
of the requirements.
DATES: The final rule becomes effective
on August 3, 2015.
ADDRESSES: In accordance with 28
U.S.C. 2112(a), the Agency designates
Ms. Ann Rosenthal, the Associate
Solicitor of Labor for Occupational
Safety and Health, Office of the Solicitor
of Labor, Room S4004, U.S. Department
of Labor, 200 Constitution Avenue NW.,
Washington, DC 20210, to receive
petitions for review of the final rule.
FOR FURTHER INFORMATION CONTACT:
General information and press
inquiries: Mr. Frank Meilinger, Office of
Communications, Room N3647, OSHA,
U.S. Department of Labor, 200
Constitution Avenue NW., Washington,
DC 20210; telephone (202) 693–1999;
email meilinger.francis2@dol.gov.
Technical information: Ms. Jessica L.
Douma, Directorate of Construction,
Room N–3468, OSHA, U.S. Department
of Labor, 200 Constitution Avenue NW.,
Washington, DC 20210; telephone (202)
693–2020 or fax (202) 693–1689; email
douma.jessica@dol.gov.
For additional copies of this Federal
Register document, contact: OSHA,
Office of Publications, U.S. Department
of Labor, Room N3101, 200 Constitution
Avenue NW, Washington, DC, 20210;
telephone (202) 693–1888. Electronic
copies of this Federal Register
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SUMMARY:
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I. Executive Summary
A. Introduction
B. Need for Regulation
C. Affected Establishments
D. Benefits, Net Benefits, and Cost
Effectiveness
E. Compliance Costs
F. Economic Impacts
G. Final Regulatory Flexibility Analysis
II. Background
A. Record Citations
B. History
C. Need for a Rule Regulating Confined
Spaces in Construction
III. Summary and Explanation of the Final
Standard
1926.1201—Scope
1926.1202—Definitions
1926.1203—General Requirements
1926.1204—Permit Required Confined
Space Program
1926.1205—Permitting process
1926.1206—Entry permit
1926.1207—Training
1926.1208—Duties of Authorized Entrants
1926.1209—Duties of Attendants
1926.1210—Duties of Entry Supervisors
1926.1211—Rescue
1926.1212—Employee Participation
1926.1213—Provision of Documents to the
Secretary
IV. Agency Determinations
A. Legal Authority
B. Final Economic Analysis and Regulatory
Flexibility Analysis
1. Introduction
2. Need for Regulation
3. Profile of Affected Industries
4. Benefits and Net Benefits
5. Technological Feasibility
6. Costs of Compliance
7. Economic Feasibility and Regulatory
Flexibility Determination
8. Final Regulatory Flexibility Analysis
9. Sensitivity Analysis
10. References
C. Office of Management and Budget
Review Under the Paperwork Reduction
Act of 1995
D. Federalism
E. State-Plan States
F. Unfunded Mandates Reform Act
G. Consultation and Coordination With
Indian Tribal Governments
H. Applicability of Existing Consensus
Standards
V. Authority and Signature
VI. Amendments to Standards
I. Executive Summary
A. Introduction
OSHA last issued rules addressing
work in confined spaces in 1993;
however, those provisions applied only
to general industry work. A single
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training provision, issued in 1979,
applies to confined space work in
construction. Following the
promulgation of the general industry
rule, OSHA agreed to propose a
standard for confined spaces in
construction as part of a settlement of a
legal challenge filed by the United
Steelworkers of America. After
consulting with the Advisory
Committee for Construction Safety and
Health (ACCSH) on a draft, and holding
several stakeholder meetings in
locations across the country, OSHA
developed a draft and conducted a
Small Business Advocacy Review Panel
(SBAR Panel) in 2003. The Agency
published its proposed rule for confined
spaces in construction on November 28,
2007 (72 FR 67351). The proposal
incorporated feedback from ACCSH, the
stakeholder meetings, and the SBAR
Panel, and addressed issues unique to
the construction industry, such as
higher employee turnover rates,
worksites that change frequently, and
the multi-employer business model that
is common on construction worksites.
During the SBAR Panel, some small
entity representatives expressed a
preference for the general industry rule
and requested that OSHA consider
adopting that rule for the construction
industry. When the proposed rule was
published, OSHA requested comment
on how the Agency could adapt a
standard similar to the general industry
rule for the construction sector.
Commenters indicated that they had
been following the general industry rule
for quite some time and suggested
adopting that standard with some
modifications for the construction
industry. OSHA considered the unique
challenges faced by the construction
industry as well as the requests by
commenters for more consistency
between the general industry and
construction standards. The final rule
reflects the organization, language, and
most of the substantive requirements of
the general industry rule. Some of the
aspects of the construction industry that
are not present in general industry work
are addressed by modifications such as
information exchange requirements to
ensure that multiple employers have
shared vital safety information. OSHA
also adjusted the construction rule to
account for advances in technology and
equipment that allow for continuous
monitoring of hazards. Other differences
between the regulatory text of the
general industry rule and this standard
reflect improvements in clarity of
language and enforcement
considerations that have been addressed
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in interpretations of the general industry
rule.
B. Need for Regulation
Prior to the promulgation of this rule,
OSHA had one provision in its
construction standards for a general
training requirement when employees
work in confined spaces. This provision
at 29 CFR 1926.21(b)(6) provided
limited guidance, instructing employers
to train employees as to the nature of
the hazards involved, the necessary
precautions to be taken, and in the use
of protective emergency equipment
required. OSHA has determined that
this final rule, which provides a higher
level of guidance and safety information
to employers engaged in this kind of
work, will reduce the average number of
fatalities and injuries in confined spaces
covered by this standard by 96 percent.
C. Affected Establishments
The final rule affects establishments
in several sectors of the construction
industry, including work involving
buildings, highways, bridges, tunnels,
utility lines, and other types of projects.
Also potentially affected are general
contractors, as well as specialty-trade
construction contractors and employers
engaged in some types of residential
construction work.
D. Benefits, Net Benefits, and Cost
Effectiveness
OSHA expects the final rule to
improve the safety of workers who
encounter confined spaces in
construction. The programmatic
approach of the final rule includes
provisions for: Identifying confined
spaces and the hazards they may
contain; allowing employers to organize
the work to avoid entry into a
potentially hazardous space; removing
hazards prior to entry to avoid employee
exposure; restricting entry through a
permit system where employers cannot
remove the hazard; providing
appropriate testing and equipment
when entry is required; and arranging
for rescue services to remove entrants
from a confined space when necessary.
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An estimated 6 fatalities and 812
injuries occur annually among
employees involved in construction
work in confined spaces addressed by
the provisions of this rulemaking. Based
on a review and analysis of the incident
reports associated with the reported
injuries and fatalities, OSHA expects
full compliance with the final rule to
prevent 96 percent of the relevant
injuries and fatalities. Thus, OSHA
estimates that the final rule will prevent
approximately 5.2 fatalities and 780
additional injuries annually. Applying
an average monetary value of $62,000
per prevented injury and a value of $8.7
million per prevented fatality (value of
statistical life) results in estimated
monetized benefits of $93.6 million
annually.
OSHA estimated the net monetized
benefits of the final rule to be about $33
million annually when costs are
annualized at 7 percent ($93.6 million
in benefits minus $60.3 million in
costs). Table IV–1 summarizes the costs,
benefits, net benefits, and cost
effectiveness of the final rule.
TABLE IV–1—NET BENEFITS
[Millions of 2009 dollars]
7% discount
rate
3% discount
rate
Annualized Costs
Evaluation, Classification, Information Exchange and Notification .........................................................................
Written Program, Issue Permits, Verify Safety, Review Procedures ......................................................................
Provide Ventilation and Isolate Hazards .................................................................................................................
Atmospheric Monitoring ...........................................................................................................................................
Attendant ..................................................................................................................................................................
Rescue Capability ....................................................................................................................................................
Training ....................................................................................................................................................................
Other Requirements ................................................................................................................................................
$12.4
4.2
2.8
11.4
3.6
8.2
11.3
6.4
$12.2
4.2
2.7
11.3
3.6
7.6
11.3
6.3
Total Annual Costs ...........................................................................................................................................
60.3
59.2
Number of Injuries Prevented ..............................................................................................................................................................
Number of Fatalities Prevented ...........................................................................................................................................................
Monetized Benefits ..............................................................................................................................................................................
780
5.2
93.6
Annual Benefits
Net Annual Monetized Benefits (Benefits Less Costs)
33.3
34.4
Totals may not equal the sum of the components due to rounding.
Source: Office of Regulatory Analysis, OSHA. Details provided in text.
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E. Compliance Costs
The estimated costs of compliance
with this rule represent the additional
costs necessary for employers to achieve
full compliance. They do not include
costs for employers that are already in
compliance with the new requirements
imposed by the final rule; nor do they
include costs employers must incur to
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achieve full compliance with existing
applicable requirements.
OSHA based the Preliminary
Economic Analysis and Initial
Regulatory Flexibility Analysis for the
proposed rule, in part, on a report
prepared by CONSAD Corp. [2] 1 under
1 References are available at the end of this
section of the preamble.
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contract to OSHA. For the final
economic analysis (FEA), OSHA
updated data on establishments,
employment, wages, and revenues, and
updated the analyses in the final rule
with these new cost inputs. OSHA
estimated the total annualized cost of
compliance with the present rulemaking
to be between about $59.2 million
(when costs are annualized at 3 percent)
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and $60.3 million (when costs are
annualized at 7 percent). The final rule’s
requirements for employers to evaluate,
classify, and exchange information
account for the largest component of the
total compliance costs, at approximately
$12.2 million to $12.4 million (when
costs are annualized at 3 and 7 percent,
respectively). Other compliance costs
associated with the final rule include
costs related to atmospheric
monitoring—($11.3 million to $11.4
million), training ($11.3 million), rescue
capability ($7.6 million to $8.2 million),
written programs, permits, and review
procedures ($4.2 million), attendants
($3.6 million),—and ventilation and
hazard isolation ($2.7 million to $2.8
million).
F. Economic Impacts
To assess the economic impacts
associated with compliance with the
final rule, OSHA developed quantitative
estimates of the potential economic
impact of the requirements in this rule
on entities in each affected industry.
OSHA compared the estimated costs of
compliance with industry revenues and
profits to provide an assessment of
potential economic impacts.
The costs of compliance for the final
rule are not large in relation to the
corresponding annual financial flows
associated with the regulated activities.
The estimated costs of compliance
(when annualized at 7 percent)
represent about 0.08 percent (less than
1 percent) of revenues and 1.6 percent
of profits, on average, across all entities.
One industry, NACIS 23621 Industrial
Building Construction, showed the
potential for compliance costs to exceed
10 percent of annual profits (10.5
percent), but the Agency concludes that
the final standard is still feasible for this
industry because it affects less than 2
percent of all firms in that industry
sector each year, and OSHA believes
that firms engaged in confined spaces
work are larger and more profitable than
average. Moreover, OSHA does not
believe that industries will absorb all or
most of the final standard costs in lost
profits, as the price elasticity of demand
in construction is sufficiently inelastic
for minor price increases to offset
costs—here, a price increase of less than
0.5 percent (or one-half of 1 percent).
OSHA concludes that compliance
with the requirements of the final rule
is economically feasible in every
affected industry sector.
In addition, based on an analysis of
the costs and economic impacts
associated with this rulemaking, OSHA
concludes that the effects of the final
rule on international trade,
employment, wages, and economic
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growth for the United States are
negligible.
G. Final Regulatory Flexibility Analysis
The Regulatory Flexibility Act, as
amended in 1996 by the Small Business
Regulatory Enforcement Fairness Act,
requires the preparation of a Final
Regulatory Flexibility Analysis for
certain rules promulgated by agencies (5
U.S.C. 601–612). Under the provisions
of the law, each such analysis must
contain: (1) A statement of the need for,
and objectives of, the rule; (2) a
statement of the significant issues raised
by the public comments in response to
the initial regulatory flexibility analysis,
a statement of the assessment of the
agency of such issues, and a statement
of any changes made in the final rule as
a result of such comments; (3) a
response to any comments filed by the
Chief Counsel for Advocacy of the Small
Business Administration, and a detailed
statement of any change made to the
proposed rule in the final rule as a
result of those comments; (4) a
description and an estimate of the
number of small entities to which the
rule will apply or an explanation of why
no such estimate is available; (5) a
description of the projected reporting,
recordkeeping, and other compliance
requirements of the rule, including an
estimate of the classes of small entities
that will be subject to the requirement,
and the type of professional skills
necessary for preparation of the report
or record; and (6) a description of the
steps the agency took to minimize the
significant economic impact on small
entities consistent with the stated
objectives of applicable statutes,
including a statement of the factual,
policy, and legal reasons for selecting
the alternative adopted in the final rule,
and why the agency rejected each one
of the other significant alternatives to
the rule considered by the agency which
affect the impact on small entities.
OSHA analyzed the potential impact
of the final rule on small and very small
entities, as described further under the
heading ‘‘Final Regulatory Flexibility
Analysis,’’ later in this preamble (see
Section IV). OSHA concludes that the
compliance costs are equivalent to
approximately 1.64 percent of profits for
affected small entities generally, and
less than approximately 0.10 percent
(less than 1 percent) of annual revenues
for very small industries, though the
inelasticity of demand in construction
would allow the costs to be offset by
price increases in most industries.
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II. Background
A. Record Citations
References in parentheses are to
exhibits or transcripts in the docket for
this rulemaking. Documents from the
subpart AA rulemaking record are
available under Docket OSHA–2007–
0026 on the Federal eRulemaking Portal
at https://www.regulations.gov or in the
OSHA Docket Office. The term ‘‘ID’’
refers to the column labeled ‘‘ID’’ under
Docket No. OSHA–2007–0026 on https://
www.regulations.gov. This column lists
individual records in the docket. This
document will identify each of these
records only by the last three digits of
the record, such as ‘‘ID–032’’ for OSHA–
2007–0026–0032. Identification of
records from dockets other than records
in OSHA–2007–0026 will be by their
full ID number. In addition, the
transcripts for the public hearings
OSHA held on July 22–23, 2008 are
identified by the docket number in the
record under Docket No. OSHA–2007–
0026–0210 and –0211. To aid readers in
locating citations to the transcripts, this
document refers to these citations using
the abbreviation ‘‘Tr.’’ and the
corresponding page numbers, such as
ID–201, Tr. pp. 10–15.
B. History
On March 25, 1980, OSHA published
an Advanced Notice of Proposed
Rulemaking (ANPR) on confined spaces
for the construction industry (45 FR
19266). The ANPR posed 31 questions
concerning confined-space hazards in
the construction industry, and the
Agency received 75 comments in
response to these questions. However,
OSHA took no further action on this
regulatory initiative at the time.
The Agency subsequently published a
Notice of Proposed Rulemaking (NPRM)
for a general industry confined spaces
rule on June 5, 1989 (54 FR 24080).
OSHA issued the general industry
confined spaces rule (29 CFR 1910.146)
on January 14, 1993 (58 FR 4462).
The general industry standard
requires employers to classify hazardous
confined spaces as ‘‘permit-required
confined spaces’’ and to implement
specific procedures to ensure the safety
of employees who enter them. It
contains detailed procedures for
developing a written confined-space
program, monitoring atmospheric
hazards, isolating physical hazards
through lock out tag out procedures,
training employees, preventing
unauthorized employees from entering
these spaces, providing rescue (both non
entry and entry rescue), and
maintaining records. The general
industry standard specifies a limited
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exception from some of the permitrequired confined-space requirements
when the only hazard in a confined
space is an atmospheric hazard and
ventilation equipment will control the
atmospheric hazard at safe levels. It also
provides protection to employees from
non-atmospheric hazards (for example,
physical hazards) in confined spaces.
However, the general industry standard
does not apply to construction
employers, and, as such, does not
specify the appropriate level of
employee protection based on the
hazards created by construction
activities performed in confined spaces.
In 1993, as part of the litigation
activity associated with the newly
promulgated general industry standard,
OSHA agreed in a settlement with the
United Steel Workers of America to
issue a proposed rule to extend
confined-space protection to
construction employees. On February
18, 1994, OSHA submitted a draft
proposed standard for confined spaces
in construction to the Advisory
Committee for Construction Safety and
Health (ACCSH) for comment. ACCSH
established a work group on March 22,
1994, to address the OSHA draft
proposed standard and report its
findings to the full committee. ACCSH
adopted the work group report on May
17, 1994 and recommended that OSHA
incorporate it into a rulemaking docket.
In this report, ACCSH noted that the
general industry standard did not meet
the needs of the construction industry.
ACCSH found that employers often do
not identify or classify confined spaces
encountered or generated at
construction worksites prior to the
beginning of a construction project, and
noted the difficulties faced by
employers generally on construction
worksites, where conditions often
change rapidly and many different
subcontractors may perform work
simultaneously.
Consequently, ACCSH established a
work group to draft a proposed standard
that would meet the unique needs of the
construction industry. The draft
proposed standard emphasized
identifying different types of confined
spaces encountered in construction (for
example, spaces in which the employer
isolates all hazards or controls
atmospheric hazards at safe levels, and
spaces that are permit-required spaces),
as well as inter-contractor information
exchange and the detailed protections
necessary to eliminate or control
specific hazards.
As the result of the ACCSH work
group review, ACCSH submitted a draft
proposed standard for confined spaces
in construction to OSHA in 1996.
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ACCSH recommended that OSHA use
the draft as a proposed confined spaces
standard. OSHA determined that the
ACCSH draft proposed standard needed
revision to make it easier to understand,
especially for small employers that do
not employ a separate safety staff. The
Agency also determined that the draft
proposed standard did not address
adequately certain hazards, such as
hazards encountered in sewerconstruction work. Consequently,
OSHA determined that it was necessary
to develop a new draft proposed
standard.
In 1998, OSHA completed a new draft
proposed standard, but discovered that
there were several issues that the
Agency needed to resolve before it
could finalize the draft proposed
standard. To get feedback from the
construction community, OSHA held
three stakeholders meetings in October
of 2000 across the country. The topics
discussed at the stakeholder meetings
were: (1) Typical confined spaces
encountered in construction; (2)
whether the proposed standard should
require an early-warning system for
spaces in which the employer could not
isolate an engulfment hazard (such as in
some sewer situations); (3) the need for,
and cost of, continuous monitoring for
atmospheric hazards; (4) how a confined
spaces standard for construction could
accommodate the needs of small
businesses; and (5) whether the
proposed standard should permit an
attendant to perform his or her duties
for more than one confined space at a
time.
In late 2003, OSHA completed
drafting the proposed standard and
convened a panel under the Small
Business Regulatory Enforcement
Fairness Act (SBREFA) to solicit
comments on the proposal from small
business entities. The SBREFA panel
conducted two conference-call
discussions, which were open to the
public, in which small entity
representatives expressed their concerns
about the draft proposed standard; these
representatives also submitted written
comments to the record that covered the
issues. The SBREFA panel then
submitted its recommendations to the
Agency in November 2003.
The Agency published a proposed
rule for confined spaces in construction
on November 28, 2007 (72 FR 67351).
The proposed confined spaces standard
for construction reflected input from
stakeholder meetings, ACCSH, and the
SBREFA review process. For example,
OSHA removed a provision that
addressed working in hazardous
enclosed spaces (i.e., spaces designed
for human occupancy but subject to a
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hazardous atmosphere), which small
business entities participating in the
SBREFA review process considered
burdensome and unnecessary; OSHA
removed this provision because it
believes that existing construction
standards (for example, 29 CFR 1926.55)
adequately address these hazards. The
proposed standard used a confinedspace classification approach consistent
with the ACCSH recommendations.
OSHA organized the proposed standard
chronologically to guide the employer
from its initial encounter with a
potential confined space through the
steps necessary to ensure adequate
protection for employees. In addition, it
addressed the need for coordination and
information exchange at construction
sites, which typically have multiple
employers.
The Agency recognized that a number
of requirements in the proposed
standard for confined spaces in
construction duplicated, or were similar
to, the provisions of the general industry
standard for permit-required confined
spaces. Nevertheless, OSHA had
concerns about whether the general
industry standard adequately addressed
the unique characteristics of confined
spaces in construction. The feedback
that OSHA received from ACCSH,
stakeholders, and the SBREFA process
indicated that, compared to general
industry, the construction industry
experiences higher employee turnover
rates because construction employees
often work at multiple worksites
performing short-term tasks. Unlike
most general industry worksites,
construction worksites are continually
evolving, with the number and
characteristics of confined spaces
changing as work progresses. Also,
multiple contractors and controlling
contractors are more common on
construction worksites than general
industry worksites. Therefore, a
construction standard for confined
spaces, even more so than the general
industry standard for confined spaces,
must emphasize training, continuous
worksite evaluation, and
communication requirements
Decision to abandon the proposed
new classification system and adapt an
alternative that is more similar to the
general industry standard.
During the SBREFA review process,
some small entity representatives urged
OSHA to consider adopting the general
industry standard for construction, and
to solicit comment on how the Agency
could adapt an alternative standard
similar to the general industry standard
to the construction sector. When the
Agency published the proposed
construction standard, it requested
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public comments on how to adapt an
alternative standard similar to the
general industry standard for the
construction industry (72 FR 67352,
67401 (Nov. 28, 2007)). During the
comment period and the public hearings
OSHA held on July 22–23, 2008, OSHA
received many comments and much
testimony regarding the issue of using
an adapted version of the general
industry standard as the basis for the
final rule rather than the new
classification systems proposed in the
NPRM. A clear majority of comments
were in favor of finalizing a confined
spaces in construction standard that
more closely resembles the general
industry standard for confined spaces.
(See, e.g., ID–032; –047; –075; –088;
–092; –095; –105; –106; –115; –117;
–118; –119; –120; –121; –125; 150; –152;
–153; 185; –189; –210, Tr. pp. 54–60,
74–76, 174–175, 282–284; –211, Tr. pp.
73, 172, and 238–239.) Several
commenters proposed adopting the
general industry standard with some
adaptations for the construction context,
though not all of these commenters
specified, or agreed on, what specific
adaptations were appropriate (see, e.g.,
ID–092; –117; –125). The Agency
received a number of comments
suggesting that many construction
employers were currently following the
general industry confined spaces
standard (see, e.g., ID–075; –085; –088;
–092; –095; –112; –117; –118; –120;
–121; –125; –147).
For the reasons discussed in the
preamble to the proposed rule, and in
light of the comments and testimony the
Agency received, OSHA remains
convinced that the general industry
standard does not adequately address
confined-space hazards as these hazards
arise in the construction industry.
Moreover, the 19 years of experience
that employers have working with the
general industry rule, and that OSHA
has enforcing the general industry rule,
highlight several areas in which
additional clarification in the language
of the general industry standard could
improve the effectiveness of a new
construction standard. Therefore, OSHA
is not simply incorporating the general
standard by reference into the
construction standards.
OSHA believes that the particular
duties and obligations in the general
industry standard and the proposed
construction standard are similar, and
that the public’s confusion over the reorganized structure in the proposed rule
is the result of the degree of detail in the
proposed rule, as well as its
organization. Most notably, compared to
the general industry rule, the proposed
rule added specificity to the general
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industry standard’s broad, performancebased requirements, and defined a larger
number of confined-space
classifications.
Nevertheless, in recognition of the
commenter requests for more
consistency between the two standards,
OSHA is using the organization,
language, and most of the substantive
requirements in the general industry
confined spaces standard as the basis for
the final confined spaces in
construction rule. However, differences
in employee and worksite
characteristics between the construction
industry and general industry, as well as
the comments and testimony of the
regulated community indicating the
need for consistency and continuity in
OSHA requirements, prompted OSHA
to develop a final rule for confined
spaces in the construction industry that
contains important requirements from
the proposed rule and some additional
changes. Many of these changes, such as
the information exchange requirements,
are designed to address the heightened
need, on constantly evolving
construction worksites for
communication, worksite evaluation,
and training for confined spaces in
construction. In addition, several
regulatory provisions in the general
industry rule differ from the regulatory
provisions of this final rule because the
provisions of this final rule: (1) Address
construction-specific issues; (2) account
for advancements in technology; (3)
address concerns raised by the regulated
community through comment and at the
hearing; or (4) reflect improvements in
language for modern regulatory drafting
(‘‘must’’ in place of ‘‘shall’’), clarity and
enforcement considerations. In most
cases, the preamble that follows this
introductory section explains the
differences between the provisions of
the final rule and the general industry
rule.
The Agency believes that it provided
adequate notice of the substantive terms
of the final rule, as well as an extensive
description of the subjects and issues
involved. Accordingly, the Agency
fairly apprised interested persons of the
content of the rulemaking, and the
comments and hearing testimony
provide ample evidence that interested
parties to the rulemaking understood
the issues and potential outcomes of the
rulemaking. See, e.g., Nat’l Mining Ass’n
v. Mine Safety & Health Admin., 512
F.3d 696, 699 (D.C. Cir. 2008); MiamiDade County v. U.S. E.P.A., 529 F.3d
1049, 1059 (11th Cir. 2008); United
Steelworkers of America, AFL–CIO–CLC
v. Marshall, 647 F.2d 1189, 1221 (D.C.
Cir. 1980) (‘‘a final rule may properly
differ from a proposed rule and indeed
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must so differ when the record evidence
warrants the change. . . . Where the
change between proposed and final rule
is important, the question for the court
is whether the final rule is a ‘logical
outgrowth’ of the rulemaking
proceeding’’). The resulting final
standard is a logical outgrowth of the
proposal, and the number of comments
urging an adapted version of the general
industry standard provides a clear
indication that the affected members of
the public are not only familiar with the
general industry standard, but also
viewed the inclusion of part or all of the
general industry standard’s structure
and language as a potential outcome of
this rulemaking. The confined-space
issues the Agency addresses in the final
rule are the same as in the proposed
rule, and the Agency addressed the
criticisms and suggestions made by
interested parties in response to the
proposed rule. In short, the combination
of OSHA’s request for comment on the
approach that it ultimately adopted in
the final rule, the explanation of the
hazards it sought to address in proposal,
and the comments and testimony
received in response to the proposal
provided the regulated community with
adequate notice regarding the outcome
of the rulemaking. Therefore, the
Agency concludes that there is no basis
for further delaying promulgation of the
standard to obtain comment on the
approach adopted in this final rule.
Many of the comments OSHA
received on the proposal related to
specific requirements included in the
detailed procedures of the proposed
standard. As a result of finalizing a
confined spaces in construction
standard that closely resembles the
general industry standard, much of this
detailed language does not appear in
this final rule. In some cases, OSHA
addressed the substance of the comment
in the discussion of the most relevant
preamble section in this final rule. In
other instances, the issue raised in the
comment became moot as a result of
OSHA’s decision not to include the
proposed text in the final rule.
Therefore, OSHA is not directly
responding to each of these particular
comments in the summary and
explanation of the final rule.
OSHA considered, but ultimately
rejected, several other regulatory
alternatives based on the comments
submitted to the Agency. For example,
some commenters suggested that
employers should have the option of
following either 29 CFR 1910.146 or this
final rule (ID–089, p. 2; –147, p. 4). This
suggestion relates to some commenters’
concern that having separate rules for
confined spaces in construction and
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general industry makes it confusing for
employers that perform both
construction and maintenance inside a
confined space to comply with the
different requirements of each rule
based on the type of the work they are
performing (see, e.g., ID–119, p. 3).
OSHA developed this standard because
of the unique hazards of confined-space
work in construction and, although this
final rule is similar to § 1910.146, there
are differences when certain procedures
are necessary to protect employees from
the unique hazards of construction
confined-space work. Therefore, an
employer does not have the option of
bypassing the procedures that are
unique to this final rule by complying
instead with § 1910.146. Such a policy
would severely undermine OSHA’s
effort to protect employees from the
unique hazards present during
confined-space operations in
construction.
OSHA recognizes that the differences
between § 1910.146 and this final rule
can make it more complicated for
employers to comply with two different
sets of procedures if they perform
maintenance and construction work at
the same time in the same confined
space. In order to ease the compliance
burden on these employers, OSHA will
consider compliance with this final rule
as compliance with § 1910.146. This
enforcement policy was suggested by at
least one commenter (ID–211, Tr. p.
303).
Another commenter suggested that
OSHA issue a directive on confinedspace work in construction instead of a
final rule (ID–100, p. 5). OSHA
generally issues a directive on a
particular work practice after the
Agency issues a rule, not in lieu of a
rule; accordingly, the directive provides
guidance as to how the Agency will
enforce a standard. The rulemaking
process, on the other hand, provides the
public with notice and an opportunity
to comment on the Agency’s proposed
action, and the Agency may use the
information gathered during this
process to impose substantive duties on
employers, such as employers engaged
in confined-space construction work.
The information gathered by the Agency
during the rulemaking process for this
final rule supports issuing a final rule
for confined-space work in construction.
Therefore, OSHA rejects the alternative
approach suggested by the commenter.
A different set of commenters focused
on individual states’ confined spaces
standards. One commenter asserted that
several State-Plan States have effective
confined space standards and that this
rule will unnecessarily force those states
to change these standards (ID–135, p. 3).
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A similar comment discussed Virginia’s
confined spaces rule, but did not
suggest OSHA adopt that rule (ID–047,
p. 1). Another commenter suggested
OSHA adopt the majority of California’s
confined spaces rule (ID–077, p. 1).
OSHA notes that the Occupational
Safety and Health Act of 1970 (OSH
Act) allows for different regulatory
schemes to address the hazards of
confined-space work provided those
standards are at least as effective as the
Federal OSHA standard. The record
indicates that, by issuing a final rule
that is similar to § 1910.146, OSHA is
not drastically changing industry
practice for addressing confined-space
hazards. (See, e.g., ID–047; –075; –085;
–088; –092; –095; –112; –117; –118;
–120; –121; –125; –147; –189.)
Therefore, OSHA believes that StatePlan States that have standards
applicable to construction work in
confined spaces that are similar to
§ 1910.146 will not have to make major
changes to their existing rules to ensure
that these rules are at least as effective
as this final rule. When a State-Plan
State’s confined spaces rule is not as
effective as this final rule, OSHA
believes that the record warrants a
change in the State-Plan State’s rule so
that it will provide construction
employees with the same level of
protection afforded to them by this final
rule. For a full discussion of State-Plan
States, see Section IV.E (‘‘State-Plan
States’’) later in this preamble.
C. Need for a Rule Regulating Confined
Spaces in Construction
Before promulgating this final rule,
OSHA had one existing provision in its
construction standards that included a
general training requirement for
employers working in confined spaces.
A broad ‘‘safety and training’’
requirement in 29 CFR 1926.21(b)(6),
adopted by the Agency in 1979,
provided limited guidance: Under this
provision, employers were only
required to instruct employees required
to enter into confined or enclosed
spaces as to the nature of the hazards
involved, the necessary precautions to
be taken, and in the use of protective
and emergency equipment required.
Fatality and injury data, OSHA
enforcement experience, and advice
from ACCSH indicate that
§ 1926.21(b)(6) did not adequately
protect construction employees in
confined spaces from atmospheric,
physical, and other hazards. Even when
§ 1926.21(b)(6) applied, it required
employers only to train employees who
work in confined spaces—it did not
address how to protect trained
employees while they are working in
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such spaces, nor did it address the
actions of employers outside the spaces
engaged in activities that might harm
employees inside the spaces. For
situations in which none of the
construction standards apply, the
employer was still required to comply
with the general-duty requirement of the
OSH Act to ‘‘furnish to each of [its]
employees employment and a place of
employment which are free from
recognized hazards that are causing or
are likely to cause death or serious
physical harm to [its] employees’’ (29
U.S.C. 654), but this ‘‘general duty’’ is
often more difficult for OSHA to enforce
and does not provide the same level of
guidance and safety information
provided in a standard.
As noted in the economic analysis
section of the preamble to this final rule,
OSHA determined that employees in the
construction industry who perform
work in confined spaces face a
significant risk of death or serious
injury, and that this final rule would
substantially reduce that risk. At
present, OSHA estimates that 20,479
establishments annually have
employees entering at least one
confined space as defined by this final
rule. OSHA estimates that, each year, 6
fatalities and 900 injuries occur among
employees working in confined spaces
covered by this final rule. OSHA
determined that the final rule, when
implemented properly by employers,
will reduce the average number of
fatalities and injuries in confined spaces
covered by this standard by 96 percent
(5.2 fatalities prevented annually, and
780 injuries prevented annually). (For
further explanation of the significantrisk calculations, see section V.B.
(‘‘Final Economic Analysis and
Regulatory Flexibility Analysis’’) of this
document.)
III. Summary and Explanation of the
Final Standard
Explanation of Changes to Subpart V—
Power Transmission and Distribution
Subpart V of part 1926 governs
construction work involving power
transmission, generation, and
distribution. OSHA recently updated
subpart V (79 FR 20316 (April 11, 2014).
When it did so, OSHA required
compliance with the general industry
confined-spaces standard at § 1910.146
in several provisions of subpart V.
OSHA did so because at that time there
was no comprehensive confined-spaces
standard for construction, but the
Agency explained in the subpart V
preamble that ‘‘the references to the
general industry standard in final
§ 1926.953 are included as a placeholder
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pending the promulgation of the
confined spaces in construction
standard. OSHA intends to change these
references to refer to the construction
standard when it promulgates that
standard.’’ (79 FR 20376) OSHA is,
therefore, amending subpart V in this
rulemaking to replace references to the
general industry confined spaces
standard with references to this final
construction rule, because OSHA
specifically tailored this final rule to
construction work, making the confined
spaces in construction rule more
appropriate than the general industry
standard for construction work
addressed by subpart V.
Amendments to Definition of ‘‘Enclosed
Space’’ in § 1926.968
An ‘‘enclosed space’’ is a term of art
under subpart V and the corresponding
general industry standard for electric
power generation, transmission, and
distribution (§ 1910.269) describing a
workspace such as a manhole or vault
that is designed for periodic employee
entry under normal operating
conditions, and that, under normal
conditions, does not contain a
hazardous atmosphere, but may contain
a hazardous atmosphere under
abnormal conditions (§ 1910.269(x) and
§ 1926.968). There is overlap between
an enclosed space and a ‘‘permitrequired confined space’’ (permit space)
as defined in the confined spaces
standards for general industry
(§ 1910.146) and construction (new
subpart AA): An enclosed space meets
the definition of a permit space—while
it is not expected to contain a hazardous
atmosphere, it has the potential to
contain one—but the definition of
permit-space is broader than the
definition of enclosed space. For
instance, if a space contains a hazardous
atmosphere under normal conditions,
that space is a permit space under
§ 1910.146 or new subpart AA, but it is
not an enclosed space under final
§ 1910.269 or subpart V.
The note to the definition of
‘‘enclosed space’’ in § 1910.269(x) states
that enclosed spaces expected to contain
a hazardous atmosphere meet the
definition of permit spaces in
§ 1910.146, and entry into them must
conform to that standard. Subpart V,
however, did not have any definition of
‘‘enclosed space’’ until OSHA amended
it in 2014 by adding a definition that
matched the general industry definition
in § 1910.269(x) except that it did not
include the note. OSHA explained in
the preamble to the subpart V
amendments that it did not include the
note at that time because there was no
comprehensive corresponding confined
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spaces construction standard to
reference in place of § 1910.146, but
OSHA intended to add a corresponding
note to § 1926.268 when it promulgated
the new construction confined spaces
standard (see 79 FR 20376–20377). As
part of this rulemaking, OSHA is
therefore adding a note to the definition
of ‘‘enclosed space’’ in § 1926.968 that
corresponds to the note in § 1910.269(x),
replacing the reference to § 1910.146
with a reference to subpart AA.
Amendments to § 1926.953
Prior to this rulemaking, § 1926.953(a)
in subpart V, as amended in 2014,
required that entry into an enclosed
space to perform construction work
meet the permit-space entry
requirements of paragraphs (d) through
(k) of § 1910.146 when the precautions
taken under §§ 1926.953 and 1926.965
were insufficient to eliminate hazards in
the enclosed space that could endanger
the life of an entrant or interfere with
escape from the space. Similarly,
§ 1926.953(g) stated that employees may
not enter any enclosed space while it
contains a hazardous atmosphere,
unless the entry conforms to the permitrequired confined spaces standard in
§ 1910.146. OSHA is amending
§§ 1926.953(a) and 1926.953(g) by
replacing each reference to § 1910.146
with a reference to subpart AA so that
the appropriate construction standard,
rather than a general industry standard,
will apply.
OSHA is also adding a sentence to
§ 1926.953(a) to clarify that employers
may comply with the requirements of
§ 1926.953 ‘‘in lieu of’’ most of the
requirements in new subpart AA when
the entry into the enclosed space is a
routine entry for subpart V work and
there is no hazardous atmosphere in the
space. Without this clarifying sentence,
employers could have been confused
about which standard applied. OSHA
determined that § 1926.953 provides
adequate protection to employees in
that situation and announced in the
subpart V preamble that it intended to
add the sentence when it issued this
final rule (see 79 FR 20376).
The new ‘‘in lieu of’’ sentence in
§ 1926.953(a) corresponds to a similar
sentence in § 1910.269(e) specifying that
employers are not required to comply
with § 1910.146(d) through (k) for the
same type of routine entries into
enclosed spaces. OSHA has used
slightly different wording from the
language in § 1910.269 to emphasize
that ‘‘in lieu of’’ language is only
applicable where the entry is routine
and the space does not contain hazards
that could cause death or impede exit.
As with the general industry standard,
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the new sentence in § 1926.1953(a) only
exempts employers from compliance
with some, but not all, of subpart AA’s
requirements. In the ‘‘in lieu of’’
sentence in § 1910.269, OSHA only
excuses employers from compliance
with § 1910.146(d) through (k) for these
routine entries, but employers must still
comply with the requirements in
§ 1910.146(c) and (l), including the
requirements to assess the space,
prevent unauthorized entry,
communicate with and coordinate with
the host employer when applicable, and
to involve entrants and their
representatives in the process. Likewise,
in § 1926.953(a), the enclosed spaces
requirements apply in lieu of the permit
requirements in § 1926.1204 through
§ 1211, but employers still need to
comply with subpart AA’s
corresponding requirements in
§ 1926.1203 to assess the space, prevent
unauthorized entry, and coordinate with
and communicate with the controlling
contractor, in addition to the
requirements in § 1211 to involve
entrants and their representatives in the
process.
Finally, in addition to some minor,
non-substantive grammatical changes to
improve the paragraph, OSHA is also
revising the note to paragraph
§ 1926.953, which appears at the end of
the section, by replacing its reference to
§ 1910.146 with a reference to new
subpart AA. The note clarifies that
OSHA considers employers who comply
with new subpart AA when entering an
enclosed space as in compliance with
§ 1926.353(a). Some employers may
prefer to comply with new subpart AA
rather than § 1926.353(a), and subpart
AA protects employees entering
enclosed spaces at least as effectively as
the provisions in § 1926.353.
Section 1926.1201—Scope
The scope of new 29 CFR part 1926,
subpart AA—Confined Spaces in
Construction is set forth in 29 CFR
1926.1201. This subpart provides
minimum safety and health
requirements and procedures to protect
employees who work in confined
spaces. It addresses how to protect
employees from confined-space hazards.
The final rule includes requirements for
training, identification and assessment
of confined spaces, hazard analysis,
entering, working, exiting, and rescue
for confined spaces containing a variety
of different hazards.
The proposed rule contained an
‘‘Introduction’’ section that provided a
general overview of the standard and
stated that the proposed standard would
cover ‘‘working within or near a
confined space that is subject to a
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hazard’’ (see proposed § 1926.1201(a)).
OSHA removed the ‘‘Introduction’’
section to make this final rule similar to
§ 1910.146, and to avoid confusion
caused by potential overlap with the
‘‘Scope’’ provisions. Section 1926.1201
in the final rule is the scope section.
Paragraph (a). Although many
commenters urged OSHA to conform
this final rule to the general industry
standard as much as possible, the scope
section for confined spaces in general
industry at § 1910.146(a) expressly
excludes construction work. Therefore,
it is impractical for OSHA to change the
language in final rule § 1926.1201 to
mirror § 1910.146(a). Instead, OSHA
structured the scope section in final rule
§ 1926.1201 in a manner that draws
from the language in the scope sections
of the general industry standard and the
proposed rule. As with the scope of the
general industry standard, which states
that it protects employees from the
hazards of entry in permit-required
confined spaces (§ 1910.146(a)), OSHA
phrased final § 1926.1201(a) in terms of
the employees protected by the final
standard. In contrast, the scope of the
proposed rule focused on employers
(see proposed § 1926.1202(a)). While the
final standard necessarily imposes the
duties exclusively on employers, OSHA
concluded that phrasing the scope in
terms of employers ‘‘who have confined
spaces at their job site’’ was potentially
more problematic than the general
industry approach because the regulated
community could misinterpret the
proposed language as requiring some
analysis of the extent to which the
employer exercised control over a
particular part of a construction site.
A number of commenters expressed
confusion about the description of the
standard included in the proposed
introduction, which appeared to
function as an additional statement
about the scope of the rule (see, e.g., ID–
032.0; –100.1; –105.1; –114.1; –119.1;
–120.1; –125.1; –135.0.) In particular,
many commenters asserted that the
reference to work ‘‘within or near a
confined space,’’ as used in the
proposed description of the standard,
was too vague, and requested that
OSHA clarify its meaning. (See, e.g., ID–
031, p. 4; –061, p. 7; –095, p. 1; –101,
p. 2; p. 1; –106, p. 1; –117, p. 7; –120,
p. 2; –121, p. 8; –124, p. 4; p.–125, p.
5.) In response, OSHA did not include
the phrase ‘‘within or near a confined
space’’ in the scope section in this final
rule. Instead, in final § 1926.1201(a),
OSHA describes the scope in more
definite terms by stating that the new
standard protects employees engaged in
construction activities at a worksite
with one or more confined spaces,
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which is similar to the language of the
proposed rule except that it avoids the
reference to ‘‘their job site.’’ The
language in final § 1926.1201(a)
incorporates a bright-line test (whether
or not the worksite has a confined
space) to underscore two important
points in the final rule that also are true
for the general industry standard and
the proposed rule: First, all employers
engaged in construction have a duty
under the final standard to ensure that
their employees do not enter a confined
space except in accordance with the
requirements of the standard, and the
presence of a confined space on the
worksite triggers this duty rather than
the type of work the employer is
performing. Second, there are critical
components of this standard, such as
information sharing and coordination of
work, that apply to certain employers
that, regardless of whether their
employees are authorized to enter a
confined space, have information
necessary for the protection of
employees working inside confined
spaces, or are engaged in activities that
could, either alone or in conjunction
with activities inside the confined
space, endanger the employees working
inside a confined space. Final
§ 1926.1201(a) makes it clear that the
focus of the final standard is on the type
of work performed, and whether that
work could produce, and expose
employees to, confined space hazards.
Although final § 1926.1201(a) differs
slightly from proposed § 1926.1202(a),
this difference does not affect the scope
of the final rule; it merely makes the
scope more precise than the scope of the
proposed rule. This change also is
consistent with the proposed
‘‘Introduction’’ section in proposed
§ 1926.1201(a).
Final § 1926.1201(a) includes a note
with a non-exhaustive list of potential
confined spaces that commonly occur
on a construction worksite. This list
provides examples for employers who
may be unfamiliar with confined spaces
in construction. The note to final
§ 1926.1201(a) is identical to the note to
proposed § 1926.1202(a).
One commenter asserted that OSHA
should exclude steel tanks, which
OSHA included in the list of examples
of confined spaces in construction in
the proposed rule, from the new
standard when the tanks are under
construction because this activity does
not produce an atmospheric hazard (ID–
138, p. 2; –214.1, p. 4; –210, Tr. p. 217).
In particular, the commenter asserted
that contractors typically do not close
entirely steel tanks under construction
until the final phase of construction and
that, prior to the final phase, the tanks
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typically have sufficient natural
ventilation to prevent a hazardous
atmosphere from forming. The final
phase is typically conducted without
any employees inside the tank (ID–210,
Tr. p. 5).
Whether a confined space exists is a
separate analysis from whether a hazard
exists, unless the hazard prevents
unrestricted egress from the space. A
steel tank is a confined space at any
stage of construction when it has
limited or restricted means for entry and
exit (see the definition of a confined
space in § 1926.1202, which is
discussed later in this preamble).
However, OSHA recognizes that a
significant portion of steel-tank
construction activity may not result in
work inside a confined space if
contractors generally do not assemble
the tank sections in a manner that
would place an employee inside a space
with limited egress. Even when
construction of the tank results in such
a space, the space may not contain a
hazard that would render it a permitrequired confined space. If the space is
not a permit-required confined space,
then the employer’s duties are very
limited. In such spaces, the employer’s
responsibility under this standard
would be limited to verifying what the
commenter asserts is true: There is no
atmospheric hazard or other hazard.
Nevertheless, the commenter
acknowledged that welding activities in
some steel tank construction,
particularly for relatively small tanks,
could produce the types of hazardous
atmospheres this standard is intended to
address (ID–210, Tr. pp. 228–229).
Thus, OSHA is not categorically
excluding steel tanks from coverage
under this standard and continues to
include steel tanks in the list of
potential confined spaces to alert
employers that the process of steel-tank
construction could place employees in a
space that meets the definition of a
permit-required confined space.
Another commenter asserted that the
note did not include wind turbines (ID–
210, Tr. p. 154). This commenter
misunderstood the reference to
‘‘turbines’’ in the note in the proposed
and final rules. The reference to
‘‘turbines’’ is general, and applies to all
turbines that meet the definition of a
confined space.
It is important to note that only the
presence of a hazard inside a confined
space will trigger the majority of
procedures required by this final rule.
One commenter asserted that limited
egress is a continual hazard to every
employee in a confined space,
regardless of whether any other hazards
exist (ID–060, p. 3). Therefore, the
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commenter argued that the permit
requirements of this final rule,
including the requirement to have a
rescue service available, should apply to
all confined spaces, even those spaces
in which another hazard does not exist.
This approach would apparently treat
all confined spaces as permit spaces,
which would be a radical departure
from OSHA’s longstanding treatment of
confined spaces in the general industry.
OSHA does not agree that such a
departure, or the additional costs that
employers would incur because of such
departure, are warranted in the absence
of employee exposure to some hazard
inside the confined space. Limited
egress in a confined space is a safety
concern only when an employee cannot
readily exit a confined space to avoid
being exposed to a hazard within the
space. Limited egress, by itself, is
unlikely to injure or kill an employee.
If limited egress is the only safety
concern, then OSHA concludes that it is
not reasonable to require employers to
comply with the provisions of this final
rule that pertain to permit spaces. In
such a circumstance, employers already
must follow existing construction
standards that apply to work in an
enclosed space (for example,
§ 1926.353—Ventilation and protection
in welding, cutting, and heating at, and
§ 1926.55—Gases, vapors, fumes, dusts,
and mists).
Another commenter noted that the
shipyard employment standard at 29
CFR part 1915 includes confined spaces
requirements and was unsure whether
this new construction standard will
apply to confined space construction
work performed in a shipyard (ID–028,
p. 1). It will. OSHA focuses on the type
of work activity, not necessarily the
location of the work activity, in
determining whether this confined
spaces in construction standard or the
shipyard employment standard, part
1915, applies. See, e.g., Feb. 9, 2004,
letter to Jack Swarthout.2 The shipyard
employment standards apply to ship
repairing, shipbuilding, ship breaking,
and related employment. This confined
spaces in construction standard covers
confined space work in shipyards to the
extent that it is construction work and
is not ship repairing, shipbuilding, ship
breaking, or related employment. An
example in which this confined spaces
in construction standard applies is the
construction of a building on the
grounds of a shipyard. Non-construction
work performed in a shipyard is not
subject to this final rule; either
§ 1910.146 or the shipyard employment
2 All of the letters and memoranda included in
this preamble are available at www.osha.gov.
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standard at 29 CFR part 1915, subpart
B—Confined and Enclosed Spaces and
Other Dangerous Atmospheres in
Shipyard Employment would cover
such work.
Paragraph (b) Exceptions. This
paragraph explicitly excludes
construction work regulated by 29 CFR
part 1926, subpart Y—Diving,
construction work regulated by 29 CFR
part 1926, subpart P—Excavation, and
construction work regulated by 29 CFR
part 1926, subpart S—Underground
Construction, Caissons, Cofferdams and
Compressed Air from the scope of this
final rule. Accordingly, this provision
exempts employers operating under one
of the three listed exemptions from
complying with this final rule for work
within a confined space, so long as that
work falls within the scope of one of the
listed subparts.
The Agency exempted each type of
work covered by the listed subparts
from the requirements of this standard
because OSHA specifically tailored the
existing requirements in these subparts
to protect employees from the hazards
associated with confined spaces. In
addition, OSHA believes that
overlapping standards covering these
activities could be unnecessarily
burdensome to employers, or cause
some confusion about the appropriate
procedures to use.
Under § 1926.1201(b)(3), this confined
spaces standard does not apply to
construction activities covered by 29
CFR part 1926, subpart Y, which
encompasses diving and related support
operations conducted in connection
with all types of work and
employments, including construction
(29 CFR 1926.701, referencing 29 CFR
1910.401). As defined in subpart Y, a
‘‘diver’’ is an employee working in
water using underwater apparatus
which supplies compressed breathing
gas at the ambient pressure (§ 1926.701,
referencing § 1910.402). The Agency
notes that, if a diver engages in
construction activity in an area that
meets the definition of a confined space
under this final rule, and is not working
in water or removes his/her underwater
breathing apparatus, then, in most cases,
the activity is outside the scope of
subpart Y because the employee is no
longer a ‘‘diver’’; in such a case, the
requirements of this confined spaces
standard apply instead.
The other exemptions set forth in
final § 1926.1201(b) are identical to the
proposed exemptions except that OSHA
removed the ‘‘non-sewer’’ limitation for
the exemption that applies to 29 CFR
part 1926, subpart P—Excavations and
29 CFR part 1926, subpart S—
Underground Construction. Under
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§ 1926.1201(b)(1) and (b)(2), OSHA
exempted construction activities
covered by subparts P and S. In its
explanation in the proposed rule, the
Agency noted that subparts P and S
generally provide adequate protections
against hazards in excavations and
underground work (72 FR 67356 (Nov.
28, 2007)). In light of the additional
hazards associated with sewers as
continuous systems that often have
hazardous atmospheres and engulfment
hazards, the Agency proposed limiting
the Excavations, and Underground
Construction exemptions to ‘‘nonsewer’’ work, which would have the
effect of applying this final standard, in
addition to subpart P or subpart S,
whenever an employer performed
excavation or trenching construction
work related to a sewer system. One
commenter urged OSHA to limit the
exemption further, characterizing
subpart P as ‘‘insufficient for addressing
potential worker exposures to hazardous
atmospheres,’’ and asserting that this
final rule should apply to excavations
where a hazardous atmosphere exists
because the confined spaces standard
would provide more comprehensive
protection for employees than the
excavation standard (ID–105, p. 5). The
commenter did not, however, provide
any basis for this assessment. Two
commenters emphasized the
significance of the hazards posed by
excavation, and urged OSHA to protect
employees from those hazards; however,
they did not discuss subpart P—
Excavations and did not provide a clear
rationale for why those standards do not
provide adequate protection for
employees working in excavations (ID–
032, p. 4; –034, p. 1).
A different commenter asserted that
OSHA should apply the confined spaces
standard to hazards in excavation work
not covered by the excavation
requirements (ID–025, p. 2). In other
words, OSHA should exempt excavation
work unless there is a hazard present
not addressed by subpart P—
Excavations, but addressed by this
confined spaces standard, in which case
the confined-space requirements
applicable to addressing that specific
hazard would apply. The commenter
did not provide an example of a hazard
that could be present in excavations but
not addressed by subpart P. Also, OSHA
believes that the approach advocated by
the commenter would lead to confusion,
and may not promote safety. OSHA
designed the confined spaces standard
to work as a comprehensive system, not
through piecemeal application.
Therefore, OSHA concludes that it is
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not appropriate to limit the exemption
as requested by the commenter.
Another commenter asserted that the
excavation standards in subpart P do
not provide protection against hazards
associated with applying waterproofing
products on building foundations below
grade level (ID–106). OSHA disagrees
with this commenter. Even assuming
that the particular waterproofing
product used would constitute an
atmospheric hazard, 29 CFR 1926.651(g)
requires an employer to test for
atmospheric hazards and to take
adequate precautions to protect
employees accordingly.
Most of the commenters who
addressed the issue of the potential
overlap between this final standard and
the excavation and underground
construction requirements in subparts P
and S, respectively, requested that
OSHA expand the exemption to exclude
all work subject to those standards from
the scope of the final rule, regardless of
whether the excavation or underground
work connects to a sewer, because other
OSHA standards, primarily subpart P,
adequately cover such work (ID–060, p.
1; –108, p. 2; –117, p. 6; –124, p. 3;
–140, p. 6; –143, p. 1). One of these
commenters noted that subpart P’s
requirements ‘‘include testing the
trench/excavation(s) before workers
enter them when a hazardous
atmosphere exists or could reasonably
be expected to exist (e.g. excavations
near landfills or in areas where
hazardous substances may be stored)
and providing proper respiratory
protection or ventilation to prevent
exposure to harmful levels of
atmospheric contaminants and to assure
acceptable atmospheric conditions,’’
and also include appropriate rescue
provisions (ID–117, pp. 6 and 7).
Furthermore, several of the commenters
asserted that applying both this final
rule and the excavation standards to
work inside all excavations would result
in a confusing and disjointed regulatory
scheme that could reduce employee
safety (ID–060, p. 1; –108, p. 2; –117, p.
6; –140, p. 6). OSHA agrees with these
comments and, therefore, the Agency
excluded all excavation work from the
scope of the final rule (see
§ 1926.1201(b)(1)).
Although the exemption in the final
rule may be broader than the proposed
exemption because the final rule does
not cover underground sewer work and
sewer excavation work, the expanded
exemption is still consistent with
OSHA’s intent in the proposed rule. In
proposing to apply the confined spaces
standard to all sewer work, the Agency
emphasized the extraordinary dangers
associated with sewer systems,
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including the difficulties in isolating
hazards in a contiguous system, and the
extremely hazardous atmospheres that
can develop in sewers and quickly
cause fatalities. These dangers, however,
primarily involve existing sewer
structures, rather than construction of
new sewer systems; new systems would
not necessarily present such hazards
until connected to an existing sewer
system. Under this final rule, the
limitations on the scope of subparts P
and S will ensure that the confinedspace requirements apply to most
construction work within existing sewer
structures, as explained in the following
discussion of the interaction between
this confined spaces standard and
subparts P and S. In the context of sewer
work, the principal hazards associated
with the excavation work around the
sewer lines are likely to be atmospheric
hazards that arise from the soil
surrounding an existing sewer pipe
(from leaching or other sources), as well
as potential hazards associated with the
release of hazardous substances from
the sewer pipe. These hazards are
similar to the hazards encountered
during excavation and underground
work near landfills and water mains that
OSHA exempted from coverage in the
proposed rule because OSHA regarded
the protections of subparts P and S as
sufficient (see 72 FR 67356).
OSHA considered the common
scenario in which an employer digs
down to an existing sewer line, then
excavates a new trench in which it lays
new sewer pipe and connects it to an
existing sewer line. During the ‘‘tie in’’
process of connecting the new sewer
pipe to the existing sewer line,
employees could potentially be exposed
to atmospheric hazards and physical
hazards emanating from the existing
sewer line. While any entry into the
existing sewer line, including placing
any part of the body inside existing line
(see definition of ‘‘entry’’ in
§ 1926.1202), would be governed by the
confined spaces standard, OSHA does
not believe that hazards from the
existing sewer line should subject the
entire excavation project to the confined
spaces standard. Employers already
have a duty under subpart P to address
the atmospheric and physical hazards in
the excavation, and employers must
anticipate and address the hazards that
might come from the existing sewer
line. Employers must use extreme
caution in unsealing the existing sewer
line. Before opening the existing line,
employers must, whenever possible,
isolate the existing line to be opened
from the rest of the sewer and ensure
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25375
that employees are removed from the
excavation.
Based on the record, OSHA concludes
that subparts P and S are also sufficient
to address the hazards associated with
excavation work around sewers and the
construction of new sewers, while the
confined spaces standard will address
the work inside the sewer pipes where
the atmospheric and physical hazards
are greatest.
Clarification of the Scope of Subparts P
and S
OSHA does not intend for this final
standard to overlap with 29 CFR part
1926, subpart P or 29 CFR part 1926,
subpart S. Each of these standards
contains specific provisions addressing
many of the same hazards that could
arise in the same space. The Agency is,
therefore, taking this opportunity to
clarify the scope of subparts P and S
relative to the scope of this final
confined spaces standard, thereby
simplifying the regulatory scheme for
employers working in these spaces.
Subpart P applies to ‘‘all open
excavations made in the earth’s
surface,’’ including trenches
(§ 1926.650(a)). For example, the work
of digging trenches, shoring up the
trenches, and placing a sewer pipe or
other materials into the trenches are
subject to subpart P. When an employer
is excavating a trench to install a new
storm drain, subpart P applies to all
excavation and trenching activities. The
final confined spaces standard applies,
however, to non-excavation work within
a confined space located in an
excavation, as this work would expose
employees to additional hazards besides
excavation-related hazards. For
example, this final standard covers
entry into a prefabricated storm drain,
other pipe, or manhole even if located
at the bottom of an open excavation.
Subpart S applies to the construction
of underground tunnels, shafts,
chambers, and passageways and cutand-cover excavations which are both
physically connected to ongoing
underground construction operations
within the scope of the subpart, and
covered in such a manner as to create
conditions characteristic of
underground construction
(§ 1926.800(a)(1)). For subpart S to
apply, ‘‘the tunnel or other underground
structure must be under ‘construction.’ ’’
See October 1, 2010, letter #20061017–
7300. For example, the construction of
an underground structure by boring a
tunnel through soil and providing the
concrete or metal supports necessary to
preserve the opening is subject to
subpart S, as are structural
modifications such as upgrading a
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tunnel wall to construct a new structure
following a collapse.3 OSHA developed
subpart S to protect employees from the
hazards associated with the
construction of underground structures,
and OSHA concludes that the subpart S
standard provides more appropriate
protections in these situations than this
final confined spaces standard.
In the context of underground work,
this final standard applies mainly to
construction activities inside an existing
underground confined space, as
opposed to the initial construction of
that underground space.4 Examples of
activities covered by this confined
spaces standard include: installing a
structure within an existing tunnel,
working inside a large pipe or vault
located within an existing sewer tunnel,
laying a new cable inside an existing
sewer tunnel, upgrading a grate in an
existing sewer system, installing a new
lining in a sewer pipe, adding tile or
grout or other sealant to an existing
concrete tunnel, or attaching equipment
to the walls of an existing tunnel.5
OSHA recognizes that, in large
underground construction projects, the
distinction between an existing portion
of a tunnel and the construction of a
new tunnel might not be clear when the
same employees are working to
construct a tunnel, or employees add
equipment or structures to tunnel walls
at the same time they are digging the
tunnel. To avoid requirements that
3 OSHA previously determined that the
underground construction requirements in subpart
S also apply to tunnels placed underwater. See
August 8, 2002, memorandum to K. Frank Gravitt.
This new confined spaces standard does not affect
that previous determination. However, this
confined spaces standard does cover construction
work that occurs inside an underwater tunnel
following the initial construction of that tunnel.
4 Note that the distinctions discussed here are
solely for the purposes of determining which
construction standard applies. This discussion does
not impact OSHA’s analysis of whether an activity
constitutes construction work as opposed to
maintenance work.
5 OSHA notes that in a 1991 memorandum the
Agency applied subpart S to the ‘‘rehabilitation’’ of
a sewer tunnel originally completed in 1932.
January 21, 1991, memorandum to Michael
Connors. OSHA issued the memorandum before it
issued either this standard or the general industry
standard for confined spaces, and, thus, before it
had reason to consider potential overlap between a
confined spaces standard and other construction
standards, or could point to any other employee
protections. Depending on the extent of the
‘‘rehabilitation’’ and the activities involved, the
new confined spaces standard may apply instead to
such projects in the future. For example, subpart S
would cover the ‘‘rehabilitation’’ of an existing
tunnel that involves expansion of the existing sewer
or an improvement of a collapsed wall. However,
this final confined spaces standard would cover
‘‘rehabilitation’’ that consists of adding sealant to
the existing tunnel structure, or attaching
equipment or new materials to the tunnel walls. To
the extent that the 1991 memorandum requires a
different result, this final standard supersedes it.
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could potentially cause confusion and
extra burdens by forcing employers to
switch back and forth between different
standards during the same general
tunnel-construction project, OSHA will
treat non-structural work performed in
conjunction with initial construction of
an underground space as covered by
subpart S. For example, if employees
install a cable as part of the initial sewer
tunnel-construction project, subpart S
would cover both the employees
engaged in tunnel construction and
those engaged in cable installation.
Otherwise, the result would be different
employees working on the same
construction project in the same space,
but under different standards with
significantly different requirements.
One commenter representing
homebuilders asserted that house
foundations and basement excavations
become ‘‘trenches’’ when contractors
construct formwork, foundations, or
walls, and, therefore, subpart P, rather
than the final confined spaces standard,
should cover these work areas (ID–117,
pp. 6 and 7). According to the
commenter, OSHA should not consider
this type of work area a confined space
because it is subject to natural
ventilation. Whether a work area is
subject to natural ventilation is not
dispositive in determining whether the
area meets the definition of a confined
space in final § 1926.1202. However, if
the work is ‘‘excavation’’ work or
‘‘trench’’ work under subpart P, then
this final rule would not apply. OSHA
agrees that subpart P, and not this
confined spaces standard, would apply
to the construction of most house
foundations in an excavated area until
the contractor backfills the area adjacent
to the foundation or otherwise covers
the foundation or the other areas.
However, depending on the particular
circumstances at the worksite, once the
backfill or other covering occurs, the
area inside the foundation space could
be a confined space subject to this final
rule if it meets all of the criteria in the
definition of a confined space in
§ 1926.1201.
Other Requests for Exemptions
1. Home Construction
One commenter requested that OSHA
exempt the following areas from
coverage under this standard: attics,
crawl spaces, basements, cabinets, and
‘‘similar areas in home building’’ (ID–
117, pp. 6 and 7). The commenter’s
rationale for these exemptions was that
these spaces ‘‘do not contain hazardous
atmospheres or engulfment hazards’’
(id). The commenter did not provide
any basis for the assertion that these
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areas are inherently free of the
identified hazards, and OSHA does not
agree that these spaces are always
inherently free from such hazards.
Hazardous gases or other substances
may occur in almost any confined
space. For example, one employee may
store or apply an epoxy or other
chemical in a crawl space, which could
expose that employee or a subsequent
entrant to a hazardous atmosphere. A
different commenter noted that surface
coatings such as paints and epoxies are
seemingly stable, and, while generally
undetectable through air monitoring
once applied and dried, could result in
significant safety and health hazards to
employees who are welding or involved
in other hot work in a confined space
(ID–213.1, pp. 6 and 7).
Moreover, hazardous atmospheres
and engulfment hazards are only two
types of hazards that could cause death
or serious injury to employees in a
confined space. The commenter
requesting the exemption did not
provide any indication that the spaces
would be free of physical hazards that
could trap, kill, or seriously injure the
employees. In fact, the final economic
analysis for this rule cites several
fatalities that resulted from exposure to
physical hazards (generally electrical) in
crawlspaces under homes. Therefore, a
categorical exemption for these types of
spaces is inappropriate, and would be
inconsistent with the purpose of the
standard.
However, while a categorical
exemption is not appropriate, OSHA
anticipates that, in new construction,
employers may be able to organize work
practices to avoid placing workers in
areas that meet the definition of a
confined space (for example, complete
work in what will eventually become a
crawl space before constructing the
overhead portion of the crawl space,
apply insulation to an attic floor before
the underlying ceiling below it is
installed, complete basement work
before the overhead structure is
installed or after stairways are in place).
Furthermore, if the commenter is correct
that the majority of the spaces it
identified do not contain a hazardous
atmosphere or other hazards, then the
employer would have only a limited
duty under this standard because a
permit program would not be necessary
if the spaces do not contain such
hazards. Accordingly, employers would
only need to identify the spaces and
ensure that the confined spaces remain
free of hazards.
2. 29 CFR Part 1926, Subpart V Work
Commenters representing the electric
utilities asserted that OSHA should not
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require employers engaged in 29 CFR
part 1926, subpart V work to follow two
different confined spaces standards (ID–
112, pp. 3 and 4; –134, p. 2; –210, Tr.
pp. 106–108, 142). These commenters
stated that general industry electricutility work practices are similar to
construction electric-utility work
practices. OSHA addresses the
commenters’ preference to have
identical confined-space provisions
applicable to both general industry and
construction earlier in this preamble
where the Agency explains why it chose
to adopt a modified version of the
general industry standard as the
confined spaces in construction final
rule. As discussed there, OSHA will
also treat compliance with this new rule
as compliance with the general industry
confined spaces rule when one or more
employers are engaged in both general
industry work and construction work at
the same time in the same space.
To the extent that the commenters
were requesting that OSHA exempt all
subpart V work from all of the new
confined-space requirements in final
subpart AA, OSHA declines to do so.
First, the general industry standard
includes no such broad exemption, and
the record does not indicate why
electric-utility industry work in
confined spaces is less hazardous or
otherwise less suitable for coverage by
a confined spaces standard than the
work of any other industry. The general
industry electric power generation,
transmission, and distribution rule,
§ 1910.269, does not exempt that
industry from the general industry
confined-space requirements at
§ 1910.146: to the contrary, the
‘‘enclosed spaces’’ provision in
§ 1910.269(e) expressly requires
employers to comply with the
requirements in § 1910.146 when the
enclosed-space entry will not be routine
in nature or the space contains a
hazardous atmosphere that cannot be
controlled through the steps specified in
§ 1910.269(e).
As explained earlier in this preamble,
OSHA anticipated in its recent
amendments to the corresponding
construction rule, 29 CFR part 1926,
subpart V—Electric Power Generation,
Transmission, and Distribution;
Electrical Protective Equipment, that the
confined spaces in construction
standard would provide the parallel
integral protections to employers
engaged in construction work that
involves conducting non-routine entries
into enclosed spaces, or where the
enclosed spaces contain hazards that are
not controlled by the enclosed spaces
requirement (see § 1926.953(a) and its
explanation at 79 FR 20375–20376).).
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OSHA explained that the enclosed
spaces provisions in § 1926.953(a) are
only intended to address routine entries
with a limited type of hazard, while the
general industry confined spaces
standard (which the Agency noted it
intended replace with the construction
version in this final rule) applies to all
other entries into enclosed spaces. The
confined space standard ‘‘ensures that
employees working in enclosed spaces
will be afforded protection in
circumstances in which the Subpart V
provisions are insufficiently protective’’
(79 FR 20376). If OSHA exempts
employers engaged in subpart V work
from the confined spaces standard, it
would be creating a regulatory gap that
is not present in the general industry
context.
The commenter asserted that electric
utility work in ‘‘power generation
facilities and other electric utility
installations’’ is sufficiently similar that
OSHA has previously acknowledged it
should be regulated in the same manner,
regardless of whether the employer is
engaged in construction or general
industry activity (ID–112.1, p. 4–5). To
the extent that this commenter is
requesting greater consistency between
the construction rule and the general
industry rule, OSHA has provided that
in this final rule. To the extent that this
commenter is requesting an exemption
from the construction standard so that it
could comply instead with the general
industry standard, OSHA disagrees
because such an approach would result
in a regulatory gap. Section 1910.146 is
a general industry standard that, by its
own terms, could not apply to
construction activities beyond the scope
of the previous § 1926.953
incorporation, but that incorporation of
§ 1910.146 was limited: it only applied
to routine entries into enclosed spaces.
Not all enclosed spaces are permitrequired confined spaces and not all
entries are routine. Further, while in
general industry, ‘‘routine’’ entries for
maintenance work covers a relatively
broad range of activities, in the context
of construction work a ‘‘routine’’ entry
would be much narrower. In practice, a
complete exemption from the new
construction rule for confined spaces
would leave many subpart V workers
completely unprotected from the
hazards in many confined spaces.
Paragraph (c)—Other Standards. This
final rule replaces the confined spaces
training requirement previously
specified in § 1926.21(b), but does not
replace any other construction
standards. Rather, OSHA developed this
final rule to work in conjunction with
other construction standards to provide
additional protections needed to
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25377
address hazards that may arise when
employees are working in or near a
confined space. No requirement in this
confined spaces final rule supplants or
diminishes employer duties imposed by
any other OSHA standard, and the
Agency included § 1926.1201(c) in this
final standard to emphasize that point.
When both the scope of final
§ 1926.1201 and the provisions in
another OSHA construction standard
related to confined-space hazards cover
an activity, OSHA requires employers to
comply with both provisions
(§ 1926.1201(c)). For example, while 29
CFR part 1926, subpart D—
Occupational Health and Environmental
Controls contains requirements for
ventilation when working in potentially
hazardous atmospheric conditions, it
does not address other equipment or
workplace conditions covered by this
final rule. Therefore, where a potential
hazardous atmosphere exists and this
final confined spaces rule requires
ventilation to control that hazard, the
employer must ventilate in accordance
with § 1926.57. However, the remaining
provisions of this confined spaces rule
will still apply: for example, if the
situation requires rescue, the employer
must provide rescue in accordance with
this final rule.
In the preamble to the proposal,
OSHA also discussed the overlap of the
confined-spaces standard with its
construction welding standard in
subpart J of 29 CFR part 1926. The
Agency explained that both standards
would apply, noting for example that
subpart J sets criteria for the use of a
lifeline system in the confined space,
but does not set criteria for the use of
rescue services or provide the same
level of procedures and controls for
permit-required confined spaces (72 FR
67356 (Nov. 28, 2007)). OSHA designed
the welding standard to protect
employees solely from the hazards of
welding, which include metal fume,
gases, and smoke hazards associated
with the welding process, physical
hazards from the welding device or
contact with the hot welding surface,
potential explosion of the gas tanks, and
hazards from working with specific
materials. The confined-spaces
standard, however, addresses a wider
range of hazards than the welding
standard, and OSHA considers the
confined-spaces standard more detailed
and comprehensive than the welding
standard in its protection of employees
from those other hazards for purposes of
29 CFR 1910.5(c).6 Although the
6 The OSHA regulation addressing the overlap of
different standards is in 29 CFR 1910.5. Paragraph
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welding standard has a section designed
to address the hazards of welding in a
confined space, the Agency is applying
the provisions of the confined-spaces
standard to all other hazards associated
with confined-spaces work to the extent
these provisions of the confined-spaces
standard do not conflict with employee
protections in subpart J. Therefore, as
OSHA explained in the proposal, the
rescue service and entry procedures
must meet the requirements of this
confined-spaces standard, while the
employer must use a lifeline system as
required to meet the criteria in subpart
J. Specifically, employers must comply
with the requirements of § 1926.1203(c)
to prevent unauthorized entry, and the
subpart AA requirements to implement
a permit program (including posting a
permit) to provide for entry in
accordance with §§ 1926.1203(d),
1926.1204, 1926.1205, and 1926.1206.
Employers must comply with the
ventilation requirements in
§ 1926.353(a) of subpart J to address
atmospheric hazards produced by
welding fumes, but employers also must
comply with § 1926.1204(c), which
requires ventilation as necessary to
control any atmospheric hazards beyond
those generated by welding because the
welding standard does not address those
hazards. Employers also must comply
with the identification, assessment, and
information-exchange and coordination
requirements in § 1926.1203(a), (b), and
(h), and the relevant training required
by § 1926.1207. Employers must
develop a rescue plan in accordance
with § 1926.353(b)(3) of subpart J, but
also must assess and select a rescue
service in accordance with
§§ 1926.1204(i) and 1926.1211(a) and
(c), and equip and train its in-house
rescue services pursuant to
§ 1926.1211(a) and (b). Finally,
employers must comply with additional
confined-spaces requirements not
addressed in the welding standard, such
(c)(1) of that regulation states that if a particular
standard is specifically applicable to a condition,
practice, means, method, operation, or process, it
shall prevail over any different general standard
which might otherwise be applicable to the same
condition, practice, means, method, operation, or
process. Paragraph (c)(2), however, provides that
any standard shall apply according to its terms even
though particular standards are also prescribed for
the industry to the extent that none of such
particular standards applies. The Agency interprets
this regulation in this context to mean that the
welding standard is the more specific standard
addressing welding hazards and, therefore, applies
to welding activities even when conducted in
confined spaces; however, several provisions of the
confined-spaces standard apply to confined-space
hazards not addressed by the welding standard (see
examples later in this paragraph), and employers
must comply with these provisions when their
employees are exposed to these hazards during
confined-space operations.
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as the requirement to make Safety Data
Sheets available to the medical facility
treating any entrant exposed to
hazardous substance (§ 1926.1211(d)),
and the employee-participation
requirements in § 1926.1212.
Subpart D—Occupational Health and
Environmental Controls, at
§ 1926.64(f)(4) and (j), discussed above,
and in subpart V—Power Distribution
and Transmission, at § 1926.950(a),
provide other examples of potential
overlap with existing standards. In
general, the final confined-spaces
standard applies to hazards not
addressed by subpart V. Subpart V
generally protects employees from
electrical hazards but does not
necessarily address a hazardous
atmosphere or other physical hazards in
the confined space; the requirements of
the confined-spaces standard address
those hazards, and employers must
comply with these requirements during
confined-spaces operations. For
example, in § 1926.953 of subpart V
OSHA specifically addresses the overlap
between the ‘‘enclosed spaces’’
requirements of subpart V and the
confined spaces standard, mandating
compliance with the confined-spaces
requirements when hazards remain even
after an employer has complied with all
of the measures described in subpart V.
Language in proposed § 1926.1202(d)
not included—Statement on other
duties of controlling contractors.
Proposed § 1926.1202(d) contained a
statement that the information-sharing
requirements in the rule do not limit a
controlling contractor’s responsibilities
under any other provisions of the rule
or the OSH Act, including those
responsibilities described in OSHA
Directive CPL 02–00–124: MultiEmployer Citation Policy (Dec. 10,
1999). The proposed rule text listed
several specific examples of controlling
contractor duties.
OSHA is not including that statement
or any equivalent statement in the final
rule for several reasons. First, such a
statement is unnecessary because it is
only a reminder that OSHA has a wide
variety of health and safety standards
that could apply to various activities of
controlling contractors and host
employers, depending on their activities
and responsibilities. OSHA does not
typically include such a reminder in the
regulatory text of its standards. For
example, OSHA does not include a
similar statement in the general industry
confined spaces standard even though
that standard includes specific duties
for host employers, and the host
employers could also have additional
duties under other standards or if they
qualify as controlling employers or
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exposing employers under OSHA’s
multi-employer citation policy.
Second, OSHA is concerned that the
regulated community will view the
inclusion of such a statement in this
standard as implying that standards
without the same statement preempt
other potentially applicable standards or
policies. OSHA did not intend such an
implication, and it does not have the
time or resources to revise all of its
standards to include this statement.
Third, several commenters found fault
with the statement in the proposed rule.
One commenter noted the statement
was incomplete because it addressed
controlling contractors, not host
employers (ID–117, p. 19). Another
commenter implied that the statement
would not be helpful unless it listed all
of the other potential duties to which
controlling contractors could be subject
(ID–211, Tr. p. 76).
1926.1202—Definitions
Final rule § 1926.1202 provides
definitions for key words used to
describe the requirements of this final
rule. OSHA adopted most of the
definitions from its general industry
confined spaces standard (29 CFR
1910.146); most definitions also are
generally consistent with the voluntary
consensus standard on confined spaces,
ANSI Z117.1–2003. Unless otherwise
noted, these definitions are applicable
only to this confined spaces in
construction standard; OSHA added an
introductory statement to that effect in
§ 1926.1202 of the final rule. OSHA took
many of the definitions of the terms
used in final rule § 1926.1202 from
other OSHA construction standards; the
Agency included these definitions in
this final rule to minimize the need to
reference those other standards.
Several commenters objected that
some of the definitions of terms used in
the proposed confined spaces in
construction standard were different
than the definitions for identical terms
in the general industry confined spaces
standard at § 1910.146(b) (ID–086, p. 3;
–112, p. 7; –147, pp. 2–3). For the
reasons set forth in section II.B (History)
of this preamble, in the final rule OSHA
revised many of these definitions so that
the terms are consistent with the general
industry terms defined at § 1910.146(b):
entry, entry supervisor, hazardous
atmosphere, immediately dangerous to
life and health, permit-required
confined space, rescue service, retrieval
system, and testing.
In addition, OSHA included some
terms in the Definitions section of this
final rule not defined in the proposed
rule, but defined in the general industry
confined spaces standard at
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§ 1910.146(b), including: acceptable
entry conditions, hot work, inerting,
line-breaking, non-permit confined
space, and prohibited condition. Again,
for the reasons explained in preamble
section II.B (History), OSHA made
definitions of these terms in this final
rule consistent with § 1910.146(b). In
general, OSHA defined the terms
identically to the general industry
standard or revised the definition
slightly to make grammatical
improvements or to clarify the meaning
of the term. When OSHA deviated
substantively in the final definition
from the term as defined in
§ 1910.146(b), the Agency explains its
reasons for doing so in the individual
preamble paragraph addressing that
definition.
One commenter urged OSHA to
define certain terms exactly as ANSI Z–
117.1–.2003 defines the terms (ID–086,
p. 3). The Agency does not agree that
such an approach is appropriate. The
commenter did not explain why the
definitions as proposed were
inappropriate, how the change would
improve safety, or why the consensus
standard was preferable to the
longstanding definitions in the general
industry standard that most commenters
supported. OSHA selected the
definitions in this final rule specifically
for the activities and equipment covered
by this final rule and, to the extent
possible, to be consistent with the
definitions in § 1910.146(b) so as to
reduce confusion among the regulated
community and facilitate compliance. In
many cases, the ANSI standards were
not as clear or comprehensive as the
final language, and therefore less
preferable for a mandatory and legally
enforceable standard.
Some commenters also noted that
OSHA proposed definitions for many
terms not defined in § 1910.146(b) (ID–
112, p. 9; –147, pp. 2–3). These
commenters did not, however,
specifically object to these definitions,
identify errors, suggest improvements,
or otherwise give a reason why OSHA
should not include these definitions in
the final rule. In this regard, the final
standard uses some terms, such as early
warning system and controlling
contractor, not used in the general
industry confined spaces standard. The
general industry confined spaces
standard uses other terms not defined in
§ 1910.146(b). In general, for definitions
in either of these categories, OSHA
made the definition in this final rule
identical to the definition in the
proposed rule. When the Agency
includes in the final rule a definition
that does not have a parallel definition
in the general industry standard, and
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when the Agency revises a definition
from the proposed definition, it explains
the reasons for its decision below in the
discussion accompanying that
definition.
OSHA also decided not to include
several of the proposed definitions, such
as definitions of contractor, controlled
atmosphere confined space, and
isolated hazard confined space in this
final rule because OSHA did not use
these terms in this final rule. In
addition, the final rule does not include
a definition of ‘‘protect’’ or ‘‘protection’’
because the Agency believes these
terms, as used in this final rule, are
sufficiently clear from their ordinary
use. The general industry standard uses
these terms without definition. In
addition, the general industry standard
does not include a definition of
‘‘control,’’ but OSHA is including a
definition of this term in this final rule
to clarify that ventilation and other
atmospheric controls provide some level
of worker protection, even if such
measure are not fully protective.
OSHA believes that the construction
industry readily understands most of
the defined terms in the final rule
because these terms are self-explanatory
or are consistent with the definitions
used in § 1910.146 and ANSI 117.1–
2003. Nevertheless, OSHA includes an
expanded discussion for several of the
defined terms, and, when necessary,
explains differences between the
definition in the final rule and the
definitions contained in either the
proposed rule or § 1910.146(b). The
Agency also addresses comments on
terminology received during the
SBREFA process and the public
comment period, including comments
made through testimony during the
public hearing.
1. Defined Terms
Acceptable entry conditions means
the conditions that must exist in a
permit space, before an employee may
enter that space, to ensure that
employees can safely enter into, and
safely work within, the space. The
definition differs slightly from the
definition of the term in § 1910.146(b).
OSHA added ‘‘before an employee may
enter that space’’ to clarify that
employers are to measure and determine
‘‘acceptable entry conditions’’ before
entry. Once entry occurs, the employer
must continue to monitor the permit
space and terminate the entry if a
prohibited condition (i.e., a condition
that is not an ‘‘acceptable entry
condition’’) arises. (See the discussion
of final § 1926.1204(c)(1) for an
explanation of how an employer must
consider the work it will perform inside
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a confined space when identifying
‘‘acceptable entry conditions.’’) In the
NPRM, OSHA defined ‘‘planned
condition’’ in a similar manner. In the
final rule, OSHA uses and defines the
term in the same manner as the general
industry standard to provide
consistency between the two standards.
Attendant means an individual
stationed outside one or more permit
spaces who assesses the status of
authorized entrants and who must
perform the duties specified in
§ 1926.1209—Duties of Attendants. The
general industry definition of
‘‘attendant’’ refers to an attendant who
performs ‘‘all attendant duties
assigned. . ..’’ In the final construction
rule, the attendant’s duties are specified
in § 1926.1209—Duties of Attendants.
OSHA refers to an attendant’s
responsibility to ‘‘assess,’’ rather than
‘‘monitor’’ as in the general industry
standard, because ‘‘monitor’’ is a term of
art in the new standard (but not under
the general industry standard).
However, there is no substantive
difference from the definition in the
general industry standard.
Authorized entrant means an
employee who is authorized by the
entry supervisor to enter a permit space.
The general industry rule defines
‘‘authorized entrant’’ based on who the
employer authorizes to enter the permit
space. OSHA shifted the focus to who
the entry supervisor authorizes to enter
the space to avoid confusion about who
the authorizing employer is on a multiemployer worksite. This revision
clarifies that an entry supervisor has the
duty to identify the authorized entrants
on the entry permit, regardless of
whether or not they are employees of
another employer.
Barrier means a physical obstruction
that blocks or limits access. One
commenter suggested that OSHA place
a note under the definition of ‘‘barrier’’
explaining that a barrier does not block
or limit egress (ID–025, p. 2). This
revision is unnecessary because there
are provisions in the final rule that
require employers to provide
unobstructed egress when employees
are inside a confined space. For
example, final rule § 1926.1204(d)(7)
requires an employer to provide
equipment needed for safe egress from
a Permit-Required Confined Space
(‘‘PRCS’’ or ‘‘permit space’’), and final
rule § 1926.1208(e) requires the
authorized entrant to exit a PRCS as
quickly as possible under certain
circumstances. Therefore, an employer
would be in violation of this final rule
when a barrier that prohibits or limits
persons from entering a PRCS from
outside the space also prohibits or limits
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egress for authorized entrants seeking to
exit the permit space, even though the
definition of ‘‘barrier’’ does not address
egress explicitly. Locking a bolt on a
door that is the only means of egress
from a permit space, for example, could
constitute a prohibited barrier that
would interfere with egress from the
permit space.
Blanking or blinding means the
absolute closure of a pipe, line, or duct
by fastening a solid plate (such as a
spectacle blind or a skillet blind) that
completely covers the bore, and that is
capable of withstanding the maximum
pressure of the pipe, line, or duct with
no leakage beyond the plate. OSHA took
this definition directly from § 1910.146,
and uses this term the same way in this
final rule as in the general industry
standard.
Competent person means a person
capable of identifying existing and
predictable hazardous conditions, and
who has the authority to address them
promptly. Section 1926.1203 of the
proposed rule did not use or define
‘‘competent person,’’ but required the
employer to identify and assess
confined spaces. Several commenters
suggested that OSHA clarify that a
competent person make these
determinations, and to include in the
final rule the same definition for
‘‘competent person’’ as the one
contained in other OSHA construction
standards (ID–025, p. 2; –028, p. 4;
–095, p. 2; –124, p. 7; –150, p. 3). OSHA
agrees with these commenters and,
therefore, added its customary
definition to the final rule. OSHA uses
this well-known definition in several of
its construction standards. See, e.g.,
§§ 1926.32(f), 1926.450(b), 1926.650(b),
1926.751, and 1926.1401; see also the
discussion of final § 1926.1203(a) for a
further explanation of why OSHA
included a competent person
requirement in this final rule.
Confined space means a space that:
(1) Is large enough and so configured
that an employee can bodily enter it; (2)
has limited or restricted means for entry
and exit; and (3) is not designed for
continuous employee occupancy. OSHA
based the definition of ‘‘confined space’’
on the definition of ‘‘confined space’’ in
the general industry confined spaces
standard at § 1910.146(b). It describes a
space where three elements exist. First,
the configuration of the space is such
that a person can enter into it with his/
her entire body (although the ‘‘entry’’
occurs as soon as any part of the body
crosses into the confined space).7
7 See
March 5, 2008, letter to Andrew Lewis (no
confined space where it is impossible for employee
to fit his entire body into the space); October 18,
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Second, there is limited or restricted
entry or exit from the space. Third, the
space is not designed for continuous
employee occupancy.
OSHA is not including in the
definition of ‘‘confined space’’ in the
final rule the requirement that
employees be able to ‘‘perform assigned
work,’’ which it included in the general
industry definition in § 1910.146(b).
OSHA did not include this phrase in
this final standard because it was
superfluous, and to avoid arguments
that it added ambiguity. Some in the
regulated community might attempt to
interpret the phrase incorrectly to
suggest that this final standard, and the
majority of the protections provided by
the standard, would not apply if the
entrant did not have an assignment to
perform on entering the space, or if the
employee was unable to perform work
inside the space. Therefore, this final
rule addresses confined spaces in terms
of the hazards present, rather than the
purpose for entering the space. By
removing the unnecessary language
from the proposed definition of
‘‘confined space,’’ OSHA makes it clear
that this final standard covers any entry
into a confined space. This does not
imply that ‘‘performed assigned work’’
has a substantive meaning in the general
industry standard; OSHA is simply
taking the opportunity to improve the
language of the definition as it
proposed. OSHA did not include the
‘‘perform assigned work’’ language in
the proposed definition of ‘‘confined
space’’ adopted in this final rule, and
received no comment on the absence of
that language.
The final definition also includes an
additional change from the general
industry standard. The definition of
‘‘confined space’’ in § 1910.146(b)
contains examples of different types of
confined spaces in a parenthetical to the
second part of the definition. OSHA did
not include this parenthetical in this
final rule to avoid confusing these
examples with a note to § 1926.1201(a)
that provides a more comprehensive,
but not exclusive, list of examples of
confined spaces.
One commenter asserted that the
proposed definition of a confined space
is too broad because it includes attics,
crawlspaces, cabinets, unfinished
basements, swimming pools, window
wells or utility closets that contain
water heaters in single-family
residential homes, but those spaces ‘‘do
not present the kind of risk the standard
1995, letter to Charles M. Bessey (entry occurs
when any part of the body breaks the plane of the
opening of a space large enough to allow full entry,
regardless of intent to fully enter).
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is intended to address.’’ (ID–117, p. 5).
Although some of these spaces could
meet the definition of a confined space,
the Agency does not agree that this
definition is too broad. As noted earlier
when OSHA rejected the same
commenter’s request for a complete
exemption from the standard, the
commenter provides no support for the
assertion that these spaces do not
present the kind of risks this standard
is addressed and the crawl-space
fatalities included in the final economic
analysis clearly demonstrate that these
spaces are not inherently safe. OSHA
defined the term broadly to ensure that
employers perform the requisite
evaluation to determine whether a
known or potential hazard exists in
those spaces. The majority of the
requirements of this final rule would
apply only if a known or potential
hazard is found to exist in the confined
space, but the initial assessment
required by this standard is crucial to
discovering whether such hazards are
present. Therefore, an employer
performing construction work inside
attics or any of the other spaces noted
by this commenter must comply with
only the reevaluation provisions in this
final rule when no atmospheric or
physical hazard exists in a confined
space. If an employer does not wish to
conduct an evaluation, then the
employer can either prevent its
employees from entering the space or
design the construction process to avoid
the need for entry into a confined space.
One commenter expressed confusion
as to the meaning of the third element
of the confined space definition: ‘‘not
designed for continuous employee
occupancy’’ (ID–119, p. 5). The third
element captures all spaces where
conditions are such that employees
would normally exit the space relatively
soon after entering, absent the
construction activity. When determining
whether a space is designed for
continuous occupancy, it is appropriate
to focus on the design of the space and
whether that space is still configured as
designed. See October 22, 1993, letter to
Robert Bee; December 20, 1994, letter to
Edward Donoghue; June 22, 1995, letter
to Dan Freeman (noting difference
between the ‘‘primary function’’ and
‘‘design’’ of a confined space). For
example, if a space that meets the
definition of a confined space has a
powered ventilation system that allows
for continuous occupancy, but that
system is not functional or the
construction activity would interfere
with the proper function of that system,
then the space would be a confined
space subject to this final standard. See
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October 27, 1995, letter to William
Taylor.
The same commenter also asked for
additional examples of confined spaces
(ID–119, p. 5). The note in final rule
§ 1926.1201(a) provides examples of
locations where confined spaces may
occur. In addition, OSHA notes that
numerous letters of interpretation are
available providing additional guidance
as to the meaning of a ‘‘confined space’’
in the context of the general industry
standard. OSHA is adopting into its
construction rule the guidance regarding
the definition of a confined space
provided by the letters of interpretation
referenced in the previous paragraph. In
addition, the following letters apply
with respect to the definition of a
confined space in this final standard as
they did to the general industry
standard: September 19, 1994, letter to
Edward Donoghue Associates, Inc.
(elevator pit can be a confined space);
June 15, 1992, letter to George Kennedy
(storm sewer manhole entrance can be
a confined space); July 11, 1995, letter
to Alan Sefton (entry by a robot does not
trigger the standard); October 23, 1995,
letter to Mark Arriens (roll off container,
dump truck bed, and truck trailer can be
confined spaces); October 27, 1995,
letter to James Sharpe (entry limited if
employee must bend down to avoid
striking the top of an opening or step
over a raised threshold); February 8,
1996, letter to Remi Morrissette
(personnel airlock can be a confined
space when both sets of doors cannot
open at the same time); April 24, 1998,
letter to Gregory Faeth (30-inch deep
chest-type freezer not a confined space
when person can simply stand up to get
out); December 2, 2002, letter to Art
Varga (dock leveler pit can be a
confined space); March 8, 2005, letter to
Ron Sands (box van of truck is not a
confined space as normally used and
configured). The Agency notes,
however, that any guidance previously
provided with respect to its previous
confined spaces in construction
standard, 29 CFR 1926.21, is no longer
applicable or in effect. See, e.g., July 10,
2006, letter to John Williams II.
One commenter requested that OSHA
clarify the distinction between an
‘‘enclosed space’’ and a ‘‘confined
space,’’ and another commenter
suggested that OSHA provide additional
discussion of the hazards of an
‘‘enclosed space’’ in this final rule (ID–
119, p. 6; –140, p. 4). As OSHA stated
in the preamble to the proposed rule,
the Small Business Advocacy Review
Panel recommended that OSHA
examine the benefits and costs
associated with provisions addressing
hazardous-enclosed spaces (72 FR
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67398 (Nov. 28, 2007)). Consequently,
the Agency decided not to include any
new or additional requirements for
hazardous-enclosed spaces in the final
rule. Instead, OSHA relies on existing
standards, such as § 1926.55—Gases,
vapors, fumes, dusts, and mists, to
address the hazards of working inside
enclosed spaces. OSHA Technical
Information Bulletin 02–05–30 is
available to employers who are looking
for guidance on the particular hazards of
working in enclosed spaces. For
example, this bulletin states that the
OSHA respirator standard may apply
when employees are working in
enclosures that do not meet the
definition of ‘‘confined space.’’
Another commenter questioned the
inclusion of spaces equipped with
ladders or stairways for employee entry
or exit in the proposed definition of
‘‘confined space’’ (ID–013, p. 5). Both
the proposed and final definitions of
‘‘confined space’’ include ‘‘limited or
restricted’’ entry or exit. A space where
an employee can enter or exit only with
the use of a stairway or a ladder, like an
attic, generally meets this definition of
a confined space. See, e.g., October 27,
1995, letter to James Sharpe. The
following guidance provided earlier by
OSHA with respect to the general
industry standard definition of this term
also is applicable to this construction
standard:
Ladders, and temporary, movable, spiral,
or articulated stairs will usually be
considered a limited or restricted means of
egress. Fixed industrial stairs that meet
OSHA standards will be considered a limited
or restricted means of egress when the
conditions or physical characteristics of the
space, in light of the hazards present in it,
would interfere with the entrant’s ability to
exit or be rescued in a hazardous situation.
OSHA Directive CPL 02–00–100:
Application of the Permit-Required
Confined Spaces (PRCS) Standards, 29
CFR 1910.146 (May 5, 1995), Appendix
E.
OSHA also clarified in the context of
the general industry confined spaces
standard that, although the Agency does
not generally consider doorways and
other portals through which a person
can walk to be limited means of entry
or exit, it may deem a space containing
such a door or portal to be a confined
space if the door or portal hinders an
entrant’s ability to escape from the
confined space in an emergency (see 59
FR 55208 (Nov. 4, 1994)). The same
interpretation applies in the
construction context. OSHA provided
the following explanation in its
compliance directive on the general
industry rule, which also applies in the
construction context:
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A space has limited or restricted means of
entry or exit if an entrant’s ability to escape
in an emergency would be hindered. The
dimensions of a door and its location are
factors in determining whether an entrant
can easily escape; however, the presence of
a door does not in and of itself mean that the
space is not a confined space. For example,
a space such as a bag house or crawl space
that has a door leading into it, but also has
pipes, conduits, ducts, or equipment or
materials that an employee would be
required to crawl over or under or squeeze
around in order to escape, has limited or
restricted means of exit. A piece of
equipment with an access door, such as a
conveyor feed, a drying oven, or a paint spray
enclosure, will also be considered to have
restricted means of entry or exit if an
employee has to crawl to gain access to his
or her intended work location. Similarly, an
access door or portal which is too small to
allow an employee to walk upright and
unimpeded through it will be considered to
restrict an employee’s ability to escape.
OSHA Directive CPL 02–00–100:
Application of the Permit-Required
Confined Spaces (PRCS) Standards, 29
CFR 1910.146 (May 5, 1995), Appendix
E.
Another commenter asked OSHA to
clarify whether a space that is
temporary can still meet the definition
of a confined space in the final rule (ID–
136, p. 2). For example, the commenter
asserted that a space constructed for the
sole purpose of allowing employees to
temporarily work over the end of a large
open gas pipe could qualify as a
confined space. In this particular
example, the commenter emphasized
the need for an employer to address the
hazard of establishing an oxygendeficient atmosphere as a result of
purging the pipe with nitrogen.
OSHA agrees that a temporary space,
including the temporary space provided
in the commenter’s example, can be a
‘‘confined space.’’ The fact that the
space described by the commenter is
temporary does not prevent the space
from meeting the definition of a
confined space in this final rule. The
temporary character of the space may be
the most readily apparent factor in
determining whether a temporary space
would permit continuous employee
occupancy.
OHSA did not define the term
‘‘contractor’’ in the final rule, as it did
in the proposed rule. One commenter
recognized that OSHA’s proposed
definition of ‘‘contractor’’ excluded
controlling contractors (ID–099, p. 1).
To simplify the terminology used
throughout the standard, to address the
inconsistency identified by the
commenter, and to avoid other
confusion with the term ‘‘controlling
contractor,’’ OSHA is using terms more
precisely in the final rule. OSHA uses
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the term ‘‘employer’’ to refer generically
to employers, including employers that
meet the final rule’s definitions of
‘‘controlling contractor’’ or ‘‘host
employers.’’ OSHA also added the term
‘‘entry employer’’ to refer to employers
performing confined-space entry. As
discussed elsewhere in this preamble
the Agency also is using ‘‘controlling
contractor’’ and ‘‘host employer’’ to
refer to other specific types of
employers when necessary.
Control, as defined in this final
standard, is an action taken, through
engineering methods, to reduce the
hazard level inside a confined space,
including the maintenance of this
reduced hazard level. This definition is
consistent with the use of the term in
the general industry confined spaces
standard, although OSHA did not define
the term in § 1910.146(b). The proposed
rule’s definition of ‘‘control’’ provided
isolation as an example of a control
action. However, controlling a hazard
provides less protection to an employee
than isolating the hazard because it does
not result in the elimination or removal
of the hazard. For example, ventilation
is a control method that merely reduces
the hazard level below its Permissible
Exposure Limit (PEL) or Lower
Explosive Limit (LEL) for the duration
needed to protect employees in or near
a confined space. Therefore, OSHA
deleted the reference to isolation from
the final standard to clarify the
distinction between control and
isolation. Otherwise, the final standard
defines the term as proposed.
Controlling contractor is the employer
that has overall responsibility for
construction at the worksite. In
addition, the note to this definition
explains that, if a host employer has
overall responsibility for construction at
the worksite, then the host employer
also is the controlling contractor under
this final rule. The final rule’s definition
of ‘‘controlling contractor’’ is identical
to the proposed rule’s definition. The
general industry confined spaces
standard does not use the term
‘‘controlling contractor’’ and, therefore,
§ 1910.146(b) does not define the term.
OSHA included a definition of
‘‘controlling contractor’’ in this final
rule because it is a common practice in
construction work for a number of
employers to be working at a
construction site at the same time. Also,
there often is one employer that has
overall authority over the construction
site, including the authority to change
worksite conditions, set schedules, and
alter work practices with regard to
safety. This definition is nearly identical
to the definition of the term as used in
the OSHA’s Steel Erection standard at
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29 CFR part 1926, subpart R. The
definition reflects the core principle of
general supervisory control over the
construction site. Under this final rule,
OSHA clarified the responsibilities of
different employers on the site and
assigned specific duties to the
controlling contractor, as distinguished
from the host employer and the other
employers (see final § 1926.1203(h)).
Consequently, there is a need to define
the term ‘‘controlling contractor.’’
Some commenters were unsure
whether an employer with no
contractual authority for the overall
safety of a project could qualify as a
‘‘controlling contractor’’ (ID–106, p. 2;
–129, p. 2). Another commenter asserted
that an employer will have extreme
difficulty exercising the control required
by the standard without explicit
contractual authority to do so (ID–120,
p. 2). The facts and circumstances
present at the job site determine
whether an employer is a controlling
contractor under this final rule: explicit
contractual authority is sufficient to
indicate a controlling contractor, but the
absence of contractual authority is not
definitive. In this regard, OSHA intends
the controlling contractor’s authority to
be established in the same manner that
a controlling employer’s authority is
established under OSHA’s MultiEmployer Citation Policy. For more
information about the role of the
controlling employer, see OSHA
Directive CPL 02–00–124: MultiEmployer Citation Policy.
Double block and bleed means the
closure of a line, duct, or pipe by
closing and locking or tagging two inline valves and by opening and locking
or tagging a drain or vent valve in the
line between the two closed valves. This
can be done to eliminate the potential
for substances in the sections of the
pipes to enter the space. OSHA took this
term directly from § 1910.146. The
proposed definition was different
grammatically, and also specified the
exact position in which the closures
were to be locked or tagged, but there
is no substantive difference between the
final language and the language in the
proposed rule.
Early-warning system is the method
used to alert attendants, as well as
authorized entrants in a permit space,
that an engulfment hazard may be
developing. Examples of early-warning
systems include: alarms activated by
remote sensors and lookouts with
equipment for immediately
communicating with the authorized
entrants and attendants. OSHA did not
revise the definition from the proposed
rule, other than to use ‘‘assess’’ rather
than ‘‘monitor’’ because the latter is
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now a defined term under the standard.
Although § 1910.146 does not explicitly
include the ‘‘early warning system’’, the
Agency included the term in the final
rule to ensure that the regulated
community understands that these
systems must provide an effective
means of warning attendants and
authorized entrants that a non-isolated
engulfment hazard may be developing
in an area where it could flow into the
work area. A clear understanding of this
term will help employers ensure that
authorized entrants have sufficient time
to safely exit the space (see explanation
of § 1926.1204(e)(1) below in this
preamble). As illustrated by the nonexhaustive list of examples of earlywarning systems in this definition,
employers have flexibility regarding the
type of early-warning system to use for
continuously monitoring engulfment
hazards. However, as stated in final rule
§ 1926.1204(e)(1)(iii), whatever warning
system an employer selects, it must alert
authorized entrants and attendants in
sufficient time for the authorized
entrants to safely exit the space.
Emergency means any occurrence
inside or outside a space that could
endanger an entrant. The definition is
similar to the definition in the general
industry standard, and is not
substantively different from the
definition provided in the proposed
rule. The only distinction between the
general industry standard and the final
rule is that the final rule includes a loss
of power in the non-exhaustive list of
examples of emergencies. OSHA is
specifying power loss to make it clear
that unexpected loss of power can
endanger entrants, particularly if the
permit plan relied on the use of
ventilation, monitoring, controls,
communication with the attendant, or
egress that would be affected by the loss
of power. The definition is important
because 1204(d)(5) requires employers
to provide adequate lighting for egress
in an emergency.
One commenter urged OSHA to
clarify that an occurrence constituting
the emergency must involve the work
performed in the confined space (ID–
099, p. 1). For example, in this
commenter’s view a heart attack that
does not involve the working conditions
in a confined space, but occurs while an
employee is working in or near a
confined space, would not qualify as an
‘‘emergency’’ under § 1926.1202. OSHA
disagrees with this comment, and is not
making this revision because the final
standard uses the term ‘‘emergency’’
with respect to the provision of rescue
services. (See, e.g., final § 1926.1204(i),
which requires the employer to develop
and implement procedures for
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responding to emergencies.) The Agency
believes that an emergency occurs
regardless of whether or not it is
foreseeable based on the work the
employee is performing within or near
the confined space. Under the rescue
provisions of this final standard,
emergencies, regardless of their cause,
require employers to initiate rescue of
the affected employees working inside
the confined space because of restricted
access to, and egress from, the confined
space.
Engulfment refers to the surrounding
and effective capture of a person by a
liquid or finely divided (flowable) solid
substance, such as water, dirt, sand,
sawdust, or rocks. Any solid or liquid
that can flow into a confined space and
that can drown, suffocate, or crush an
employee can be an engulfing medium.
This definition is nearly identical to the
definition of the same term in
§ 1910.146, except that it also includes
‘‘or suffocation’’ at the end of the
definition, paraphrasing the following
additional language from the proposed
rule: ‘‘or the substance suffocates the
individual.’’ This additional language
clarifies that the definition includes
suffocation that does not result from
strangulation, constriction, or the
blockage of any respiratory mechanism.
For example, the definition includes
surrounding an employee with a
flowable material even if personal
protective equipment or some other
barrier (for example. a person trapped in
sand while wearing respirator mask
with an enclosed air source) delays
immediate drowning or suffocation. The
final definition does not differ
substantively from the definition in the
proposed rule, and OSHA received no
comments on the proposed definition.
Entry means the action by which any
part of a person passes through an
opening into a permit-required confined
space. Entry includes ensuing work
activities in that space, and occurs as
soon as any part of the entrant’s body
breaks the plane of an opening into the
space, whether or not such action is
intentional or the person performs any
work activities in the space. This
definition is similar to the definition of
‘‘entry’’ in § 1910.146(b), except OSHA
added the last clause to clarify that this
is a bright-line definition: entry occurs
under all circumstances in which the
entrant’s body breaks the physical
threshold of the opening, regardless of
the events or actions that caused entry.
For example, when an employer assigns
an employee a task that would not
ordinarily involve entry into a confined
space, and the employee inadvertently
falls into the confined space and does
not perform any work in that space, the
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employee entered the space at the
instant the first part of the employee’s
body crosses the plane of the confined
space. This clarification is consistent
with OSHA’s longstanding
interpretation of the general industry
standard. See October 18, 1995, letter to
Charles Bessey. As a result, an entry
employer’s duty to prevent
unauthorized entry under
§ 1926.1204(a) means that the employer
must take the necessary steps, such as
installing barriers when appropriate, to
prevent both intentional and
unintentional entries.
As noted in the explanation for the
definition of ‘‘confined space,’’ a space
must be large enough to fit the entering
employee’s entire body to constitute a
confined space. However, if the space is
large enough to qualify as a confined
space, any entry into that space
constitutes an entry, even if the
employee’s entire body does not enter
the space. This application is consistent
with OSHA’s design of this final
standard: to ensure that this
construction rule is enforceable.
Therefore, OSHA declines to
incorporate into this final rule its
previous guidance offered with respect
to the general industry rule to the extent
that the guidance indicated that entry
would not take place if only part of the
body, and not the whole body, crossed
the plane of the confined space. See July
13, 1993, letter to Dean Davenport (no
entry into water pipe when employee
stuck in an arm, but not the whole
body). Absent some safeguard to ensure
that the rest of the employee’s body
could not cross the threshold into the
confined space, the likelihood of
inadvertent entry into a space in the
context of construction warrants a strict
approach that differs from the more
routine entries often associated with
maintenance under the general industry
standard. For example, an employee
who sticks his/her head into a new
space established during construction
may be overcome by fumes and fall into
the space or be rendered unable to
remove his or her head from the space
and avoid further exposure to the
hazards.
The definition of ‘‘entry’’ in this final
rule is slightly different than the
proposed definition, but the differences
do not change the substantive meaning
of the term as proposed. OSHA made
these changes to the proposed definition
to make the final definition of ‘‘entry’’
similar to the definition of the term in
§ 1910.146(b).
Entry employer means an employer
who decides that an employee it directs
will enter a permit space. Paragraph (b)
of § 1910.146 does not use the term
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25383
‘‘entry employer’’; instead, the general
industry standard refers generally to
‘‘employer.’’ In general the term ‘‘entry
employer’’ in this final rule and the
term ‘‘employer’’ in § 1910.146(b) are
synonymous because both terms
identify the employer who must follow
the accompanying confined-space
procedures for employers that plan to
enter a permit space. However, OSHA
uses this term in this final rule to clarify
that not all employers on a multiemployer worksite have duties
associated with entering a permit space.
On a multi-employer worksite, each
employer has a duty under this new
standard to ensure that a competent
person identifies all confined spaces in
which any employee it directs may
work (§ 1926.1203(a)). Each employer
must then prevent the employees it
directs from entering permit spaces or
limit access to those spaces in
accordance with the permit procedure
(or alternatives) specified in this
standard (see § 1926.1203(a) and (c)–
(e)). Under the standard, an entry
employer has a number of important
duties that must be performed prior to
anyone physically entering a permit
space, such as the requirements for preentry information exchanges in
§ 1926.1203(h) and the duty to develop
and implement a permit program to
restrict access under § 1926.1204.
Therefore, under the definition, an
employer becomes an entry employer
when it ‘‘decides that’’ an employee it
directs will enter, rather than at the later
point when the employee actually
enters. An employer can be an entry
employer regardless of whether that
employer has completed any of the
steps of instituting a permit program or
an employee has actually entered the
space.
However, OSHA does not intend for
the ‘‘decides that’’ language in the
definition to narrow the meaning of
‘‘employer’’ in any way or to focus on
any deliberative or procedural process.
OSHA has added a note to the definition
of ‘‘entry employer’’ to emphasize that
an employer cannot avoid the duties of
the standard merely by refusing to
decide whether its employees will enter
a permit space, and OSHA will consider
the failure to so decide to be an implicit
decision to allow employees to enter
those spaces if they are working in the
proximity of the space.
The ‘‘an employee it directs’’ language
encompasses temporary workers,
permanent employees, and all other
workers who are under the direction of
the employer at the worksite, whether
they are contracted directly or through
a third party such as a staffing agency.
For example, when a general contractor
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contracts with a third party to bring on
a temporary worker and assigns the
worker to work in a permit space, the
general contractor is an entry employer.
However, if the temporary employee is
assigned to a welding subcontractor,
and the welding contractor makes the
determination of where the temporary
employee will work without direction
from the general contractor, then the
welding subcontractor would be the
entry employer. The general contractor
would not be an entry employer in the
latter example.
Entry permit means the document,
provided by the entry employer, which
allows and controls entry into a permit
space. Section 1926.1206—Entry Permit
of this final standard specifies the
contents of the permit. As part of its
effort to specify the duties and
responsibilities of different employers
on a multi-employer worksite, OSHA
specifies that the employer ‘‘who
designated the space a permit space,’’
must prepare the permit, rather than just
‘‘the employer’’ as in § 1910.146. This
definition is otherwise identical to the
definition in § 1910.146(b). In a typical
multi-employer worksite, all employers
would have the duty to identify
confined spaces that their employees
might enter, but only some employers
must establish a permit program and
complete permits.
Entry rescue means rescue that occurs
when a rescue service enters a PRCS to
rescue one or more employees. This
definition is identical to the proposed
definition of ‘‘entry rescue,’’ except that
the Agency clarifies that the term
includes a rescue of a single employee.
Section 1910.146(b) does not define
‘‘entry rescue’’ because the general
industry standard does not use the term.
The term is included in this final rule
to make the requirements for each type
of rescue more clear.
Entry supervisor means the qualified
person (such as the employer, foreman,
or crew chief) assigned by the employer
to determine if acceptable entry
conditions are present at a permit space
where entry is planned, to authorize
entry and oversee entry operations, and
to terminate entry as required by the
final standard. This definition is
identical to the definition provided in
§ 1910.146(b), except that OSHA
replaced ‘‘person’’ with ‘‘qualified
person’’ as in the proposed rule (the
proposed rule used ‘‘qualified
individual’’), to clarify that the
individual must meet the requirements
for ‘‘qualified person’’ as defined later
in this section. The note to this
definition, which clarifies that the entry
supervisor may enter the permit space
or serve as an attendant if the applicable
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requirements are met, is identical to the
note in the general industry definition.
Hazard means a ‘‘physical hazard’’ or
‘‘hazardous atmosphere’’ as defined by
this standard. The proposed rule
defined this term, and OSHA is
including it here to clarify that
references to a ‘‘hazard’’ or ‘‘hazards’’
can mean either physical or atmospheric
hazards, or both.
Hazardous atmosphere refers to the
five enumerated atmospheres, any one
of which may expose employees to the
risk of death, incapacitation,
impairment of ability to self-rescue (that
is, unaided escape from a permit space),
injury, or acute illness. The proposed
definition of ‘‘hazardous atmosphere’’
varied slightly from the definition in
§ 1910.146(b), and several commenters
requested that OSHA make the
definition in this final rule more similar
to the definition in § 1910.146(b) (ID–
017, p. 1; –132, p. 2; –138, p. 3; –153,
p. 12). OSHA did so, as explained
below, and the final definition is
substantively identical to the definition
in the general industry standard.
One commenter noted that the
proposed definition included ‘‘existing
or potential’’ atmospheres, and argued
that this language, combined with
OSHA’s failure to include a note that is
part of the general industry definition of
‘‘hazardous atmosphere,’’ constituted an
inappropriate expansion of the scope of
this final standard compared to the
general industry standard (ID–219.2, p.
72). OSHA addressed this commenter’s
concerns by adopting the general
industry language, which does not refer
to ‘‘existing or potential’’ atmospheres,
and also included the note favored by
the commenter. See the note after the
fourth enumerated paragraph in the
definition, which is substantively
identical to the note in the general
industry standard.
The five enumerated paragraphs or
conditions in the definition address four
specific types of hazardous atmospheres
and a broad condition that encompasses
any other atmosphere that is
immediately dangerous to life or health.
The first enumerated condition
addresses an atmospheric condition that
consists of a flammable gas, vapor, or
mist in excess of 10 percent of its lower
flammable limit (LFL). OSHA set this
level to account for the difficulty
employers have in detecting each and
every flammable gas vapor, or mist. The
LFL, as it is defined by the confined
spaces in construction standard, refers
to the minimum concentration of a
substance in air needed for an ignition
source to cause a flame or explosion.
The LFL of the atmosphere is a
cumulative measure that represents the
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mixture of different flammable
elements, not just the presence of a
single element that could lead to an
explosion. Therefore, for the reasons
explained below, OSHA has defined
hazardous atmosphere as any
atmosphere at or above 10 percent of a
detected substance’s LFL (10 percent
LFL) to provide an adequate safety
margin, and to ensure that an
atmosphere does not exceed the LFL if
one of a combination of substances goes
undetected.
OSHA specifically asked for public
comment on the propriety of defining a
hazardous atmosphere for purposes of
the confined spaces in construction
standard at 10 LFL when
§ 1926.651(g)(1)(iii) prohibits exposure
to atmospheres in excavations
exceeding 20 percent of the LFL (20
percent LFL). Some commenters urged
OSHA to permit 20 percent LFL in this
final rule for the sake of uniformity,
while another commenter favored this
change only if credible data justifies this
uniform LFL (ID–090, p. 1 and ID–108,
p. 6; ID–060, p. 1, respectively). Other
commenters, however, indicated that 10
percent LFL was more appropriate, and
recommended that OSHA revise the
subpart P LFL to 10 percent LFL to
provide adequate safety to employees
working in excavations (ID–132, p. 3;
–140, p. 6). This last group of
commenters noted that using 10 percent
LFL would align the definition of
‘‘hazardous atmosphere’’ in this final
rule with the general industry confined
spaces rule at § 1910.146(b) and ANSI
Z–117.1. One commenter also noted that
because the LFL of many common
petroleum based materials is
approximately 1 percent of the total
volume of the atmosphere, which would
convert to 10,000 parts per million
(ppm), 10 percent of that LFL is 1,000
ppm, which approaches the
immediately dangerous to life or health
(IDLH) (see below) level for many
materials (ID–132, p. 3).
OSHA selected the 10 percent LFL in
the final rule to match the general
industry standard. As the Agency
explained when selecting the 10 percent
LFL in § 1910.146(b), the 10 percent
level is ‘‘widely recognized as being the
threshold value for a hazardous
atmosphere’’ (58 FR 4473). The record
indicates that this lower level continues
to be more widely used and more
appropriate than the 20 percent LFL
suggested by the commenter,
particularly now that the general
industry standard is nearly 20 years old.
(See also ANSI Z–117.1 (setting the
maximum level at 10 percent LFL);
ANSI 6.3.1.12 (setting the maximum
level at less than 10 percent LFL.))
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Moreover, the record does not include
credible data to justify why the 20
percent LFL would be more appropriate
for a confined space. OSHA may
consider amending subpart P to a
similar level in the future, but that
decision is outside the scope of this
rulemaking.
The second enumerated condition in
the final definition addresses
‘‘hazardous atmosphere’’ consisting of
an airborne combustible dust at a
concentration that meets or exceeds its
lower flammable limit (LFL). One
commenter asked why OSHA did not
propose a 10 percent LFL for
combustible dust, similar to OSHA’s
approach for flammable gas, vapor, or
mist in the first condition under this
definition (ID–112, p. 6). OSHA did not
propose a percentage of the LFL in
defining a hazardous airborne
combustible-dust concentration level for
several reasons. Employers usually can
visually judge the flammability hazard
posed by airborne dust. Moreover, as
OSHA noted in the preamble to the
general industry standard, it is difficult
at present to measure airborne
concentrations of combustible dust
reliably at a site, so there likely would
be significant delays in determining
whether the level of combustible dust
meets the LFL at a particular site.
Therefore, LFL determinations would
appear to be unnecessarily burdensome
with regard to combustible dust. OSHA
concludes that the final rule will protect
employees adequately so long as
employers train their employees in the
recognition of combustible dust, and
ensure that the concentration of
combustible dust remains below its LFL.
For this reason, OSHA has
incorporated the note for this condition
from § 1910.146(b), except that it has
added the word ‘‘combustible’’ before
‘‘dust’’ to clarify the meaning of the
note, and made a minor additional
change from the proposed rule to make
the final definition identical to
§ 1910.146(b). OSHA used LFL in this
final rule definition, rather than ‘‘lower
explosive limit (LEL),’’ which OSHA
used in the proposed definition. OSHA
notes, however, that the Agency uses
these terms interchangeably. (See, e.g.,
proposed definition of ‘‘lower
flammable limit or lower explosive
limit’’ at 72 FR 67406.)
The third condition of a hazardous
atmosphere in this definition addresses
the conditions of an atmospheric oxygen
concentration below 19.5 percent
(‘‘oxygen deficient’’) or above 23.5
percent (‘‘oxygen enriched’’) in a
confined space. Four commenters
suggested that OSHA change the
oxygen-enriched level from 23.5 percent
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to 22 percent, which they noted is the
level set by the National Fire Protection
Association (NFPA) 8 (ID–25, p. 2; –27,
p. 6; –28, p. 4; 95, p. 1). Two
commenters suggested that increases in
oxygen levels due to leaks of
compressed oxygen used in ‘‘hot work’’
would more easily be detected if the
maximum acceptable oxygen level was
22 percent instead of 23.5 percent (ID–
95, p.1), as it is in the rules for maritime
work. The commenters did not,
however, provide any data or other
information supporting the suggestion
that the proposed level, which is
identical to the level in the general
industry standard, is not sufficiently
protective. The absence of such
information, the lack of incidents
caused by oxygen levels between 22 and
23.5 percent lead OSHA to conclude
that the difference is not significant. In
addition, this consistency benefits
employers that engage in both general
industry and construction work. OSHA
finalized the level at 23.5 percent so that
it is consistent with the general industry
confined spaces standard at
§ 1910.146(b), as well as the definition
of ‘‘enriched oxygen’’ in OSHA’s
Respiratory Protection standard. This
oxygen-enriched level also is the same
as the level in the proposed definition
of ‘‘hazardous atmosphere.’’ OSHA
continues to believe that the 23.5
percent level provides a sufficient
amount of time for employers to detect
a hazardous oxygen-enriched
atmosphere, and to exit the space safely,
before the oxygen level gets so high that
it begins to have adverse effects on the
exposed employees. Other standards,
such as Subpart J—Welding and Subpart
V—Electronic Transmission and
Distribution, set forth protective
requirements for employees engaged in
‘‘hot work’’ that address the
commenters’ concerns.
Additionally, OSHA recognizes that
safe levels of oxygen vary with altitude,
and that concentrations of oxygen at or
above the oxygen deficient limit of 19.5
percent in this final rule may still pose
atmospheric hazards at very high
altitudes. For example, ANSI/ASSE
Z88.2–1992 recognizes an IDLH
circumstance at altitudes of 5,000 ft.
above sea level or higher, if the oxygen
concentration is at 19.5 percent.9 The
8 NFPA 53 defines ‘‘oxygen-enriched
atmosphere’’ as one in which the concentration of
oxygen exceeds 21 percent by volume or its partial
pressure exceeds 21.3 kPa. (See NFPA 53,
Recommended Practice on Materials, Equipment,
and Systems Used in Oxygen-Enriched
Atmospheres, 2011 Edition at 3.3.25).
9 The Agency also notes that an updated revision
of ANSI/ASSE Z88.2–1992 was forthcoming at the
time of its development of this final rule. The draft
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Agency believes that most confinedspace work takes place at altitudes
lower than 5,000 ft. above sea level, and
retains the 19.5 percent oxygen deficient
limit in this final rule. However, the
Agency notes that to the extent a high
altitude causes an otherwise permissible
oxygen concentration to become IDLH,
such circumstances may also result in a
‘‘hazardous atmosphere’’ as set forth in
the fifth condition in OSHA’s definition,
which defines a ‘‘hazardous
atmosphere’’ to include any other
atmospheric condition that is IDLH.
The fourth condition in the definition
of ‘‘hazardous atmosphere’’ addresses
an airborne concentration of a substance
that exceeds the permissible dose or
exposure limit specified by OSHA. The
final definition includes crossreferences to the applicable PELs in
subparts D—Occupational Health and
Environmental Controls and Z—Toxic
and Hazardous Substances of 29 CFR
part 1926, rather than the general
reference to PELs specified in ‘‘any
OSHA requirement’’ contained in the
proposed rule. The form of the
definition now duplicates the form
found in the general industry standard.
In addition, removing the reference to
‘‘any OSHA requirement’’ avoids the
implication that PELs in general
industry standards would apply to
construction work.
One commenter requested that OSHA
insert a note under this fourth condition
explaining that the PELs in § 1910.1000
also would apply under this condition
(ID–028, p. 5). OSHA did not include a
reference to § 1910.1000 because those
general industry PELs do not apply to
construction work. Section 1926.55
establishes the relevant PELs for
construction.
OSHA did, however, include a note to
the fourth condition of the definition
that is substantively identical to the
note to the fourth subheading of the
§ 1910.146(b) definition of ‘‘hazardous
atmosphere,’’ except that OSHA
changed the word ‘‘provision’’ to
‘‘definition’’ to make it clear that the
note applies to the types of hazards
covered by the definition of ‘‘hazardous
atmosphere.’’ OSHA sets its
construction PELs at different levels for
different reasons; some of these PELs
prevent harm from substances that
manifest quickly in the human body,
such as [hydrogen sulfide and carbon
monoxide, among others], while OSHA
sets other PELs prevent harm from
substances that produce long-term
health effects but do not produce any
acute effect on employees. The note
of the updated standard appeared to be consistent
with the 1992 version on this issue.
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makes clear that, for the purposes of
determining whether a hazardous
atmosphere exists under this final rule
as the result of a concentration of a
substance in excess of its PEL,
employers need to address only the
substances with PELs that could result
in immediate harm or impairment of the
employee’s ability to perform selfrescue. See also the discussion in the
general industry preamble at 58 FR
4474. For example, a short-term
exposure to silica is unlikely to cause
immediate injury. Likewise, nitrogen
and carbon dioxide will not impair selfrescue unless their levels are so high
that they replace significant oxygen, so
that they act as an asphyxiant. The same
is true for any inert gases, for example
argon, neon and helium. Most of the
substances with an OSHA PEL (in
subparts D and Z of the construction
standards) are based on long-term,
chronic risks to health. Presumably,
most of these substances do not pose a
risk of an acute health effect or of selfrescue at exposure levels near the PEL.
However, if extremely high levels of
exposure far above a PEL occurred, one
of these substances could potentially
pose a risk to self-rescue, which would
in turn trigger the fourth condition of
hazardous atmosphere.
The note also addresses a comment
that PELs regulating substances with
long-term effects, such as iron oxide
emitted during welding or xylene
emitted when painting, should not
automatically trigger the PRCS
requirements (ID–028). While OSHA
agrees that iron oxide by itself would
not trigger permit restrictions because
the symptoms of iron oxide exposure
would generally not prevent an entrant
from exiting a confined space, xylene is
highly flammable and would therefore
present a hazard if the potential exists
for the concentration of xylene to
exceed the LFL.
A different commenter suggested that
OSHA avoid potential confusion by
rearranging the order in which the
subparagraphs in the definition of
‘‘hazardous atmosphere’’ are presented
to reflect the order in which OSHA
requires atmospheric testing and
monitoring (oxygen content,
flammability, then toxicity—see
§ 1926.1204(e)(3) of the final rule) (ID–
132, p. 2). OSHA does not agree that the
order of presentation in this definition
is likely to cause confusion, particularly
when the actual order of testing is
spelled out in § 1926.1203(e). OSHA did
not make this change in the final rule so
that it could to keep the definition of
‘‘hazardous atmosphere’’ in this final
rule similar to the definition of that term
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in § 1910.146(b), including the order of
the listed conditions.
Host employer means the employer
that owns or manages the property
where the construction work is taking
place. As explained in the definition of
‘‘controlling contractor,’’ OSHA added
this definition to clarify the distinction
between a host employer, a controlling
contractor, and an employer performing
confined space entry because each of
these entities has specific obligations
under this final rule. (See the discussion
under ‘‘controlling contractor’’ above.)
OSHA used the term ‘‘host employer’’ in
the general industry standard without
defining it, but the definition in this
final rule is consistent with the use of
the term in that general industry
standard. It is also substantively the
same as the proposed definition.
One commenter asserted that an
employer should never meet the
definition of ‘‘host employer’’ if the
employer ‘‘had no employees at all (a
home owner, for example, might fit this
category) or had no employees ‘engaged
in construction work’ (an owner of an
office building might fit this category)’’
(ID–117, p. 5). OSHA notes that it has
already addressed the commenter’s first
concern because an entity only meets
the definition of a ‘‘host employer’’
under the final rule if it is ‘‘an
employer.’’ OSHA disagrees with the
commenter’s second assertion, and has
addressed the propriety of placing
duties on the host employer, and
OSHA’s authority for doing so, in the
discussion of § 1926.1203(h) later in this
preamble.
OSHA also added a note to the
definition of ‘‘host employer’’ to address
situations in which the owner of the
property contracts with a management
company to manage the property. OSHA
understands that this type of
arrangement is somewhat common with
commercial properties, and that in
many cases the management company
will be the principal custodian of
blueprints and other information about
the property that identifies confined
spaces on the property or is otherwise
relevant to confined spaces work on that
property. Because the host-employer
requirements in final § 1926.1203(h)(1)
are designed to ensure that relevant
information about the property and
known hazards therein is conveyed to
employers who will be performing work
in confined spaces, OSHA clarifies in
the note that the entity that possesses
that information, either the owner or the
management company, will serve as the
host employer for the purposes of this
standard for as long as the company
manages the property (if there is a
change in management companies, the
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initial management company would
return the information to the owner, and
the host employer duties would revert
to the property owner until discharged
to the new management company). The
note also clarifies that only one of these
entities will serve as a host employer. If
a property owner contracts with a third
party to manage the property, turns over
all relevant information about the
property that it has (the locations of
permit space the hazards they contain,
and the previous precautions used to
address them) to the management
company, then OSHA will treat the
management company (not the property
owner) as the ‘‘host employer’’ under
this standard. That management
company, rather than the owner, must
then maintain the relevant information
about the property and fulfill the duties
of the host employer under this
standard (e.g., share that information
with the controlling contractor). For
example, if the owner transfers its
records to the management company,
including a map of the property
showing a confined space marked for
storage of containers of flammable
liquids, then the management company
must relay to the controlling contractor
hired to oversee welding operations the
location of that space, its contents, and
any previous measures used to address
them (e.g., ‘‘when the painters came,
they tried to move the containers but the
containers began to leak and soaked into
the floors so the painters had to
continuously ventilate the whole area
during their entry.’’) The property
owners would not have a separate duty
to relay that information to the
controlling contractor. In another
example, the owner of a commercial
property hires a professional property
management company to manage a
property. The property owner turns over
all relevant information to the
management company. The
management company contracts with a
general contractor to oversee
renovations in a furnace room and
boilers on the property, and the general
contractor hires a subcontractor to
perform the construction work inside
the boilers, which are activated through
an electrical system. Under this
standard, the management company has
a duty to notify the controlling
contractor that the boiler tanks are
connected to the electrical system, the
way in which that electrical hazard is
normally addressed (e.g., isolating the
electrical hazards by disconnecting, and
locking out, the power source).
Hot work means operations capable of
providing a source of ignition, such as
riveting, welding, cutting, burning, and
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heating. In § 1910.146(b), OSHA defined
‘‘hot work permit’’ to describe the same
activity, but focused on the permit
rather than the work. OSHA did not
include the word ‘‘permit’’ in the
definition in this final rule because the
final regulatory text uses only the term
‘‘hot work,’’ and does not use the term
‘‘hot work permit.’’
Immediately dangerous to life or
health (IDLH) means any condition that
could cause a threat to life, cause
irreversible health effects, or otherwise
inhibit an employee’s ability to escape
from a permit space. The proposed
definition of ‘‘IDLH’’ also included
separately any condition that exposes an
employee to ‘‘serious physical harm,’’
which some commenters opposed. (ID–
0013, p. 2; ID–219.2, p. 74; ID–0147, p.
3.) In particular, one commenter noted
that the definition of ‘‘IDLH’’ in
§ 1910.146(b) does not include every
condition that could cause ‘‘serious
physical harm,’’ and asserted that the
use of this term makes it less clear that
an IDLH condition is one associated
with urgent danger. (ID–0013, p. 2) For
example, the commenter asserted that,
under the proposed definition, an IDLH
condition would be present when an
employee breaks his/her nose.
Another commenter asserted that
‘‘irreversible adverse health effects’’
should not be an element of the IDLH
definition unless OSHA adds language
tying those effects to an impairment of
the ability for self-rescue (ID–0219.2, p.
74.). OSHA notes that the revised
definition of IDLH is applied in this
standard through the definition of
hazardous atmosphere, and excludes
‘‘an atmospheric concentration of any
substance that is not capable of causing
death, incapacitation, impairment of
ability to self-rescue, injury, or acute
illness’’ (see Note to the definition of
‘‘hazardous atmosphere’’). Thus, the
standard follows the general industry
standard and is as appropriately focused
on conditions that would impair the
ability to self-rescue as is the definition
in the general industry standard. In a
comment submitted after the hearing for
this rulemaking, the same commenter
did not object to the inclusion of
‘‘irreversible adverse health effects’’ in
the general industry standard, asserting
that the general industry standard ‘‘does
not regulate non-acute hazards’’ (ID–
219.2, p. and 71.) However, OSHA finds
no evidence in the record, even after 20
years of experience with the general
industry standard, that this ‘‘irreversible
adverse health effects’’ component of
the IDLH definition would be less
appropriate for the construction
industry. OSHA has thus modified the
definition of IDLH to focus on
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conditions which would impair an
entrant’s ability to self-rescue and either
pose a threat to life or have the capacity
to cause irreversible adverse health
effects, and notes that all other OSHA
standards regarding exposure to
hazardous substances continue to apply.
Inerting means displacing the
atmosphere in a permit space by adding
a noncombustible gas (such as nitrogen)
to such an extent that the resulting
atmosphere is noncombustible. The
definition is identical to the general
industry definition, except for a minor
grammatical change. OSHA also
included a note from the general
industry standard to remind employers
that the inerting process results in an
atmosphere that is oxygen deficient;
oxygen deficiency is a separate
atmospheric hazard identified in the
third subparagraph of ‘‘hazardous
atmosphere.’’ Accordingly, the final rule
prohibits employees from working in
that space without a permit program
which includes use of necessary PPE.
Isolate or Isolation means the
process—such as misaligning or
removing sections of lines, pipes or
ducts; a double block and bleed system;
lockout or tagout of all sources of
energy; or blocking or disconnecting all
mechanical linkages—that an employer
uses to completely protect entrants from
the release of energy or other hazard
into a confined space. This definition is
based on the definition in § 1910.146(b)
and the proposed rule, but OSHA made
two minor adjustments to the definition
in this final rule and added a
clarification regarding isolation of a
portion of a contiguous space such as a
sewer system. First, OSHA clarified that
the purpose of isolation is to protect
employees, rather than the space itself,
from the release of hazards into the
space. In most cases this involves
isolating the entire space from a hazard,
such as isolating a room from a potential
source of flooding. However, in some
cases employers may be able to isolate
a hazard inside a confined space, and
the final rule’s emphasis on protecting
employees, rather than the space, allows
for that type of isolation. To that end,
the second difference from the general
industry definition is that in the final
rule OSHA defines ‘‘isolate’’ to include
employers’ use of physical barriers to
eliminate the opportunity for contact
between an employee and a physical
hazard inside a confined space, as
requested by a commenter (ID–061, p.
6). This addresses commenter concerns
that a single physical hazard such as
low-hanging pipe or a sharp object
would unnecessarily foreclose
alternative entries under § 1926.1203(e)
(discussed below) and require an
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employer to treat the entire space as a
permit space even after the employer
has taken steps to ensure that employees
could not come in contact with the
physical hazard. OSHA has reached a
similar result in most circumstances by
interpreting the general industry
standard to allow employers to
‘‘eliminate’’ hazards in a similar manner
without necessarily deeming it
isolation. See, e.g., October 27, 1995,
letter to William Taylor (temporary floor
could be used to eliminate fall hazard
from inwardly converging walls). But in
the construction context the addition to
the definition of isolation addresses the
issue directly and provides more
flexibility for employers to address
physical hazards for the purpose of
alternative entries under § 1926.1203(e)
(see the discussion of § 1926.1203(e) for
additional explanation on the difference
between the general industry standard
and this final rule regarding alternative
procedures for addressing permit spaces
with hazardous atmospheres and
physical hazards).
A different commenter suggested that
using the term ‘‘isolation’’ to refer to the
elimination of a physical or atmospheric
hazard will be confusing since industry
generally uses the term ‘‘isolation’’ to
refer to the control of a hazard and not
to the elimination of the hazard (ID–
098.1). OSHA agrees that the terms are
not interchangeable, and has tailored
the definition of isolation accordingly.
While eliminating a hazard or removing
it altogether from a confined space
would constitute means of isolating a
hazard, isolating the hazard in the
context of this rule does not necessarily
eliminate it from the space altogether in
the sense that the physical item may
remain in the space and that it might
still pose a hazard absent the isolation
measures. For example, if exposed rebar
is sticking out of a wall in a confined
space, the employer may eliminate the
hazard by pounding the rebar into the
wall so that it does not protrude in any
way; it may remove the hazard by
cutting out the rebar and carrying it out
of the space; or it may isolate the rebar
by erecting a barrier in a manner that
effectively prevents the possibility of
anyone coming into contact with the
rebar.
Both of the definitions in the general
industry rule and this final rule permit
‘‘tagout’’ in addition to ‘‘lockout’’ as a
means of isolating a hazard, but in both
cases the tagout process involves more
than the placement of a tag on
equipment because tagging equipment
does not prevent the release of a hazard
into the space. As discussed below,
OSHA has added definitions of
‘‘lockout’’ and ‘‘tagout’’ to ensure that
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the regulatory text of this final rule
reflects these critical elements of the
general industry standard.
Several commenters asserted that the
definition of ‘‘isolation’’ should not
include misaligning or removing
sections of lines, pipes, or ducts, but did
not provide a reason for this assertion
(ID–025, p.2; –027, p. 4; –095, p. 2). The
general industry confined spaces
standard at § 1910.146(b) includes
misaligning or removing sections of
lines, pipes, or ducts in its definition of
‘‘isolation.’’ Without a clear reason to
depart from this established
understanding of the term ‘‘isolation,’’
OSHA continues to include the
misalignment or removal of sections of
lines, pipes, or ducts as a form of
‘‘isolation’’ to match the definition of
the term in § 1910.146(b). To the extent
that the commenters were concerned
that removing a section of pipe within
a space would not isolate employees
from a hazard entering the space, such
an action would not meet the definition
of ‘‘isolation’’ if it does not effectively
and completely prevent employee
exposure to the hazard. The removal of
a section of a water pipe that would
effectively divert water away from a
confined space could be a form of
isolating the employees in that space
from the water hazard; disconnecting a
sewer pipe in a location where fumes or
physical hazards could still enter a
confined space and affect employers
(such as disconnecting the pipe at a
location inside the confined space or
immediately adjacent to the space
where the remainder of the pipe
entering the confined space is not
sealed) does not meet the definition of
‘‘isolation.’’
Another commenter asserted that
defining ‘‘isolation’’ differently from
‘‘control’’ could cause confusion (ID–
025, p. 2). This comment highlights the
need to have a separate definition:
‘‘Isolate or isolation’’ is distinct from
‘‘control’’ in this final rule because the
former term requires the elimination or
removal of the hazard. Control, on the
other hand, merely entails a reduction
in the degree of a hazard or a reduction
in the risk that the hazard will cause an
injury or death. For example, an
employer can control an atmosphere
through ventilation, but it cannot use
ventilation to isolate a space from a
hazard.
Limited or restricted means for entry
or exit means a condition that may
obstruct an employee’s ability to exit or
enter a confined space, including trip
hazards, poor illumination, slippery
floors, inclining surfaces and ladders
(see the earlier discussion of the
definition of ‘‘confined space’’ for a
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discussion of ladders). The proposed
construction rule, but not the general
industry standard, defined this term.
The proposed definition referred to
‘‘hazards’’ rather than ‘‘trip hazards.’’
OSHA did not include in this final
standard the reference to all ‘‘hazards’’
because the Agency believes that term
was potentially too broad, and that its
inclusion in this final standard would
render all the other examples
redundant. Instead, the final definition
refers to ‘‘trip hazards,’’ which is a
condition that is similar to the other
examples, and provides a greater degree
of guidance than the term ‘‘hazards.’’
One commenter objected to the
inclusion of ‘‘poor illumination and
slippery floors’’ in the definition,
arguing that the regulated community
does not generally understand these
conditions as ‘‘limited or restricted
means for entry and exit’’ as used in the
general industry confined spaces
standard at § 1910.146(b) (ID–153, p.
14). The commenter did not explain
why poor illumination and slippery
floors would not limit or restrict means
for entry or exit. The same commenter
acknowledged that § 1910.146 does not
define this term, but nevertheless
accused OSHA of ‘‘changing the
meaning of the term.’’ OSHA disagrees,
and is retaining the list of examples in
the final rule. The Agency previously
explained in its compliance directive on
general industry confined spaces, OSHA
Directive CPL 02–00–100: Application
of the Permit-Required Confined Spaces
(PRCS) Standards, 29 CFR 1910.146
(May 5, 1995), that a ‘‘space has limited
or restricted means of entry or exit if an
entrant’s ability to escape in an
emergency would be hindered.’’
Therefore, OSHA concludes that the
meaning of ‘‘limited or restricted means
for entry and exit’’ as used in the
general industry standard already
encompasses these conditions, and that
the Agency is simply providing the
same guidance more explicitly in this
final standard.
Line breaking refers to the process of
opening a pipe or duct when the
substance inside could injure an
employee because of the characteristics
of the substance or the manner in which
it is released from the conductor. This
definition is identical to the
corresponding definition in the general
industry standard. Although the term is
not otherwise used in the text of this
final standard (or in the text of the
general industry standard), OSHA
included it for parallelism with the
general industry standard and to inform
construction employers of the hazards
that may be associated with opening an
existing pipe or duct.
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Lockout refers to a means of isolating
a physical hazard (typically an electricpowered device) by placing a lockout
device on an energy isolating device in
accordance with established procedures
to ensure that the equipment which
poses a hazard and the energy isolating
device cannot be operated or
inadvertently energized until the
lockout device is removed. This
definition is identical to the definition
in the general industry standard (see
§ 1910.147(b)). OSHA has included it to
maintain consistency with the general
industry approach to lockout in
confined spaces. As discussed in the
explanation for ‘‘Isolate or isolation’’,
above, lockout is one method of
isolating a physical hazard in a confined
space.
Lower flammable limit (LFL) or lower
explosive limit (LEL) means the
minimum concentration of a substance
in air needed for an ignition source to
cause a flame or explosion. The
measurement is usually expressed in
terms of percentage by volume of gas or
vapor in air. When more than one type
of flammable substance is present in the
air, the LFL is derived from the
combined sum of all flammable
substances as a percentage of the total
atmosphere. The definition is identical
to the proposed definition and is
consistent with the use of the term in
the general industry standard. The
Agency did not receive any comments
on this definition.
Monitor or monitoring means the
process used to identify and evaluate
the hazards after an authorized entrant
enters the space. This is a process of
checking for changes that the employer
must perform in a periodic or
continuous manner after the completion
of the initial testing or evaluation of that
space.10 The proposed rule included a
definition this term. OSHA included the
definition in this final rule, but revised
it slightly to make it clear that
monitoring does not apply solely to
atmospheric hazards.
Non-entry rescue means a rescue,
usually by the attendant, that retrieves
employees in a permit space without the
rescuer entering the permit space. While
the general industry standard does not
include a definition of this term, the
proposed rule did include such a
definition. OSHA included the
definition in this final rule, but clarified
the distinction between entry rescue, as
defined above, and rescue that does not
involve entering the permit space.
Non-permit confined space means a
confined space that meets the definition
10 OSHA uses ‘‘periodic testing’’ and ‘‘periodic
monitoring’’ interchangeably in this standard.
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of a confined space, but does not meet
the requirements for a permit-required
confined space, as defined in this
subpart. This term, as defined in the
general industry standard at
§ 1910.146(b), requires a separate
analysis of hazards or potential hazards.
OSHA revised the general industry
definition in the final rule to make it
clear that a non-permit confined space
is simply the inverse of a permitrequired space: It meets all of the
requirements to be a confined space, but
does not meet the criteria to be a permitrequired confined space (see the
discussion of the definition of ‘‘permitrequired confined space’’ below in this
preamble). A confined space in which
all physical hazards are isolated or
eliminated and in which there are no
actual or potential hazardous
atmospheres is a non-permit confined
space.
Oxygen deficient atmosphere means
an atmosphere containing less than 19.5
percent oxygen by volume. This final
standard defines the term exactly as it
is in § 1910.146(b).
Oxygen enriched atmosphere means
an atmosphere containing more than
23.5 percent oxygen by volume. The
final standard also defines this term
exactly as it is in § 1910.146(b).
OSHA based the general industry
definitions for ‘‘oxygen deficient
atmosphere’’ and ‘‘oxygen enriched
atmosphere’’ on levels set by the
National Institute for Safety and Health
(NIOSH) (see 58 FR 4474 and 4476). The
proposed rule did not include separate
definitions of these terms, but did
incorporate the same levels into the
definition of ‘‘hazardous atmosphere.’’
As discussed in the explanation above
of ‘‘hazardous atmosphere,’’ OSHA does
not agree with several commenters’
suggestions for an alternative oxygen
level. OSHA did not receive any other
comments disputing that the
construction industry generally accepts
these definitions of the terms.
Permit-required confined space
(permit space) means a confined space
that has at least one of the following
characteristics: (1) Contains or has the
potential to contain a hazardous
atmosphere; (2) contains an engulfment
hazard; (3) is configured so that it poses
a risk of entrapment or asphyxiation; or
(4) any other recognized serious
hazards. OSHA revised this definition
in final rule § 1926.1202 to make it
identical to the definition in the general
industry confined spaces standard at
§ 1910.146(b). Consequently, the final
rule diverges from the proposed rule in
that OSHA revised the order of the
characteristics from the proposed rule,
clarified that a potential hazardous
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atmosphere can trigger a permit space,
and separated the third and fourth
characteristics from the proposed
definition (‘‘an engulfment hazard or
other physical hazard’’) so that
engulfment hazards addressed in the
second characteristic in the final
definition while some physical hazards
are encompassed by ‘‘other recognized
serious safety or health hazard’’ in the
fourth characteristic; there was not a
fourth characteristic in the proposed
definition. Otherwise, this definition is
the same as the definition in the
proposed rule.
Several commenters noted that the
proposed definition of ‘‘permit-required
confined space’’ included any ‘‘physical
hazard,’’ and asserted that the definition
of ‘‘permit space’’ would, therefore,
include non-serious hazards in a
confined space (ID–013, p. 3; –147, pp.
2–4). In the proposed rule, OSHA
addressed this concern in the definition
of ‘‘physical hazard,’’ which limited the
definition to hazards that were capable
of causing ‘‘death or serious physical
harm.’’ In this final rule, OSHA defined
the term to match the definition in
§ 1910.146(b), which specifies that the
phrase ‘‘contains any other recognized
serious safety or health hazard’’ applies
only to serious hazards, and the
definition of serious physical harm
(now ‘‘serious physical damage’’ in the
final rule) excludes injuries that could
not impair the ability of an entrant to
escape the space without assistance. As
noted in the explanation of the
definition of hazardous atmosphere, this
standard is focused on hazards that
could impair the ability of an entrant to
self-rescue.
The proposed definition of permitrequired confined space referred to a
‘‘hazardous atmosphere,’’ which OSHA
defined to include an existing or
‘‘potential’’ atmosphere. One
commenter urged OSHA to clarify that
a ‘‘potential hazardous atmosphere’’ is a
hazardous atmosphere that an employer
could anticipate, as opposed to a
hazardous atmosphere that is ‘‘remotely
possible under unforeseen conditions,’’
such as a train carrying chlorine
crashing and causing a toxic cloud of
chlorine that engulfs an entire worksite.
(ID–0138, p. 4.) The phrase ‘‘potential to
contain a hazardous atmosphere’’ in the
context of this final rule refers to the
existing conditions affecting the
confined space at the time of entry and
any changes to those conditions over the
duration of the entry, and limits hazards
to those hazards that a qualified person
should anticipate would affect that
space. If an employer becomes aware (or
should be aware) of the release of a toxic
gas that could enter the confined space,
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or detects such a gas near a ventilation
source for that space, then the space
would have the potential to contain a
hazardous atmosphere when the PEL or
LEL are below the ‘‘hazardous
atmosphere’’ levels. The potential for a
hazardous atmosphere remains until the
employer confirms that the space is
completely free of the toxic gas or the
gas level rises to a hazardous level.
As OSHA stated in a December 2,
2005, letter to Ms. Laura Johnson, a
potential hazard exists if the employer
does not entirely remove the source of
the hazard. For example, a space will
have the potential to contain a
flammable atmosphere if any piping,
containers, materials brought into the
space, or residual contamination of the
space brings combustible dust or
flammable gas, vapor, or mist into the
space. Employers can refer to a
substance’s Safety Data Sheet (SDS) as
one indicator of the hazards the
employer should reasonably anticipate
as a result of using a particular
substance. Testing and monitoring are
some other methods of identifying
potentially flammable atmospheres.
OSHA also previously clarified that an
appropriate lockout procedure that
blocks a potentially hazardous
atmosphere does not eliminate the
potential for a hazardous atmosphere, so
the space cannot be classified as a nonpermit-required space. See August 28,
1995 letter to William K. Principe.
Under this final rule, however,
employers who can effectively isolate a
potential hazardous atmosphere by
using one of the other techniques
described in the definition of the term
‘‘isolation’’ in § 1926.1202 (excluding
lockout/tagout) may be able to reclassify the space.
Permit-required confined space
program (permit space program) means
the employer’s overall program for
regulating employee entry into permit
spaces and protecting employees from
permit space hazards. This definition of
this term in the final standard
duplicates the term’s definition in
§ 1910.146(b). An employer need not
tailor a confined space program
specifically to each space entered. If the
permit contains most of the relevant
information required by this final rule,
the program may be general and
designate the particular permit that the
employer developed earlier for such
work, along with any other testing
procedures, PPE, or other information
normally required in response to the
types of hazard present in the space.
Accordingly, the employer is still
responsible for developing the
appropriate plans and other information
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required by this standard to address the
unique conditions of each space.
In the general industry standard,
OSHA uses the term ‘‘permit system’’ as
the heading for § 1910.146(e), and
defines it in § 1910.146(b). In the final
rule, OSHA uses the term ‘‘permitting
process’’ as the heading of the parallel
requirement at § 1926.1205, but does not
employ the term anywhere else in the
text of the final rule. OSHA, therefore,
chooses not to provide a separate
definition of ‘‘permitting system’’ in
§ 1926.1205 because such a definition is
unnecessary; the ‘‘permitting system’’ is
comprised of the requirements of
§ 1926.1205.
Physical hazard means an existing or
potential hazard that can cause death or
serious physical damage. Examples
include: Explosives (see paragraph (n) of
§ 1926.914 for the definition of
‘‘explosive’’); mechanical, electrical,
hydraulic, and pneumatic energy;
radiation; temperature extremes;
engulfment; noise; and inwardly
converging surfaces. The term ‘‘physical
hazard’’ also includes chemicals that
can cause death or serious physical
damage through skin or eye contact
(rather than through inhalation). The
general industry confined space
standard does not define the term
‘‘physical hazard.’’ OSHA uses the term
‘‘physical hazard’’ throughout this final
rule, however, and defined this term in
the proposed rule to clarify its meaning.
The proposed definition of ‘‘physical
hazard’’ referred to a hazard that can
cause harm ‘‘in or near a confined
space,’’ or a hazard that might ‘‘occur’’
in or near the confined space. OSHA
deleted the language tying the location
of where the harm could occur to the
meaning of ‘‘physical hazard’’ because a
condition establishing a physical hazard
can exist wherever it is regardless of
proximity to a confined space (e.g.,
exploding dynamite is a physical hazard
whether or not it is in or near a confined
space, and an engulfment hazard may
originate in a sewer far upstream from
where employees are located). OSHA
provides appropriate guidance in the
implementing requirements of the final
standard to ensure that the standard
focuses on physical hazards related to
confined spaces. See discussion of final
§§ 1926.1203 and 1926.1204 in this
preamble.
The proposed definition of ‘‘physical
hazard’’ also referred to a hazard that
has a ‘‘reasonable probability’’ of
occurring, and referred to the same list
of examples now incorporated into the
text of the final rule. OSHA has replaced
that phrase with ‘‘potential hazard’’ to
keep the terminology consistent with
the general industry standard. Both
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§ 1910.146 and this final rule use the
term ‘‘potential hazard’’ throughout the
standard, so OSHA is using the term
with which the industry is already
familiar.
One commenter noted that, in the
proposed rule, OSHA defined ‘‘physical
hazard’’ to encompass not only hazards
that could cause death or serious
physical harm, but also ‘‘a hazard that
has a reasonable probability of occurring
in or near a confined space’’ (ID–219.2,
p. 75). The latter part of the definition
did not require the hazard to result in
death or serious physical harm, so the
commenter objected on the grounds that
the definition of ‘‘hazard’’ would be
unnecessarily broad because it would
cover minor hazards (i.e., ‘‘a stubbed
pinky finger or toe’’) that would, in turn,
trigger the permit restriction in the
proposed standard (id). This final
definition does not encompass stubbed
fingers or toes or other minor injuries;
therefore, the Agency did not include
the extra component of the proposed
definition in the final rule. The
definition duplicates the general
industry standard in this regard, and it
also limits coverage to hazards that can
cause death or ‘‘serious physical
damage,’’ which OSHA has defined to
clarify the differences between ‘‘serious
physical damage’’ in this standard and
‘‘serious physical harm’’ as it is used in
other OSHA standards. For additional
information, see the explanation for the
definition of ‘‘serious physical damage’’
below in this preamble.
Another commenter asserted that the
definition of ‘‘physical hazard’’ should
not encompass equipment or material
inside a confined space that could cause
an ‘‘impact hazard’’ (e.g., ‘‘a low
hanging pipe or angle iron strut’’)
simply because it is present inside a
confined space and could injure an
employee who comes into contact with
it (ID–061, p. 7). The commenter
expressed concern that if OSHA
included these types of equipment or
materials, the alternate procedures set
forth in § 1926.1203(e) of the final rule
would almost never be available
because such spaces must be free of
physical hazards. In response, OSHA
modified the definition of ‘‘isolation’’
and the ventilation alternative
procedure in § 1926.1203(e) to make it
clear that this alternative procedure
remains an option for employers if the
employer protects entrants sufficiently
from the impact hazards by eliminating
them or isolating them through the use
of engineering controls. For example, if
a low-hanging pipe does not obstruct
the entrance or egress of the space and
is adequately padded to prevent
potential employee exposure to the
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hazard, or there is enough room in the
confined space to barricade the
hazardous condition and prevent
employee exposure to the hazard posed
by the pipe, OSHA would consider the
physical hazard isolated within the
meaning of that term in this final
standard. If there are no other physical
hazards in the space, and the employer
can demonstrate that it satisfied the
other conditions of § 1926.1203(e), then
the employer may use the ventilation
alternative procedure in that space.
If, however, there is a piece of
equipment or other physical object
inside a confined space that could cause
serious physical damage to an employee
upon impact, and the employer does not
eliminate or isolate that hazard, then the
employer must follow all of the PRCS
procedures set forth in § 1926.1204. The
commenter did not provide any
evidence of why an ‘‘impact hazard’’ is
different than any other type of physical
hazard, nor did the commenter indicate
any inherent restrictions on physical
movement that would necessarily limit
the force of the impact to a level not
capable of causing serious physical
damage. In the absence of such
evidence, OSHA believes that an object
such as a low hanging pipe or angle-iron
strut has the same potential to impair
the ability of an entrant to exit the
confined space unaided as other
physical hazards. For example, an
entrant could walk into a low-hanging
pipe and receive a head injury that
could render the entrant unconscious,
or the entrant could receive some other
form of serious injury to another part of
the body that could render the entrant
immobile.
Two commenters suggested that the
examples in the definition should
include both fire and crush hazards (ID–
025, p. 2; –095, p. 2). Another
commenter suggested that the final rule
definition should include falls as an
example (ID–211, Tr. p. 42.) OSHA
agrees that each of these is an example
of a physical hazard, but notes that the
list of examples provided in the
definition is not an exhaustive list.
Therefore, OSHA concludes that it is
not necessary to add to this nonexhaustive list.
The Agency included ‘‘noise’’ in the
proposed definition of ‘‘physical
hazard’’ as one example of such a
hazard because sound waves constitute
a physical disturbance of the air that
results in a physical impact on the
human ear. Several commenters
asserted that excessive noise should not
trigger the application of PRCS
procedures when no other hazard exists
(ID–112, p. 17; –114, p. 2; –138, p. 4).
These commenters indicated that the
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final standard should not treat noise as
a physical hazard if the noise did not
rise to the level of impairing the ability
of an entrant to exit the space without
aid; however, these commenters did not
assert, or provide any evidence
supporting the view, that noise alone is
incapable of such impairment or
otherwise causing serious physical
damage, as OSHA defines it in this final
rule. Therefore, OSHA is retaining the
term ‘‘noise’’ as an example of a
physical hazard in this final definition.
One of the commenters questioned
whether noise levels exceeding the
decibel levels specified in § 1926.52,
OSHA’s construction noise standard,
would trigger the permit-space
requirements. The final construction
confined spaces standard does not
specify this threshold, and OSHA notes
that noise will only trigger PRCS
procedures if it reaches a level at which
it can cause death or serious physical
damage. For example, noise would
constitute a physical hazard if it is loud
enough to substantially reduce the
efficiency of the entrant’s ears to process
communications from the attendant or
entry supervisor regarding exit
instructions or other emergency
information, thereby impairing the
ability of the employee in the permit
space to exit the space safely (see the
definition of ‘‘serious physical damage,’’
which includes ‘‘an impairment . . . in
which a body part is made functionally
useless or is substantially reduced in
efficiency’’ and specifically mentions
disorientation). OSHA has previously
recognized the capacity of noise to
create a hazardous situation by masking
warning shouts or signals (see, e.g.,
OSHA’s preamble to § 1910.95, the
general industry noise exposure
standard, at 46 FR 4080 (Jan. 16, 1981).
Employers generally can address these
types of noise hazards by implementing
a permit program that uses non-auditory
cues, such as flashing lights, to resolve
communication issues.
In some cases, the sound waves from
an explosion or other air disturbance
may be so intense that it might cause
physical pain or disorient an entrant to
the extent that it could impair the
ability of the entrant to exit the space
unaided. See, e.g., Stephen A. Fausti,
Ph.D., et al., Auditory and vestibular
dysfunction associated with blastrelated traumatic brain injury, Journal
of Rehabilitation Research and
Development, Vol. 46, No. 6 (2009) pp.
797–810 (discussing the impacts of
excessive noise exposure, such as the
noise caused by a blast or explosion,
including immediate temporary hearing
loss and sensory damage).
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Two of these commenters asserted
that the use of personal protective
equipment can protect employees
effectively from noise hazards, but
expressed concern that OSHA would
prohibit employers from working in a
confined space with excessive noise
because the definition of ‘‘control’’
provides explicitly that ‘‘personal
protective equipment is not a control’’
(ID–114, p. 2.) As another commenter
noted, OSHA would treat earplugs as
protection from a hazard, but not
control of the hazard, and, therefore,
would prohibit work in an area with an
uncontrolled noise hazard (ID–112, p.
17).
The final rule will not prevent work
in a noisy confined space if employees
are properly protected. In the final rule,
OSHA requires employers to protect
their employees adequately from
confined-space hazards; in protecting
employees, other construction standards
also would apply. Therefore, if the noise
is above the decibel levels specified in
29 CFR 1926.52, employers must protect
their employers in accordance with that
section, regardless of whether the noise
conditions trigger the permit-space
requirements of this final standard.
OSHA’s Field Operations Manual
provides that employers may ‘‘rely on
personal protective equipment and a
hearing conservation program, rather
than engineering and/or administrative
controls, when hearing protectors will
effectively attenuate the noise to which
employees are exposed to acceptable
levels.’’ (CPL 02–00–150 at Ch. 4, XI.B).
However, feasible administrative and/or
engineering controls must be used when
personal protective equipment may not
reliably reduce noise levels received to
the levels specified in the standard or
when those controls are less expensive
than an effective hearing conservation
program. Employers choosing to rely on
personal protective equipment instead
of administrative or engineering
controls must ensure that employees
will be aware of continuous monitoring
alarms and other hazard alerts in a
timely manner regardless of PPE use.
Therefore, to promote consistency with
OSHA’s treatment of noise hazards
under § 1926.52, OSHA permits
employers to use these same methods to
address the noise hazards in a permit
space so long as the administrative and
engineering controls, or the personal
protective equipment, do not interfere
with the ability of the entrant to
maintain effective communication with
the attendant and other workers.
Notwithstanding the general statement
in the definition of ‘‘control’’ that
personal protective equipment does not
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25391
constitute a control, OSHA is permitting
employers to use appropriate hearingprotection equipment as a means of
addressing a noise hazard in a permit
space when the PPE attenuates the noise
to acceptable levels. However, if the
employer is unable to reduce an
employee’s exposure to noise to a level
where it does not constitute a threat of
death or serious physical damage, then
the employer must not permit
employees to enter any portion of the
permit space that would expose the
employee to such a noise level.
Prohibited condition means any
condition in a permit space not allowed
by the permit during the period of
authorized entry. This portion of the
definition is identical to the definition
in § 1910.146(b), and is similar to the
definition of ‘‘unplanned condition’’ in
the proposal. In addition, the Agency
added a sentence to the definition in the
final standard to clarify that a hazardous
atmosphere is always a prohibited
condition, unless the employer can
demonstrate that use of appropriate PPE
will effectively protect entrants; this
added condition means that employees
cannot work in a hazardous atmosphere
without the appropriate PPE. The
definition of hazardous atmosphere in
the general industry standard implies
this condition, which the Agency made
explicit in this final rule for
construction.
Qualified person means one who
successfully demonstrates his/her
ability to solve or resolve problems
relating to the subject matter, the work,
or the project. While the general
industry does not include this term in
the definition of ‘‘entry supervisor,’’ the
proposed rule did, and OSHA retained
this term in the final standard. While
the proposal did not define ‘‘qualified
person,’’ the final rule’s definition is
similar to definitions of the term found
in § 1926.32(m) and other subparts of
OSHA’s construction safety standards
(see, e.g., § 1926.1401—Cranes and
derricks in construction). In this way
the final rule clarifies that an ‘‘entry
supervisor’’ clarifies that the employer
must ensure that the entry supervisor
has sufficient experience to properly
conduct identification, testing, and
planning for the type of confined space
involved.
Representative permit space means a
confined space, or mock-up of a
confined space, that has entrance
openings that are similar to, and is of
similar size, configuration, and
accessibility to, the permit space that
authorized entrants enter. OSHA
simplified this definition from the
definition included in the proposed
rule, but the simplification is a non-
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substantive change that clarifies the
criteria for a representative permit
space. OSHA changed the term from
‘‘simulated permit-required confined
space’’ to ‘‘representative permit space’’
because the Agency used the latter term
in the general industry confined spaces
standard at § 1910.146; however,
changing the terminology has no effect
on the meaning of the term and the
requirements relating to it. OSHA
changed this terminology to make this
final rule more consistent with
§ 1910.146, for the reasons set forth
above in the section, ‘‘Decision to
abandon the proposed new
classification system.’’
Rescue means retrieving, and
providing medical assistance to, one or
more employees who are in a permit
space. OSHA defined this term in the
proposed rule, and included the term in
the final rule unchanged except for
addition of the phrase ‘‘one or more’’ to
clarify that a rescue can involve the
retrieval of a single employee.
Rescue service means the personnel
designated to rescue employees from
permit spaces. This definition
duplicates the definition of the term in
the general industry standard at
§ 1910.146. In the proposed rule, OSHA
included specific statements that the
term applied to both onsite and offsite
personnel, and to personnel designated
by the employer for either non-entry or
entry rescue (or both). In the final
standard, OSHA elected to use the
broader language of the general industry
standard for consistency; however, the
Agency believes that there is no
substantive difference between the
proposed and final standards in the
meaning of these statements.
Retrieval system means the
equipment used for non-entry rescue of
persons from permit spaces. The
purpose of the retrieval system is to
provide a means of removing an entrant
from a space quickly without exposing
any additional employees to the hazards
of permit-space entry. This equipment
typically includes a retrieval line
attached around the chest of the entrant
or to a full-body harness worn by the
entrant, with the other end of the line
attached to a lifting device or anchor.
Alternatively, the retrieval system may
consist of a retrieval line attached to
wristlets or anklets when this method of
pulling the entrant from the confined
space would be safer than using a body
harness.
The definition of this term in the final
standard duplicates the definition found
in § 1910.146 except that it allows for
the use of anklets. In proposed
§ 1926.1213(a)(4), OSHA permitted the
use of ‘‘ankle straps’’ for retrieval in
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certain cases, and at least one
commenter supported this option in
limited circumstances such as some
horizontal entries (ID–94, p. 1) (see also
the discussion of the requirements
retrieval lines in § 1926.1211(c)(1)).
Serious physical damage refers to an
impairment or illness in which a body
part becomes functionally useless or
substantially reduced in efficiency.
One commenter noted that the
proposed definition (‘‘serious physical
harm’’ in the proposed rule) included
impairments that are ‘‘chronic,’’ in
addition to impairments that are
‘‘acute,’’ and asserted that this
definition is, therefore, too broad
because it would apply on exposing an
employee to a minor hazard that would
not interfere with the ability to selfrescue (ID–219.2, p. 76).
The term ‘‘serious physical harm’’ has
a longstanding meaning within the OSH
Act that developed over many years
through litigation and many
rulemakings. When developing the
definition used in the final rule, OSHA
used the Agency’s common
understanding of ‘‘serious physical
harm,’’ as provided in the Agency’s
Field Operations Manual (FOM), which
provides guidance to OSHA personnel
conducting inspections and other
activities in the field.11 The Agency
acknowledges that the FOM, compared
to the final rule, has a broader purpose
of providing guidance for the
enforcement of the OSH Act as a whole,
and that the inclusion of the phrase
‘‘acute or chronic’’ from the FOM in the
definition may not provide meaningful
guidance in the context of this final
rule. Therefore, OSHA changed the term
to ‘‘serious physical damage’’ to
distinguish it from the broader term
used in the FOM and other contexts,
and also did not include the phrase ‘‘or
acute or chronic’’ in this definition. By
doing so, OSHA addressed the
commenter’s concern that the reference
to ‘‘chronic’’ impairments would ‘‘cause
the standard to apply to conditions that
cannot pose a significant risk of harm
from the entry’’ and thereby ‘‘increase
the cost of the standard so drastically as
to render it infeasible for all
11 OSHA based the definition in the proposed rule
on the Field Inspection Reference Manual, chapter
III, section C.2.b(2)(c). See 72 FR 67358. OSHA
subsequently published the Field Operations
Manual and updated it in April, 2011, but the
definition of ‘‘serious physical harm’’ remains
unchanged from the previous version: ‘‘Impairment
of the body in which part of the body is made
functionally useless or is substantially reduced in
efficiency on or off the job. Such impairment may
be permanent or temporary, chronic or acute.
Injuries involving such impairment would usually
require treatment by a medical doctor or other
licensed health care professional.’’ See CPL 02–00–
150 II.C.3. at p. 4–11.
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construction industry sectors’’ (ID–
219.2, p. 72). In addition, OSHA
recognizes that a similar issue exists
with the reference to illness. The
proposed definition included ‘‘illnesses
that could shorten life or substantially
reduce physical or mental efficiency by
impairing a normal functioning body
part.’’ This language could be read as
including chronic illnesses that do not
limit the ability to self-rescue. For the
purposes of this standard only, OSHA
intends the reference to illness to
encompass only those illnesses that
could interfere with the entrant’s ability
to exit the confined space. Therefore,
the final rule deleted this language, and
inserted ‘‘illness’’ after ‘‘impairment’’ to
make clear that only illnesses that could
impede self-rescue are covered in the
meaning of serious physical damage.
Nevertheless, the Agency does not
believe that these distinctions make a
meaningful difference in employer
duties because the majority of hazards
in a confined space that could cause a
serious physical injury are also likely to
have the potential to impair the
entrant’s ability to exit the space
without aid. As OSHA stated in the
FOM in a note explaining the term
‘‘serious physical harm’’: ‘‘The key
determination is the likelihood that
death or serious harm will result IF an
accident or exposure occurs’’ (Emphasis
in the original).
Although one commenter belittled the
proposed definition of ‘‘serious physical
harm’’ as encompaasing a ‘‘stubbed
pinky finger or toe’’ criticized the
potentially broad scope of ‘‘serious
physical harm’’ by suggesting that it
would include ‘‘a stubbed pinky finger
or toe’’ (ID–219.2, p. 75), such an
argument improperly shifts the focus of
the standard away from the hazard
requiring protection and to the potential
outcome of employee exposure to that
hazard. If, for example, there is a
physical obstruction in a confined space
that is only capable of inflicting, as a
maximum injury, a stubbed toe or
finger, then OSHA agrees with the
commenter that such an obstruction
would not trigger any permit space
requirements under this final standard.
However, if it is reasonably foreseeable
that an obstruction could cause the
entrant to trip and either strike his/her
head and lose consciousness, or fall and
break his/her arm or leg thereby
impairing the entrant’s ability to exit the
space, then the presence of this hazard
would trigger the permit-space
requirements of this standard, and the
entry employer would need to address
the hazard to protect employees it
directs.
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Tagout, as used in this confined
spaces standard, is a two-step process
that follows the general industry
approach: First, a tagout device must be
placed on a circuit or equipment that
has been deenergized, in accordance
with an established procedure, to
indicate that circuit or equipment being
controlled may not be operated until the
tagout device is removed. Second, the
employer must ensure that the tagout
provides equivalent protection to
lockout, or that lockout is infeasible. If
lockout is infeasible, the employer must
tag the equipment and also provide
protection from stored (residual) energy.
This ensures that the final rule is more
closely aligned with the full protections
required for general industry work.
Both the general industry rule and
this final rule permit ‘‘tagout,’’ in
addition to ‘‘lockout,’’ as a means of
isolating some hazards. The Agency
added a definition of ‘‘tagout’’ to the
construction standard because OSHA
intends the tagout process under this
construction rule to parallel the process
under the general industry rule, which
requires compliance with § 1910.147—
The control of hazardous energy
(lockout/tagout) (see § 1910.146(b);
§ 1910.147(a)(3)(ii)).12 That tagout
process involves more than the
placement of a tag on equipment, and
the final rule’s definition of ‘‘tagout’’
ensures that the regulatory text of this
final rule reflects the critical additional
elements of the general industry
standard.
First, tagging equipment does not, by
itself, prevent the release of a hazard
into the space. Therefore, under
§ 1910.147(c)(2), an employer may use
tagout alone (i.e., not in conjunction
with lockout) only if an energy isolating
device is not capable of being locked out
or the employer can demonstrate that
the utilization of a tagout system will
provide full employee protection. The
standard specifies that ‘‘full employee
protection’’ means that the employer
shall demonstrate that the tagout
program will provide a level of safety
equivalent to that obtained by using a
lockout program (§ 1910.147(c)(3)).
Paragraph (2) of the final rule’s
definition of tagout requires employers
12 OSHA did not include a definition of ‘‘tagout’’
in the NPRM, though the preamble noted the
Agency’s intent that ‘‘appropriate lockout/tagout
procedures’’ were required for isolation of physical
hazards (72 FR 67386). As explained earlier in this
preamble, OSHA is tailoring the final rule to follow
the general industry rule more closely in response
to numerous requests by commenters. If OSHA had
allowed the use of tags without more, it would have
been a key distinction from the general industry
standard and would have allowed employers to
circumvent most of the permit-space requirements
involving physical hazards.
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to ensure the same level of safety if they
use tagout when lockout is feasible.
Second, the general industry standard
provides examples safety measures
employers may use as a part of the
tagout process to reduce the likelihood
of inadvertent energization: Removal of
an isolating circuit element, blocking of
a controlling switch, opening of an extra
disconnecting device, or the removal of
a valve handle (§ 1910.147(c)(3)(ii)).
Under the final rule, employers may
also use these methods, when
applicable to their work, as part of their
process for fulfilling their obligation to
ensure that tagout provides equivalent
protection to lockout. Finally, even
when tagout is used alone, the general
industry standard requires the employer
to relieve, disconnect, restrain and
otherwise render safe stored (residual)
energy (see § 1910.147(d)(5)).
This same requirement applies in this
final rule to the use of tagout alone.
Test or testing means the process by
which employers identify and evaluate
the hazards that may confront entrants
of a permit space. Testing includes
specifying the identification and
evaluation processes the employer will
perform in the permit space. This
definition is similar to the definition
found in § 1910.146, except that OSHA
added the word ‘‘test’’ to clarify that the
definition applies to both words. OSHA
is also including a note identical to the
note to this definition on the general
industry standard. The note emphasizes
the importance of testing as the basis for
developing and implementing adequate
control measures.
Ventilate or ventilation means
controlling a hazardous atmosphere
using continuous forced-air mechanical
systems that meet the requirements of
29 CFR 1926.57—Ventilation. This
definition is identical to the definition
of these terms in the proposed rule.
Some commenters asserted that the final
definition should allow for the use of
suction as a form of ventilation (ID–
061.1, p. 1; –210, Tr. p. 289). Although
the final rule does not prohibit the use
of suction, suction is not an adequate
means of providing the general
ventilation required by this final rule.
The general industry standard does not
include a definition of ‘‘ventilation,’’
but OSHA interpreted that standard as
precluding the use of ‘‘negative’’ suction
ventilation to meet the requirements of
the standard. See April 24, 1996, letter
to Verne Brown. Suction may be
appropriate to remove contaminants
from a specific operation close to the
source of the contaminant, but not for
general ventilation of the entire
confined space. OSHA is, therefore,
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25393
including the proposed definition of
‘‘ventilate’’ in the final rule.
Another commenter requested
clarification regarding how an employer
can use forced air to ‘‘ventilate’’ while
also complying with OSHA’s welding
requirements at § 1926.353(a) through
(e) (ID–061.1, p. 2). Section
1926.353(a)(3) requires local exhaust
ventilation (LEV) when general
mechanical ventilation does not provide
sufficient protection. In addition,
§ 1926.351(a)(1) authorizes the use of
general mechanical ventilation. The
overlap of the welding standard and this
confined spaces standard is addressed
earlier in the explanation of
§ 1926.1201(c). Both of these practices
are consistent with the requirement in
this final rule that employers use
ventilation that consists of continuous
forced-air. Accordingly, this confined
spaces standard requires that employers
use continuous forced-air ventilation to
ventilate confined spaces. When an
employee is welding inside a confined
space, § 1926.353(a)(3) may require the
employer to also implement LEV. In
conclusion, OSHA believes that LEV
alone is not sufficient for the purposes
of providing general ventilation of a
confined space because LEV might not
eliminate all of the toxic material from
the area, and any residual fumes would
be more likely to build up and create a
potential or actual hazardous
atmosphere in a confined space.
Section 1926.1203—General
Requirements
Final § 1926.1203 sets forth general
requirements for employers that have
operations within the scope of this
standard. This section establishes a
comprehensive regulatory framework
under which employers must identify
any permit spaces at their workplaces
and take appropriate measures for the
protection of affected employees. It is
similar to the general industry rule at
§ 1910.146(c). The corresponding
requirements in the proposed rule also
were similar to the requirements in this
final rule, but this final rule organizes
the requirements differently.
Paragraph (a). Final § 1926.1203(a) is
similar to the corresponding provision
for general industry confined spaces at
§ 1910.146(c)(1), with some minor
modifications. Final § 1926.1203(a)
requires an employer to have a
competent person evaluate the spaces in
which employees it directs may work,
and requires a two-step process for the
evaluation: (1) The competent person
must evaluate whether a space meets
the definition of a confined space, and
if so, (2) the competent person must
identify, in accordance with other
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provisions of this final rule, any
confined spaces that are PRCSs through
consideration and evaluation of the
space, including testing of the space as
necessary. The final construction rule
specifies both the two-step approach
and the competent-person requirement
more explicitly than in the general
industry standard.
OSHA added the competent-person
requirement in response to several
comments noting that the analysis
required for these evaluations
necessitated some level of expertise.
(See ID–025, p. 2; –028, p. 4; –095, p.
2; –097, p. 3; –140, p. 3; –150, p. 2.) A
‘‘competent person,’’ which § 1926.1202
defines under this standard, must be
capable of identifying the hazards of
permit spaces and have the authority to
eliminate them promptly. Because final
§ 1926.1203(a) requires the competent
person to conduct initial testing as
necessary, the competent person also
must be knowledgeable about
appropriate testing. The correct initial
identification of permit spaces is an
important part of preventing
unauthorized entry into those spaces
and ensuring that authorized entrants
have adequate protection.
As discussed in the explanation of the
definition of ‘‘entry employer,’’ each
employer has a responsibility to protect
all the employees that it directs,
including employees hired directly by
that employer as well as other
employees, such as temporary workers,
who are under its the control at the
worksite. Thus, each employer who
directs a temporary worker to a work
area must ensure that a competent
person evaluates that area for confined
spaces and permit spaces.
Final § 1926.1203(a) also differs from
the general industry rule in that it
explicitly specifies that the competent
person must identify confined and
permit spaces through consideration
and evaluation of other elements of the
confined space, and testing as
necessary. The atmospheric-testing
requirement in this final rule is less
specific than the atmospheric-testing
requirement in proposed § 1926.1204(b),
which would have required employers
to test for atmospheric hazards using the
procedures in proposed
§ 1926.1204(b)(3). However, final
§ 1926.1203(a) is more specific than the
corresponding provision in the general
industry rule, which states that
employers must ‘‘evaluate the
workplace’’ to determine if any spaces
are permit-required spaces.
Accordingly, this final provision
explicitly requires testing if necessary to
assess whether a confined space is a
permit-required confined space.
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The testing required by final
§ 1926.1203(a) is only initial testing;
final § 1926.1204(b) addresses the
detailed evaluation and identification of
hazards found within the space (see
discussion later in this preamble). The
primary purpose of the assessment
required by § 1926.1203(a) is to
determine whether the space is a permit
space so that this information can be
conveyed to employees, the controlling
contractor, and other employers at the
site in order to prohibit unauthorized
entry. In some cases employers may
discover that the space is a permit space
after only limited testing and decide not
to allow their employees to enter the
space at that point rather than fully
assessing the space. Employers who
intend to enter, however, may choose to
conduct more thorough testing that
satisfies the requirements of both
§ 1926.1203(a) and § 1926.1204(b) at the
same time, so long as it does not delay
their notification of their employees and
the controlling contractor of the
existence of the permit space.
Final § 1926.1203(a) also requires the
competent person to consider and
evaluate other elements of the confined
space to determine if it is a permitrequired confined space. Such elements
include the configuration of the space
and any physical hazards or obstacles to
egress from the space. Both the testing
and consideration of the space are
essential in making an initial
determination whether a confined space
is a permit-required space; the Agency
believes that requiring these basic steps
will ensure that employers correctly
identify PRCSs.
OSHA determined that employers
must identify confined spaces that meet
the definition of a permit space at the
time their work begins on a worksite
rather than when an employer decides
that employees will enter a confined
space. The Agency believes that the
initial workplace survey is essential
because it alerts employers to the need
to take measures to prevent
unauthorized entry into these spaces.
OSHA further notes that while it may
not always be feasible for employers to
create and follow a full permit program
before assessing an previously
unexplored confined space, when it is
feasible employers must treat any entry
into a confined space as if the space was
a permit space and eliminate or isolate
the hazards before entry (see
§ 1926.1203(d) and (g)(2);
§ 1926.1204(b)(2)). This applies to
entries performed to determine whether
or not that space is a permit space.
Final § 1926.1203(a) states that there
are two steps to be followed. The first
step in the evaluation process is to
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determine whether a space meets the
definition of a confined space. If the
employer determines that there is a
confined space on the worksite, the
second step requires the employer to
evaluate, in accordance with other
provisions of this final rule, whether
there are any actual or potential hazards
in the confined space. Actual or
potential hazards the employer must
consider include atmospheric,
engulfment, physical, or any other type
of hazard. Both stages of the initial
evaluation are crucial, as correctly
identifying both confined spaces and
the conditions or potential conditions
that would make a confined space a
permit-required confined space
determines how the employer and
employees will perform in and around
the space thereafter. Though the general
industry rule at § 1910.146(c)(1) does
not explicitly identify the two steps,
they are implicit in § 1910.146(c)(1)
because an employer cannot evaluate
the hazards of a confined space without
first evaluating whether there are
confined spaces on the worksite, as well
as the location of these confined spaces.
This clarification that an employer must
first consider whether there are
confined spaces at a worksite also was
in proposed § 1926.1204(b). The Agency
believes that making this requirement
explicit is necessary to ensure that
employers correctly assess the spaces so
that they can adequately protect
employees from the hazards present in
the confined spaces.
One commenter requested that OSHA
clarify which employer has the
responsibility to evaluate hazards in
confined spaces (ID–086, p. 4). Final
§ 1926.1203(a) clarifies the requirement
by specifying that each employer that
directs employees who may work in a
confined space must perform the
requisite evaluation. As in both the
general industry standard and the
proposed rule, this evaluation provision
applies to a group of employers larger
than just entry employers. The general
industry standard requires each
employer to evaluate the workspace and
determine if any confined spaces are
permit spaces (§ 1910.146(c)(1)). On a
construction worksite, there typically
are many more employers than at
general industry worksites. Therefore,
under final § 1926.1203(a), each
employer that directs employees who
may work in a confined space must
identify all such spaces, and also
identify each space that is a permit
space. The term ‘‘may work’’ means that
this requirement applies to any
employer (not just entry employers) at a
construction worksite who should
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reasonably anticipate employee
exposure to confined spaces; the focus
is on whether the employee might enter
the space, with the assumption that
entry would constitute ‘‘work.’’
Accordingly, these employers must
determine whether employees they
direct could foreseeably work in areas at
a worksite having confined spaces and
whether any of these confined spaces
are permit spaces.
Employers may cooperate in
identifying the confined spaces and
permit-required confined spaces on a
worksite, but each employer remains
responsible for identifying spaces that
could affect employees it directs,
including temporary workers. For
example, several different employers
could work with a single competent
person designated by one of them, or by
the controlling contractor, to identify
the confined and permit spaces on a
site, but each employer must still ensure
compliance with the requirements of
this standard.
The commenter who requested
clarification about evaluating hazards
also asked why the controlling
contractor or host employer did not
have the responsibility to evaluate the
confined spaces, and asserted that entry
employers did not have the information
necessary to classify a space (ID–086, p.
4). The final rule follows the general
industry standard, which assigns
employers the responsibility to evaluate
the spaces, and it is appropriate that the
employers who direct employees who
may be exposed to the hazards of permit
spaces are responsible for classifying the
space. Further, prior to entry into a
permit space, controlling contractors
and entry employers have duties under
final §§ 1926.1203(h) and (i) to exchange
information about the permit space.
Some commenters also suggested
requiring a competent person to perform
additional duties specified by this
standard, such as monitoring or
calibration of equipment (ID–025, p. 3;
–028, pp. 3–4; –150, p. 2). However,
final § 1926.1204(h) requires employers
to properly train employees who
perform these duties during entry
operations. This final standard also
includes training and knowledge
requirements for entry supervisors,
attendants, and other specific positions
set forth in this standard to ensure that
the employees filling those positions
have the knowledge and capabilities to
perform the specified duties once a
permit space is identified (see final
§§ 1926.1207–1210). The initial
evaluation of spaces under final
§ 1926.1203(a) includes a competentperson requirement because of the
critical need to identify confined and
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permit spaces early in the work at the
site, and because the requirement to
evaluate spaces also applies to
employers who are not entry employers
and who are, thus, not covered under
the permit-space requirements of this
final rule.
One commenter suggested that OSHA
add a note in the standard to inform the
regulated community that Material
Safety Data sheets (now called Safety
Data sheets) may be helpful in
evaluating confined space hazards (ID–
140, p. 4). OSHA agrees that this is
useful information, but observes that a
note under the definition of ‘‘hazardous
atmosphere’’ in final § 1926.1202
provides similar information and
achieves the commenter’s stated result.
The same commenter also expressed
concern that an employer, when
identifying confined space hazards,
does not have to consider the work it
plans on performing inside the confined
space, which may create a hazard (e.g.,
welding or painting) (ID–140, p. 5). The
commenter based this assertion on
proposed § 1926.1204(b)(1), which
provided that an employer must identify
confined space hazards without entering
the space and, thus, without first
performing the work that could
potentially create a hazard. OSHA
drafted final § 1926.1203(a) broadly, so
it is not as specific as proposed
§ 1926.1204(b)(1). An employer who is
planning to conduct entry operations
must develop and implement a written
permit-space program under final rule
§ 1926.1203(d). Furthermore, under
final § 1926.1205(c)(1), these employers
must specify acceptable entry
conditions. Taken together, these
provisions require an employer that will
conduct entry operations to consider the
work it is planning to perform and the
hazards that may result from this work
when conducting the initial evaluation
under final § 1926.1203(a).
One commenter asserted that the
proposed prohibition on the use of
mechanical ventilation or changing the
space’s natural ventilation during
atmospheric testing would make some
confined space work dangerous (ID–077,
p. 1). This commenter asserted that
when an employer is performing
abrasive blasting on a tank interior, it is
unsafe to perform the abrasive blasting
with the dust collector turned off just to
get a baseline reading. This commenter
misunderstands the purpose of this
requirement. Under final § 1926.1203(a),
an employer’s evaluation is the first step
for any confined space work. This
evaluation must occur before the
employer performs either ventilation or
construction in the confined space (see
§ 1203(a) and § 1204(e)(1) (allows an
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25395
exception for spaces where it is
infeasible to isolate the space). Only
after the employer completes this initial
evaluation, and the other required steps
of its permit-space program, may it
perform the construction work
permitted under the rest of this final
rule (e.g., abrasive blasting with the dust
collector turned on); however, the
employer must consider this work and
the types of hazards it might create
when conducting the initial evaluation
and when developing its permit-space
program.
Paragraph (b). Final § 1926.1203(b)
requires an employer that identifies one
or more permit spaces on a worksite to
inform exposed employees, employees’
authorized representatives, and
controlling contractors of the existence
and location of those permit spaces and
the known dangers inside. This duty
applies to the employer that identifies a
permit space under final § 1926.1203(a),
as opposed to the general industry
language, which refers to ‘‘the
employer.’’ One of the keys to protecting
employees from PRCS hazards is for
both employers and employees to know
the location of the PRCSs at the job site,
the characteristics of the hazards, and
their associated dangers. The provisions
in this paragraph will achieve this goal.
The introductory language in
paragraph (b) follows the general
industry standard except that the new
rule specifies that the employer’s duty
is triggered when the workplace has
‘‘one or more’’ permit spaces, whereas
the general industry standard just refers
to ‘‘spaces’’ in the plural. A single
permit space triggers the employer’s
duty under both the general industry
standard and this final rule, and OSHA
is making this point explicit in the new
rule.
Paragraph (b)(1). Final
§ 1926.1203(b)(1) requires the employer
to inform exposed employees of the
existence and location of, and the
danger posed by, the permit spaces by
posting danger signs or by any other
equally effective means. Final
§ 1926.1203(b)(1) is similar to both the
general industry rule at § 1910.146(c)(2)
and proposed § 1926.1209(a)(2). As
OSHA noted in the preamble to the
general industry standard, many
confined space accidents occur when an
employee fails to recognize the hazards
present when entering a permit-required
confined space that the employer failed
to mark as such. (58 FR 4462, 4483 (Dec.
17, 1993)). Therefore, OSHA determined
that it is important to identify permit
spaces and to inform exposed
employees of their presence and the
hazards involved. The Agency believes
that employees need this information to
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understand the seriousness of potential
hazards in PRCSs. To recognize all
methods of informing employees and to
clarify the purpose of the rule, OSHA is
adopting a performance-oriented
requirement in the final rule.
Accordingly, the employer must post a
danger sign at or near PRCS entrances,
which the Agency believes is an
effective way to ensure that employees
receive proper warning of the hazards in
a PRCS, or adequately inform exposed
employees through another equally
effective means. Compliance with this
requirement will ensure that exposed
employees who are not authorized
entrants receive the information
necessary to prevent them from entering
the spaces. Whatever method the
employer uses, the standard requires the
employer to inform employees exposed
to the hazards posed by permit-required
confined spaces of the existence,
location, and danger of those spaces.
Everyone at the construction site
benefits from this information even if
they do not engage in construction
activity (e.g., designers or architects).
However, OSHA notes that only
employees who work in PRCSs need to
know the details about the potential
hazards. Final § 1926.1205(c) provides
that employers post the entry permit,
which contains information about the
hazards of the PRCS and the measures
used to address those hazards, at the
entry portal or make this information
available by any other equally effective
means at the time of entry. Final
§ 1926.1212 provides that employers
must make available to each affected
employee and his/her authorized
representatives all information required
by this standard. Therefore, final
§ 1926.1203(b) does not require
employers to list specific PRCS hazards
on each sign.
In enforcing this provision, OSHA
will make determinations about whether
methods other than warning signs used
by employers to notify employees about
the spaces are truly as effective in
imparting the required information to
employees. Such methods must go
beyond just the generic training
required by this standard, for example,
since generic training would not
identify the location of permit spaces at
a specific worksite. Therefore, an
equally effective means would identify
the PRCS locations so that employees at
the job site who may work near the
PRCSs would be aware of these
locations and would understand the
importance of not entering them. The
final rule places on employers, not
employees, the burden of using an
effective means of identifying the spaces
and controlling the associated hazards.
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If an employer uses a warning sign,
the sign must convey that entering the
space is dangerous and that only
authorized employees may enter the
space. In this final provision, OSHA
included the note from § 1910.146(c)(2)
that a sign reading ‘‘DANGER—
PERMIT-REQUIRED CONFINED
SPACE, DO NOT ENTER’’ or similar
language would satisfy the requirement
for a sign.13 This language is familiar to
employers and employees under the
general industry standard, and is a clear
warning not to enter the space. The
Agency believes that, when properly
warned, employees who are not
authorized to enter the space would
avoid entering the PRCS, thereby
preventing harm that could result from
the PRCS hazards.
Proposed § 1926.1209(a) specified a
two-step process that involved notifying
employees who would be in or near the
permit space, and then posting a sign.
One commenter asserted that limiting
notification to employees who the entry
employer anticipates will be in or near
the PRCS, as provided in proposed
§ 1926.1209(a)(1), would allow entry
employers to avoid this requirement by
claiming they did not anticipate a
particular employee was going to be in
or near the PRCS (ID–086, p. 5). Final
§ 1926.1203(b)(1) requires notification to
exposed employees, which addresses
this commenter’s concern.
Other commenters argued that
notifying employees near a PRCS, or
employees on the jobsite, was
burdensome, and that posting a warning
sign would be sufficient to notify
employees of the PRCSs and their
hazards (ID–124, pp. 6–7; ID–133, p. 2).
At least one other commenter argued
that the barriers required by proposed
§ 1926.1209(b) would not always be
feasible, and that posting warning signs
would be sufficient (ID–104, p. 3).
OSHA agrees with these commenters,
and drafted final § 1926.1203(b)(1) to
specify that notification by posting a
warning sign would provide adequate
notice to employees of the existence,
location, and hazards of the PRCSs.
Another commenter was unsure
whether the posting requirement applies
when employers physically barricade
the space (ID–099, p. 3). It does. Final
§ 1926.1203(b)(1) requires posting a
warning sign or using another equally
effective means of informing exposed
employer about the hazards of the
permit space, and final § 1926.1203(c)
requires an employer to comply with
final § 1926.1203(b)(1) when the
employer prohibits entry into a confined
13 OSHA’s requirements for accident prevention
signs in § 1926.200 also apply.
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space. Barricading the confined space in
a manner that prevents easy entry by
unauthorized employees (for example,
by using a barricade that requires a key
to gain entry) would be an equally
effective means of informing employees
under § 1926.1203(b)(1), provided the
employer ensures that all affected
employees receive information about
such spaces and know that they must
not enter the spaces without
authorization and without taking proper
precautions This means of compliance
is consistent with the general industry
standard. See OSHA Directive CPL 02–
00–100: Application of the PermitRequired Confined Spaces (PRCS)
Standard, Appendix E, Section (c)(4),
and July 22, 1998, letter to Mr. Black.
This commenter, as well as another,
asked which employer has the
responsibility to post the warning sign
if the space is a pre-existing one or there
are multiple entry employers (ID–099, p.
3; –133, p. 2). Each employer that
identifies that space, or receives notice
of it, has a duty to inform exposed
employees about a permit space (see
§ 1926.1203(b) and (c)). Each employer
also has a responsibility to identify
permit spaces in which one or more of
employees it directs may work (see
§ 1926.1203(a)). However, if there
already is a warning sign posted at the
permit space, then the employer does
not need to post an additional sign.
Rather, an employer that relies on a
preexisting sign to identify a space must
ensure that the sign remains posted for
the duration of the potential exposure to
the permit space of employees it directs.
One of those commenters also
asserted that the controlling contractor
or host employer should post the
warning sign because of their
responsibility to ensure safe confined
space entry operations. Final
§ 1926.1203(b)(1) requires the
‘‘employer who identifies a permit
space’’ to post the warning sign. For the
purposes of this standard, such
employers include the controlling
contractor, the host employer, and the
entry employer if these employers have
employees who could be exposed to
permit-space hazards. The standard
merely requires that an employer post
the sign, thereby retaining flexibility
among these entities to determine which
employer is in the best position to post
the sign. When multiple employers will
be working in the same space, each
employer has a separate duty to post the
warning sign. If an employer decides to
enter the space, then this subject must
be resolved between the controlling
contractor and the entry employers as
part of the coordination discussion
required by final § 1926.1203(h)(4).
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Paragraph (b)(2). Final
§ 1926.1203(b)(2) requires each
employer to notify its employees’
representatives and the controlling
contractor, in a manner other than
posting, of the hazards of permit spaces
and the location of those spaces. This
requirement follows proposed
§ 1926.1209(a)(1). The primary purpose
of this provision is to ensure that the
employer who identifies a permit space
conveys the location and general
characteristics of the space to the
designated recipients as soon as
possible. Later, in accordance with
§ 1926.1203(h)(3), the entry employer
must provide to the controlling
contractor a more thorough assessment
of the space, the hazards it expects to
encounter, and the permit program
measures it intends to use to address
those hazards. It is important for
employers to provide the controlling
contractor with this information because
the controlling contractor is in the best
position to convey the employer’s
information to other employers at the
site, and later share this information
with entry employers under final
§ 1926.1203(h). Final § 1926.1203(b)(2)
is also important because it applies to
employers who identify a permit space,
even if they choose not to allow their
employees to enter it, thereby ensuring
that the location of all permit spaces
will be conveyed to the controlling
contractor. Otherwise, the information
exchange in § 1926.1203(h)(3) would
only apply if the employer chooses to
enter the space and become an ‘‘entry
employer.’’
One commenter questioned the
necessity of notifying authorized
representatives, particularly if no such
representatives are on the project site
(ID–099, p. 2). Both the general industry
standard and this final standard
typically require information sharing
between employers and employees and
the employees’ authorized
representatives (see, e.g., § 1910.146(l)
and the discussion of § 1926.1212 later
in this document). OSHA believes that
notifying employees and their
authorized representatives of the
presence of confined spaces on a
worksite will contribute to the
successful implementation of safe entry
operations, and the prevention of
unauthorized entry, by ensuring that
they have knowledge of the hazards
present in the confined space. Sharing
this information with employees’
authorized representatives provides an
additional way to ensure that this
information reaches the employer’s
employees, and alerts the authorized
representatives that there is the
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potential for permit entry operations.
Final § 1926.1203(b)(2) also will
facilitate the effective sharing of this
important information among other
employers at the site whose activities
may impact the PRCS, as well as the
employees of those other employers.
In some cases, an authorized
representative of employees may have
more extensive knowledge than the
employee about particular hazards, or
may be in a better position than the
employee to assess the safety of the
project site based on past experience at
similar sites; therefore, OSHA sees no
reason to deviate from the accepted
general industry practice of information
sharing with the employee’s authorized
representatives. Final § 1926.1203(b)(2)
limits this notification requirement to
only the representatives of the
employer’s employees. Also, while
employers must notify these
representatives in a timely manner to
ensure that the information is available
to the employee representatives and
controlling contractor in sufficient time
for it to be useful, this notification may
be by any means normally used for
communication with the employee
representative or agreed upon in
advance, including telephonic or
electronic communication. If there are
no authorized representatives of
employees, the employer must still
notify employees under final
§ 1926.1203(b)(1), and the controlling
contractor under final § 1926.1203(b)(2).
Another commenter asserted that
notifying the controlling contractor of
the existence of every PRCS was
unnecessary because posting would
provide adequate notification (ID–090,
p. 2). With respect to employees
exposed to confined space hazards,
OSHA agrees with this commenter that
posting will provide these employees
with adequate notification because of
the proximity of the danger sign to the
PRCS. Therefore, final § 1926.1203(b)(1)
requires only posting to notify
employees of confined space hazards,
similar to the general industry standard
at § 1910.146(c)(2). However, with
respect to the controlling contractor and
the employees’ authorized
representatives, a separate notification
requirement is necessary to ensure a
timely and efficient information
exchange, rather than relying on the
controlling contractor and employees’
authorized representatives to explore
the worksite and discover each danger
sign.
Paragraph (c). Final § 1926.1203(c),
which is similar to § 1910.146(c)(3),
requires an employer that identifies, or
has notification of, a permit space to
take measures that are effective in
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prohibiting entry when that employer
decides employees it directs will not
enter permit spaces, and to comply with
the rest of the standard as applicable.
This provision applies to all employers
that: Identify permit spaces under final
§ 1926.1203(a); receive notification from
the controlling contractor of the
presence of a permit space under final
§ 1926.1203(h)(2); receive notification of
the permit space from a danger sign
posted at a permit space; or receive
notification of the permit space from
any other means. While proposed
§ 1926.1209(b) required employers not
conducting confined space operations to
take specific steps to prohibit entry by
employees, final § 1926.1203(c) follows
the performance-oriented language of
the general industry rule.
The effective measures to prohibit
entry could include permanently
closing the space and providing barriers,
supplemented by training employees
and the posted danger signs required
under § 1926.1203(b). In any event, the
steps taken by the employer must be
effective in preventing employee entry
into permit spaces. In OSHA’s
experience, posting signs without
barriers is generally less effective than
with barriers, so employers who choose
the former method must take special
care to ensure that employees they
direct recognize and understand permitspace warning signs, that they are
knowledgeable regarding the hazards
associated with these spaces, and that
they understand that entry into the
spaces is not authorized. This reinforces
the employer’s existing obligation under
§ 1926.21(b)(2) to instruct each
employee in the recognition and
avoidance of unsafe conditions. OSHA
believes that these provisions in the
final rule will protect employees from
unauthorized entry into permit spaces.
Final § 1926.1203(c) also requires
employers covered by this provision to
comply with the rest of the confined
spaces in construction standard, as
applicable. The parallel provision in the
general industry standard requires
employers to comply with specific
provisions of that standard, which
correspond to the following provisions
in this final rule: § 1926.1203(a), relating
to identification of permit spaces in the
workplace; § 1926.1203(b)(1), relating to
informing employees of the presence of
permit spaces; § 1926.1203(f), relating to
changes in confined spaces; and
§ 1926.1203(h), relating to the
controlling contractor’s information
exchange with employers. Employers
must comply with those provisions that
are applicable. For example, under final
§ 1926.1203(h)(2) and (h)(4), controlling
contractors must inform and coordinate
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with employers that direct employees
(including employees not involved
directly in the confined space
operations) whose activities could,
either alone or in conjunction with the
activities performed in the confined
space, foreseeably result in a hazard to
employees in the confined space.
Additional provisions of this standard
may apply as well, depending on the
activities of the employer in question.
For these reasons, in final
§ 1926.1203(c), OSHA used the general
language ‘‘all other applicable
requirements’’ rather than specifying
different sections of the final standard
that may be applicable.
Paragraph (d). Final § 1926.1203(d)
requires any employer that has
employees who will enter a confined
space to have and implement a written
permit-space program that meets the
requirements of this final standard, and
to make the program available for
inspection by employees and their
representatives. Final § 1926.1203(d) is
similar to the corresponding provision
for general industry confined spaces at
§ 1910.146(c)(4), with slight
modifications. OSHA modified the
language of this final provision slightly
to clarify that entry employers do not
necessarily have to develop a separate
written program for each individual
entry. Rather, an entry employer may
reuse a program it developed
previously, or a program developed by
another employer, an industry
association, or other entity, so long as
the program is appropriate for the
specific entry operations and the type of
work involved, and that the program
meets the requirements set forth in final
§ 1926.1204. OSHA anticipates that in
most cases employers will be able to use
or modify an existing program and will
not need to develop an entirely new
program.
Although the final rule requires the
permit program to meet the
requirements of final § 1926.1204,
OSHA will allow employers to fulfill
this obligation through a combination of
the permit program and the entry permit
itself. In a 2006 interpretation of the
general industry standard, the Agency
noted that employers could use the
same permit program to cover multiple
spaces:
If employees will enter a permit space, an
employer must develop and implement the
means, procedures and practices necessary
for safe permit space entry operations in
accordance with § 1910.146(d)(3). Before a
specific permit space is entered, the
employer must document the completion of
the measures required by § 1910.146(d)(3) by
preparing an entry permit. A specific permit
must be completed prior to each entry.
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However, if there are several similar tanks,
with the same conditions and hazards, the
same means, procedures and practices could
be used for this similar group of tanks.
September 21, 2006, letter to Fred
Rubel. OSHA anticipates that, in
practice, some employers in
construction may operate with a general
permit-space program that covers
numerous types of permit spaces and
hazards, along with a specific permit
that includes the unique hazards and
practices applicable to each of those
spaces. The Agency has no objection to
this approach, provided the permit
conveys all of the applicable
information to employees at the
required times, this information is
readily available to the employees for
reference during entry operations, and
employees receive the training
necessary for them to refer to the
appropriate document for the required
information. Therefore, for this purpose,
OSHA allows employers to treat the
permit as part of the written permit
space program required by this section.
The proposed rule did not require an
employer to have a written confined
space program. Instead, in proposed
§ 1926.1219(a), the proposed rule
provided that the employer could keep
either a copy of the standard on the
worksite or a copy of a program that
incorporated the requirements of the
standard. At least one commenter
recommended that OSHA revise
proposed § 1926.1219(a) so that the
provision required employers to have a
written copy of the final rule on site,
regardless of whether the employer had
a written copy of its confined spaces
program (ID–108, p. 4). Several other
commenters disagreed with OSHA’s
approach in the proposal, and urged
OSHA to require a written confined
space program as the general industry
standard does. One commenter stated,
‘‘For a confined space program to be
effective, it must be easy to understand
and implement. . . . Providing
employees with the generic terms of the
standard—even if they read it—would
not provide that kind of clarity. Instead,
they need information specific to
working at the particular worksite
[which a program provides]’’ (ID–220,
p. 28–29). Another commenter asserted,
‘‘Having a written program gives
everyone a clear idea of what is required
and their roles and responsibilities. It
also is an important reference
document. Construction contractors
commonly have written safety
programs, and many already have
written confined space programs as
well, so compliance should not be
difficult’’ (ID–150, p. 3). Another
commenter asserted that the written
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program in the general industry
standard contributed to employee
safety, and that the lack of a written
program in the proposal diminished
employee safety and also weakened
training because ‘‘the vision of what is
expected can not be focused’’ (ID–129,
p. 3). A different commenter stated that
requiring a written plan was the most
important provision of the standard
because it ensures that employers plan
the permit space entry carefully and are
familiar with the hazard analysis; it also
provides an important reference
document (ID–130, p. 1). The latter two
commenters also noted that the lack of
a written program in the proposal was
a step backwards from the general
industry rule.
OSHA wrote this final standard in
performance-based language to be
consistent with the general industry
rule; consequently, this final standard
does not provide the specific
classification system and detailed stepby-step procedures for employers to
follow found in the proposed rule.
Therefore, this final rule is less suitable
as a replacement for a written permit
program than was the proposed rule.
Accordingly, OSHA does not believe
that maintaining a copy of this final rule
on site, in lieu of having a written
permit-space program, will ensure that
an employer’s confined space
procedures will provide adequate
employee protection. OSHA agrees with
the commenters who supported a
written program.
The Agency believes that final
§ 1926.1203(d) will effectively prevent
unauthorized entry into PRCSs, and so
protect employees from encountering
PRCS hazards. The Agency also believes
that it is necessary for employers to
have a written confined space program
at the worksite as a reference for
employees involved in implementing
safe entry procedures. A written
program provides the basis for any
permit-space entry operation, as well as
a reference for guiding and directing
supervisors and employees alike. A
written program also will serve to assign
accountability for all functions related
to permit-space entry, and will aid in
avoiding mistakes and
misunderstandings. Additionally,
because of the compliance flexibility
and discretion that the standard
provides to the employer, a written plan
is essential to demonstrate that the
employer took all aspects of permitspace entry into consideration. For these
reasons, OSHA decided to specify in the
final rule that the permit-space program
be in writing. The written plan must, in
combination with the permit itself,
address the employer’s particular facts
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and circumstances to ensure that the
procedures will protect employees’
safety. For all of the reasons above,
requiring an employer to have and
implement a written permit-space
program, rather than simply relying on
a copy this final rule, will enhance the
protection afforded to employees from
confined space hazards.
Final § 1926.1203(d) explicitly
requires employers to implement their
written permit-space program at the
jobsite. A program that is drafted but not
implemented at the jobsite will not
protect employees from the hazards of
permit-space entry. This requirement is
implicit in the general industry
standard, but OSHA has made it explicit
in this final rule. Additionally, this final
provision requires employers to make
the written program available for
inspection by employees and their
authorized representatives. The Agency
believes that such access is essential for
the successful implementation of a
permit-space entry program. Finally,
final § 1926.1203(d) clarifies that the
employer must make the program
available to employees prior to, and
during, entry operations, which are the
periods that the written program is most
important. During these periods,
employees must understand the
program to ensure their safety. The
general industry rule requires that the
program be available, and this final rule
simply clarifies that it must be available
during these critical periods.
Paragraph (e). Final § 1926.1203(e)
authorizes an employer to use alternate
procedures for permit-space operations
under limited circumstances. The
standard permits these alternative
procedures when an employer can
demonstrate that it eliminated or
isolated all physical hazards through
engineering controls and controls
atmospheric hazards through
continuous forced-air ventilation. OSHA
notes that continuous ventilation is a
control method, and not a method
suitable for eliminating or isolating an
atmospheric hazard, so final
§ 1926.1203(e) spaces remain permitrequired spaces, but can be entered
without a permit program under the
alternate procedures specified in this
final section. OSHA believes that in the
context of construction work, these
alternative procedures provide adequate
safety measures while being more
efficient, and less costly to implement,
than complying with the full permitprogram requirements specified by final
rule § 1926.1204. The requirements for
the alternate procedures allowed under
the final construction rule are similar to
the corresponding provisions of the
general industry confined spaces
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standard at § 1910.146(c)(5), but contain
some substantive modifications
explained in the following paragraphs.
OSHA also added the word ‘‘only’’ to
the introductory provision to clarify that
an employer cannot use these alternate
procedures under any other
circumstances. In addition, final
§ 1926.1203(e) is similar to proposed
§ 1926.1216.
Paragraph (e)(1). Final
§ 1926.1203(e)(1), which is
substantively identical to
§ 1910.146(c)(5)(i), sets forth the six
conditions that an employer must meet
before employees can enter a permit
space under the alternative procedures
specified in paragraph (e)(2). OSHA
modified final § 1926.1203(e)(1) slightly
from the general industry rule to state
explicitly that employers must meet all
of the conditions listed in final
§ 1926.1203(e)(1) before using the
alternate procedures specified by final
§ 1926.1203(e). If employers meet all of
these conditions, the employer need not
comply with final §§ 1926.1204–1206
(addressing permits and permit
programs) or final §§ 1926.1208–1211
(setting forth specific duties for permitrequired confined spaces). Employers in
permit spaces qualified to use the
alternate procedures, however, still
must comply with final § 1926.1207
(training requirements), final
§§ 1926.1212–1213 (Employee
participation and provision of
documents to the Secretary), and the
other provisions of final § 1926.1203,
including the information exchange
requirements in final § 1926.1203(h).
One commenter asserted that any
space that requires ventilation to protect
employees should have an attendant to
monitor conditions in the space (ID–
060, p. 3). The general industry standard
does not require an attendant for entry
under its parallel alternative entry
procedures, and OSHA disagrees with
this commenter, who offered no
explanation for this assertion.
Employers are only eligible to use the
alternate procedures in final
§ 1926.1203(e) when the employer can
demonstrate that the only hazard posed
by the permit space is an actual or
potential hazardous atmosphere, can
demonstrate that continuous forced-air
ventilation alone provides adequate
safety, and the employer continuously
monitors the space during entry. These
requirements make the eligible spaces
safe for employee entry. The more
extensive requirements of final
§ 1926.1204 apply to those permit
spaces with hazards that employers
cannot isolate by engineering controls,
or that the employer cannot control by
ventilation. The Agency notes that the
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alternative entry procedures are only
available for as long as the physical
hazards remain isolated and the
atmospheric hazards controlled.
Employers must take care to ensure that
physical hazards remain isolated and
must exit the space and implement a
full permit program if there is any
indication that workers might be
exposed.
Another commenter requested that
the final rule clarify that employers
need not provide attendants and rescue
services for final § 1926.1203(e) spaces
(ID–099, p. 3). Final § 1926.1203(e)(1)
clarifies that spaces qualifying for the
alternate procedures under
§ 1926.1203(e) do not need to comply
with final §§ 1926.1204–1206
(addressing permits and permit
programs) and §§ 1926.1208–1211
(setting forth specific duties for permitrequired confined spaces).
Paragraph (e)(1)(i). Final
§ 1926.1203(e)(1)(i), which is similar to
the general industry standard at
§ 1910.146(c)(5)(i)(A), sets out the first
condition that employers must meet
before using the alternative procedures.
It provides that an employer may use
these alternate procedures only when
the employer can demonstrate that it
eliminated or isolated all physical
hazards using engineering controls, and
that the only hazard posed by the space
is an actual or potential hazardous
atmosphere. OSHA modified this
provision from the general industry rule
by adding language that an employer
can use the alternative procedures when
it can demonstrate that all physical
hazards are ‘‘eliminated or isolated’’ by
engineering controls within a confined
space, rather than just ‘‘eliminated.’’
OSHA adopted this change from
proposed § 1926.1216(a), which
provided that employers could use the
equivalent provisions when they could
demonstrate the isolation of physical
hazards.
One commenter supported the
proposed rule’s provisions for entry into
‘‘controlled-atmosphere confined
spaces’’ in proposed § 1926.1216, which
the commenter described as requiring
the elimination of all physical hazards
(ID–220, p. 6). Proposed § 1926.1216 did
not, however, specify that physical
hazards must be eliminated before an
employer could use the alternative
ventilation-only procedures in that
section; it required the employer to
‘‘determine and implement an isolation
method’’ for each of the physical
hazards identified (see proposed
§ 1926.1216(a)(1); see also proposed
§ 1926.1216(a)(3), which required the
documentation of the method for
‘‘isolating’’ each physical hazard). The
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final rule, which defines ‘‘isolate or
isolation’’ in final § 1926.1202 to allow
employers to isolate physical hazards
within a confined space like the
proposed rule, and provides for
isolation using the same methods
specified in the proposed definition,
which include the elimination or
removal of hazards. (See the discussion
of this definition earlier in this
preamble.)
Another commenter expressed
concern that, in construction work,
employers would almost never be able
to use these alternate procedures
because the complete elimination of all
physical hazards, such as an iron angle
at head level, from such a space would,
in many cases, not be feasible or
necessary (ID–061, p. 6). OSHA believes
that isolating physical hazards using
methods such as wrapping a lowhanging pipe with foam or locking out
pieces of equipment (see the definition
of ‘‘isolate or isolation’’ in final
§ 1926.1202) can be sufficient to prevent
injury from those hazards. Thus, the
Agency decided that isolating or
eliminating physical hazards is the most
appropriate approach in the
construction context where potentially
isolated physical hazards are likely to be
more prevalent because of the nature of
construction, and adopted the proposed
requirement accordingly.14
Paragraph (e)(1)(ii). Final
§ 1926.1203(e)(1)(ii), which corresponds
to the general industry standard at
§ 1910.146(c)(5)(i)(B), sets out the
second condition required for
employees to use the alternative
procedures: An employer must be able
to demonstrate that continuous forcedair ventilation alone provides adequate
safety from hazardous atmospheres and
that entrants can safely exit the space in
the event the ventilation system stops
working. For the space to be safe under
this final provision, the mechanical
ventilation must control the hazardous
atmosphere at levels that are below the
levels at which they are harmful to
entrants so that, if the ventilation shuts
down for any reason (such as loss of
power), the employees will have
sufficient time to recognize the hazard
and exit the space. Employers have a
responsibility to specify a hazard level
that is adequate for employees to escape
the confined space before the hazard
reaches unsafe levels. As with the
14 The general industry standard does not allow
employers to use the alternative entry procedures
in § 1910.146(c)(5)(ii) if any physical hazard
remains in the space, even if that hazard is
temporarily ‘‘removed’’ or ‘‘isolated’’ in accordance
with the standard. See October 12, 1995,
memorandum to Linda Anku. OSHA does not adopt
that interpretation for this construction rule.
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general industry standard, employers
must account for the introduction of
additional hazards from the work
conducted in the permit space, such as
additional gases generated by painting
or application of coating, and ensure
that the ventilation is adequate to
account for the introduced hazards (see
58 FR 4462, 4488 (Jan. 14, 1993)). In
addition, certain types of work are
inherently unsuitable for entries under
§ 1926.1203(e). In the preamble to
§ 1910.146(c)(5) of the general industry
standard, OSHA explained that ‘‘work
with hazardous quantities of flammable
or toxic substances and hot work are not
permitted’’ because they would
‘‘introduce hazards beyond those
accounted for by the determination that
the permit space can be maintained safe
for entry’’ through mechanical
ventilation alone (id). For the same
reasons, OSHA does not permit this
work for entries under § 1926.1203(e).
Final § 1926.1203(e)(1)(ii) also
requires that the employer be able to
demonstrate that in the event the
ventilation system stops working,
entrants can exit the space safely. OSHA
based this requirement on proposed
§ 1926.1216(a)(2)(ii) which would have
required employers to document their
determination that monitoring
procedures would give sufficient
warning to allow entrants to exit. In the
final rule, OSHA moved the monitoring
requirement to 1926.1203(e)(2)(vi).
However, the Agency retained the
determination requirement in (e)(1)(ii)
to make clear that safe exit time must be
factored into the selection of monitoring
procedures, intervals, and detection
levels, including the levels at which
monitoring alarms are triggered. Safe
exit time is a precondition for reliance
on alternative procedures.
One commenter asserted that
determining what is a sufficient time to
exit, as required by the proposed rule,
would require an industrial hygienist
(ID–114, p. 2). OSHA does not believe
an industrial hygienist is the only
person capable of making this
determination because the final rule
bases the time required for a safe exit on
the physical attributes of the space. Any
person trained in confined-space
operations under final § 1926.1207
should be able to use these attributes to
determine the time needed by entrants
to safely exit the confined space as
required by § 1926.1203(e)(1)(ii). For
example, if the employer is unsure how
quickly the atmosphere would return to
a hazardous atmosphere following a
ventilation failure, the employer can run
a test by shutting off the ventilation
when no one is in the space to
determine the amount of time before the
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continuous monitor alarm sounds. The
rest of the calculation would depend on
the amount of time necessary for
employees to exit the space from their
work locations inside the permit space,
which could also be tested, factoring in
an appropriate safety buffer of time.
Several commenters asserted that
OSHA should allow an employer to use
natural ventilation alone, or suction, to
control a hazard under the alternate
procedures specified by final
§ 1926.1203(e). OSHA addressed these
comments in the earlier discussion of
the definition of ‘‘ventilate or
ventilation’’ in this preamble.
There was a considerable amount of
discussion in the record about whether
the alternative procedures should be
available for isolated spaces in sewers
and other continuous spaces (see, e.g.,
ID–75.1, p. 4; –210, Tr. pp. 176–177,
185–93, 206–208; –211, Tr. pp. 144–
159). For an employer to apply final
§ 1926.1203(e) to a sewer, the employer
would have to demonstrate total
isolation of the section of the sewer
from other potential sources of hazards
(e.g., the sewer distribution system) to
guard against the introduction of new
hazards into the space; the employer
then must demonstrate that the
ventilation system is maintaining the
space sufficiently below the trigger
limits for the atmospheric hazard (e.g.,
below 10 percent LFL or an applicable
PEL) so that employees would have time
to escape if the ventilation failed. Total
isolation of sewer manholes or selected
sections of piping may not be practical
or feasible to prevent hazards (e.g.,
flammable gases) from entering the
space because employers normally
perform entries with the system in
service. See Aug. 15, 1996, letter to
Larry Brown. Final § 1926.1203(e)(1)(ii)
includes a clear requirement that an
employer that relies on continuous
forced-air ventilation to maintain spaces
safe for entry must be able to establish
that other measures are not necessary to
protect entrants. For additional
information about isolating spaces
within sewers and other continuous
confined spaces, see the discussion of
§ 1926.1204(c)(3).
Paragraph (e)(1)(iii). Final
§ 1926.1203(e)(1)(iii), which is identical
to the general industry standard at
§ 1910.146(c)(5)(i)(C), is the third
condition required before an employer
may use the alternative procedures. It
also is substantively similar to proposed
§ 1926.1216(a)(2) and (a)(3), which
provided that employers must test the
atmosphere and document the results;
this final provision, however, is less
detailed than the proposed provisions.
This final provision requires the
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employer to develop monitoring and
inspection data that supports the
demonstrations required by paragraphs
(e)(1)(i) and (e)(1)(ii), i.e., the
elimination or isolation of physical
hazards such that the only hazard in the
space is an actual or potential hazardous
atmosphere, and that continuous forcedair ventilation is sufficient to maintain
the space safe for entry. The
atmospheric-monitoring data must show
that ventilation will keep the
atmosphere inside the permit space safe
for entry. In this context, the final rule
uses ‘‘monitoring’’ to match the general
industry language, but the term
encompasses both the initial testing of
atmosphere and the subsequent
measurements. The data required by
paragraph (e)(1)(iii) are essential for the
employer and employees, as well as
OSHA, to determine whether the
employer can maintain the space safe
for entry with the use of ventilation
alone.
Paragraph (e)(1)(iv). Final
§ 1926.1203(e)(1)(iv), which is identical
to the general industry standard at
§ 1910.146(c)(5)(i)(D), is the fourth
criterion employers must meet to use
the alternative procedures. This
provision also is similar to proposed
§ 1926.1204(b)(2). This final provisions
specifies that, if an initial entry into the
permit space is necessary to obtain the
data required by paragraph (e)(1)(iv), the
employer must perform the entry in
compliance with final §§ 1926.1204–
1211 (i.e., the full permit-space
program).15 This entry requirement,
which was in the proposed rule, is
necessary to protect employees from
hazards that the employer did not fully
identify or assess. The rule requires
employers to obtain monitoring and
inspection data without entry when
feasible, but acknowledges that in many
instances it will be necessary to perform
an initial entry into the space to make
the necessary determinations. This
requirement will ensure that the initial
entry is safe.
Paragraph (e)(1)(v). Final
§ 1926.1203(e)(1)(v), which is identical
to the general industry standard at
§ 1910.146(c)(5)(i)(E), sets out the fifth
15 OSHA recognizes that compliance with final
§ 1926.1204(e)(1) requires employers to test
conditions in the permit space to determine if
acceptable entry conditions exist before entry is
authorized to begin. An employer will be in
compliance if the employer can demonstrate that
initial entry is necessary to gather the data to
comply with § 1926.1203(e)(1)(iii), and enters under
a permit program that complies with all other
provisions except the pre-entry testing in
§ 1926.1204(e)(1). Note that the alternative entry
procedures are not available if the work space is
part of a continuous system and has not been
effectively isolated.
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criterion for using the alternate
procedures. It also is similar to
proposed § 1926.1216(a)(3), though less
detailed. This final provision mandates
that employers document the
determinations and supporting data
required by paragraphs (e)(1)(i) through
(e)(1)(iii) of this final rule, and make
this documentation available to
employees who enter the spaces under
the terms of final § 1926.1203(e), or to
their authorized representatives. This
documentation will enable the
employer, employees, their authorized
representatives, and OSHA to evaluate
the validity of the determinations made
under final § 1926.1203(e) for a
particular permit space.
Paragraph (e)(1)(vi). Final
§ 1926.1203(e)(1)(vi), which is identical
to the general industry standard at
§ 1910.146(c)(5)(i)(F), is the final
condition that employers must meet to
use the alternate procedures. The
section does not correspond to any
section of the proposed rule due to the
different organization of the proposal. It
requires that employers perform entry
under the alternate procedures specified
by final § 1926.1203(e) in accordance
with the specific procedures required by
final § 1926.1203(e)(2).
Paragraph (e)(2). Final
§ 1926.1203(e)(2), which is similar to
§ 1910.146(c)(5)(ii), sets forth the
procedures that employers must follow
for permit-space entries made under
final § 1926.1203(e)(1). The introductory
paragraph in § 1926.1203(e)(2) is
identical to the introductory paragraph
in the general industry standard. This
introductory paragraph does not
correspond to any section of the
proposed rule due to the different
organization of the proposal.
Paragraph (e)(2)(i). Final
§ 1926.1203(e)(2)(i), which is identical
to the general industry standard at
§ 1910.146(c)(5)(ii)(A), requires that
employers must, before removing an
entrance cover, eliminate any
conditions that make it unsafe to do so.
It also is similar to proposed
§ 1926.1216(c)(1). Some conditions in a
permit space may make it hazardous to
remove a cover from the space. For
example, if the atmospheric hazards
within the space cause high pressure in
the space, the cover may blow off in the
process of removing it. To protect
employees from such hazards,
employers must make a determination
as to whether it is safe to remove the
cover. Such a determination requires the
employer to examine the conditions
expected to be in the permit space.
Under high-pressure conditions,
employers must check the cover to
determine if it is hot; if so, the employer
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25401
must loosen a cover fastened in place
gradually to release any residual
pressure. The employer also must
determine whether conditions at the site
could cause a hazardous atmosphere to
accumulate in the space, which would
make it unsafe for employees to remove
the cover. The employer must not
remove the cover until it is safe to do
so.
Paragraph (e)(2)(ii). Final
§ 1926.1203(e)(2)(ii), which is nearly
identical to the general industry
standard at § 1910.146(c)(5)(ii)(B),
requires employers to guard openings to
permit spaces after removing entrance
covers to protect employees from falling
into the space and to protect employees
in the permit space from injuries caused
by objects entering the space. It also is
similar to proposed § 1926.1216(c)(2),
though less specific than the proposed
provision. The guard could be in the
form of a railing, a temporary cover, or
any other temporary barrier that
provides the required protection. If the
opening to the space would not allow
employees and objects to fall into the
space, then no additional guarding is
necessary. Final § 1926.1203(e)(2)(ii)
differs from § 1910.146(c)(5)(ii)(B) in
that it requires the opening to be
‘‘immediately’’ guarded by a railing,
temporary cover, or other temporary
barrier. The general industry rule
requires employers to provide the
guarding promptly. The Agency made
this change to clarify that the guarding
must happen as soon as possible.
Paragraph (e)(2)(iii). Final
§ 1926.1203(e)(2)(iii), which is
substantively identical to the general
industry standard at
§ 1910.146(c)(5)(ii)(C), requires the
employer to test the internal atmosphere
of the permit space with a calibrated,
direct-reading instrument before any
employee enters the space. This
provision also is similar to proposed
§§ 1926.1216(d)(2) and 1926.1205(a)(1),
though not as detailed as the testing
required by proposed § 1926.1205(a). If
the employer can demonstrate that
testing prior to entry is infeasible, then
the employer must at a minimum
comply with permit program
requirements during the testing process
in accordance with
§ 1926.1203(e)(1)(iv).
The employer must test the
atmosphere, in sequence, for oxygen
content, flammable gases and vapors,
and potential toxic gases and vapors.
Employers must first perform a test for
oxygen because most combustible gas
meters are oxygen dependent and will
not provide reliable readings in an
oxygen-deficient atmosphere.
Employers must test for combustible
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gases next because, in most cases, the
threat of fire or explosion is both more
immediate and more life threatening
than exposure to toxic gases. The testing
must be appropriate for the space; for
example, if there is a stratified
atmosphere where gases of different
densities layer within a confined space,
the employer must perform testing at
different depths.
This testing is necessary to determine
whether ventilation alone will maintain
the space safe for entry. The results of
this testing must be within the expected
range for the space, based on the
employer’s determination under
paragraph (e)(1)(ii), or the employer may
not enter under the alternative
procedure.
Paragraph (e)(2)(iv). Final
§ 1926.1203(e)(2)(iv), which is identical
to the general industry standard at
§ 1910.146(c)(5)(ii)(D), prohibits
employees from occupying the space
when a hazardous atmosphere is present
in the space. This provision has the
same purpose as proposed
§ 1926.1216(e)(2)—namely, to ensure
that there is no hazardous atmosphere
in an alternate procedures space during
entry. However, due to the different
organization of the proposed and final
rules, the language and organization of
these two provisions are different. To
ensure that there is no hazardous
atmosphere in a permit space when an
employer enters using the alternate
procedures, final § 1926.1203(e)(2)(iv)
requires employers conducting any
entry into a permit space containing a
hazardous atmosphere to comply with
the full permit-space program
requirements in final §§ 1926.1204–
1211. See also the discussion of final
§ 1926.1203(e)(2)(vii)(A) below.
Paragraph (e)(2)(v). Final
§ 1926.1203(e)(2)(v), which is identical
to the general industry standard at
§ 1910.146(c)(5)(ii)(E), sets out
requirements for using continuous
forced-air ventilation to maintain the
permit space safe for entry. Final
§ 1926.1203(e)(2)(v)(A) also is identical
to § 1910.146(c)(5)(ii)(E)(1) and similar
to proposed § 1926.1216(d)(3). It
requires that no employee may enter the
space until the forced-air ventilation
eliminates any hazardous atmosphere in
the space. Final § 1926.1203(e)(2)(v)(B)
is identical to § 1910.146(c)(5)(ii)(E)(2),
and shares the purpose of proposed
§ 1926.1216(e)(2) to ensure that the
ventilation will continue to control the
atmospheric hazards while the
employer is conducting entry
operations. It requires the employer to
direct the ventilation so as to ventilate
the immediate areas where an employee
is, or will be, present in the space, and
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requires the ventilation to continue
until all employees leave the space.
Final § 1926.1203(e)(2)(v)(C) is identical
to § 1910.146(c)(5)(ii)(E)(3), and has no
corresponding section in the proposed
rule. It requires that the air supply for
the ventilation must be from a clean
source, and must not increase the
hazards in the space. These provisions
ensure that the atmosphere in the
permit space will remain safe during the
entire entry operation.
Paragraph (e)(2)(vi). Final
§ 1926.1203(e)(2)(vi), which is similar to
the general industry standard at
§ 1910.146(c)(5)(ii)(F), requires entry
employers to continuously monitor the
atmosphere in the permit space.
Employers may use periodic
monitoring, rather than continuous
monitoring, only if the employer can
demonstrate that the equipment for
continuous monitoring is not
commercially available or that periodic
monitoring is sufficient to ensure that
the conditions in the PRCS remain
within planned limits. This final
provision also clarifies that employers
must use some form of monitoring
during confined space operations, and
that they must use periodic monitoring
if continuous monitoring is not used to
ensure that there is always monitoring
of the space occurring.
OSHA retained in this final rule the
requirement in the proposal that
employers use continuous monitoring
(see proposed § 1926.1216(e)(2)). This
requirement for continuous monitoring
differs from the general industry rule,
which requires ‘‘periodic testing.’’ In the
typical PRCS found at construction
sites, it is often difficult for the
employer to predict with reasonable
certainty the levels of hazardous
atmospheres in a PRCS. In many
instances, the employer will have little
or no past experience with the
particular PRCS, and will lack reliable
historical data on hazardous atmosphere
levels. Also, conditions in a PRCS may
vary as construction work progresses,
causing unexpected increases in
hazardous atmosphere levels. For
example, alterations to the wall of a
PRCS may allow a hazardous gas to
enter the PRCS, thereby increasing the
level of the hazardous gas in the PRCS
from the level measured before altering
the wall. In addition, construction
equipment in the space may not operate
as expected, resulting in a discharge of
hazardous gasses into the space at a
higher rate than anticipated. In short,
construction work tends to follow a
somewhat unpredictable course and,
thus, requires frequent atmospheric
monitoring. Because of this high level of
unpredictability, OSHA believes that
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continuous monitoring is necessary to
ensure that affected employees,
especially entrants, receive adequate
protection. Continuous monitoring
enables employers to quickly recognize
deteriorating conditions, including the
introduction of new atmospheric
hazards into the confined space, and
then to take timely actions to protect
employees. For additional discussion of
the need for continuous monitoring and
its implementation, see the discussion
of final § 1926.1204(e)(2) (discussion of
continuous monitoring of permit spaces
entered under a full permit program,
rather than the alternative procedures).
Final § 1926.1203(e)(2)(vi) also
requires the continuous-monitoring
equipment to have a functional alarm
that will notify all entrants when an
atmospheric hazard reaches a specified
threshold designed to give entrants an
opportunity to escape before a
‘‘hazardous atmosphere’’ develops, or
check the monitor with sufficient
frequency to alert other entrants when
an atmospheric hazard reaches that
specified threshold. The purpose of
continuous monitoring is to protect
entrants by ensuring that the
atmospheric hazards remain at or below
levels specified by final
§ 1926.1203(e)(1)(ii), and having an
alarm will immediately warn entrants
when the atmospheric hazards reach
those levels. The monitoring equipment
serves no purpose if the employer does
not convey the monitoring results to
entrants in a timely manner. Requiring
employers to check the monitor ‘‘with
sufficient frequency’’ is a performance
measure that means that the employer
must demonstrate that the permit space
is monitored such that a change in
atmosphere or other potential hazard
will be identified in time to allow
entrants to exit the permit space safely.
Checking the monitor regularly also will
alert entrants if the monitor
malfunctions.
Several commenters supported the
requirement for continuous monitoring
(ID–106, p. 2; –220, p. 7; –211, Tr. pp.
44–45). However, some of these
commenters also urged the Agency to
require continuous monitoring without
exception (ID–106, p. 3; –220, p. 7). The
Agency recognizes that in some PRCSs,
especially when an employer conducts
numerous entry operations in the same
PRCS and finds through repeated
monitoring that the atmosphere in the
PRCS is stable, the employer may be
able to show that periodic monitoring is
sufficient to ensure that the conditions
in the PRCS remain within planned
limits. Nevertheless, when the employer
uses periodic monitoring, it must be of
sufficient frequency to ensure the
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control of atmospheric hazards as
planned and must be able to detect new
hazards in time to protect employees. In
some cases, continuous monitoring may
not be possible; for example, continuous
monitoring may not be available when
the atmospheric hazard is a particulate.
Therefore, when the employer shows
that periodic monitoring is adequate, or
demonstrates that the technology for
continuous monitoring is not available,
this final provision permits the
employer to use effective periodic
monitoring instead of continuous
monitoring. The proposed rule
contained the same exceptions.
The Agency also retained the
language from the general industry rule
that the monitoring must ensure that the
continuous forced-air ventilation is
preventing the accumulation of a
hazardous atmosphere. The monitoring
required by final § 1926.1203(e)(2)(vi),
in combination with the continuous
forced-air ventilation required by final
§ 1926.1203(e)(2)(v), ensure that
entrants remain protected the entire
time they are present within the permit
space.
Finally, final § 1926.1203(e)(2)(vi)
specifies that the employer must
provide any entrant, or his or her
authorized representative, with the
opportunity to observe the monitoring
required by this paragraph. This
paragraph does not require employees
and their authorized representatives to
observe the monitoring; however, it
provides employees and their
authorized representatives with the
option of observing should they choose
to do so. OSHA believes that allowing
employees and their authorized
representatives to participate in this
manner will contribute to the successful
implementation of safe entry operations
by enhancing their awareness of the
status of the hazards in the confined
space.
Paragraph (e)(2)(vii). Final
§ 1926.1203(e)(2)(vii), which is similar
to the general industry standard at
§ 1910.146(c)(5)(ii)(G), specifies what an
employer must do if it detects a hazard
in a space regulated by the
§ 1926.1203(e) alternate procedures
during entry. Final § 1926.1203(e)(2)(vii)
differs from the general industry rule in
that it expressly applies to any hazard,
not just a hazardous atmosphere. This
final provision is similar to proposed
§ 1926.1216(f), which also referred to
physical, as well as atmospheric,
hazards. The Agency made this change
to ensure that this paragraph was
consistent with final
§ 1926.1203(e)(1)(i), which allows
employers to use the alternate
procedures of final § 1926.1203(e) after
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eliminating or isolating all physical
hazards in the space. Thus, the
employer must implement the
requirements of this final paragraph
when there is a new physical hazard, a
previously recognized physical hazard
no longer remains isolated, or there is a
hazardous atmosphere present.
Paragraphs (e)(2)(vii)(A)–(C). Final
§§ 1926.1203(e)(2)(vii)(A)–(C), which
are similar to general industry
§§ 1910.146(c)(5)(ii)(G)(1)–(3), set the
requirements for what an employer
must do after detecting a hazard in a
space regulated by § 1926.1203(e)
during entry. Final
§ 1926.1203(e)(2)(vii)(A) is identical to
the general industry standard at
§ 1910.146(c)(5)(ii)(G)(1), and requires
employees to exit the permit space
immediately after detecting a hazard.
Final § 1926.1203(e)(2)(vii)(B) is similar
to the general industry standard at
§ 1910.146(c)(5)(ii)(G)(2), except that it
applies to all hazards, not just
atmospheric hazards as the general
industry requirement does. The final
rule requires the employer to evaluate
the permit space to determine how the
hazard developed. Final
§ 1926.1203(e)(2)(vii)(C) is similar to the
general industry standard at
§ 1910.146(c)(5)(ii)(G)(3), though it too
refers to all hazards (physical and
atmospheric). It requires the employer
to implement measures to protect
employees from the hazard before
reentering the space under the alternate
procedures specified by final
§ 1926.1203(e). Detecting a hazardous
atmosphere during entry indicates that
the employer did not maintain the
permit space safe for entry, so before
authorizing any subsequent entries into
the space under final § 1926.1203(e), the
employer must determine what went
wrong and take whatever measures are
necessary to prevent a recurrence.
Paragraph (e)(2)(viii). Final
§ 1926.1203(e)(2)(viii) requires an
employer to provide a safe means of
access and egress during confined space
entries under final § 1926.1203(e). For
example, when employees are working
in an underground vault, the employer
must provide, and ensure the use of, a
safe means of entry into and exit from
the underground vault, and ensure that
the method complies with applicable
OSHA requirements (e.g., 29 CFR part
1926, subpart X—Stairways and
Ladders). Providing proper entry and
exit equipment such as ladders is
critical under emergency-egress
conditions to ensure that employees exit
a PRCS in a timely and safe manner.
Proposed § 1926.1216(c)(3) required that
employers provide a safe method of
entry and exit, and that this method
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comply with applicable OSHA
requirements. This final provision
retains the proposed requirement for a
safe means of entry and exit, but did not
retain the language requiring
compliance with other ‘‘applicable
OSHA requirements’’ because it is
unnecessary: Such requirements apply
regardless of whether this statement is
included in the final rule. If another
OSHA standard covers the means of
entry and exit, the employer must
comply with that applicable standard.
One commenter supported the
proposed rule’s requirement for safe
entry and exit (ID–220, p. 8). Two others
commenters agreed that assuring safe
entry and exit is necessary, but asserted
that it is often infeasible to use
stairways that meet the requirements for
stairways or ladders that comply with
29 CFR part 1926, subpart X’s 4:1 ratio
because of the configuration of these
spaces (ID–075, p. 10; ID–124, p. 9).
Subpart X contains many requirements
for safe stairways and ladders, including
the spacing between steps and rungs,
the condition of the ladders, and the
ratio of 4:1 for the vertical angle of
portable non-self-supporting ladders
relative to the structures supporting the
ladders (see 29 CFR 1926.1050 et seq.).
These comments seem to be requesting
a blanket exemption from these OSHA
requirements, but this request is overly
broad. Even these commenters did not
argue that all requirements of subpart X
would be infeasible, or that the
requirements in question are always
infeasible. Employers may assert on a
case-by-case basis under this standard,
as they could under any other OSHA
standard, that a requirement is
infeasible in a particular situation. In
such a situation, the employer has the
burden of proving infeasibility. The
employer also must make every effort to
abate the hazard caused by having the
ladder at a steeper angle than permitted,
possibly by securing the top and bottom
of the ladder while it is in use so it will
not slip, and by training employees on
climbing at a steeper angle.
Final § 1926.1203(e)(2)(viii) also
requires that an employer use hoisting
systems designed and manufactured
specifically for personnel hoisting. This
provision includes an exception to this
requirement that allows for the use of
job-made hoisting systems if a registered
professional engineer approves these
systems for personnel hoisting prior to
use in entry operations regulated by
§ 1926.1203(e). Unlike the proposed
rule, the final rule requires engineer’s
approval to be in writing to ensure that
the specifications and limitations of use
are conveyed accurately to the
employees implementing the job-made
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hoist, and that the approval can be
verified. However, the final rule
prohibits the use of commercial hoisting
systems not designed and manufactured
specifically for personnel hoisting
because OSHA believes that employers
cannot use such hoisting systems safely
for this purpose. The requirements of
final § 1926.1203(e)(2)(viii) for hoisting
systems will eliminate further injuries
and deaths of employees that could
occur from the use of a hoisting system
not designed specifically for personnel
hoisting. This final rule provides
employers with flexibility in choosing
personnel hoisting systems by allowing
a registered professional engineer to
approve a job-made system. OSHA
believes that either option ensures that
the personnel hoisting system will meet
the design specifications needed for
employees to safely access a space. This
final provision ensures that authorized
entrants will always have a safe and
effective means of entering and exiting
the space, including escaping during an
emergency.
There is no corresponding general
industry provision that has
requirements similar to final
§ 1926.1203(e)(2)(viii) for the alternative
entries regulated under § 1910.146(c)(5).
Section 1910.146(d)(4)(vii) requires safe
access and egress, but that provision
does not explicitly apply to the alternate
procedures used under § 1910.146(c)(5).
However, hazardous conditions may
still arise in these spaces, particularly if
the ventilation system stops
functioning, thus making safe exit of
entrants necessary. None of the
comments OSHA received on proposed
§ 1926.1216(c)(3) provided a reason to
exclude these requirements from the
final standard. The same reasons
provided in this preamble for requiring
safe access and egress during permitspace operations governed by final
§ 1926.1204 also apply to the spaces
regulated under final § 1926.1203(e)
and, therefore, OSHA adopted the
proposed requirement in this final rule.
Paragraph (e)(2)(ix). Final
§ 1926.1203(e)(2)(ix), which is identical
to general industry
§ 1910.146(c)(5)(ii)(H), requires the
employer to verify that the permit space
is safe for entry and that the employer
took the measures required by final
§ 1926.1203(e)(2). This provision also is
similar to proposed § 1926.1216(d)(4),
though it is less detailed than that
proposed provision. The verification
must be in the form of a certification
that contains the date, the location of
the space, and the signature of the
certifying individual; the employer must
make the certification available to
entrants. The certification, in
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combination with the documentation
required under final
§ 1926.1203(e)(1)(v), will document the
employer’s efforts to comply with final
§ 1926.1203(e)(2), enable OSHA and the
employer to evaluate compliance with
the standard, and, if permit-space
incidents occur, assist OSHA and the
employer in ascertaining the causes of
those incidents.
One commenter supported the more
detailed documentation requirements
specified by the proposed rule, and the
requirement in proposed
§ 1926.1216(a)(3) and (d)(1) to verify
prior to entry that physical hazards
remain isolated (ID–220, pp. 6–7). The
commenter noted that these
requirements serve as an ‘‘important
check that measures that may have been
taken in weeks, days, or . . . a previous
work shift are still in place and
effective’’ (id.). This final rule preserves
the important check function because it
also requires documentation of the
isolation or elimination of physical
hazards, in final § 1926.1203(e)(1)(v),
and provides that entry under final
§ 1926.1203(e)(2) can occur only under
the conditions set forth in final
§ 1926.1203(e)(1). This final rule,
however, does so with the flexibility of
the more performance-orientated
language of the general industry
standard.
Final § 1926.1203(e)(2)(ix) also
requires that the employer date the
certification and make it available to
entrants. This requirement ensures that
the certification provides information to
the entrants about the latest conditions
in the space the entrants will soon be
entering. One commenter complained
that requiring the name and signature of
the individual who completed the
isolation work, as the proposed rule did,
could cause unspecified logistical
problems (ID–114, p. 2). OSHA believes
that requiring the signature only of the
individual who provides the
certification, as required by the general
industry standard, will resolve any
logistical problems.
Another commenter noted that using
the term ‘‘verification document’’ in the
proposed rule for spaces equivalent to
the spaces regulated by final
§ 1926.1203(e), while using the term
‘‘entry permits’’ for other permit spaces
in the proposed rule, was confusing (ID–
099, p. 3). The documentation
requirement in proposed § 1926.1216
was more detailed than the
documentation requirement in this final
rule and, thus, more similar to an entry
permit. Final § 1926.1203(e)(2)(ix) uses
the term ‘‘certification,’’ and this
certification contains much less
information than the entry permits
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required for other permit spaces and,
therefore, is distinct (see final
§ 1926.1206). The general industry
standard also uses this terminology,
and, given the differences in
documentation for the two types of
spaces in the final rule, the Agency
believes that the terminology is clear.
Paragraph (f). Final § 1926.1203(f),
which is nearly identical to the general
industry standard at § 1910.146(c)(6),
addresses the reevaluation of confined
spaces. This final provision requires
each entry employer to reevaluate nonpermit required confined spaces when
there is a change in use or configuration
that may increase the hazards to
entrants, and to reclassify the space as
a permit space if necessary. The Agency
believes this requirement is necessary
because conditions around and in
confined spaces may change, especially
when multiple employers are
performing various construction
activities around or in the space.
Consequently, when indications of
changes in the previous conditions arise
that may increase the likelihood for a
hazard to develop, the employer must
reevaluate the confined space to ensure
adequate employee protection. Final
§ 1926.1203(f) differs from the general
industry rule in that it refers to ‘‘each
entry employer’’ rather than ‘‘the
employer’’ to emphasize that
reevaluation is the responsibility of each
employer that conducts entry operations
in a confined space.
Several commenters were unsure
what type of new information would
trigger reevaluation under final
§ 1926.1203(f) (ID–098, p. 1; ID–124,
p. 8). These commenters asked, for
example, whether working with
gasoline equipment near a confined
space or driving a vehicle near a
confined space would trigger
reevaluation. Whether these conditions
would trigger a reevaluation depends on
whether it is foreseeable that the
operation of the equipment or vehicle
could increase the hazards in the space,
such as by creating emissions that could
enter the space or sparks that could
ignite a fire in the space. Indications of
a need for reevaluation may include, but
are not limited to: (1) A change in the
configuration or use of, or in the type of
work conducted or materials used in,
the confined space; (2) new information
regarding a hazard in or near a confined
space; and (3) when an employee or
authorized employee representative
provides a reasonable basis for believing
that a hazard determination is
inadequate (see also § 1926.1204(e)(5)).
OSHA does not expect employers to
reevaluate spaces when trivial changes
occur that do not affect the
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characteristics of the space or the work
performed in the space.
One commenter suggested that OSHA
include the time lapse since the initial
evaluation as an indication of the need
for a reevaluation (ID–013, p. 4). This
commenter seems to be addressing
situations in which several days or
weeks could elapse between entries into
a confined space, during which changes
in environmental conditions and other
conditions could occur that may
increase hazards in the confined space.
For example, a container of coating
chemicals left slightly ajar in a space, or
a substance that is leaching slowly
through the soil into a new construction
space, might release fumes at a slow rate
so that they would not become
concentrated or hazardous over the
course of a single day if the space has
some ventilation, but could create a
hazardous atmosphere if left in a closed
and non-ventilated confined space for a
longer period of time. OSHA agrees that
employers should consider elapsed time
since the last evaluation in determining
when to reevaluate a confined space
because of the possibility that hazards
may increase during this period. Unlike
proposed § 1926.1207, which listed
conditions that would require
reassessment, this final provision uses
the more performance-oriented language
of the general industry rule. Therefore,
this final provision does not list all the
conditions that could trigger a
reevaluation of the space because the
circumstances that could increase the
hazards in a space and prompt a
reevaluation are too numerous to list.
One commenter was unsure how the
entry employer would be able to detect
whether changing conditions would
require reevaluation (ID–086, p. 5).
According to this commenter, the
language of proposed § 1926.1204(b) did
not require the employer to obtain
information necessary to classify a
space. The commenter’s reading of the
proposed rule is incorrect, and would
also be incorrect of the final rule. Final
§ 1926.1203(a) requires each employer
that has employees who may work in a
confined space to ensure that a
competent person identifies all confined
spaces on the site, and to determine,
through initial testing as necessary,
which of these spaces are permit spaces,
and to consider and evaluate other
elements of the confined space.
Therefore, under § 1926.1203(f) of this
final rule, the entry employer must also
ensure that a competent person compile
the information necessary to determine
whether a reevaluation is necessary, and
conduct the reevaluation when
necessary.
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Paragraph (g). Final § 1926.1203(g),
which is similar to the general industry
standard at § 1910.146(c)(7), allows an
employer to reclassify a permit space as
a non-permit confined space only under
the limited circumstances set forth in
final § 1926.1203(g)(1)–(4). Final
§ 1926.1203(g) is substantively similar
to proposed § 1926.1217(a). When there
is no actual or potential hazardous
atmosphere present in the space, and
the employer eliminates all physical
hazards in a space, this section allows
an employer to reclassify the space as a
non-permit confined space. The Agency
believes that, in some instances, the
procedures specified by final
§ 1926.1203(g) will be more efficient
and less costly to implement than
permit-space requirements. The Agency
made three non-substantive changes
from § 1910.146(c)(7) in the
introductory paragraph of final
§ 1926.1203(g). First, OSHA added the
word ‘‘only’’ to the provision. Second,
OSHA changed ‘‘under the following
procedures’’ to ‘‘when all of the
applicable requirements in paragraphs
(g)(1) through (g)(4) have been met.’’
OSHA made these non-substantive
changes to clarify that an employer may
use only these procedures to reclassify
a permit space under this rule, and that
the employer must comply with each of
the provisions under final
§ 1926.1203(g) to reclassify a permit
space. Third, to provide consistency
with the requirement that an employer
use a competent person to conduct the
initial evaluation of the space, the final
rule specifies that a competent person
must also conduct the reevaluation and
reclassification of the space.
One commenter requested that OSHA
clarify whether employers must provide
attendants or retrieval systems for
spaces when final § 1926.1203(g)
applies (ID–099, p. 4). Another
commenter asserted that OSHA should
require attendants for spaces regulated
by final § 1926.1203(g) (ID–060, p. 3).
Final § 1926.1203(g) does not require
compliance with the attendant or rescue
provisions of this final rule once the
space has been reclassified as a nonpermit space. Prior to the
reclassification, however, the full permit
program requirements apply. In general,
such requirements are unnecessary for a
space that has been reclassified as a
non-permit space under § 1926.1203(g)
because, to qualify as a non-permit
space, there can be no actual or
potential hazards in the space. However,
an employer may elect to comply with
the PRCS requirements, including the
attendant and rescue provisions, even if
the employer reclassifies the space as a
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25405
non-permit space under final
§ 1926.1203(g).
Paragraph (g)(1). Final
§ 1926.1203(g)(1), which is identical to
general industry § 1910.146(c)(7)(i),
ensures that an employer may only
reclassify a PRCS as a non-permit space
if no actual or potential atmospheric
hazards are present and the employer
eliminates all other hazards in the
space. This final provision also is
similar to proposed § 1926.1217(a)(1)
and (d)(1). OSHA expects that this
provision will apply primarily to spaces
where the employer eliminated or
isolated the physical hazards. While this
final provision would allow employers
flexibility in the methods and
procedures they use to identify and
eliminate physical hazards, it would not
relieve them from conducting a
thorough assessment of the space and
identifying hazards that include:
Existing or potential liquids, solid
materials, and electricity associated
with processes; the use of equipment,
ductwork, and conduits with exposed
valves or that terminate in the confined
space; exposed and energized electrical
conduits; connected rooms and
reservoirs that present engulfment
hazards; and any other recognized
hazards covered by OSHA construction
standards or the general duty clause, 29
U.S.C. 654(a)(1). OSHA believes that
eliminating or isolating all physical
hazards in the space protects employees
who perform construction work in the
space. For additional information about
isolating spaces within sewers and other
continuous confined spaces, see the
discussion of § 1926.1204(c)(3).
Paragraph (g)(2). Final
§ 1926.1203(g)(2), which is similar to
the general industry standard at
§ 1910.146(c)(7)(ii), requires an entry
employer considering reclassification to
eliminate or isolate confined space
hazards, when possible, without
entering the space. This requirement
parallels the requirement in final
§ 1926.1203(e)(1)(iv), and OSHA is
including the requirement here for the
same reasons, although it applies to
different spaces. If it is not possible for
an entry employer to eliminate or isolate
confined space hazards without entering
the space, then final § 1926.1203(g)(2)
requires the entry employer to comply
with all PRCS procedures in final
§§ 1926.1204–1211 until elimination or
isolation of the hazards is complete.
Final § 1926.1203(g)(2) differs slightly
from the general industry requirement
in that it contains a new first sentence
clarifying that the entry employer must
eliminate or isolate the hazards without
entering the space unless it is infeasible
to do so. This slight revision, which
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OSHA based on proposed
§ 1926.1217(a)(3), improves employee
protection by reducing unnecessary
entry into permit spaces for
classification purposes. OSHA received
no comments on the parallel provision
in the proposed rule.
In the final rule, OSHA also allows
employers to isolate physical hazards,
rather than eliminate them entirely. The
effect must be the same—employees
must be effectively protected from any
potential exposure to any hazard—and
it is therefore substantively similar to
the general industry rule. OSHA
included the isolation option, however,
in response to comments indicating that
full permit program requirements were
not necessary when employers can use
engineering controls to prevent
employee exposure to physical hazards,
even if the item causing the hazard is
not totally removed from the space (see,
e.g., ID–210, Tr. pp. 56, 308–309, 327–
328).
For the purpose of reclassifying a
permit-required confined space that has
potential energy sources in it, the
methods the employer must use depend
on the types of energies requiring
elimination or isolation. OSHA’s
lockout/tagout requirements address
electro-mechanical hazards, but
lockout/tagout will not eliminate
hazards associated with flowable
materials such as steam, natural gas, and
other substances that can cause
hazardous atmospheres or engulfment
hazards in a confined space. See OSHA
Directive CPL 02–00–147: The Control
of Hazardous Energy—Enforcement
Policy and Inspection Procedures, at pp.
3–10 (Feb. 11, 2008). Employers can
isolate these hazards by using the
techniques described in the definition of
the terms ‘‘isolate’’ or ‘‘isolation’’:
blanking, blinding, misaligning or
removing sections of lines or pipes, and
a double-block and bleed system. See
also August 25, 1995, letter to William
K. Principe.
‘‘Elimination’’ means no on-going
measures are necessary to keep the
space free of a hazard; if continued
operation of ventilation is required to
address a hazard, for example, then the
hazard is controlled, not eliminated.
See, e.g., September 19, 1994, letter to
Edward Donoghue. If the employer uses
ventilation to eliminate an atmospheric
hazard from a space (as opposed to
controlling the hazard), the employer
must perform verification monitoring
with the ventilation system off to
establish the elimination of any
atmospheric hazards before reclassifying
the space. See November 11, 1993, letter
to Trey Mayfield. Employers usually
may not reclassify some confined
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spaces, such as tank containers, as nonpermit spaces because residues may
persist, resulting in potential
atmospheric hazards. For example, the
tank shell could oxidize, former
contents could leach after absorption
into the tank coating or lining, and
contents trapped between the lining and
the tank shell could leak. See September
20, 1994, letter to J.B. Saunders.
OSHA notes that the elimination of a
hazard as required by final rule
§ 1926.1203(g)(2) will not necessarily
result in the re-classification of the
space as a non-permit space. The
employer must still ensure that a
competent person performs a full
reevaluation of the permit space before
reclassifying the space. For example, if
an employer completes an initial
evaluation of a space and determines
that there is a single electrical hazard
that can be locked out, but no
atmospheric hazards, the employer must
lock out the electrical hazard, entering
the permit space under the full permit
program requirements of § 1926.1204 if
entry is necessary. Because the person
who locks out the energy hazard may or
may not be focused on the evaluation of
the entire permit space, that employer’s
competent person must still verify that
that the hazard is properly isolated, and
that no other hazards are present, before
the employer may re-classify the space
as a non-permit space.
Final § 1926.1203(g)(2) also includes
the note from the general industry
standard stating that control of
atmospheric hazards through forced-air
ventilation does not constitute
elimination of the hazards. Final
§ 1926.1203(e), not § 1926.1203(g),
covers permit-space entry when the
employer can demonstrate that the
forced-air ventilation alone will control
any atmospheric hazards within in the
space. Final 1926.1203(g) requires the
complete elimination of such hazards.
OSHA revised ‘‘hazards’’ to
‘‘atmospheric hazards’’ in the second
sentence to reflect the change in final
§ 1926.1203(e)(1)(i), which will permit
employers to use the alternative
procedures if they isolate or eliminate
all physical hazards. Employers may
reclassify the space as a non-permit
space under final § 1926.1203(g) even if
a physical hazard remains, so long as
the hazard is completely isolated such
that employees cannot be exposed to it.
OSHA does not view this as a
substantive change from the general
industry standard, which allowed
employers to treat isolation of physical
hazards as elimination of those hazards
for purposes of reclassifying a permit
space. See October 12, 1995,
memorandum to Linda Anku.
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OSHA refers to ‘‘atmospheric
hazards’’ in the note to § 1926.1203(g),
rather than using the term ‘‘hazardous
atmosphere’’ as in § 1926.1203(e), to
emphasize the distinction between
control and elimination of airborne
hazards. A ‘‘hazardous atmosphere’’
requires certain levels of contaminants
in the air (e.g., a flammable gas over 10
percent of its LFL or a concentration of
a substance exceeding its PEL). The
alternative procedures in final
§ 1926.1203(e) may be used when the
employer eliminates any ‘‘hazardous
atmosphere’’ even if the employer
anticipates some presence in the air of
a hazardous substance that must be
controlled through practices to keep the
substance at safe levels. Therefore a
§ 1926.1203(e) space remains a permitrequired space that can be entered
without a permit so long as the controls
remain effective. Final § 1926.1203(g),
in contrast, requires the total
elimination of ‘‘atmospheric hazards’’
prior to entry, which means that the
breathing atmosphere contains no
potentially hazardous substance that
would make it a potentially hazardous
atmosphere; therefore, the employer has
no need to maintain practices to control
it (hence, it is not a permit-required
space). For example, an employer can
eliminate a ‘‘hazardous atmosphere’’ of
methane by reducing the concentration
of methane in the space from 12 percent
of its LFL to 9 percent. However, the
methane is still an ‘‘atmospheric
hazard’’ at the lower 9 percent
concentration because, without the
alternative procedures that include
ventilation, the level of methane could
rise and injure or kill the workers inside
the space. To eliminate the
‘‘atmospheric hazard’’ caused by
methane, the employer must eliminate
all of the methane from the space, and
maintain this condition without forcedair ventilation or other practices.
Paragraph (g)(3). Final
§ 1926.1203(g)(3), which is nearly
identical to the general industry rule at
§ 1910.146(c)(7)(iii), requires an entry
employer seeking to reclassify a permit
space to document the basis for
determining that it eliminated all
permit-space hazards through a
certification that contains the date, the
location of the space, and the signature
of the certifying individual. In addition,
the employer must make the
certification available to each employee
entering the space or his or her
authorized representative. The employer
must substantiate all determinations so
that employers, employees, and the
Agency have the means necessary to
evaluate those determinations and
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ensure compliance with the conditions
that would enable the employer to
conduct entry operations using the
alternate procedures following
reclassification.
This final provision is necessary to
protect employees from physical or
atmospheric hazards on initial entry
into the space under final
§ 1926.1203(g), and to ensure that the
space remains safe during entry
operations. The requirement to make the
certification available to employees or
their authorized representatives ensures
that entrants have the information
necessary to detect developing hazards
while they are working in the space.
Proposed § 1926.1219(d) provided
that the employer must maintain an
equivalent verification document until
the work in the confined space is
complete. One commenter asserted that
OSHA should require employers to
maintain records of these
determinations for years to aid OSHA
and the National Institute for
Occupational Safety and Health
(NIOSH), and to protect a company from
potential litigation in the future; the
commenter, however, did not specify
exactly how OSHA and NIOSH would
use these records (ID–060, p. 2).
Another commenter stated that
employers only need to maintain the
certification until the completion of the
project (i.e., as long as there are entrants,
the certification must be available to
those entrants) (ID–108, p. 3).
Nevertheless, the Agency recognizes
that confined spaces not classified as
PRCSs do not involve hazards as
defined in this standard. Therefore,
unlike permit-space entry permits, the
Agency believes that it is not necessary
for entry employers to maintain the
certification required under final
§ 1926.1203(g)(3) for review and
evaluation after completion of the work.
The Agency agrees with the latter
commenter that the purpose of
certification is to allow employees and
employers to detect any changes from
the original entry conditions during
confined space operations, and believes
that the minimal useful information
gained from these records likely would
not justify the burden of maintaining
them. Furthermore, no provision in this
final rule prohibits an entry employer
from maintaining this information for a
period longer than the period required
by the final rule.
Paragraph (g)(4). Final
§ 1926.1203(g)(4), which is similar to
§ 1910.146(c)(7)(iv), requires that
whenever a hazard arises in a space
reclassified under final § 1926.1203(g),
employees must evacuate the space, and
the entry employer must reevaluate the
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space. This final provision also is
similar to proposed § 1926.1217(e)(2).
The Agency believes that this final
provision is necessary to protect
entrants when conditions around and in
confined spaces change, especially
when performing construction activities
around or in the space. Having a hazard
arise in a reclassified space indicates
that the previous evaluation was
insufficient or that there has been a
significant departure from the previous
conditions; therefore, a thorough
reevaluation of the entire space is
critical.
This provision indicates clearly that
entry employers retain responsibility for
the safety of employees who enter
spaces after they reclassify the spaces as
non-permit confined spaces. The
employer must determine if it is still
appropriate, under the circumstances
identified through the reevaluation, to
classify the space where the hazard
arose as a non-permit confined space. A
reevaluation aimed at reestablishing
compliance with final § 1926.1203(g)
will involve the demonstrations, testing,
inspection, and documentation required
in paragraphs (g)(1) through (g)(3) of this
final rule. OSHA anticipates that some
employers will seek to reestablish
compliance with final § 1926.1203(g),
while others will choose to conduct the
remainder of its entries in that space in
accordance with the full permit-space
program requirements specified by final
§§ 1926.1204–1211. The Agency’s
concern is that the approach chosen
must adequately protect employees who
enter the spaces.
In some cases employers might need
to require their employees to exit the
space temporarily during a limited
event where the hazard is already
known and temporary, such as when an
employer temporarily removes workers
from an underground confined space
while other work is conducted above
the underground confined space. In this
situation, the employer can allow
employees to re-enter without reclassifying the space as a permit space
after completing a reevaluation of the
structural integrity of the space to make
sure that the work above the
underground confined space did not
affect that space. In other cases,
however, a new unanticipated hazard in
the space means that the status of the
space reverts to a permit-required
confined space until the employer can
identify and address the hazard and
reclassify the space as a non-permit
space under § 1926.1203(g). As a result,
all of the provisions of this standard
applying to a permit space apply, and
entry must be conducted in accordance
with the permit program requirements
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of § 1926.1204 and permitting
requirements of § 1926.1205. The fact
that the spaces addressed in
§ 1926.1203(g) were previously permit
spaces before reclassification as nonpermit spaces means that it is
imperative for the entry employer to
proceed with caution whenever a new
hazard emerges.
Section 1926.1203(h) and (i)—
Information Sharing and Coordination
Duties at Multi-Employer Worksites
The discussion of paragraphs (h) and
(i) has three parts:
(1) An overview of host employers
and controlling contractor
responsibilities;
(2) OSHA’s authority to require host
employers and controlling contractors to
share information to protect the
employees of others; and
(3) A paragraph-by-paragraph
explanation of § 1203(h) and (i).
(1) Overview of Host Employers and
Controlling Contractor Responsibilities
Timely information exchanges and
coordination of work activities can be
critical in safeguarding employees
performing confined-space work,
particularly on multi-employer
worksites where one employer’s actions
can affect the health and safety of
another employer’s employees. As
OSHA noted in its explanation of the
proposed rule, there are a number of
contractors and subcontractors
performing jobs on most construction
worksites, and there may be employees
of different employers performing work
within the same confined space. In
many instances, employees of one
subcontractor will enter a confined
space after another subcontractor’s
employees complete their work within
the space.
OSHA recognizes that both the
controlling contractor and the host
employer may have crucial information
about confined spaces at a construction
worksite. Therefore, in the proposed
standard, OSHA adopted the
information-sharing duties specified for
the host employer in the general
industry standard (§ 1910.146(c)(8)) and
proposed applying them to both the host
employer and the controlling contractor.
As one labor organization noted, based
on the experience of its members in
both general industry and construction
settings, worker safety is affected by
timely information sharing in both
general industry work and construction:
[T]he problem posed by contracting out
work in both situations is nonetheless the
same—how to ensure that subcontractors that
are in a work location for a limited period of
time have the best possible information to
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identify the location of confined spaces,
assess their hazards, and ensure that their
employees can perform their assigned duties
safely.
(220.2, pg. 10.)
The same commenter also explained
that information sharing may be even
more critical in the construction setting
because different workers may perform
many different activities in the same
space at different times, which can
result in hidden dangers:
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Many chemical substances used in the
construction industry, once in place, are
neither detectable nor hazardous until
exposed to a particular work process. For
example, surface coatings such as paints and
epoxies are seemingly stable—and are
generally undetectable through air
monitoring—once applied and dried.
However, these same substances may create
significant safety and health hazards to
employees who perform welding and other
processes involving heat while working in a
confined space. A contractor that performs
the routine assessment of physical and
atmospheric hazards required by the
standard would not necessarily identify these
potential hazards.
(ID–213.1, pg. 1.) Similarly,
polyurethane is often used for spray
foam insulation. When welding or
heating in a confined space is performed
near spray foam insulation that contains
polyurethanes, the heat could cause the
polyurethanes to break down and
produce hazardous fumes. A contractor
may not recognize this hazard during a
routine assessment of the space, and
would rely on information from a host
employer or controlling contract about
the potential hazard.
Hidden dangers may also arise while
working with equipment in confined
spaces. For example, operating internal
combustion engines, such as air
compressors, pressure washers, and
generators in a confined space could
lead to carbon monoxide exposure.
Because carbon monoxide is a colorless,
odorless gas, it is difficult to detect
without a monitor or testing equipment.
A host employer, controlling contractor,
or subsequent entry employer may not
realize that carbon monoxide levels in a
confined space have changed without
communicating with the employer who
operated the engine in the space.
Similarly, when working with live
circuits, an entry employer may
reenergize a once de-energized circuit to
perform work in a confined space.
Communication about reenergized
circuits will give the host employer,
controlling contractor, and any
subsequent entry employer’s indication
that conditions within the confined
space may have changed.
In this final rule, as in the proposed
rule, OSHA requires communication
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and coordination among controlling
contractors and subcontractors, and
between host employers and controlling
contractors. The coordination and
information-exchange duties in the final
rule are largely the same as the duties
required by the proposed rule, although
the final rule makes communication
with entry contractors the responsibility
of the controlling contractor rather than
the host employer, and does not contain
the proposed rule’s additional
requirements for identifying the
separate classifications of spaces. (See
proposed § 1926.1204.)
Based on the record as a whole,
OSHA finds that the informationsharing and coordination
responsibilities of host employers and
controlling contractors required by this
final standard are critical means of
identifying hidden or latent dangers in
permit spaces and for preventing the
actions of one employer from exposing
another’s employees to hazards in a
permit space. These provisions will
enhance the safety of workers in
confined spaces by ensuring that all
employers have the previously
identified information at their disposal
before entry to avoid hidden hazards
and to make adequate preparations to
protect employees entering permit
spaces.
The rule places controlling
contractors at the center of this process.
Before any employer enters a permit
space, the final rule requires controlling
contractors to obtain relevant
information about confined spaces on
the worksite from the host employer,
and then to relay that information, along
with any other relevant information, to
each contractor that will enter the
confined space or that will be
performing work that could foreseeably
result in a hazard within that confined
space. (See § 1926.1203(h)(1) and (h)(2).)
The controlling contractor is also
responsible for coordinating work in
and around confined spaces so that no
contractor working at the site will create
a hazard inside the confined space. (See
§ 1926.1203(h)(4).) After the entry
employer performs entry operations, the
controlling contractor must debrief the
entry employer to gather information
that the controlling contractor then must
share with the host employer and other
contractors who enter the space later.
(See § 1926.1203(h)(5).) Section
1926.1203(i) assigns the role of the
controlling contractor to a particular
employer in the event there is no
controlling contractor for the project.
Please see the discussion of
§ 1926.1203(i), below.
Some commenters expressed concern
that the final rule imposes a duty on
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controlling contractors or host
employers to verify the accuracy of the
information they receive from other
employers (ID–117, pg. 21; ID–078, pg.
1; ID–098, pg. 1). Consequently, one
commenter predicted that this duty
would cause controlling contractors and
host employers to spend too much time
and money overseeing their
subcontractors’ work (ID–120, pg. 2).
Two different commenters, however,
indicated that a controlling contractor
should have even more responsibility,
particularly when multiple employers
will be working in the same area. The
latter commenters argued that the
controlling contractor should ‘‘share in’’
the ‘‘responsibility’’ and costs of permit
space entries, including verifying the
training of subcontractor employees and
communications among employers,
particularly when multiple employers
enter and work in the permit spaces at
the same time (ID–108, pg. 4; ID–210,
pg. 60). One of these latter commenters
expressed concern that, without
controlling contractor verification,
‘‘untrained or unqualified persons
would be likely to enter the spaces
where a self-declaring system of
monitoring is employed’’ (ID–108, pg.
4).
The final rule does not require the
controlling contractor or host employer
to verify entry-employer information
(testing, monitoring, etc.) or to have its
own employees enter any confined
space or take other direct actions to
discover new information; requiring
controlling contractor employees to
enter permit spaces might increase
exposure of unqualified persons to the
hazards of permit spaces. Unless the
controlling or host employer allows its
own employees into a permit space, the
final rule only requires the controlling
contractor or host employer to share
information that is already in its
possession or that it receives from other
employers. OSHA agrees that it is
important to prevent untrained or
unqualified persons from entering the
space. The type of information that the
controlling contractor must share with
subcontractors, and that the host
employer must share with the
controlling contractor, is identical to the
type of information that the host
employer must share with contractors
under the general industry standard.
(See § 1910.146(c)(8).) Separately,
controlling contractors still have the
same duty they have always had to
exercise reasonable care to ensure
compliance with the requirements of
other applicable standards (e.g., welding
standard, respirator standard) in
accordance with OSHA’s multi-
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employer citation policy. The specific
communication and coordination
requirements imposed by this rule are
discussed in the paragraph-byparagraph explanation of § 1926.1203(h)
that follows the discussion of OSHA’s
authority for these requirements.
(2) OSHA’s Authority To Require Host
Employers and Controlling Contractors
To Share Information To Protect the
Employees of Others
Two commenters argued that OSHA
lacks the authority to impose any
requirements on host employers or
controlling contractors except with
respect to their own employees. (112.1,
p. 14–15; and 117.1, pg. 7–12.) One of
these commenters stated that a
‘‘controlling contractor . . . may not be
cited if it did not create a cited hazard
and it has no employees exposed to the
hazard,’’ explaining that the ‘‘legal
analysis supporting this point is set
forth well’’ in the Occupational Safety
and Health Review Commission
(OSHRC) decision in Secretary of Labor
v. Summit Contractors, Inc., 21 BNA
OSHC 2020 (No. 03–1622, 2007). (112.1,
p. 15.) OSHA notes that both the
reviewing federal court and the
Commission itself subsequently rejected
that view in Solis v. Summit
Contractors, Inc., 558 F.3d 815 (8th Cir.
2009) and Secretary of Labor v. Summit
Contractors, Inc., 23 BNA OSHC 1196,
1202–03 (No. 05–0839, 2010).
OSHA has clear authority to require
host employers and controlling
contractors to comply with the
information-sharing and coordination
provisions in the final rule. The
preamble to the proposed rule discussed
in detail OSHA’s authority to impose
the duties in this standard (see 72 FR
67358–67360, Nov. 28, 2007), and the
Agency reasserts the same basis with
respect to this final rule, along with the
2009 and 2010 Summit decisions. First,
the plain language of the OSH Act and
its underlying purpose support OSHA’s
authority to place requirements on
employers that are necessary to protect
the employees of others. As explained
later in this section of the preamble, the
overall sharing of information that will
occur in accordance with the final hostcontractor provisions will help protect
the employees of both host employers
and contract employers. Second,
congressional action subsequent to
passage of the OSH Act recognizes this
authority. Third, OSHA consistently
interprets its statutory authority as
permitting it to impose obligations on
employers that extend beyond their own
employees, as evidenced by the
numerous standards (including several
construction standards) that OSHA
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promulgated previously with
multiemployer provisions. OSHA
provided several examples of these
standards in the preamble to the
proposed rule, and OSHA subsequently
promulgated additional rules requiring
controlling entities and utilities to take
steps to protect other employers’
employees during crane operations. (See
29 CFR 1926.1402(c), 1926.1402(e),
1926.1407(e), 1926.1408(c), and
1926.1424(b).) Finally, numerous courts
of appeal and the OSHRC have upheld
OSHA’s authority to place obligations
on employers that reach beyond their
own employees. In addition to the
authorities listed in the preamble to the
proposed rule, the Third Circuit upheld
the information-sharing requirements in
the Asbestos Standard for the
construction industry, noting: ‘‘We are
not convinced that the Secretary is
powerless to regulate in this [way],
especially given the findings she has
made regarding the importance of
building owners in the discovery and
communication of asbestos hazards.’’
Secretary of Labor v. Trinity Indus., Inc.
(Trinity), 504 F.3d 397, 402 (3d Cir.
2007).
(3) Paragraph-by-Paragraph Explanation
of § 1926.1203(h) and (i)
Final § 1926.1203(h) is substantively
similar to the corresponding provision
for general industry confined spaces at
§ 1910.146(c)(8), but modified to
include requirements for controlling
contractors that were included in the
proposed rule. The type of information
that the controlling contractor must
share with entry contractors, and that
the host employer must share with the
controlling contractor, is identical to the
type of information that the host
employer must share with contractors
under the general industry standard.
The primary difference in this area
between this rule and the general
industry standard is that this rule makes
the controlling contractor the central
point of the information exchange,
while the host employer is the central
point in the general industry standard.
The final rule also structures the
requirements in chronological order to
make them easier to follow, setting out
the information sharing and
coordination duties prior to entry, and
then setting out the duties during and
after the entry. These requirements are
an efficient and necessary way to ensure
that all employers have important
information about the confined-space
hazards so each employer can provide
adequate protection to employees it
directs.
OSHA is designating the controlling
contractor, rather than the host
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25409
employer, as the information hub for
confined-spaces information-sharing
and coordination because the
controlling contractor’s function at a
construction site makes it better situated
than the host employer (assuming the
host employer is not also the controlling
contractor) to contribute to, and to
facilitate, a timely and accurate
information exchange among all
employers that have employees
involved in confined-space work.
General industry worksites, such as a
refinery or factory, are likely to be
stable, and owned and under the control
of the host employer for a substantial
length of time. The host employer is
well suited in that scenario to facilitate
information sharing because the host
employer is most likely to have control
of the site and information about it
before another employer performs
confined space work there. On a
construction worksite, the controlling
contractor has overall authority for the
site and is best situated to receive and
disseminate information about the
previous and current work performed
there. Evidence introduced at the
hearing indicated that the controlling
contractor communicates with entry
employers more frequently than the host
employer does (ID–210, pg. 315–320). In
contrast, the record shows that host
employers are not always directly
involved in the construction process
and, therefore, are often less well
situated than controlling contractors to
facilitate information-sharing (ID–220,
pg. 14–15).
The final rule is substantively similar
to the proposed rule, except that the
proposal would have required the host
employers to communicate directly with
entry employers. For the reasons
discussed in the prior paragraph, OSHA
assigned the controlling contractor that
function in this final rule, giving only
limited information-exchange
requirements to the host employer. In
the final rule, OSHA also clarified the
scope of the information exchanges by
requiring the controlling contractor to
coordinate and share information with
entities whose activities could
foreseeably result in a hazard in the
confined space, as opposed to all
contractors ‘‘near’’ the permit space.
Most other differences between these
requirements in the proposed rule and
the final rule are stylistic in nature and
intended to bring it closer to the text of
general industry rule.
In the following, more detailed
discussion, paragraph (h)(1) contains
the pre-entry duties of host employers,
(h)(2) the pre-entry duties of controlling
employers, and (h)(3) the pre-entry
duties of entry employers. Paragraph
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(h)(4) then describes the coordinating
responsibilities of controlling and entry
employers, and (h)(5) explains their
duties during and after entry. Finally,
paragraph (i) explains requirements
when there is no controlling employer.
Paragraph (h)(1)—Pre-entry duties of
host employer. The host employer
serves an important role in providing
information because the host employer
is likely to be the employer most
familiar with the property and the most
likely to retain, between separate
construction projects, information about
permit spaces on the property,
particularly in construction involving
existing facilities. (ID–141, pg. 3.) As a
result, the host employer may have
information about hidden dangers or
other information that can help reduce
employee exposure to hazards in permit
spaces.
Final § 1926.1203(h)(1) requires the
host employer to share information it
has about the location of known permit
spaces, and any previous steps that it
took, or that other employers took, to
protect workers from the hazards in
those spaces. Telling other employers
about each known permit space on the
worksite is essential to achieving the
purpose of the information-exchange
requirements, which is to ensure that
contractors with employees entering
confined-spaces are aware of the type
and degree of these hazards and can
take necessary safety precautions.
Having information about the
previously identified hazards in a space,
and the previous efforts to address
them, will assist the entry employer in
ascertaining if those hazards still exist,
and help the entry employer avoid
problems addressing the hazards that
previous entry employers encountered.
Final paragraph (h)(1) is similar to the
corresponding provision for general
industry confined spaces and to
proposed § 1926.1204(a), although the
host employer must share the
information with the controlling
contractor instead of the entrants. The
controlling contractor then shares it
with the entry employers. OSHA did not
receive any comments specifically
opposing the inclusion of this
information in the informationexchange requirements.
The proposed rule provided that host
employers had to share the information
about known hazards only ‘‘if they have
it,’’ and to identify confined spaces
when the host employer or controlling
contractor ‘‘actually knows’’ that they
are confined spaces. (See 72 FR 67407.)
The purpose of including these phrases
in the proposed rule was to clarify that
the controlling contractor and host
employer need not engage in extensive
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and burdensome investigations of the
history of the worksite, and, most
importantly, that these employers ‘‘are
not required to enter a confined space
to collect the relevant information.’’
(See 72 FR 47933.) OSHA is retaining
the same approach in the final rule, but
refers to ‘‘known’’ permit spaces instead
of the more awkward ‘‘space that the
host actually knows is a confined
space.’’ The final rule also narrows the
requirement by focusing specifically on
known permit spaces, rather than to all
confined spaces, because these spaces
pose the greatest hazards to employees.
Narrowing the requirement also reduces
the number of information exchanges
and matches the type of information
that the host employer must share,
which is linked to the nature of the
space as a permit space, i.e., information
about the hazards that make the space
a permit space, and the previous efforts
to address those hazards. This narrowed
approach will appropriately focus the
exchanges on those spaces with known
hazards. In the event that an employer
is both a host employer and the
controlling contractor, the employer has
the information that complies with the
provisions of final § 1926.1203(h)(1),
(h)(2), (h)(4), and (h)(5).
For example, a host employer hires a
controlling contractor to build an
underground storage facility and
discovers during that process that there
is an underground stream below the
property. Years later the host employer
hires a different controlling contractor
to expand the underground storage
facility in a manner that will include
several confined spaces. In this
example, the host employer must share
the plans for the existing storage facility
and identify the location of the
underground stream so that the
controlling contractor and the relevant
subcontractors can develop a permitspace program appropriate to address
potential engulfment hazards. The host
employer also would be responsible for
disclosing the storage of any potentially
hazardous chemicals or other
substances in the existing storage
facility. However, the final rule would
not require the host employer to drill for
additional undiscovered underground
rivers, conduct soil tests, or test the air
in the existing storage facilities.
Paragraph (h)(2)—Pre-entry
information-sharing duties of
controlling contractors. In paragraph
(h)(2), OSHA requires controlling
contractors to obtain the information
specified in paragraph (h)(1) from the
host employer (i.e., the location of
permit spaces, the known hazards in
those spaces, measures employed
previously to protect employees in that
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space). Then, before permit space entry,
it must relay that information to any
entity entering the permit space and to
any entity whose activities could
foreseeably result in a hazard in the
confined space. (See
§ 1926.1203(h)(2)(ii).) The controlling
contractor must also share any other
information that it has gathered about
the permit space, such as information
received from prior entrants.
The final rule varies slightly from the
proposal in requiring controlling
contractors to share the information
with any ‘‘entity,’’ rather than other
contractors or employers, to ensure that
the controlling contractors also share
this information with independent
contractors who are not ‘‘employers’’
under the OSH Act. These contractors
pose the same issues as do employers
when working in or around permit
spaces, i.e., they may increase hazards
for others working in or around the
space if they do not comply with the
provisions of this standard. OSHA
concludes that it is equally important
for controlling contractors to pass along
information about permit space hazards
to independent contractors, and to
coordinate their activities as required in
this standard. Although OSHA is not
directly requiring independent
contractors to share information in
accordance with the standard, OSHA
expects that controlling contractors will
be able to obtain the necessary
information as a result of their control
over the worksite.
OSHA requires the controlling
contractor to obtain the information
from the host employer before entry
operations begin so that the controlling
contractor can share the information
with the entities specified in
§ 1926.1203(h)(2)(ii) in time to minimize
potential employee exposure to hazards
in the confined spaces. This provision
was not in the proposal; the proposal
required both the host employer and
controlling contractor to share
information directly with the entry
employer. (See proposed
§ 1926.1204(a).) OSHA added this
provision to the final rule to conform to
the final rule requirement that the host
employer share information with the
controlling contractor rather than the
entry employer. The final standard
makes it explicit that the controlling
contractor and host employer have
separate duties with respect to the same
information: the controlling contractor
must obtain it under final
§ 1926.1203(h)(2)(i) and the host
employer must share it under final
§ 1926.1203(h)(1).
These complementary duties also
address the concerns of some
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commenters that host employers are
often state or local government entities
not subject to the OSH Act. (ID–78, p.
2; ID–141, pg. 3.) The commenters
expressed concern that it might be
difficult for the controlling contractor to
obtain the information from a
government entity not subject to
§ 1926.1203(h)(1), and that the host’s
failure to provide the information could
subject the controlling contractor to
heightened liability. In such cases,
OSHA expects the controlling contractor
to exercise due diligence in attempting
to obtain the information from the host
employer, and believes that most hosts
will provide it when the controlling
contractor explains that it needs the
information in order to perform the job
safely and in accord with law.
Final § 1926.1203(h)(2) is similar to
the corresponding provisions for general
industry confined spaces with a few
distinctions. General industry
§ 1910.146(c)(8)(i) requires the host
employer to share the specified
information with ‘‘the contractor.’’ This
final rule requires an exchange of the
same information, but § 1926.1203(h)(2)
requires the controlling contractor to
exchange that information with both the
entity entering the permit space and
with other contractors working around
the permit space.
The general industry rule requires the
host employer to inform other
employers that they can conduct permitspace entry only by complying with a
permit-space program meeting the
requirements of the standard (see
§ 1910.146(c)(8)(i)). There was no
specific parallel in the proposed
construction rule. This final rule also
does not contain a specific parallel
requirement because the entry
employer’s duty to use a valid permit
program is explicit in § 1926.1203(d).
OSHA has clarified the requirements
for communication with entities whose
activities outside a confined space may
affect workers inside the space. Many
commenters found the terminology of
the general industry rule (referring to
work ‘‘in or near permit spaces’’ in
§ 1910.146(c)(8)(iii)) and the proposed
rule (referring to ‘‘employers’’ in
proposed § 1926.1209(b)(3).) confusing
in the context of a construction
worksite.16 Therefore in this final rule,
OSHA refines this requirement by
requiring the controlling contractor to
provide the information to other entities
on the worksite when the activities of
these other entities could foreseeably
result in a hazard within the confined
space. This information-exchange
16 For a discussion of the term ‘‘near’’ see the
overview of § 1926.1205 in this preamble.
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requirement also is similar to the
information-exchange requirement in
§ 1926.65(b)(1)(iv) (Hazardous waste
operations and emergency response).
Both rules require employers to inform
contractors and subcontractors about
hazards of the work the contractor will
be performing, including hazards of the
worksite.
OSHA designed this requirement to
protect authorized entrants and others
who are part of the permit-space entry
process (e.g., the attendant) from a wide
variety of potential activities, including
those that may be beyond the scope of
the permitting process. Therefore, the
information-exchange requirement
applies to activities outside the permit
space that could foreseeably result in a
hazard within the permit space, either
alone or in conjunction with the
activities inside the space. Examples
include use of a heavy gas that could
enter the space and cause oxygen
deficiency or sparks from a welding
operation outside the space that could
ignite flammable gas inside a confined
space. To prevent the creation of
confined-space hazards, final
§ 1926.1203(h)(4) supplements this
requirement by requiring the controlling
contractor to coordinate the activities of
entities either entering the permit space
or engaged in actions that could
foreseeably result in a hazard within the
space.
Paragraph (h)(2)(i). As noted above,
final § 1926.1203(h)(2)(i) requires the
controlling contractor to obtain from the
host employer, before permit-space
entry, the host’s information regarding
permit-space hazards and previous
entry operations. OSHA included this
provision in the final rule as part of the
change to limit the host employer’s
involvement in the informationexchange process, and to centralize the
role of the controlling contractor. The
controlling contractor needs this
information for dissemination to entities
entering permit spaces (final
§ 1926.1203(h)(2)(ii)), and to fulfill its
duty to coordinate permit-entry
activities with other work occurring in
and around the permit space (see final
§ 1926.1203(h)(4)).
Paragraph (h)(2)(ii). The final rule
requires the controlling contractor to
pass along the information it received
from the host employer about the permit
spaces on the worksite. The controlling
contractor is at the hub of the
information exchanges in the final rule,
so this step is critical to ensuring that
the host employer’s information reaches
the entities entering the permit space
and others whose work may create
hazards inside the permit space. The
parallel provision of the proposed rule,
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25411
§ 1926.1204(a)(1), was potentially
duplicative and ambiguous because it
required the controlling contractor and
host employer to provide the same
information to the same entities.
Final § 1926.1203(h)(2)(ii)(A) and (B)
require the controlling contractor to
share with the entities entering the
permit space, and any other entity at the
worksite whose activities could
foreseeably result in a hazard in the
permit space, the information that the
controlling contractor received from the
host employer, as well as any additional
information the controlling contractor
has about the topics listed in paragraphs
(h)(1)(i) through (iii) (i.e., the location of
permit spaces, the hazards in those
spaces, and any previous efforts to
address those hazards). These
paragraphs are substantively similar to
the general industry requirements at
§ 1910.146(c)(8)(ii) and (iii). Having
information about the previously
identified hazards in a space will help
the entry employer ascertain whether
those hazards still exist.
For employers or other entities whose
activities could foreseeably result in a
hazard in the confined space, this
information will improve their ability to
assess whether those activities will
create such a hazard, to avoid creating
the hazard or to minimize any hazard
they create, to prevent their employees’
unauthorized entry into a permit space,
and to help them prepare for
coordination of their activities under
final § 1926.1203(h)(4).
Final § 1926.1203(h)(2)(ii)(C) is
similar to the general industry standard
at § 1910.146(c)(8)(iii) in that it requires
the controlling contractor to share with
each specified entity any precautions or
procedures that the host employer,
controlling contractor, or any entry
employer implemented earlier for the
protection of employees working in
permit spaces. This provision also is
similar to the proposed standard at
§ 1926.1204(a)(2)(iii). This final
provision requires the controlling
contractor to notify the specified entity
of the procedures currently used, or
previously used, at the permit space,
thereby alerting each new entering
entity to information that it can use to
improve its entry plans and permit
program. This provision does not
require the controlling contractor to
develop entry programs for its
contractors.
One commenter urged OSHA to alter
the information-exchange requirements
in proposed § 1926.1204(a) by requiring
the controlling contractor to share all
information about precautions or
procedures implemented by any
employer within a given permit space,
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required confined space. The welder sets up
a ventilation system that complies with all
applicable OSHA requirements. The
controlling contractor also hires a different
subcontractor to perform unrelated
excavation work 75 yards away from the
permit space. The controlling contractor
must alert the excavation contractor to the
fact that a welder is working in the confined
space, that the space has been designated a
permit space and must not be entered by any
of the excavation contractor’s employees, and
that the welder is relying on a ventilation
system that must not be impacted by the
excavation contractor’s activities, such as by
blocking the ventilation system or by
operating heavy machinery, generators, etc.
in such a way that their fumes could enter
the confined space. In this example it is
foreseeable that the excavator might
otherwise place dirt from the excavation (the
‘‘spoil pile’’) in a location that could interfere
with the welder’s ventilation system, or add
fumes into the confined space. Either action
would foreseeably result in a hazard in the
permit space. However, absent some other
abnormal condition such as an underground
gas pipeline running between the excavation
site and the permit space, the controlling
contractor would not need to ensure any
coordination between the excavating
activities and the welding activities because
the excavation itself (aside from the
placement of the spoil pile) is 75 yards away
and would not foreseeably result in a hazard
in the permit space.
Examples of Pre-Entry InformationExchange Duties of Host Employers and
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not merely the precautions and
procedures the host employer or
controlling contractor implemented for
that space (ID–220, pg. 16). OSHA
agrees, and the final rule requires
controlling contractors to share this
information because it is likely to be
helpful to subsequent entry employers
as they assess the spaces and develop
their own procedures. This information
may also reduce the amount of time it
takes subsequent entry employers to
develop their own entry procedures.
The controlling contractor’s experience
with a permit space includes
information gathered from other entry
employers and other sources; the
controlling contractor will share this
information with subsequent entry
employers. If the information about
previous procedures came from an entry
employer who worked on projects
before the controlling contractor became
involved, then the controlling contractor
would obtain that information from the
host employer. If the previous
procedures came from an entry
employer who worked under the
controlling contractor, then the
controlling contractor would have
obtained the information pursuant to
other provisions of this rule.
In example 1, the entry employer
might not be aware of the hazard from
the pooling water or of other hazards
that could arise from the activities of
others outside the site in conjunction
with the pooling water. In examples 2
and 3, both types of information could
be critical to employers performing
subsequent welding or other tasks that
might ignite remaining fumes or release
vapors inadvertently.
These information exchanges, in
combination with separate OSHA
requirements that entry employers share
specific information about the permit
spaces with controlling contractors, will
ensure that each ‘‘downstream’’
employer (the employer performing the
permit-space entry) receives important
information about the relevant permit
space in time to address hazards that
could endanger employees it directs.
One commenter questioned whether
the information duties would apply to
all information—both written and oral—
the host employer or controlling
contractor may receive, rather than
merely information that is readily
available (ID–153, pg. 18). The
obligations in this final rule apply to all
information, including both written and
oral information the host employer or
controlling contractor receives about
hazards or potential hazards in a permit
space. It is the responsibility of the host
employer and controlling contractor to
Example 1. A controlling contractor is
walking the worksite and notices a
significant amount of water pooling so that
it might enter an underground permit space.
The controlling contractor must alert the
subcontractor working in that space of the
potential for water entering the space or
weakening the structure, and must also
inform other entities in the area whose
activities could foreseeably result in a hazard
inside the confined space (e.g., entities
whose activities may be contributing to the
pooling water, may convey an electric charge
through the water into the confined space, or
may weaken the structure around the
confined space to allow the water to enter the
space).
Example 2. The controlling contractor
hires a subcontractor to apply a flammable
epoxy coating to the walls of a confined
space; the subcontractor does so under a
permit program, and then cancels the permit
in compliance with this final rule. The
controlling contractor must inform
subsequent employers entering the space
about the application of that epoxy and the
procedures used to address hazards in the
space.
Example 3. If a host employer stored
hazardous chemicals in a confined space
during a period when leaching of the
chemicals could occur, the host employer
must disclose that previous use of the space.
Example 4. The controlling contractor
hires a welder to weld a new structure inside
a fully-enclosed above-ground permit-
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retain this information, which protects
employees who are performing permitspace work, and to communicate this
information to entry employers and the
others identified in the standard.
A different commenter asserted that
employers will have difficulty managing
and recording the information they are
required to communicate (ID–078, pg.
2). However, the record indicates that
many construction employers already
are following the general industry
confined spaces standard, which
requires host employers to share similar
information (see § 1910.146(c)(8)(ii) and
(c)(8)(iii)). This final rule also does not
prescribe how employers are to gather,
record, or maintain this information.
This commenter urged OSHA to provide
a database of relevant information that
all employers could access; however,
such an action is beyond the scope of
this rulemaking.
The National Association of Home
Builders asserted that the informationexchange requirements would not be
beneficial in the context of residential
construction because conditions change
too rapidly (making it likely that the
information will be inaccurate when
exchanged), and that the ‘‘small
likelihood that the provision would ever
be of any use to employee safety’’
should not outweigh the ‘‘burden of
compliance’’ in residential construction
(ID–117, pg. 20). This comment misses
the point: this is an important safety
issue because the information exchange
protects workers from exposure to
harmful conditions. The rapidly
changing confined-space conditions on
residential construction sites is a major
reason OSHA is requiring these
information exchanges. Moreover, only
the presence of a permit-required
confined space triggers the informationsharing requirements, and every entry
into a permit-required confined space,
by definition, exposes the entrants to a
hazardous atmosphere or other serious
hazard absent the measures
implemented through the permit
program. The commenter offers no
support for the assertion that sharing
information to help entry employers
identify these hazards as quickly as
possible, and before employee exposure
occurs, would not be of ‘‘any use to
employee safety.’’ In light of the record
as a whole, OSHA believes that there
will be an important safety benefit, and,
therefore, does not find the commenter’s
argument persuasive.
The same commenter offers another
reason for objecting to the informationsharing requirement: On large
commercial construction projects, it is
common to exchange information at the
start of the project, but this information
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may be incomplete or partial (ID–117,
pg. 20). In some cases, as construction
progresses, the controlling contractor
obtains more information as it becomes
available. Consequently, this commenter
asserted that the controlling contractor
or host employer will exchange
information with the entry contractor in
a piecemeal fashion unless OSHA
requires the entry employer to request
all of the information available (See also
ID–219.2, pg. 37 (marked as pg. 34)).
The commenter’s suggested approach to
avoiding piecemeal information
exchanges is to have the controlling
contractor or host employer withhold
relevant information if the contractor
does not request it. This approach is
contrary to the purpose of this
paragraph: To ensure that employers
have as much information as possible,
and in a timely manner, when preparing
to work safely in a confined space.
Subcontractors are not likely to be
aware of hidden dangers, and are,
therefore, unlikely to request
information about them. To protect their
employees working inside a confined
space, subcontractors would likely
submit a pro forma request for
information to the controlling contractor
and host when they initially begin work
at any site, but it is not clear that such
a process would be substantively
different from the approach specified in
this final rule, except that it would be
involve an extra step.
In any event, OSHA has specified
when the controlling contractor must
share the information: ‘‘before entry
operations begin.’’ The controlling
contractor must share the information
obtained from the host employer, and
any other information that the
controlling contractor gathered from
other sources (e.g., previous entries into
the same space as part of the same
construction project), with the entry
employer before entry. If such permitspace work is to occur near the
midpoint of a project, a single
conversation shortly before the
evaluation and entry may fulfill the
requirements of the final rule. There is
no reason the controlling contractor
cannot send all of the information at
once rather than sending updated
information in a piecemeal fashion as
the commenter noted, as long as the
information is shared with the entry
employer prior to entry. The key parts
of the provision are that the controlling
contractor remains informed, and
ensures that the information is
conveyed to the entrants. Therefore,
employers involved in permit-space
entry on construction worksites have
flexibility to decide the manner in
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which to exchange this information
(e.g., whether orally or in writing,
whether the entry employer or
controlling contractor initiates the
exchange); however, they all have a
duty to ensure that they share the
information.
Paragraph (h)(3)—Pre-entry
information-sharing duties of entry
employers.
This provision, which sets forth the
information-exchange requirements for
entry employers, is similar to the
proposed provision and to the
corresponding provision for general
industry confined spaces standard at
§ 1910.146(c)(9), although it uses
slightly different terminology. Here,
OSHA uses the term ‘‘entry employer’’
to clarify that the paragraph applies to
employers who perform permit-space
entry operations. And as in the rest of
this section, the controlling contractor,
rather than the host employer, is the
focal point of the information exchange.
OSHA believes that these requirements
will contribute significantly to the
increased safety and health of the
employees of entry employers involved
in permit-space entry operations.
Paragraph (h)(3)(i). This provision
requires an entry employer to obtain
information about the permit-space
entry operations from the controlling
contractor, and works with final
§ 1926.1203(h)(2), which requires the
controlling contractor to share
information about permit-space entry
operations with the entry employer.
OSHA believes that the reciprocal
obligations in this final rule, which are
consistent with the general industry
standard, will increase the effectiveness
of the information exchange by placing
the duty to share this information on
both parties. Both employers will now
have the duty to exchange information,
although they will likely accomplish
their duties in a single interaction. The
information exchange will ensure that
the entry employer understands the type
of space it will be evaluating, and will
allow it to anticipate the permit-space
hazards that may be present during
entry.
Paragraph (h)(3)(ii). The final rule
requires an entry employer to inform the
controlling contractor of the permitspace program that the entry employer
will follow, including information about
any hazards likely to be confronted or
created in each permit space. This
exchange must take place prior to entry
to ensure that the controlling contractor
is informed of all the hazards in a timely
manner and can take action, if needed,
to prevent an accident or injury before
entry operations begin. OSHA expects
this exchange to occur after the
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25413
employer has completed its assessment
of the permit space, which is generally
necessary to identify the hazards in the
space and ensure that a proper permitspace program is selected. Consistent
with the approach in the proposed rule,
separating this pre-entry exchange from
the subsequent entry report required by
§ 1926.1203(h)(5)(ii) clarifies that these
two information exchanges must take
place at two distinct stages of permitentry operations.
One commenter objected to the
proposed requirement that the entry
employer inform both the controlling
contractor and host employer of the
procedures the entry employer planned
to use in the permit space. The
commenter asserted that the proposed
provision was ‘‘an unnecessary burden
[that] in some cases may be infeasible’’
(ID–124, pg. 6). This final rule
eliminates the requirement that the
entry employer share this information
with the host employer, eliminating any
difficulties an entry employer may have
communicating with a host employer,
and is consistent with the rule’s overall
designation of the controlling contractor
as the focal point of the informationexchange process. As explained
elsewhere, the controlling contractor
needs this information to coordinate
entry as necessary, and the exchange
provides the controlling contractor with
another opportunity to inform the entry
employer about the hazards of the
permit space as required by
§ 1926.1203(h)(2).
Paragraph (h)(4)—Coordination duties
of controlling contractors and entry
employers. Final § 1926.1203(h)(4)
requires controlling contractors and
entry employers to coordinate permitspace entry operations in two
circumstances: (1) When more than one
entity performs entry operations at the
same time, or (2) when permit-space
entry is performed at the same time any
activities that could foreseeably result in
a hazard in the permit space are
performed. The controlling contractor
and each entry employer have separate
duties under this provision, and each
can be cited for failing to perform its
part of the coordination. Similar
obligations were included in the
proposal, but were not stated as clearly
as they are here, and also are present in
the general industry standard. Minor
differences between this final rule and
the general industry and proposed rules
are matters of terminology or reflect the
key role of the controlling contractor in
this construction rule.
There is a need to coordinate entry
operations whenever multiple entities
are performing work simultaneously in
or around a permit-space because of the
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possibility that one entity’s activity
might create a hazard for workers
employed by a different entity (e.g.,
welding next to the application of a
flammable coating). The purpose of this
provision is to protect employees from
foreseeable hazards that could result
from a lack of coordination between
entry entities in the permit space, or
with entities outside the space whose
activities could create hazards inside
the permit space. This paragraph works
in concert with the requirement that
entry employers inform the controlling
contractor of the permit-space program
that the employer will use and the
hazards they are likely to encounter in
the space, including hazards created
after entry. The controlling contractor
can use this information to coordinate
the entry operations to ensure safety for
all workers in the space.
It is important for the controlling
contractor to participate in each
coordination effort because construction
worksites are constantly evolving, with
multiple employers performing work.
Consequently, the controlling
contractor, as the employer with overall
responsibility on the worksite, is in the
best position to coordinate the entry
operations. This provision also requires
the entry employer to coordinate entry
with the controlling contractor because
it is the entry employer who evaluates
a confined space, who will have
employees it directs entering the space,
and who may have the most current
information about the space.
For example, a properly informed
controlling contractor will be aware of
excavation work on a site directly above
an underground permit space, and will
coordinate work to ensure that no
employees are in the permit space when
the excavation work could foreseeably
cause part of the underground space to
collapse. Similarly, the controlling
contractor must ensure that, when an
employer is using a crane in the vicinity
of a permit space, lifts are planned and
implemented so that the crane would
not be carrying its load over an
occupied permit space or its entry/exit.
In those scenarios, the entry employer
would be responsible for informing the
controlling contractor when it plans to
have employees inside the permit space.
Coordination would typically involve
the controlling contractor scheduling
the activities appropriately, working
with all of the employers involved to
ensure that they adhere to the schedule,
implementing a plan to remove the
employees from the permit space at the
appropriate times, and designating
locations to keep the employees clear of
the load during the lifting operation.
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This coordination requirement
responds to a concern that proposed
§ 1926.1204(d) did not account for the
fact that work taking place near a permit
space can create hazards that could
harm other employers’ employees inside
the space (ID–210, pg. 317–18). The
commenter raising this concern
provided an example of an employer
that uses gas that is heavier than air near
a confined space; such a gas could
create an atmospheric hazard in the
space by displacing oxygen.
OSHA agrees with this comment and
the final standard requires the type of
coordination that will address this
concern. It specifically requires the
controlling contractor to coordinate
entry operations of any entities whose
activities could foreseeably result in a
hazard in the confined space. This
requirement is consistent with the
requirements of final §§ 1926.1204(k)
and 1926.1210(f). Final § 1926.1204(k)
requires an entry employer to account
for such coordination as part of its
permit program, while final
§ 1926.1210(f) requires the entry
supervisor to determine, on transferring
responsibility for permit operations, that
entry operations remain consistent with
the terms of the entry permit and that
entry conditions are acceptable.
Other commenters objected that
controlling contractors are not in the
best position to coordinate because they
often are not on the site to provide
coordination, do not have the
knowledge or experience to correctly
identify the hazards of a permit space,
and may not know of the planned entry
(ID–117, pg. 21; ID–075, pg. 6). These
commenters also argued that if the final
standard requires coordination, such
coordination should be between the
involved host employer and entry
employer(s), as is the case under the
general industry standard (ID–117, pg.
22; ID–075, pg. 6).
OSHA disagrees with these
comments. An employer that meets the
standard’s definition of controlling
contractor has ‘‘overall responsibility for
construction at the worksite.’’ As noted
earlier, other commenters agreed that
controlling contractors were better
suited than host employers to serve at
the center of this process in
construction activities. (ID–210, pg.
315–20; ID–220.2, pg. 14–15). By virtue
of their responsibility for the entire
worksite, controlling contractors
schedule and coordinate activities
among different subcontractors to
ensure that they perform construction
tasks in the correct sequence, in the
proper manner, and with minimal delay
between the steps on a project. The
vague hypothetical scenarios presented
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by the commenters do not persuade the
Agency that the coordination required
by this final rule is a significant
departure from the type of coordination
required on a regular basis under
existing work practices. Accordingly,
OSHA concludes that controlling
contractors, as the entities actually
managing construction activities at a
worksite, are better able than host
employers to coordinate the activities of
the other employers whose employees
work in or around a permit space.
Coordination of entry operations under
final § 1926.1203(h)(4) is a critical
component of this standard.
Nevertheless, OSHA has structured
the coordination provision in the final
rule to minimize additional
responsibilities and provide appropriate
flexibility for controlling contractors. If
the controlling contractor’s employees
will not enter the permit space, the
controlling contractor may fulfill its
coordination duty by relying on
information provided by entry
employers. The controlling contractor
does not necessarily have to be on the
site at all times or have expertise on
permit space hazards to coordinate
entry operations, just as the controlling
contractor does not need to be on site
at all times to coordinate material
deliveries or subcontractor assignments.
In addition, the final rule does not
specify how the controlling contractor
and entry employers must coordinate
entry operations. Controlling contractors
and entry employers may coordinate
entry operations using any method that
is effective, and this coordination need
not involve a lengthy process.
One commenter expressed a concern
that the coordination requirements
would impose strict liability on
controlling contractors for safe permitspace entry operations, meaning that the
controlling contractor would be liable
for another employer’s breach of safety
policy (ID–141, pg. 2). The final rule
does not impose strict liability or any
responsibility to ensure other
contractors’ compliance with the
standard. Controlling contractors who
are not entry employers have
information sharing and coordination
duties.
Another commenter asserted that, in
an effort to comply with this
coordination duty, the controlling
contractor may impose redundant and
unnecessary safety measures on other
employers to protect the controlling
contractor from liability (ID–120, pg. 2).
This comment is speculative and
unsupported by specific examples, so it
is difficult for the Agency to respond to
it other than to note that the final rule
does not impose duplicative
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requirements on employers, nor does
the final rule require the controlling
contractor to do so. OSHA believes that
the final rule provides employers with
sufficient flexibility in discharging their
coordination duties. This flexibility
should reduce duplication of effort and
any associated costs.
Lastly, this commenter asserted that it
would be difficult for a controlling
contractor to fulfill the coordination
duties absent explicit contractual
authority to do so. Id. But under this
final rule, controlling contractors are the
only employers at a worksite that ‘‘have
overall responsibility’’ for the site, so
they are in the best position to
coordinate the work schedule. If
controlling contractors prefer to
augment their authority through
contractual provisions with
subcontractors or host employers, this
final rule does not prevent them from
doing so.
Paragraph (h)(5)—Post-entry duties of
controlling contractors and entry
employers. This paragraph, which
imposes obligations similar to those in
the general industry standard, requires
the controlling contractor to debrief an
entry employer at the end of entry
operations about the permit-space
program followed and any hazards
confronted or created during entry
operations, and then relay appropriate
information to the host employer. It also
requires the entry employer to share the
same information with the controlling
contractor. These requirements serve
three purposes. First, they ensure that
the controlling contractor requests the
information. Second, they establish an
affirmative duty for the entry employer
to provide this information. Third, they
ensure that the host employer will
receive information relevant to future
permit-space entries. The intent is for
entry employers to identify and share
information about additional hazards,
new procedures, or other new
information not previously identified in
the required pre-entry information
exchange.
OSHA believes it is appropriate to
place the duty on the entry employer to
provide this information, as well as to
require the controlling contractor to
request it. The entry employer, by virtue
of performing permit-space entry
operations, will be the first employer to
have access to new information. If the
entry employer fails to communicate the
information to the controlling contractor
during the course of entry operations,
the information transfer will occur
during the entry employer debriefing.
There were no comments indicating
the debriefing is unworkable or overly
burdensome. OSHA made this duty
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reciprocal in the final rule, and removed
the duty for the entry employer to
provide information to the host
employer to keep the rule internally
consistent and consistent with the
general industry standard, and to
increase the effectiveness of the
information exchange by placing the
duty to share this information on both
parties to the exchange, thereby
ensuring that both the controlling
contractor and entry supervisor
exchange the specified information.
Accordingly, § 1926.1203(h)(5)(i)
requires the controlling contractor to
retrieve the information, and
§ 1926.1203(h)(5)(ii) requires the entry
employer to provide the information.
OSHA does not view this as a
significant change from the proposed
rule because the proposal also required
the same debriefing to occur, and it
required the parties to share the same
information (see proposed rule
§ 1926.1204(c)(2)). If no new hazards
arose during entry and the entry
employer’s program did not change, the
information exchange can be brief, just
confirming that the original program
was followed.
The final rule contains a new
requirement for the controlling
contractor to notify the host employer of
any information it receives from
debriefing the entry employer. OSHA
added this provision to close a potential
gap in the information-exchange process
that could result because the final rule
makes the controlling employer the hub
of the information and exchange and
does not require entry employers to
provide information directly to the host
employers, as the proposed rule did (see
proposed rule § 1926.1204(c)(2)). As
discussed above, OSHA has determined
that the controlling contractor is in the
best position to coordinate the exchange
of this information. Therefore, the final
rule shifts the duty to the controlling
contractor. The host employer will still
receive the information, but from the
controlling contractor. OSHA expects
that in many cases there will be no need
for a separate exchange because the
controlling contractor can relay this
information as part of its regular
communications with the host
employer.
One commenter objected to the
debriefing requirement, stating that it
was unnecessary if other employers
were not already scheduled to enter the
space. If another employer does
eventually enter the space, the
commenter asserted, the subsequent
employer’s independent hazard
assessment should suffice (ID–124, pg.
6). OSHA disagrees. The subsequent
employer must make an independent
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25415
hazard assessment, but the rationale for
requiring information exchanges in the
final rule still applies: that assessment
may not reveal previously identified
hidden or latent dangers or conditions,
and the new entry employer would be
less prepared to protect its employees
than if it obtained the information that
the controlling contractor received from
debriefing the previous entrant.
A different commenter asserted that
host employers have no need for
information about newly constructed
confined spaces, and that the
requirement to provide information to
the host employer is an unnecessary
paperwork burden (ID–017, pg. 2).
OSHA disagrees. It is important for the
controlling contractor to notify the host
employer of information about the
host’s property, particularly any new
hazards identified during the entry. In
many cases, the same controlling
contractor may not be present for future
construction activities involving the
space, so the host employer’s
information will helpful for future
entries.
Note to § 1926.1203(h)—host employer and
controlling contractor not required to enter
a confined space. The final standard also
includes the note from proposed
§ 1926.1204(a) explaining that, unless a
controlling contractor or host employer has,
or will have, employees in a confined space,
neither of these employers need to enter any
confined space to collect the information
specified in paragraph (h) of this section.
This note applies to all of paragraph (h). This
protects the employees of the controlling
contractor and the host employer because
entering confined spaces could expose those
employees unnecessarily to the hazards of
that space. Controlling contractors and host
employers should not conduct such an entry
unless there is a purpose to the entry other
than just gathering information.
Paragraph (i)—Absence of a
controlling contractor. Final
§ 1926.1203(i) provides that, in the
event no employer meets the definition
of a controlling contractor on a
particular worksite, the host employer
or other employer that arranges for
permit-space entry work must fulfill the
information-exchange and coordination
duties of a controlling contractor. The
general industry rule does not have any
requirements for a controlling contractor
and, therefore, has no corresponding
provision dealing with the absence of a
controlling contractor. OSHA added this
requirement in response to a comment
noting that some construction worksites
do not have an employer that meets the
definition of a controlling contractor
(ID–124, pg. 6). Because the controlling
contractor is at the hub of the
information-exchange and coordination
requirements, failing to address this
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issue would leave a serious gap in a
critical provision of the standard. When
no employer on a worksite meets the
definition of controlling contractor, it is
still necessary for one employer to be
responsible for information exchange
and coordination, thereby ensuring that
entry employers are aware of the known
hazards associated with the space, and
that different entities do not create new
hazards to each other.
The employer that has the duty
specified under final § 1926.1203(i) can
be any employer that arranges for
permit-space entry. It could be the host
employer, a different contractor, or an
entry employer that arranges for another
entry employer to conduct entry
operations. It is possible that the
employer that has this duty will change
based on the stage of construction. For
example, if there is no controlling
contractor for the project, but a
contractor on the site arranges for entry
employer A to enter a permit space, the
final rule requires the contractor to
share the information identified in final
§ 1926.1203(h) with entry employer A
and to fulfill the controlling contractor’s
coordination and other information
sharing duties in the standard. If entry
employer A, after completing its entry
operations and cancelling its permit,
arranges for entry employer B to enter
the permit space, then entry employer A
assumes the controlling contractor
duties with respect to entry employer
B’s confined space activities.
Requirements in § 1926.1203(h) and
(i) do not alter contractual relationships
between host employers or controlling
contractors and subcontractors. One
commenter noted that subcontractors
often perform confined-space work
because of their expertise in working in
those spaces, and asserted that OSHA
should not ‘‘force general contractors to
interject themselves into the work tasks
of their sub-contractors’’ in a way that
would ‘‘disregard . . . both specific
contractual responsibilities and the
expertise of sub-contractors.’’ (124.1, pg.
3.) OSHA agrees, and crafted this rule to
ensure that subcontractors have the
information necessary to perform their
work safely, particularly information
about hidden or latent hazards that the
subcontractor may not be able to
discover quickly without endangering
its entrants. A subcontractor may have
expertise in welding inside a confined
space, but that expertise will not help it
avoid an invisible hazard it has no
reason to suspect. (See ID–213.1, pg. 1,
supra, for example of hidden dangers.)
In this case, the host employer and
controlling contractor need not develop
welding expertise; instead, they must
share information about hazards that
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they, or other employers with the
appropriate expertise, previously
identified.
Several commenters asserted that
‘‘OSHA is attempting to force certain
employers to assume a sufficient degree
of control over confined space entry’’ to
‘‘substantially expand’’ the tort law
exposure of those employers (ID–078,
pg. 2; ID–120, pg. 2–3; 153, pgs. 19–20).
OSHA does not agree, and notes that
comments urging OSHA to reduce
potential employer liability in private
rights of action are not relevant to
OSHA’s statutorily mandated
obligations to promote worker safety.
Congress enacted the OSH Act to
‘‘assure so far as possible every working
man and woman in the Nation safe and
healthful working conditions.’’ 29
U.S.C. 651(b). Congress gave the
Secretary of Labor the authority to
promulgate mandatory occupational
safety and health standards to achieve
that goal.17 Id. section 655. As OSHA
explained in an October 23, 2006, letter
to U.S. Congressman Cass Ballenger,
nothing in health or safety standards issued
by OSHA . . . determines the tort remedies
available to injured workers. That matter is
determined by the laws of the individual
states. It is not our role at OSHA either to
foster or to foil the efforts of plaintiffs’
lawyers in state court proceedings. It is our
responsibility, however, to undertake
reasonable efforts ‘‘ . . . to assure so far as
possible every working man and woman in
the Nation safe and healthful working
conditions,’’ and OSHA’s standards are
therefore focused on addressing workplace
hazards.’’ In general, tort law remedies
present entirely separate bodies of law that
are available at common law, or as the result
of state action, to anyone in the general
public (including workers) who might be
harmed by a wrongful act; they are not aimed
specifically at correcting workplace hazards.
The OSH Act does not contain any
private right of action allowing
employees to recover for injuries or
illnesses caused by hazardous work
conditions. Instead, Section 4(b)(4) of
the OSH Act makes clear that any effect
of OSHA standards on state tort law is
limited: ‘‘Nothing in [the OSH] Act shall
be construed to . . . enlarge or diminish
or affect in any other manner the
common law or statutory rights, duties,
or liabilities of employers and
employees under any law with respect
to injuries, diseases, or death of
employees arising out of, or in the
course of, employment.’’ (29 U.S.C.
653(b)(4).) The plain language of section
4(b)(4) thus indicates that any standard
OSHA promulgates generally has no
17 The Secretary delegated those responsibilities
to the Assistant Secretary for Occupational Safety
and Health, who heads OSHA. See 77 FR 3912 (Jan.
25, 2012).
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effect on, and certainly cannot
‘‘substantially expand,’’ employees’
rights under the state tort system with
respect to workplace injuries and
illnesses. See, for example, Crane v.
Conoco, Inc., 41 F.3d 547 (9th Cir. 1994)
(‘‘OSHA violations do not themselves
constitute a private cause of action’’);
Atlas Roofing Co., Inc. v. OSHRC, 430
U.S. 442, 445 (1977) (‘‘existing state
statutory and common-law remedies for
actual injury and death remain
unaffected’’ by the OSH Act); Frohlick
Crane Serv, Inc., v. OSHRC, 521 F.2d
628, 631 (10th Cir. 1975) (‘‘It would
appear that by this particular provision
[section 4(b)(4)] Congress simply
intended to preserve the existing private
rights of an injured employee, which
rights were to be unaffected by the
various sections of the Act itself.’’); Jeter
v. St. Regis Paper Co., 507 F.2d 973, 977
(5th Cir. 1975) (‘‘It seems clear that
Congress did not intend [the OSH Act]
to create a new private cause of action,
but, on the contrary, intended private
rights to be unaffected thereby.’’) .
OSHA recognizes that state courts in
some circumstances use OSHA
standards, including these final hostemployer and controlling-contractor
provisions, as evidence in a negligence
action. (See, for example, Knight v.
Burns, Kirkley & Williams Constr. Co.,
331 So.2d 651 (Ala. 1976).) But when
they do so, any effect on tort law is a
function of these state court decisions
and is not in any way dictated by
OSHA’s standard. See Summit
Contractors, Inc. v. Sec’y of Labor, 442
Fed.Appx. 570, 572 (D.C. Cir. 2011)
(rejecting arguments that OSHA’s multiemployer duties would increase
common law liability for general
contractors because ‘‘such liability
would arise only from a court’s
(hypothetical) later action under state
law—not from the OSH Act itself’’).
Other commenters submitted a variety
of objections about the informationexchange provisions, including that the
controlling contractor and host
employer information-sharing
requirements ‘‘do not reflect an
appropriate application of
responsibilities, and expand the duties
of general contractors in the residential
construction industry’’ (117.1, pg. 7),
thereby requiring the host employer to
maintain extensive files about each
confined space located on its property,
which ‘‘would be impractical and
infeasible in today’s business context’’
(153, pgs. 18–19). Commenters also
complained that the coordination
requirements were ‘‘unworkable’’
(219.2, pg. 40 (marked as pg. 37)).
However, another commenter
responded:
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Throughout the hearings, participants
argued, on the one hand, that OSHA should
simply extend the general industry standard
to construction and, on the other, that the
proposed standard would impose
unprecedented and unwarranted burdens on
controlling contractors, which would expose
them to substantial liability. . . . [T]here is,
in fact, little new in the proposed multiemployer provisions. And, there is nothing in
the record that . . . suggested that the
information-sharing requirements under
§ 1910.146 have proven to be either
burdensome or unnecessary. . . . [Based on
the record,] the provisions requiring
information sharing between the entity that
has the greatest familiarity with the worksite
and contractors coming into the worksite for
brief, discrete periods of times have proven
to be effective means of assuring that
employees can work safely in confined
spaces without imposing notable burdens or
liability on the host employers.
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(220.2, pg. 13–14.) OSHA agrees with
this comment. There are not many
substantive differences between the new
standard and the general industry
standard, and employers have not raised
significant obstacles to compliance with
the general industry standard during the
two decades following OSHA’s
promulgation of that standard. OSHA is
confident that the new construction
standard will also be workable.
Section 1926.1204—Permit-Required
Confined Space Program
The permit-required confined space
program is a critical component of new
subpart AA. Except for ventilation-only
entries conducted in accordance with
§ 1926.1203(e), the Agency requires
each employer with employees who will
enter a permit space to implement a
written permit-space program that meets
the requirements set out in this section
(see final § 1926.1203(d)). Final
§ 1926.1204 is, therefore, specifically
tailored to work activities conducted
inside a space that meets the definition
of a ‘‘permit-required confined space’’
(‘‘permit space’’) in final § 1926.1202.
Technically, final § 1926.1204 sets out
information and actions that must be
included in the permit program, and the
requirement to implement these steps is
in final § 1926.1203(d), but employers
should view § 1926.1204 as the main set
of requirements for protecting their
employees when entering a permit
space.
In the preamble to the general
industry confined spaces standard, the
Agency observed that ‘‘an employer
who waits until the last minute before
entry operations begin to develop a
permit space program is unlikely to
have properly trained and equipped
personnel available’’ (58 FR 4495 (Jan.
14, 1993)). Accordingly, OSHA designed
final § 1926.1204, which is similar to
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§ 1910.146(d), to require entry
employers to plan the entry, and to
implement the entry in accordance with
that plan, to avoid endangering
employees during the entry.
For the reasons identified in the
Background section, above, OSHA is
conforming the language of the permitrequired confined space provisions in
§ 1926.1204 of the final rule to the
corresponding provisions for general
industry confined spaces at
§ 1910.146(d). The substance of this
section generally is the same as the
general industry standard. OSHA
explains below the differences between
the other paragraphs of the final rule
and the general industry standard, and
the significant differences between the
final rule and similar provisions in the
proposed rule. There is no discrete
section of the proposed rule that
corresponds directly to this section of
the final rule, but OSHA also included
most of the duties imposed by this final
rule in the proposed rule. See, e.g.,
proposed §§ 1926.1205 (atmospheric
monitoring and testing); 1926.1209(c)
(limiting entry) and (f) (safe termination
procedures); 1926.1210(f) (attendant
required); 1926.1210(j) (equipment);
1926.1212(a) (safe termination
procedures); and 1926.1218
(equipment).
One commenter noted that a
particular provision in the proposed
rule (§ 1926.1218(a)(4)) referred to
‘‘confined space operations,’’ and
suggested OSHA change that reference
to ‘‘confined space entry operations’’
(ID–025, p. 4). The regulatory text in
§ 1910.146 refers to both ‘‘permit space
operations’’ (§ 1910.146(g)(2)(iii)) and
‘‘permit space entry operations’’
(§ 1910.146(d)(3)) [emphasis added]. In
this final rule, OSHA changed all
references to confined space operations
and permit-space operations to confined
space entry operations or permit-space
entry operations to maintain
consistency. The terms ‘‘confined space
entry operations’’ or ‘‘permit-space
entry operations’’ refer to both actual
entry into a space, and any planning or
preparation made for the entry (i.e., an
employer can be engaged in ‘‘entry
operations’’ before actually entering a
confined space).
The introductory language in final
§ 1926.1204 provides that the entry
employer must perform the procedures
set forth in that section. OSHA
simplified the introductory language
from the language in § 1910.146(d), and
edited the language to reflect this final
standard’s use of the term ‘‘entry
employer’’ when discussing an
employer who decides that employees it
directs will enter a permit space. OSHA
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25417
made this change to clarify which
employers must comply with these
procedures on a multi-employer
worksite.
Paragraph (a). Final § 1926.1204(a),
which is identical to § 1910.146(d)(1),
requires an employer to implement an
effective means of preventing all
unauthorized entry into a permit space.
These measures are necessary to prevent
unauthorized entry into PRCSs, and to
protect employees from encountering
PRCS hazards. Under the final rule, it is
the entry employer’s responsibility to
ensure that all unauthorized persons
stay out of the established permit space,
regardless of who employs them. Any
unauthorized employer who enters a
permit space could pose a danger not
only to themselves, but also to workers
already inside the space. The entry
employer’s duty to prevent
unauthorized entry also extends to the
prevention of unintentional entry, such
as a person falling into a space or
accidently entering a permit space
because of confusion about where an
entrance to a space leads. The duty also
extends to members of the public
passing near the construction site (e.g.,
a sewer manhole) in order to protect the
employees in the permit space.
This final provision makes no
substantive change from the proposed
rule. Proposed § 1926.1209(c)(1)(i)
provided that employers use barriers or
high-visibility physical restrictions,
such as a high-visibility warning lines,
to prevent unauthorized entry into a
space. One commenter asserted that
circumstances arise that make it unsafe
to use the physical restrictions specified
in proposed § 1926.1209(c)(1)(i) (ID–
104, p. 3). For example, when
employees perform work to rehabilitate
or install a protective coating in a sewer,
the employer must use devices such as
cables and hoses that run from a
compressor to the airless spray pump,
and then into the manhole to the spray
gun, resulting in a tripping hazard that
could cause someone to fall into the
manhole. In such situations, this
commenter suggested that OSHA
require only that the employer post
danger signs. OSHA expects that signs
by themselves will generally be
inadequate to prevent an inadvertent
fall into a manhole. Even if the
employer has full control of the
entrance to the permit space to and can
guard against members of the public
who cannot see the signs or read them,
there are too many activities on a typical
construction site for an employer to
ensure that workers would not be
distracted and fail to see the sign or the
manhole. Manholes, like other fall
hazards at a typical worksite, must be
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guarded in a manner that meets the
requirements of this standard and the
applicable specifications of 29 CFR part
1926, subpart G—Signs, Signals, and
Barricades and subpart M—Fall
Protection.
Because OSHA is duplicating the
general industry standard in this portion
of the final rule, it does not specify the
particular means of compliance. This
approach provides employers with
flexibility in complying with this
provision by not limiting the measures
required under this provision to
physical restrictions only. The
employers’ means of preventing entry
will be evaluated based on its
effectiveness at accomplishing that task.
The same explanation that OSHA
provided for the general industry rule
applies in the construction context as
well:
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[I]f the workplace is so configured as to
prevent access of unauthorized entrants into
areas containing permit spaces, training,
alone or in combination with signs, may
prevent the unauthorized access to the
spaces. Otherwise, covers, guardrails, fences,
or locks will be necessary. It is the
employer[’]s responsibility to use whatever
measures are necessary to prevent
unauthorized entry.
58 FR 4495.
Paragraph (b). In final § 1926.1203(a),
OSHA requires employers to identify
and evaluate the hazards of permit
spaces that employees will enter. Final
§ 1926.1204(b), which is identical to
§ 1910.146(d)(2), requires an employer
that authorizes employees to enter a
permit space to first conduct a thorough
evaluation of that permit space to
identify the presence and location of all
hazards within the permit space. This
hazard evaluation is necessary to ensure
that the spaces are correctly assessed to
make the permit-space program as
effective in protecting employees as
possible. This evaluation may be
combined with the initial evaluation
required by final § 1926.1203(a), or it
may be conducted separately. OSHA
anticipates that most employers who
intend to enter a space will conduct a
single evaluation that complies with the
requirements of both §§ 1926.1203(a)
and 1926.1204(b).
Paragraph (c). Final § 1926.1204(c),
which is similar to § 1910.146(d)(3),
requires an employer to develop
procedures needed to facilitate safe
entry operations into most permit
spaces. The paragraph lists eight
measures that employers must take.
However, this list is not comprehensive:
Some spaces may include unique
hazards, locations, or configurations
that require additional steps to ensure
the safety of entrants. The
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subparagraphs in final § 1926.1204(c)
provide specific elements of these
required procedures.
Paragraph (c)(1). Final
§ 1926.1204(c)(1), which is identical to
§ 1910.146(d)(3)(i), requires an employer
to identify the entry conditions that
employers must meet to initiate and
conduct the entry safely. For example,
when an atmospheric hazard exists in
the space and an employer must use
personal protective equipment (PPE) to
protect employees from the hazard, the
employer must include in the
acceptable entry conditions the type of
PPE employees are to use (such as type
of respirator) and the exposure levels at
which the PPE would protect the
employees from the atmospheric hazard.
If the permit space contains physical
hazards, the entry employer must
ensure that the acceptable entry
conditions include the methods used to
protect employees from the physical
hazards. If the employer does not satisfy
the conditions specified in either
example, or in any list of acceptable
conditions, then the result is a
prohibited condition, meaning that
employees must not enter the space and
must evacuate if they are already in the
space.
When determining the acceptable
entry conditions, the employer must
consider the work employees will
perform and the hazards that may result
from that work. For example, an
employer that plans to weld inside a
confined space must account for the
hazard resulting from the welding fumes
and gases when identifying acceptable
entry conditions. As another example,
an employer who plans to introduce
gases into a space to inert potentially
flammable gases must take into
consideration the effect of the inerting
gases on the atmosphere because that
process will generally result in an IDLH
atmosphere.
Paragraph (c)(2). Final
§ 1926.1204(c)(2), which is identical to
§ 1910.146(d)(3)(ii), requires an
employer to provide each authorized
entrant or that employee’s authorized
representative an opportunity to observe
any monitoring or testing performed in
a permit space. Final § 1926.1204(c)(2)
does not require employees and their
authorized representatives to observe
the specified activities; however, it
provides employees and their
authorized representatives with the
option to observe should they choose to
do so. OSHA added this requirement to
§ 1910.146 in 1998, along with several
other employee participation
requirements. The Agency explained
that those requirements would
‘‘function to provide a ‘check’ on human
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error in those cases where monitoring
was improperly performed, and the
Agency pointed to data demonstrating
that human error in monitoring of a
hazardous atmosphere was a critical
element in many deaths in confined
spaces (63 FR 66032 (Dec. 1, 1998)).
OSHA also noted that its record
indicated that many entrants would not
choose to request to observe the
monitoring, but stated ‘‘it is reasonable
to assume that allowing authorized
entrants or their designated
representatives to observe the testing of
spaces will prevent a substantial portion
of the accidents attributed . . . to
human error’’ (id). OSHA believes that
this will also be the case under the final
rule.
OSHA also believes that allowing
employees and their authorized
representatives to participate in this
manner will contribute to the successful
implementation of safe entry operations
by enhancing their awareness of the
hazards present in the confined space.
Moreover, as OSHA noted when it
added these observation requirements to
the general industry standard, the
employee participation requirements are
consistent congressional intent and with
a number of OSHA health standards that
provide employees with the opportunity
to participate actively in protecting their
own safety and health and that of their
co-workers (see discussion at 63 FR
66020–66021).
Paragraph (c)(3). Final
§ 1926.1204(c)(3), which is similar to
§ 1910.146(d)(3)(iii), requires an
employer to include measures in the
permit program to isolate a permit space
or, where applicable, a physical hazard
within the permit space (such as
isolating mechanical hazards through
lock out). The general industry standard
refers only to ‘‘isolating the permit
space,’’ while the new final rule also
addresses isolating physical hazards
within the permit space, such as by
placing a physical barrier inside the
permit space to eliminate the potential
for employee contact with a physical
hazard inside that space, for the reasons
provided in the explanation of
§ 1926.1203(e)(1)(i) and (g)(1). It is
important to isolate the entrants from
the hazards that may exist in the
continuous space, or may enter into the
continuous space and eventually
migrate to engulf the entrants. For
example, if an entry employer has not
isolated a particular area of a
continuous system such as sewer
system, then the entire continuous
system is a confined space. If any part
of that system contains material that has
the potential for engulfing an entrant
then the entire system is a permit space.
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If an employer is able to isolate all of
the physical hazards, then the employer
might be able to reclassify the space as
a non-permit space or enter under the
alternative procedures in § 1926.1203(e).
However, employers may still choose to
enter under a permit program or may be
required to do so if, for example, they
isolate a physical hazard but cannot
control an atmospheric hazard and must
enter using respirators. The requirement
to include the isolation measures in the
permit program is critical to employee
safety in those situations, as well when
the employer is relying on isolation to
prevent hazards from entering a space.
Requiring the listing of the isolation
method as part of the permit program is
also useful to remind employers that if
they are relying on the isolation to enter
a confined space under the alternative
procedures in § 1926.1203(e) or the
reclassification under § 1926.1203(g),
they must maintain that isolation or the
permit program requirements will apply
immediately.
If the employer is using isolation to
protect the employees during the entry,
then paragraph (c)(3) requires that the
program include a method to ensure
that the hazards remain isolated for the
duration of the entry. Isolation methods
provide the highest degree of assurance
that the hazard will be kept away from
the employees in the space, because
isolation does not generally depend on
the continued, proper operation of
machinery (such as ventilation
equipment) or PPE (such as respirators).
If the space is such that the employer
can demonstrate that it is infeasible to
isolate the hazards, the employer need
not include isolation measures in the
permit program, but must eliminate or
control the hazards in accordance with
final § 1926.1204(c)(4) and
§ 1926.1204(e) (see final
§ 1926.1204(e)(1)). If the employer
cannot maintain isolation or control the
hazards, then the employer must
terminate entry operations immediately.
Three commenters provided examples
of how they believed it was possible to
isolate portions of a confined space from
other portions of the space. The first
commenter addressed a scenario in
which the employer is applying a
protective coating to a sewer (ID–104,
pp. 2–3). The commenter, an association
representing members who apply
protective coatings in sewers, asserted
that the employer can isolate the permit
space from the other sections of the
sewer by running a bypass line
upstream with pneumatic pipe plugs
installed that provide a tight seal to
prevent passage of air and liquids.
The second commenter, an
association representing utility
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25419
contractors who work regularly in
sewers, noted that employers can
sometimes block the flow of effluent
into one part of a sewer system from a
larger confined space by using pipe
plugs upstream from where employers
will conduct the work (ID–210, Tr. p.
187). In some cases, employers also use
plugs to block off a portion of the sewer
downstream from where an employer
will conduct the work, and then purge
and clean the workspace in between the
plugs (ID–210, Tr. p. 188). In either
scenario, the commenter stated that an
employer can block the flow of air and
effluent through the line by properly
fitting pipe plugs to a pipe, pressurizing
them with a few pounds of air, and
either blocking in the plugs so they
cannot fall out or using a ‘‘double plug’’
system (inserting two plugs into the
same pipe ‘‘so if one slips you will have
a backup’’) (ID–210, Tr. pp. 187, 189,
and 199). The commenter acknowledged
that there had been ‘‘failures’’ where the
plugs exploded or did not function
correctly and ‘‘killed and injured
workers,’’ but characterized such
incidents as occurring ‘‘rarely’’ and only
as a result of incorrect installation or
procedures (ID–210, Tr. p. 208). The
commenter agreed that the proper
procedures would normally include
installing a bypass line upstream of the
pipe plug to redirect any effluent and
ensure that pressure does not build
behind the pipe plug (ID–210, Tr. p.
208).
A third commenter, a different sewerservices association, also agreed that, in
many cases, employers can use pipe
plugs along with bypass lines and ‘‘gate
valves’’ to prevent effluents from
entering a section of a sewer system, but
indicated that employers rarely use pipe
plugs on pipes greater than 10 inches in
diameter for significant periods of time
(ID–211, Tr. p. 156).18
OSHA finds that the record is not
conclusive as to whether pipe plugs,
with or without bypass systems, are a
reliable and effective means of isolating
a sewer space to protect workers from
engulfment and atmospheric hazards
moving through a continuous system.
The record, which also includes a
number of fatalities and injuries
associated with the use of pipe plugs
(see the Final Economic Analysis),
indicates that these plugs may fail as a
result of improper installation and may
not be appropriate for extended use in
larger pipes, and that bypass systems are
sometimes required to relieve the
buildup of pressure that could dislodge
the plugs. There is no evidence that the
pipe-plug failures that occurred, even if
the failures were purely the result of
improper installation, would not occur
again in the future for the same reason.
Moreover, it is not clear from the record
that a significant force such as a storm
surge could not dislodge the pipe plugs,
or that the failure of a bypass system
could not lead to pressure building
behind a pipe plug and dislodging it.
Isolation through a bypass system,
unlike the other examples of methods
used to isolate hazards listed in the
general industry standard and this final
rule, would depend on the continuous
operation of machinery. The pipe plugs
and bypass systems may, therefore,
merely be a means of controlling the
hazards, rather than isolating them,
because it is not clear that they would
completely protect workers from
exposure to these hazards.19
Paragraph (c)(4). Final
§ 1926.1204(c)(4), which is identical to
§ 1910.146(d)(3)(iv), applies to permit
spaces with hazardous atmospheres and
requires an employer to purge, inert,
flush, or ventilate the permit space to
eliminate or control the hazardous
atmosphere before entry. The purpose of
18 The same commenter also stated that most
sewer manholes do not present an engulfment
hazard because ‘‘80 to 85 percent of all of the sewer
manholes have pipe diameters of eight and ten
inches or smaller entering them,’’ and that it would
take hours for engulfment to occur under these
conditions because the Environmental Protection
Agency engineering standards ‘‘require that those
pipes be sized to flow at 50 percent of maximum
capacity during high flow periods’’ (ID–211, Tr. p.
156). OSHA does not agree that limiting flow rate
and capacity will eliminate the engulfment hazard;
the engulfment would just take longer. These
conditions do not isolate or eliminate the hazard,
and the effluent could engulf or drown an employee
who is unconscious or otherwise unable to leave
the space before it fills the manhole, particularly if
the employee is not able to keep his or her head
above the floor. Therefore, the full permit-program
protections in § 1926.1204 apply under these
conditions unless the employer isolates or
eliminates the hazard. However, if an employer can
demonstrate that it can limit the rate and capacity
of the flow, the employer could factor the potential
time for engulfment or drowning resulting from this
procedure into determining the type and location of
an early-warning system that would provide
adequate time for employees to exit a space.
19 OSHA is leaving open the possibility that an
employer could demonstrate that using pipe plugs
in conjunction with bypass systems is an effective
means of isolating a permit-required workspace
from a continuous system. To do so, the employer
must ensure that the procedure is appropriate for
the conditions and use properly installed pipe
plugs in conjunction with a bypass system to
effectively isolate a workspace in a sewer system.
Accordingly, the employer must ensure that the
procedure isolates the workspace in fact from any
engulfment hazard; OSHA would not view failure
of the pipe plug or bypass system as an
unforeseeable outcome. One of the commenters
recommended using continuous air monitoring
even if the space appears to be isolated (ID–210; Tr.
pg. 202 (Kennedy)). OSHA agrees, and recommends
that employers use continuous air monitoring under
these conditions to provide early detection of any
problems with the seal of the pipe plug.
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this provision is to reduce employee
exposure to atmosphere hazards in the
permit space. Reducing exposure to
hazards in the permit space through
engineering practices, rather than
relying on PPE as the primary protection
for employees, is the most direct and
effective means to reduce risk to the
employee, whether the airborne
substances pose a health risk of
inhalation or a safety risk of fire or
explosion.20
In § 1926.1204(c), OSHA requires
these means of reducing exposure
levels—purging, inerting, flushing, or
ventilating—‘‘as necessary’’ to eliminate
or control atmospheric hazards. With
respect to the actions in paragraph
(c)(4), ‘‘as necessary’’ means that an
employer must take at least one of these
actions if the permit space has a
hazardous atmosphere. The only permit
spaces where these actions are not
necessary are those in which the space
does not have a hazardous atmosphere,
as defined in § 1926.1201, but is
designated as a permit space because it
contains another hazard, such as an
engulfment hazard, inwardly converging
walls, or other recognized serious safety
or health hazard.
The means used to reduce risk must
be appropriate to the characteristics of
the hazardous atmosphere and it must
also ‘‘eliminate or control’’ the hazard to
produce ‘‘safe permit space entry
operations (§ 1926.1204(c)). For
example, inerting a space that already
has an oxygen-deficient atmosphere
would be an inappropriate action,
whereas ventilating with additional
outside air would help to increase
oxygen levels.
The Agency notes that it previously
issued letters responding to questions
about the conditions under which the
general industry standard permitted
employers to work in a space with
flammable gas in concentrations greater
than 10 percent of the LFL. See August
15, 1996, letter to Larry Brown, and
September 4, 1996, letter to Macon
Jones. OSHA subsequently clarified its
position on those issues in a 2011
response to the U.S. Chemical Safety
and Hazard Investigation Board, stating
that the general industry standard
‘‘prohibits entry into atmospheres
greater than 10 percent of the [LFL],
20 This approach is consistent with longstanding
industry safety practice and OSHA policy. Under its
‘‘hierarchy of controls’’ policy reflected in a number
of standards, OSHA only allows employers to rely
on respirators or other PPE to the extent that
engineering controls to eliminate the hazard are not
feasible. See, e.g., §§ 1910.134(a) (respiratory
protection) and 1926.103 (respiratory protection);
1910.1000(e) (air contaminants); 1910.95(b)
(occupational noise exposure) and 1926.101
(hearing protection).
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unless the flammable/explosive hazard
has been controlled through inerting of
the space to reduce the oxygen content
below that needed to support
combustion.’’ (ID–223, p.3).
OSHA takes the same approach with
respect to this construction standard.
While employers may use a variety of
means to reduce the LFL to 10 percent
or below, thus avoiding an LFL
hazardous atmosphere as defined in
§ 1926.1202, OSHA reiterates that this
new final rule for confined spaces in
construction prohibits employees from
working in any atmosphere above 10
percent LFL except when the employer
successfully inerts the space so as to
effectively remove the hazard of an
explosion. See discussion of paragraph
(1) of the definition of ‘‘hazardous
atmosphere’’ in § 1926.1202 of this final
rule. Even when the space is
successfully inerted, an oxygendeficient atmosphere generally results
such that employers must prohibit entry
unless they provide appropriate PPE or
other equipment that is capable of
protecting the employee from the
oxygen-deficient atmosphere. See
definition of ‘‘prohibited condition’’ in
final § 1926.1202 and § 1926.1204(c)(7).
As of the promulgation date of this final
rule, OSHA is unaware of PPE that
could provide sufficient protection to an
employee from an explosion involving a
flammable atmosphere. OSHA notes
that some practices such as the use of
static electricity capture, non-static
footwear, non-sparking tools, explosionproof lighting, a nitrogen blanket, or
misting may reduce the likelihood of
igniting an explosion, but none of these
practices would eliminate the
possibility of ignition. Another example
of a practice that would not provide
protection from a spark, fire, or
explosion in an LFL atmosphere is using
fire watch personnel who have the
responsibility of looking for a spark,
fire, or explosion and then responding
under emergency procedures. It is
unlikely that fire watch personnel could
react quickly enough to ensure that
employees would not be exposed to an
explosion. Therefore, the employer must
not rely on these methods in a permit
program to protect employees working
in a hazardous atmosphere in excess of
10 percent LFL. A permit program must
identify the means of reducing the
atmosphere to or below the 10 percent
LFL or provide for inerting and all
necessary PPE. OSHA added a note to
§ 1926.1204(c)(4) to make explicit the
requirement for an employer to inert a
space and provide appropriate PPE if
employees will work in a space where
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less than 10 percent LFL cannot be
achieved.
Paragraph (c)(5). Final
§ 1926.1204(c)(5) requires an employer
to determine that monitoring devices
will detect an increased atmospheric
hazard level in the event that the
ventilation system malfunctions, and to
do so in adequate time for employees to
safely exit the space. This requirement
is from proposed § 1926.1208(b). There
is no corresponding provision specified
in § 1910.146 that mirrors final
§ 1926.1204(c)(5) with respect to the use
of ventilation to control atmospheric
hazards as part of a permit program;
however, the preamble to the alternative
‘‘ventilation only’’ procedures in
§ 1910.146(c)(5)(i)(B) noted a similar
requirement as a condition of using the
‘‘ventilation only’’ approach instead of
the full permit program requirements:
In order for the space to be considered safe,
the atmosphere within the space after
ventilation may not be expected to approach
a hazardous atmosphere. This is necessary so
that, if the ventilation shuts down for any
reason (such as loss of power), the employees
will have enough time to recognize the
hazard and either exit the space or restore the
ventilation.
58 FR 4488. OSHA is including that
requirement in the final rule as a
condition of the ‘‘ventilation only’’
alternative procedures in final
§ 1926.1203(e), and OSHA is applying
the same requirement to the use of
ventilation to control atmospheric
hazards under a full permit program
because the atmospheric hazards that
could be present in a PRCS are the same
as the atmospheric hazards present in a
final § 1926.1203(e) alternateprocedures space. Therefore, the need to
plan for ventilation failure is the same:
employers must have a system in place
that quickly detects an increased
atmospheric hazard in the event that the
ventilation system stops so that
employees can escape safely whether
the entry is conducted under the permit
program requirements of § 1926.1204 or
the alternative ‘‘ventilation only’’
procedure allowed by § 1926.1203(e). As
with the general industry standard (see
explanation of § 1910.146(c)(5)(i)(B)
above), compliance with this
requirement means that employers must
ensure that the mechanical ventilation
will control the atmospheric hazards at
levels that are below the levels at which
they are harmful to entrants so that if
the ventilation fails (for example,
because of a loss of power) the
employees will have sufficient time to
escape without exposure between
detection of an increase in atmospheric
level and exit.
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Proposed § 1926.1208(b)(2) contained
provisions similar to those in final
§ 1926.1204(c)(5). One commenter
requested that OSHA provide more
detail as to how an employer can
comply with this requirement,
suggesting that employers take into
consideration ‘‘levels of detection by the
monitoring system’’ and ‘‘increases in
atmospheric hazards as workers are
evacuating’’ (ID–140, p. 5 (labeled p. 4)).
The provision is performance-based,
which allows each employer the
flexibility to determine how it will use
monitoring to comply with the
requirement. As OSHA stated in the
preamble to the proposed rule,
monitoring is the primary method for
detecting an increase in atmospheric
hazard levels. OSHA therefore requires
monitoring under this final standard to
detect ventilation system failure. In
addition, employers should be aware of
other indicators of increasing
atmospheric hazard levels, in addition
to monitoring, that may be useful in
supplementing monitoring to provide
faster detection of ventilation failures,
including changes in noise levels, air
flow, or pressure, as well as signs,
symptoms, and characteristic effects of
exposure to the atmospheric hazard (72
FR 67365 (Nov. 28, 2007)).
Paragraph (c)(6). Final
§ 1926.1204(c)(6), which is identical to
§ 1910.146(d)(3)(v), requires an
employer to provide entrants protection
against external hazards. This
requirement is in addition to the
provision in paragraph (c)(2) of this
section that an employer must provide
barriers as necessary to prevent
unauthorized entry. This requirement
will protect employees in and around
the PRCS, such as attendants, or
employees entering or exiting the permit
space, from being struck by individuals
or objects outside the PRCS that may fall
into the space, or that could injure the
employees when they are near the
PRCS. In some scenarios, employers
must use guardrails, covers, signs,
barricades, or other protective measures
to achieve this purpose. Each of these
measures must comply with the
applicable specifications of 29 CFR part
1926, subpart G—Signs, Signals, and
Barricades) and subpart M—Fall
Protection.21 For example, as stated in
the preamble for the general industry
rule, ‘‘If entrants face a substantial risk
of injury due to unauthorized entry, due
to objects falling into the space, or due
to vehicular hazards during entry into
21 All additional requirements of subparts G and
M remain in effect.
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and exit from the space, then barriers
would be required’’ (58 FR 4997).
Paragraph (c)(7). Final
§ 1926.1204(c)(7), the first clause of
which is identical to
§ 1910.146(d)(3)(vi), requires an
employer to ensure that conditions
remain acceptable for entry for the full
duration of an authorized entry. The
employer will often discharge this duty
by complying with the entry-supervisor
provisions in § 1926.1210(c) of this final
rule. By requiring the employer to have
an individual on site with this
authority, there is a greater likelihood
that the employer will conduct the
required monitoring and adhere to the
acceptable entry conditions, which is
critical to the successful
implementation of safe PRCS
procedures.
OSHA also added a clarification in
paragraph (c)(7) allowing employees to
work in a permit space that contains a
hazardous atmosphere, but only if: (1)
ventilating or other measures prescribed
in § 1926.1204(c)(4) will not reduce the
hazardous atmosphere sufficiently to
allow employees to work safely within
the permit-space; (2) the employer can
demonstrate that use of PPE will protect
the employees from that atmosphere;
and (3) the employer ensures that the
entrants use the PPE correctly.
Otherwise, the entry employer must
prohibit entry, or ensure that authorized
entrants exit the space immediately,
whenever the atmosphere inside the
space meets the definition of a
‘‘hazardous atmosphere’’ specified in
final § 1926.1202. These provisions are
implicit in the general industry
standard, but OSHA made them explicit
here to avoid any suggestion that an
employer could specify an ‘‘acceptable’’
condition that would include a
hazardous atmosphere, absent adequate
PPE.
For example, if the employer plans to
have employees in a portion of a storm
sewer with an oxygen-deficient
atmosphere, and it is not feasible to
address the oxygen deficiency through
measures prescribed in
§ 1926.1204(c)(4), then the employer
may allow employees to enter with
closed-circuit respirators that would
protect the employees from the oxygendeficiency hazard. If, however, the
employer is unable to protect employees
from these hazards using any of these
methods, then it must prevent the
employees from entering the space.
Likewise, if a confined space contains a
flammable atmosphere exceeding 10
percent, of the LFL, and the employer
cannot feasibly reduce this level to the
non-hazardous level (10 percent or
below), then the employer must inert
PO 00000
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25421
the atmosphere to address potential
explosion hazards (and use suppliedatmosphere respirators to protect the
employees from the oxygen-deficiency
hazard), or terminate entry. See also the
previous discussion of final
§ 1926.1204(c)(4).
Paragraph (c)(8). Final
§ 1926.1204(c)(8) requires an employer,
before removing an entrance cover, to
eliminate conditions that could make it
unsafe to remove the cover. Some
examples of such conditions are when
the cover is under pressure or when the
cover is preventing exposure to an
ignition source near a hazardous
atmosphere. There is no corresponding
general industry provision that has
requirements similar to final
§ 1926.1204(c)(8); it is drawn from the
requirements in proposed
§§ 1926.1210(b), 1926.1216(c) and
1926.1217(c).
As OSHA explained in the preamble
to the proposed rule, conditions such as
heat and pressure within the PRCS may
pose a danger to employees removing an
entrance cover. In such cases, the cover
may be blown off in the process of
removal, or superheated steam may
suddenly escape and burn the
employee. Another example involves
removal of a sealed cover that results in
the release of toxic gases (72 FR 67368).
To protect employees from the
hazards inside the PRCS as required by
this provision, the employer must make
a hazard assessment before removing
any cover. Accordingly, the provision
does not permit removal of the cover to
the PRCS until the employer identifies
all hazardous conditions related to the
cover’s removal, and then eliminates
those hazards.
One commenter recommended that
OSHA refer to any ‘‘hazardous’’
condition, rather than just a
‘‘condition,’’ that could make it unsafe
to remove the cover, and include
language in the text of the final rule to
address rescue personnel confronted
with an entrance cover that is unsafe to
open (ID–086, pp. 5–6). OSHA disagrees
that adding the word ‘‘hazardous’’ to the
provision would be helpful because the
sentence already is clear that the
condition at issue is such that removing
the cover could be unsafe. The
provisions of § 1926.1204 do not require
entry employers to address in their
permit programs the hazards that rescue
personnel may face during rescue, nor
do these provisions require the rescuers
to develop separate written permit
programs for rescue. However,
§ 1926.1211(b) requires that rescuers be
informed of, and trained to recognize,
hazards such as entry covers that would
be unsafe to open and might affect the
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ability of the rescuers to perform rescues
safely.
Paragraph (d). Final § 1926.1204(d),
which is similar to § 1910.146(d)(4),
requires each employer to provide all
equipment used for confined-space
operations at no cost to employees,
maintain the equipment, and ensure
that employees use the equipment
correctly. OSHA believes that providing
such equipment, and using it correctly,
will prevent injuries and fatalities in
permit spaces. Accordingly, the purpose
of this paragraph is to ensure the
availability and proper use of whatever
equipment is necessary to reduce the
dangers to employees posed by permit
spaces.
In proposed § 1926.1218, OSHA
required employers to provide several
specific categories of equipment and
included a catch-all ‘‘any other
equipment necessary for safe confined
space operations.’’ One commenter
suggested that OSHA clarify that the
employer must provide this equipment
to employees at no cost (ID–211, Tr. p.
46). The § 1910.146(d)(4) language
OSHA is adopting for this final rule
specifies that employers must provide
this equipment at no cost to employees.
Final § 1926.1204(d) varies from the
language of the general industry
standard only in that it specifies that the
employer must provide the listed
equipment to ‘‘each employee,’’ whereas
§ 1910.146(d)(4) refers generally to
‘‘employees.’’ Accordingly, in
appropriate cases, if an employer fails to
provide the necessary equipment as
required, OSHA may issue separate
citations with respect to each individual
employee not provided with the proper
equipment.
Paragraph (d)(1). Final
§ 1926.1204(d)(1), which is identical to
§ 1910.146(d)(4)(i), requires an employer
to provide necessary equipment for
conducting adequate testing and
monitoring. This equipment is essential
for protecting employees from
atmospheric hazards.
Section 1926.1204(a)(4) of the NPRM
proposed requiring employers to use a
direct-reading instrument to perform
required testing or monitoring. One
commenter asserted that direct-reading
instruments are not available for
‘‘airborne lead dust’’ or ‘‘paint that has
a multitude of solvents in the formula’’
(ID–077, p. 1). Another commenter
asserted that the final rule should
permit alternatives to direct-reading
instruments when such instruments are
not available (ID–025, p. 3). Final
§ 1926.1204(d)(1) requires an employer
to test or monitor for atmospheric
hazards that exceed PELs set to protect
against immediate injury or illness,
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which is not the case with lead.22
Furthermore, OSHA disagrees with the
other commenters’ premise that directreading instruments would be
unavailable to detect solvents. It is the
employer’s responsibility to ensure that
such equipment is available in spaces
where the final rule requires such
monitoring, and the commenter did not
indicate that is infeasible to do so. For
example, employers can use
photoionization detectors for detecting
solvents.
Another commenter suggested that
OSHA should require equipment
calibration daily to avoid equipment
malfunction (ID–025, p. 4). OSHA is not
making this change because the
provision as written in this final
standard provides employers with
flexibility in complying with the
requirements to maintain testing and
monitoring equipment, and to use it
properly. For example, the employer
can follow the manufacturer’s
instructions, or the recommendations of
a qualified person, regarding the
frequency of equipment calibration. The
manufacturers’ instructions are
sufficient for this purpose because
equipment manufacturers are most
familiar with the components,
configuration, and safe and healthful
operation of their equipment; this
information places them in the best
position to specify the proper
maintenance, calibration, and use of this
equipment under these circumstances.
Alternatively, an individual who meets
the definition of a qualified person in
final § 1926.1202 would have, through a
recognized degree or professional
standing or through extensive
knowledge, the demonstrated ability
necessary to make decisions that will
ensure the proper maintenance,
calibration, and use of equipment used
in confined spaces.
Another commenter suggested that
OSHA should provide a specific
calibration standard because
manufacturers are starting to distinguish
between various types of calibrations,
such as ‘‘bump calibration’’ and ‘‘field
calibration’’ (ID–028, p. 6). OSHA is not
adopting this commenter’s suggestion
because developing a calibration
standard is beyond the scope of this
rulemaking.
Paragraph (d)(2). Final
§ 1926.1204(d)(2), which is identical to
§ 1910.146(d)(4)(ii), requires an
22 OSHA includes identification requirements in
many of its hazard-specific standards, and
employers working in a confined space must still
comply with those requirements absent a specific
exception, but those requirements are separate from
this confined-space standard and are not subject to
change as part of this rulemaking.
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employer to provide ventilating
equipment necessary to establish
acceptable entry conditions. For
example, the employer must provide
forced-air mechanical-ventilation
equipment when using such equipment
to establish acceptable entry conditions
for entry operations under final
§ 1926.1204. Use of the required
equipment when appropriate is a
significant factor in protecting the
employees from hazardous atmospheres.
Paragraph (d)(3). Final
§ 1926.1204(d)(3), which is
substantively identical to
§ 1910.146(d)(4)(iii), requires an
employer to provide all
communications equipment necessary
to ensure that an attendant can
communicate effectively with entrants
in accordance with §§ 1926.1208(c) and
1209(e). Not all spaces require
equipment for effective communication
between the attendant and entrants, but
the employer must provide it when
necessary. Such equipment may be
necessary, for example, if the entrants
cannot hear an attendant because the
permit space is sealed off.
Another example where the employer
must provide such equipment is when
an attendant needs audio-visual
equipment to perform his or her duties
under the final confined spaces in
construction rule for more than one
permit space at a time. Examples of
such equipment include electronic
audio and video tools that enable the
attendant to detect what is occurring
inside the multiple PRCSs without the
attendant having to, simultaneously, be
physically present at each PRCS
entrance. If an employer chooses to
require an attendant to assess entrants’
status in multiple PRCSs, the employer
must provide all of the equipment
necessary for the attendant to fulfill the
required duties. OSHA believes that
expecting an attendant to be able to
adequately perform these duties without
the equipment necessary to accomplish
the attendant’s duties under this final
rule will jeopardize the health and
safety of the entrants.
There is no provision in § 1910.146 or
the proposed rule that explicitly
requires electronic communication
while attending multiple permit spaces,
but that standard implies that such
communication is necessary for the
attendant to fulfill the required duties.
In the proposed rule, OSHA requested
comments on the means, other than
electronic equipment, for an attendant
to adequately assess entrants’ status in
multiple PRCSs. Both of the
commenters who addressed this issue
agreed that electronic equipment, either
wireless or hard-wire, is the only means
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of accomplishing this duty, and there is
no contrary information elsewhere in
the record (ID–108, p. 2; –116, p. 3). The
lone exception could be when an
attendant is assessing entrants’ status in
two separate spaces that are
immediately adjacent such that the
employer can ensure assessment of both
spaces with a single attendant
positioned to fulfill the required duties
without using observation equipment.
Based on the information in the record
as a whole, final § 1926.1204(d)(3)
requires the employer to ensure each
attendant uses electronic equipment as
necessary when attending to multiple
PRCSs that are not immediately adjacent
to each other. This result also is
consistent with final § 1926.1209—
Attendant Duties.
Several commenters expressed
concern that communications
equipment would unnecessarily occupy
limited room in a confined space when
either spoken communication or line–
of–sight communication would suffice
(ID–033, p. 3; –061, p. 4; –077, p. 1;
–101, p. 2). These comments ignore the
premise of the requirement: final
§ 1926.1204(d)(3) explicitly states that
the duty to provide communications
equipment arises only when such
equipment is necessary, which means
that the employer must provide
communications equipment only when
verbal communication or line-of-sight
communication are ineffective.
Another commenter asserted that
radio communication is not always
reliable (ID–094; p. 1). As OSHA stated
in the preamble discussion of proposed
rule § 1926.1210(j)(1), such equipment
may consist of a variety of types (for
example, cell phones, two-way handheld radios), so long as it is effective (72
FR 67370 (Nov. 28, 2007)). If there is
weak or unpredictable signal strength
when using the device, the device
would not comply with final
§ 1926.1204(d)(3) and the employer
must remove the entrants until the
attendant is situated to perform the
required duties effectively. Effective,
reliable communication equipment is
essential in relaying information to
attendants, entry supervisors, and other
authorities regarding potentially
dangerous changes in the PRCS
conditions. Such information is critical
to assess the hazards within the space
and to provide information regarding
methods appropriate for protecting or
removing employees from those
hazards.
Paragraph (d)(4). Final
§ 1926.1204(d)(4), which is identical to
the general industry standard at
§ 1910.146(d)(4)(iv), requires an
employer to provide PPE when feasible
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engineering and work-practice controls
do not adequately protect employees.
The employer must provide this
equipment at no cost to the employees.
When the employer uses equipment that
is subject to an OSHA requirement, such
as respirators or ear plugs, the employer
must ensure that the equipment and its
use comply with the applicable OSHA
requirements. For example, failure to
use the appropriate filters in a respirator
can render its use ineffective, and
would be a violation of the respiratory
protection standard (§ 1926.103). The
Note to paragraph (d)(4), which is not in
the general industry standard, clarifies
this point with respect to respirators
because they are commonly used in
confined spaces. OSHA believes that
providing, using, and maintaining the
appropriate PPE in accordance with
OSHA requirements that address the
identified hazard will protect employees
from serious injury or death. However,
as noted in the discussions of
§ 1926.1204(c)(4) and (c)(7) above, PPE
cannot provide protection against some
hazards such as explosions.
Paragraph (d)(5). Final
§ 1926.1204(d)(5), which is similar to
§ 1910.146(d)(4)(v), requires an
employer to provide lighting equipment
that complies with the illumination
standard (29 CFR 1926.56) and is
sufficient to allow employees to work
safely and exit the space quickly in an
emergency. The corresponding
provision in § 1910.146(d)(4)(v) does not
explicitly note that lighting equipment
must meet other applicable OSHA
standards; however, proposed rule
§ 1926.1210(j)(2) explicitly noted this
requirement, and OSHA concludes that
it is appropriate to include this
clarification in the rule text. At least one
commenter indicated that OSHA should
explicitly cross-reference the applicable
illumination standard (ID–011, p. 1),
and OSHA did so here. OSHA also
added language requiring approval of
the lighting equipment for the ignitable
or combustible properties of the
specific, gases, vapors, dusts, or fibers
present in the PRCS. OSHA took this
additional language from the hazardous
location requirements for the electrical
equipment standard § 1926.407(b)(2)(i);
a note to § 1926.407(b)(2)(i) references
NFPA 70, the National Electric Code,
which lists hazardous gases, vapors, and
dusts by groups characterized by their
ignitable or combustible properties. The
additional language ensures that
employees will use safe lighting
equipment and wiring methods under
the particular hazardous conditions
present. This additional language does
not increase employers’ responsibilities
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25423
under this final rule because the
language merely reminds employers of
an existing obligation they have under
§ 1926.407 when using lighting
equipment under the specified
conditions. As noted above, employers
engaged in work covered by this
standard must also comply with all
other OSHA requirements unless
specifically excluded.
OSHA believes that final paragraph
(d)(5) will assist employees in
conducting safe PRCS operations,
including safe escape from a PRCS if
necessary. OSHA notes that the
provision would require an employer to
provide lighting equipment that allows
an employee to quickly exit a PRCS in
the event of an emergency: For example,
the loss of the primary power source. In
this example, there are at least two ways
in which an employer could fulfill this
duty: (1) The employer can provide a
reliable back-up power supply, or (2)
the employer can provide employees
with adequate flashlights, headlights, or
similar hand-held lighting equipment.
Providing adequate illumination for
employees to exit quickly from a PRCS
during such an emergency will enable
employees to safely escape from a
hazardous condition.
Paragraph (d)(6). Final
§ 1926.1204(d)(6), which is
substantively identical to
§ 1910.146(d)(4)(vi), requires an
employer to provide barriers and shields
when required by this standard (see
§ 1926.1204(c)(6)). OSHA believes that
this proposed requirement is necessary
to keep unauthorized employees from
entering the PRCS and to help protect
employees inside the PRCS from being
struck by objects and individuals falling
into PRCSs. When providing this
equipment, employers must ensure that
it complies with other applicable OSHA
requirements. For example, guardrails
must meet the requirements of 29 CFR
1926.502(b) (Guardrail systems), and
covers must conform to 29 CFR
1926.502(i) (Covers).
Paragraph (d)(7). Final
§ 1926.1204(d)(7), which is identical to
§ 1910.146(d)(4)(vii), requires an
employer to provide equipment that
facilitates safe entry to, and exit from, a
PRCS. In doing so, employers must
ensure that this equipment, including
its use by employees, complies with the
requirements of the applicable OSHA
requirements (for example, 29 CFR part
1926, subpart X, for ladders and
stairways, and 29 CFR part 1926,
subpart L, for scaffolds). This equipment
is critical under emergency-exit
conditions to ensure that employees exit
a PRCS in a timely and safe manner.
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Paragraph (d)(8). Final
§ 1926.1204(d)(8), which is identical to
§ 1910.146(d)(4)(viii), requires an
employer to provide rescue and
emergency equipment as needed. Final
§ 1926.1204(d)(8) ensures that the
proper equipment is available for
rescuing authorized entrants in the
event of an emergency in a PRCS,
whether it is the employer’s equipment
or equipment belonging to a rescue
service.
Paragraph (d)(9). Final
§ 1926.1204(d)(9), which is similar to
§ 1910.146(d)(4)(ix), requires an
employer to provide any other
equipment needed to safely enter or exit
the permit space or to perform permitspace rescue. OSHA recognizes that
there is a wide variety of permit spaces,
and believes that the requirement to
provide all additional equipment
necessary to perform permit-space entry
and exit ensures that the appropriate
equipment is available at the job site so
employees receive adequate protection
from hazards present during permitspace operations. Similarly, OSHA
believes the requirement to provide
additional rescue equipment as needed
addresses hazards that may be unique to
a PRCS rescue, thereby ensuring that
employees receive adequate protection
from these hazards under emergency
conditions. Accordingly, the employer
must identify this additional equipment,
if any, after conducting an assessment of
the PRCS as required by the applicable
sections of this final rule.
Proposed § 1926.1218(a)(4) specified
that an employer provide any other
equipment necessary for safe ‘‘confined
space operations.’’ For consistency, a
commenter suggested replacing the term
‘‘confined space operations’’ with
‘‘confined space entry,’’ which OSHA
used frequently in the proposed rule
(ID–025, p. 4). In response to this
comment, OSHA adopted in final
§ 1926.1204(d)(9) the corresponding
language in § 1910.146(d)(4)(ix), which
uses the term ‘‘entry.’’ OSHA added the
phrase ‘‘safe exit from’’ to this final
provision to clarify that employers must
provide equipment needed for employee
safety during the entire period they are
involved in confined space operations,
which includes ensuring that employees
can exit safely from the space.
Paragraph (e). Final § 1926.1204(e), is
similar to § 1910.146(d)(5), but includes
language from proposed § 1926.1215—
Continuous system permit spaces, as
well as editorial revisions to the
introductory text.
Paragraph (e)(1). Final
§ 1926.1204(e)(1) requires an employer
to test the permit space for acceptable
entry conditions. Information obtained
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from testing is vital to the identification
of atmospheric hazards in the space. In
instances when the permit space is fixed
or isolated, the testing will be
straightforward. Final § 1926.1204(e)(1),
however, also acknowledges that
accurately testing the full extent of a
permit space, or even a workspace
within a larger permit space, may be
infeasible because the PRCS is large or
is part of a continuous system. The size
of the space could limit the value of the
initial testing of entry conditions
because the conditions in the work
space could be affected by substances in
the connected spaces and, therefore,
subject to change. In such cases,
employers must comply with the
additional procedures in final
§ 1926.1204(e)(1)(i)–(iii), which include
pre-entry testing to the extent feasible,
continuous monitoring if such
monitoring is commercially available,
and an early warning system that
monitors continuously for non-isolated
engulfment hazards.
Final § 1926.1204(e)(1) is similar to
the corresponding provision for general
industry confined spaces at
§ 1910.146(d)(5)(i), with three
exceptions. First, OSHA reorganized the
two requirements in § 1910.146(d)(5)(i),
pre-entry testing followed by
continuous monitoring, into separate
paragraphs in final § 1926.1204(e)(1)(i)–
(ii). Second, OSHA also added the
requirement for employers to provide an
early warning system in final
§ 1926.1204(e)(1)(iii). OSHA separated
the two paragraphs to emphasize that an
employer performing confined-space
operations under final § 1926.1204(e)(1)
may be performing work under a special
set of conditions in a portion of a large
space a continuous system. As such, the
employer must comply with the special
procedures in § 1926.1204(e)(1)(i)
through (iii) (testing, continuous
monitoring, and an early warning
system), as well as paragraphs (e)(2)
through (6), to account for migrating
hazards. One example of this type of
confined space is a sewer in which a
storm or other activity at another
location could send water or hazardous
materials into the space in the sewer
where employees are working.
Third, OSHA added language
clarifying that it is the employer’s
responsibility to demonstrate that
isolation of the space is infeasible. This
requirement is implicit in
§ 1910.146(d)(5)(i), so OSHA added this
language to make the requirement
explicit and clarify that an employer
who determines that isolation of a space
is infeasible is most able to provide
information that supports this decision.
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Paragraph (e)(1)(i). Final
§ 1926.1204(e)(1)(i) requires an
employer to test to ensure that
acceptable entry conditions exist
immediately before entry occurs. The
testing must occur ‘‘to the extent
feasible,’’ meaning that even if the
employer makes a determination that it
is infeasible to isolate the space and the
test results may not accurately reflect all
potential hazards in the space, that
employer still has a responsibility to
perform normal testing in the workspace
prior to entry to ensure that a hazardous
atmosphere does not already exist in
that workspace.
Paragraph (e)(1)(ii). Final
§ 1926.1204(e)(1)(ii) requires an
employer to continuously monitor a
non-isolated permit space unless the
employer can demonstrate that the
equipment needed for continuous
monitoring is not available
commercially. Note that this
requirement is different than the
monitoring requirement for isolated
spaces in § 1926.1204(e)(2) because
paragraph (e)(1)(ii) does not include an
option for periodic monitoring unless
continuous monitoring is not
commercially available (paragraph (e)(2)
allows for periodic monitoring in
certain other circumstances). Nonisolated permit spaces, relative to other
PRCSs, have an enhanced risk of
unexpected changes in hazardous
atmosphere levels because atmospheric
hazards could migrate from other areas,
so OSHA only permitted periodic
monitoring in non-isolated spaces in the
absence of a viable alternative. By
monitoring the space continuously,
employers should detect rising levels of
a hazardous atmosphere or the
introduction of a new atmospheric
hazard before it is too late to warn the
authorized entrants and evacuate them
from the space.
Final § 1926.1204(e)(1)(ii) is similar to
the corresponding provision for general
industry confined spaces at
§ 1910.146(d)(5)(i), except that OSHA
allows for the absence of commercially
available equipment that could make it
infeasible to conduct continuous
monitoring. In such instances, OSHA
still requires periodic monitoring to
increase the likelihood of identifying as
quickly as possible a hazardous
atmosphere migrating from another part
of a continuous system. Several
commenters were unsure what OSHA
means by ‘‘not commercially available’’
(ID–106, p. 3; –129, p. 3; –152, p. 3).
Typically, equipment is ‘‘commercially
available’’ if it is offered for sale to the
public or to the relevant employers. As
OSHA stated in the preamble to the
proposed rule, one example of when
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continuous monitoring may not be
commercially available involves
particulate atmospheric hazards (72 FR
67381). In these cases, the employer
must be able to demonstrate that
periodic monitoring is of sufficient
frequency to ensure that the
atmospheric hazard remains at a safe
level, as planned (id). OSHA added a
cross-reference to final § 1926.1204(e)(2)
to inform employers of the frequency
with which to monitor periodically for
hazards if continuous monitoring is not
commercially available.
Several commenters asserted that
OSHA should require a competent
person to perform the testing and
monitoring (ID–025, p. 3; –086, p. 5).
OSHA agrees that the tester must be
competent, but is not revising the text
of the regulation to refer to a competent
person because OSHA believes that the
existing language, taken directly from
the general industry confined-spaces
standard, adequately addresses the
competency of the tester. In this regard,
the general industry confined-spaces
standard does not use the term
‘‘competent person,’’ but does use terms
such as ‘‘attendant’’ and ‘‘entry
supervisor’’ that require a level of
experience and training regarding
testing or monitoring equivalent to that
of a ‘‘competent person,’’ as defined in
§ 1926.32(f). For example, final
§ 1926.1208(b) and § 1910.146(h)(2) both
require an authorized entrant to possess
the necessary knowledge to properly
test the atmosphere within a confined
space (see also § 1926.1204(d)). Under
the training provisions of both
§ 1910.146(g) and final § 1926.1207, an
employer must provide specific training
to an employee designated as an
‘‘authorized entrant’’; this training must
establish proficiency in the duties an
authorized entrant must fulfill under
these standards. In this respect, the
scheme of both § 1910.146 and this final
rule accomplish the commenters’
objective, which is to design a
procedure whereby the person
performing the atmospheric tests has
sufficient knowledge and experience to
conduct the tests properly.
Different commenters asserted that
OSHA should identify the specific
locations for monitoring equipment in
the permit space (ID–106, p. 2; –129, p.
2). For example, these commenters
suggested that OSHA require an
employer to place monitoring
equipment at the merger point between
the larger space and the non-isolated
entry point. The continuous-monitoring
requirement is a performance-based
standard, and OSHA does not agree that
it is necessary to specify particular
locations for the placement of
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monitoring equipment, especially when
technology and monitoring practices
may evolve in the future. Accordingly,
employers have flexibility to choose
their preferred methods and equipment
to monitor, so long as the monitoring
equipment, when used in accordance
with manufacturer requirements, detects
rising levels of a hazardous atmosphere
or the introduction of a new
atmospheric hazard before it is too late
to warn the authorized entrants and
evacuate them from the space. For
additional information about
atmospheric monitoring, see May 12,
2009, letter to Edwin Porter, Jr.
Another commenter asserted that an
employer must use more than one piece
of continuous-monitoring equipment to
effectively detect hazards (ID–031, p. 1).
Final § 1926.1204(e)(1)(ii) does not
require the use of more than one piece
of continuous-monitoring equipment;
however, the provision also does not
specify that employers can accomplish
monitoring using only one piece of
equipment. The number of monitors an
employer would need to ensure the
isolation or control of atmospheric
hazards depends on the PRCS’s size,
configuration, and conditions; the
requirement here is that employers use
whatever number of monitors is
necessary to ensure the isolation or
control of the atmospheric hazards.
OSHA also selected the performanceoriented approach so that this standard
will not become outdated through
advances in monitoring technology.
Paragraph (e)(1)(iii). Final
§ 1926.1204(e)(1)(iii) requires an
employer to provide an early warning
system that will detect non-isolated
engulfment hazards. OSHA included
this requirement in proposed
§ 1926.1215(a)(2), but there is no
corresponding § 1910.146 provision. As
OSHA stated in the preamble to the
proposed rule, this equipment addresses
migrating engulfment hazards that are
present in a non-isolated PRCS. For
example, these hazards can result when
runoff from a heavy storm upstream of
a sewer flows downstream into the area
in which employees are working. OSHA
noted in the preamble of the proposed
rule that migrating hazards, especially
those hazards migrating from distant
areas, are common in non-isolated
spaces (72 FR 67382). Accordingly, this
requirement is necessary to protect
authorized entrants from the additional
hazards associated with these spaces,
including engulfment hazards.
One commenter suggested that the
requirement for an early warning system
will force employers to hire more
employees for the purpose of
monitoring the space (ID–059). Neither
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25425
the comment nor the rest of the record
provide support for this suggestion. To
the contrary, employers have flexibility
in determining whether to hire
additional employees to comply with
final § 1926.1204(e)(1)(iii). An employer
may position detection and monitoring
devices, without the need to hire
additional employees, to provide the
early warning. A full discussion of the
costs of early warning systems is
included in the Final Economic
Analysis in this document.
One commenter appeared to assume
that this provision required using
equipment, not additional employees, to
monitor engulfment hazards. This
commenter asserted that such
equipment is too expensive to maintain
(ID–098, p. 1). This commenter did not
provide any support for the assertion, or
any specific information about problems
associated with maintaining or
operating such equipment. OSHA notes
that the use of properly calibrated
equipment to detect non-isolated
engulfment hazards is a current practice
by many in the industry and has been
since before OSHA issued the proposed
rule (see transcripts of stakeholder
meetings, available at: https://
www.osha.gov/doc/reference_
documents.html). Without a specific
reason why an early warning system is
infeasible, OSHA retained this
requirement in the final rule.
Another commenter asserted that an
early warning system requirement will
require an employer to evaluate and
calibrate such systems for each potential
hazard (ID–216). It is not clear from the
comment, however, that the commenter
understood that the early warning
system described in the proposal (and
this provision) must detect only nonisolated engulfment hazards, not each
potential atmospheric hazard. Because
engulfment hazards involve the
movement of tangible substances (e.g.,
water, mud, sand), systems may detect
movement of different substances using
the same methods (e.g., a motion
detector or other sensor triggered by the
movement of water, mud, sand, or
another substance through a particular
area). The commenter did not provide
any specific examples of equipment that
would require calibration in a way that
would be burdensome to the employer
or diminish the effectiveness of the
equipment in providing an early
warning.
The same commenter suggested as an
alternative requiring employers to
disconnect, blind, lockout, or isolate all
pumps and lines that may cause
contaminants to flow into a confined
space, and then continuously monitor
that space. The alternative approaches
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mentioned by the commenter appear to
be directed at isolating the hazards. If
the employer effectively isolates or
eliminates all physical hazards within
the entire permit space, then it might be
possible for the employer to avoid the
permit program altogether if employees
can enter the space through the
alternative procedures in § 1926.1203(e),
or if there are no atmospheric hazards
and the permit space is reclassified in
accordance with § 1926.1203(g). OSHA
anticipates, however, that in most cases
employers in non-isolated spaces will
need to comply with
§ 1926.1204(e)(1)(iii) because it may not
be possible for employers to eliminate
all physical hazards from a continuous
system.
Other commenters asserted that the
requirement to use an early warning
system exposes the individuals
installing the system to hazards (ID–098,
p. 1; –120, p. 4). OSHA disagrees with
these commenters’ assertion. There are
many types of early warning systems
available, including flow monitors that
are suspended in an upstream manhole
such that no employee needs to climb
down into the confined space to place
or retrieve the monitor. These devices
are capable of detecting engulfment
hazards approaching from upstream
without exposing the individuals
installing them to additional hazards.
Employers may also be able to lower
cameras or other devices into the space,
or conduct visual inspections from
above the space without entering at all.
One commenter was unsure when,
where, and how an employer must
implement an early warning system (ID–
124, p. 5). Another commenter asserted
that OSHA should explicitly recognize
that the use of electronic monitoring
constitutes an acceptable early warning
system (ID–107, p. 3). In response to
these comments, OSHA notes that, once
the employer determines that isolation
of the space is infeasible, then the
employer must implement an early
warning system in accordance with final
§ 1926.1204(e)(1)(iii). The employer has
flexibility in determining what type of
system to use based on information it
receives about the space and its hazards,
and based on the employer’s experience
working in similar spaces. The system
can be as simple as posting observers
with communication equipment in safe
locations (e.g., outside an open
manhole) at distances far enough
upstream from the work area to timely
communicate a warning to the entrants
working downstream. Another method
would be to use detection or monitoring
devices upstream that will alert an
attendant, or activate alarms at the
entrants’ work area, in sufficient time
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for the entrants to safely avoid upstream
engulfment hazards moving in their
direction. So long as the use of
electronic monitoring alerts authorized
entrants and attendants of non-isolated
engulfment hazards in sufficient time to
safely exit the PRCS, the employer will
be in compliance with final
§ 1926.1204(e)(1)(iii).
Paragraph (e)(2). Final
§ 1926.1204(e)(2) requires an employer
to continuously monitor the space
unless the employer can demonstrate
that the equipment for continuously
monitoring a hazard is not commercially
available or that periodic monitoring is
sufficient to ensure the control of
atmospheric hazards at safe levels. Final
rule § 1926.1204(e)(2) is similar to the
corresponding provision for general
industry confined spaces at
§ 1910.146(d)(5)(ii), except that final
§ 1926.1204(e)(2) generally requires
continuous monitoring as did the
proposed rule (see proposed
§ 1926.1215(a)(1)). Several commenters
supported the requirement to monitor
permit spaces continuously (ID–105, p.
2; –106, p. 2). One of these commenters
asserted that ‘‘periodic monitoring
could be difficult to interpret, which
could potentially lead to situations
where an employer’s monitoring scheme
fails to adequately monitor rapidly
changing atmospheric conditions that
could pose risks to workers who enter
a confined space’’ (ID–105, p. 2).
In the typical PRCS in a construction
setting, it is often difficult for the
employer to predict with reasonable
certainty the levels of hazardous
atmospheres. In many instances, the
employer will have little or no past
experience with the particular PRCS,
and will lack reliable historical data on
hazard levels. Also, the PRCS may
change as construction work progresses
in ways that may cause unexpected
increases in hazard levels. For example,
changes to the wall of a PRCS may
increase the level of hazardous gasses in
the PRCS (see also ID–213.1, describing
examples of how construction spaces
can include hidden dangers, such as
paints or sealants that can release toxic
fumes if triggered by welding or other
sources of heat.) In addition,
construction equipment in the PRCS
may discharge hazardous gasses into the
space at a higher rate than anticipated.
In short, construction work follows a
less predictable course than work
covered by the general industry
standard and, thus, requires more
frequent atmospheric monitoring.
Because of this high level of
unpredictability, OSHA believes,
generally, that continuous monitoring is
necessary to protect affected employees,
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especially the entrants. This provision
enables the employer to recognize
deteriorating conditions quickly, and to
identify new atmospheric hazards in
time to take the actions required to
protect employees.
However, the Agency recognizes that,
for some PRCSs, especially those PRCSs
entered and monitored repeatedly over
a significant period of time and found
to have a stable atmosphere (such as a
remote location that is not near
potential sources of atmospheric
hazards), the employer may be able to
show that periodic monitoring will be
sufficient to ensure that the conditions
in the PRCS remain within acceptable
entry conditions. However, when the
employer uses periodic monitoring, the
monitoring must be of sufficient
frequency to ensure the control of
atmospheric hazards at planned levels,
and capable of detecting new hazards in
time to protect the employees. In some
cases, continuous monitoring may not
be possible; for example, continuous
monitoring typically is not available
when the atmospheric hazard is a
particulate. Therefore, when the
employer can show that periodic
monitoring is adequate, or can
demonstrate that the technology for
continuous monitoring of the
atmospheric hazard is not available,
OSHA will permit the employer to use
effective periodic monitoring instead of
continuous monitoring.
The preamble discussion of proposed
§ 1926.1205(a)(3) provided the following
factors that OSHA will consider in
determining whether an employer has
used an appropriate monitoring
frequency: The results of tests allowing
entry; regularity of entry (e.g., daily,
weekly, monthly); effectiveness of
previous monitoring activity; and
knowledge of the hazards (72 FR 67362).
One commenter suggested adding the
following factors to this list: (1) The
type of the work performed in the space
(i.e., hot versus cold work); (2) the time
period the confined space remains
unmonitored (i.e., requiring monitoring
every 20–30 minutes), and; (3) lunch
breaks (ID–132, p. 3). Knowledge of the
hazards from the list in the proposed
rule covers the first of these suggested
factors (type of work), while regularity
of entry from the proposal’s list covers
the third suggested factor (lunch
breaks). Effectiveness of previous
monitoring activity from the proposal’s
list addresses the second suggested
factor (the time period the permit space
remains unmonitored). Accordingly, an
employer must account for the
development of hazardous atmospheres
during periods when no atmospheric
monitoring occurs in the space to
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determine whether entry conditions
remain at safe levels over these periods.
For example, if the space remains
unmonitored for just a few minutes
prior to reentry, and previous
monitoring regularly indicates that
acceptable entry conditions continued
to exist over this period, then an
employer may conclude that it is not
necessary to monitor again prior to
reentering the space. However, if the
space remains unmonitored for a longer
time and previous monitoring indicates
that atmospheric hazard levels increase
over this period, then an employer must
evaluate and monitor the space again
before reentering it.
Some commenters asserted that
OSHA must define the term ‘‘periodic
monitoring’’ to avoid confusion among
the regulated community (ID–075, p. 10;
–129, p. 2;–152, p. 2). The frequency
with which it is necessary to monitor a
confined space differs based on the
particular facts and circumstances.
OSHA provided the factors listed in the
previous paragraph to assist employers
in determining when periodic
monitoring is necessary; however, final
§ 1926.1204(e)(2) maintains
performance-based language, which
OSHA believes will provide employers
with flexibility in complying with this
final rule. Moreover, there was no
indication in the record that the
longstanding use of the term ‘‘periodic
testing’’ in § 1910.146 is causing the
level of confusion suggested by the
commenters.
Paragraph (e)(3). Final
§ 1926.1204(e)(3), which is identical to
§ 1910.146(d)(5)(iii), requires an
employer to test for particular
substances in a pre-determined order:
oxygen, then combustible gases and
vapors, and finally toxic gases and
vapors. The preamble to the general
industry confined-spaces standard
noted that this procedure represents
generally accepted safe work practices,
and explained the specified order as
follows:
A test for oxygen must be performed first
because most combustible gas meters are
oxygen dependent and will not provide
reliable readings in an oxygen deficient
atmosphere. In fact, the Johnson Wax
Company (Ex. 14–222) stated that ‘there is [a]
specific (sensor dependent) oxygen level
below which the combustible gas sensor will
not respond at all [emphasis was supplied in
original].’ Combustible gases are tested for
next because the threat of fire or explosion
is both more immediate and more life
threatening, in most cases, than exposure to
toxic gases.
(58 FR 4499). OSHA also included this
same requirement in the proposed
§ 1926.1205(a)(1), and received no
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comments challenging the validity of
this approach. OSHA remains
convinced that the priority assigned to
testing or monitoring atmospheric
hazards by final § 1926.1204(e)(3)
remains valid, and believes that this
requirement is critical to the health and
safety of employees involved in
confined-space entry.
OSHA notes that final
§ 1926.1204(e)(3), like the proposed
rule, does not require an employer to
test for combustible dust. There
currently are technological limitations
on testing for airborne combustible dust
in a timely manner; in addition, unlike
flammable vapors, in situations in
which airborne combustible dust
reaches a minimum combustible
concentration, the dust cloud generally
is dense enough to detect with the
naked eye.
Paragraph (e)(4). Final
§ 1926.1204(e)(4), which is identical to
§ 1910.146(d)(5)(iv), requires an
employer to provide an authorized
entrant or employee authorized
representative with the opportunity to
observe testing or monitoring. See the
discussion of final § 1926.1204(c)(2) for
an explanation of the importance of
providing an opportunity an
opportunity for observation to entrants
or their representatives.
Paragraph (e)(5). Final
§ 1926.1204(e)(5), which is similar to
§ 1910.146(d)(5)(v), requires an
employer to reevaluate a PRCS if there
is ‘‘some indication’’ that the previous
evaluation was inadequate and an
authorized entrant or that entrant’s
authorized representative asks an
employer to reevaluate the space. This
requirement ensures that entrants, or
their representatives, can provide a
check on potential human error in the
monitoring process before they are
potentially exposed to harm. This
requirement is consistent with other
requirements to allow employee
observation of testing results, the
reasons for which are set forth in the
explanation of § 1926.1204(c)(2). In
some cases employees who did not
observe the initial monitoring process
may notice something about the
equipment or space that calls into doubt
the initial evaluation, but in other cases
this requirement serves as a corollary to
the general observation requirements: an
employee or employee representative
who observes the initial evaluation of
the space pursuant to § 1926.1204(c)(2)
and notes a problem with that testing
may request a re-evaluation of the space
under § 1926.1204(e)(5).
Section 1910.146(d)(5)(v) requires an
employer to reevaluate when an
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25427
authorized entrant or the entrant’s
authorized representative ‘‘has a reason
to believe’’ the initial evaluation may
have been inadequate. Otherwise, this
provision of the final rule is identical to
§ 1910.146(d)(5)(v). Examples of
indications that the evaluation of the
permit space was inadequate include:
improper use of monitoring equipment
(e.g., monitoring devices have low
battery life or noticeable damage;
monitoring devices improperly
calibrated; measurements taken in
improper locations); employees noting
physical hazards not identified in the
evaluation; and inconsistent monitor
readings without adequate explanation.
Addressing an example in proposed
§ 1926.1207(a)(3), one commenter was
unsure who would make the final
decision of whether there is a
reasonable basis for believing that a
hazard determination is inadequate (ID–
120, p. 4). Specifically, the commenter
presented a situation in which an
employee provides an alleged basis for
believing that a hazard determination is
inadequate, but the employer finds that
the basis is not reasonable. Under final
§ 1926.1204(e)(5), the employer may
repeat the test, alter the test to assess
additional aspects of the space, or assess
whether a change occurred in the use or
configuration of the space after testing.
If such a change occurred, then the
employer must reevaluate the space.
Therefore, compared to the more
subjective language in the general
industry standard (i.e., ‘‘has reason to
believe’’), the reevaluation requirement
in this final provision (i.e., ‘‘some
indication’’) is more objective and based
on the observable conditions, thereby
reducing ambiguity.
Paragraph (e)(6). Final
§ 1926.1204(e)(6), which is identical to
§ 1910.146(d)(5)(vi) except for nonsubstantive clarifications and
grammatical changes, requires an
employer to immediately provide the
results of testing conducted in
accordance with final § 1926.1204 to
each authorized entrant or that
employee’s authorized representative.
This requirement will ensure that
employees and their representatives
have the information necessary to
identify potential inadequacies in the
testing and take action under paragraph
(e)(5) of this section to avoid unsafe
entries. In some cases the testing may
reveal specific conditions that fall
within an employee’s expertise or may
be relevant to an individual health
condition of the employee. For example,
if an employee knows that he or she has
a particular sensitivity to even low
levels of a substance that would not
otherwise result in a hazardous
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atmosphere, the employee could review
the test results and alert the employer if
that substance is detected so that the
employer can provide appropriate
measures to protect the employee. See
the discussion of final § 1926.1204(c)(2)
for further explanation of this
requirement.
Paragraph (f). The introductory text of
final § 1926.1204(f), which is identical
to § 1910.146(d)(6), requires an
employer to provide at least one
attendant outside a PRCS while an
authorized entrant is performing
confined-space operations. Although an
attendant does not have the overall
responsibility for employee safety and
health assigned to the entry supervisor,
the attendant is a crucial link between
authorized entrants and the entry
supervisor, and is essential for proper
rescue operations. See the discussion in
§ 1926.1209 of this final standard for
further explanation of the attendant’s
duties and the importance of the
attendant in confined-space operations.
Paragraphs (f)(1) and (f)(2). In final
§ 1926.1204(f)(1), OSHA authorizes the
permit program to allow for an
attendant to perform his or her required
duties, including assessing authorized
entrants’ status and meeting the
requirements of § 1926.1209 for more
than one permit space, similar to the
requirement specified in the proposed
rule at § 1926.1210(f)(3). Under final
§ 1926.1204(f)(2), the permit program
may allow an attendant to fulfill his or
her assessment duties for one or more
spaces from a remote location provided
the attendant is capable of fulfilling all
attendant duties under § 1926.1209 for
all spaces to which the attendant is
assigned from that remote location.
Final § 1926.1204(f)(1) and (f)(2) are
similar to the note in the general
industry confined-spaces standard at
§ 1910.146(d)(6). OSHA acknowledges
that, although it is best to have an
attendant outside each PRCS, there may
be situations when one attendant can
effectively fulfill the attendant duties in
multiple PRCSs. The ability to assess
entrants’ status in multiple PRCS sites
allows employers maximum flexibility
in providing for the safety of employees
when site-specific factors permit the
attendant to do so. For instance, in some
circumstances a single attendant
equipped with modern technologies
such as an automated monitor/alarm
system and audio-video equipment may
be able to assess entrants’ status in
multiple sites and react to emergency
conditions as effectively as a single
attendant at each space.
While paragraph (f)(1) sets forth
performance-based measures, OSHA
believes that an attendant’s ability to
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assess entrants’ status in multiple
permit spaces while adequately
performing attendant duties is
dependent on several factors, that
include: (1) the number of permit spaces
the attendant assesses simultaneously;
(2) the degree and number of the
hazards; (3) how effective the
assessment technology used is at
assessing entrants’ status and the
conditions in the permit space (i.e., is
there a system in place for the attendant
to track, from a remote location, who is
coming in and out of a permit space);
and (4) the distance between the
multiple permit spaces. This provision
may preclude a single attendant from
serving as the attendant for multiple
spaces if the employer also designated
the attendant to provide non-entry
rescue service. In most cases, an
attendant with non-entry rescue
responsibility must be physically
present to retrieve immediately the
entrant absent the availability of
equipment that would enable the
attendant to perform the rescue task
remotely and successfully. As noted in
the criteria above, the degree of the
hazard may affect the timing of entrant
retrieval and, thus, the physical
proximity required for an attendant who
has non-entry rescue responsibility (e.g.,
if the permit space contains combustible
gases that present a dangerous fire
hazard, the attendant must be capable of
retrieving the entrant immediately).
One commenter suggested that OSHA
provide a maximum distance from
which one attendant can assess entrants’
status in multiple PRCSs (ID–059.1, p.
1). OSHA did not mandate a maximum
distance because there are a number of
factors that could influence the proper
distance from which an attendant can
assess entrants’ status in multiple
PRCSs while remaining in compliance
with the applicable attendant
requirements under this final rule. For
example, some of the factors could be
the particular circumstances at the
worksite (the location and accessibility
of the permit space), the visual acuity
and observation skills of the attendant,
and the equipment provided to the
attendant. This approach provides the
most flexibility to employers.
Paragraph (g). Final § 1926.1204(g),
which is identical to § 1910.146(d)(7),
requires an employer to specify, in its
permit program, the means and
procedures it will use to ensure that a
single attendant is capable of effectively
fulfilling the attendant duties for
multiple confined spaces if an
emergency occurs in one of the spaces.
As specified in the final preamble to
§ 1910.146 and the note to proposed
§ 1926.1210(f)(3)(ii), effective
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assessment procedures include
procedures to ensure that the attendant
can respond adequately to emergencies.
If the attendant needs to devote his or
her entire attention to one of the spaces
or conduct non-entry retrieval, the
attendant must have a backup ready to
assume the attendant duties for the
other space or order the evacuation of
that space.
A commenter asserted that paragraph
(g) also should include requirements for:
(1) testing and charging electronic
equipment used to assess entrants’
status in multiple PRCSs; (2) the use of
equipment within acceptable limits in
accordance with Federal
Communications Commission (FCC)
guidelines; and, (3) attendant training
(ID–108.1, p. 2). In response, OSHA
notes, first, that final § 1926.1204(d)
requires employers to maintain
equipment provided for compliance
with this final rule, which includes
properly testing and charging the
equipment. Second, this final rule
works in conjunction with other federal
laws, and compliance with FCC
guidelines is a matter best addressed by
the FCC. Third, final § 1926.1207
requires the employer to train all
employees, including attendants
assessing multiple permit spaces, on the
provisions of the standard so that the
employees can effectively perform their
designated duties under this standard.
Thus, OSHA concludes that the final
standard already includes the duties
requested by the commenter, and that
this final standard provides employers
with appropriate flexibility in
performing these duties.
Paragraph (h). Final § 1926.1204(h),
which is identical to § 1910.146(d)(8)
except for minor clarifications, requires
each employer to specify the names of
each person who will have a particular
role in confined-space operations,
characterize those roles, and train the
named people accordingly. In the final
rule, OSHA clarified that each employer
must designate each and every
employee assigned to a specific role
under this final rule. This provision will
enable employers, employees, and
OSHA to identify which employees
need to receive what training under
final § 1926.1207.
One commenter was uncertain
whether the attendant and the entry
supervisor must be different employees
(ID–124, p. 8). The definition of ‘‘entry
supervisor’’ in final § 1926.1202
includes a note explaining that an entry
supervisor also may serve as an
attendant or an authorized entrant. This
note is identical to the note in the
general industry confined-spaces
standard at § 1910.146(b). OSHA
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included this note to parallel the general
industry standard and because OSHA’s
enforcement experience demonstrates
that, when the entry supervisor has
adequate training, he/she is capable of
serving simultaneous roles effectively.
Moreover, proposed § 1926.1210(h)
specifically stated that an entry
supervisor could serve simultaneously
as an attendant or an authorized entrant,
which is consistent with this final rule,
and OSHA did not receive any
comments indicating that this dual role
was infeasible or inappropriate.
Paragraph (i). Final § 1926.1204(i),
which is nearly identical to
§ 1910.146(d)(9), requires an employer
to have and implement effective
procedures for summoning rescue
services (including procedures for
summoning emergency assistance in the
event of a failed non-entry rescue),
performing rescue, and preventing
unauthorized personnel from attempting
rescue. The only difference from the
general industry requirement is that
OSHA added a parenthetical to note that
employers have a duty to summon
emergency assistance in the event of a
failed non-entry rescue.
Several commenters were unsure
which employer must summon rescue
(ID–025, p. 4; –150, p. 3). Another
commenter asserted that the attendant
should summon rescue (ID–210, Tr. p.
357). Final § 1926.1204(i) applies to any
employer, including a controlling
contractor or host employer, that has its
own employees performing confined
space operations. Each such employer
must designate an attendant, and final
§ 1926.1209(g) requires the attendant to
summon a rescue service when needed.
When multiple employers are operating
in the same space, the employers must
coordinate the procedures for
summoning a rescue service as part of
their general coordination duties under
§§ 1926.1203(h)(4) and 1926.1204(k).
This provision will ensure that
procedures are in place for the timely
and effective rescue of entrants when
necessary.
Paragraph (j). Final § 1926.1204(j),
which corresponds to the requirements
in § 1910.146(d)(10), requires an
employer to develop procedures for the
development, issuance, use, and
cancellation of an entry permit; the final
provision also is similar to proposed
§ 1926.1212(a). The permit is one of the
most crucial elements of a permit
program because it provides specific
instructions for monitoring and
addressing hazards in a particular space.
See the discussion to final §§ 1926.1205
and 1926.1206 for further explanation
on the importance of developing and
using entry permits for confined-space
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entry. In the final rule, OSHA added a
clarification that these procedures must
cover the safe termination of entry
operations, which must include
procedures for summoning emergency
assistance in the event that non-entry
rescue fails (see discussion of backup
emergency assistance in final
§ 1926.1211).
One commenter was unsure which
employers must comply with final
§ 1926.1204(j) (ID–120, p. 4). Final
§ 1926.1204(j) applies to any employer,
including a controlling contractor or
host employer, that has its own
employees performing confined space
operations.
Paragraph (k). Final § 1926.1204(k)
requires an employer to develop and
implement procedures for coordinating
confined-space entry when multiple
employers are performing work
simultaneously that could affect
conditions in a permit space, a
requirement derived from proposed
§ 1926.1204(d). In the general industry
confined-space standard,
§ 1910.146(d)(11) requires coordination
procedures when multiple employers
are working simultaneously ‘‘as
authorized entrants.’’ This final
provision differs from § 1910.146(d)(11)
by addressing the need to coordinate
work activities through the controlling
contractor, as well with employers
working outside the permit space when
their work could foreseeably affect
conditions within a confined space. The
controlling contractor (or the employer
specified in § 1926.1203(i)) and each
entry employer are responsible for
coordinating work activities among
different employers to protect confined
space entrants under final
§ 1926.1203(h)(4), and entry employers
must ensure that their permit programs
specify when and how they will share
information with the controlling
contractor in a timely manner in
accordance with § 1926.1203(h)(4) and
(h)(5)(ii). The permit program also must
address how the entry employer’s
employees are to receive and transfer
information about a confined space from
the controlling contractor in accordance
with § 1926.1203(h)(2), and how the
entry employer will ensure that it
implements coordination instructions
from the controlling contractor. In
addition, the entry employer still has
the duty of including in its permit
program steps to ensure coordination,
even absent action by the controlling
contractor. Such steps might include
evaluation of work and practices being
performed by other employers that
could affect conditions inside the space,
and coordinating with those employers
to ensure safe conditions inside the
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25429
confined space. For example, if an entry
employer sees another employer setting
up blasting equipment next to the
permit space, the entry employer must
check with that employer to ensure that
the blasting activity will not take place
when an entrant is in the permit space.
For additional explanation of the entry
employer’s responsibilities for
coordination, see the discussion of
§ 1926.1203(h)(4).
Paragraph (l). Final § 1926.1204(l),
which is identical to § 1910.146(d)(12),
requires an employer to develop and use
procedures for terminating an entry
permit and entry operations; the final
provision also derived from proposed
§§ 1926.1212(a) and 1926.1214(d). See
the discussion of final § 1926.1205(e) for
further explanation of the need to
develop and use procedures for
terminating an entry permit and entry
operations, including closing the entry
portal. Also, OSHA responded to the
relevant comments to proposed
§ 1926.1212(a) in its discussion of final
§ 1926.1204(j).
Paragraph (m). Final § 1926.1204(m),
which is similar to § 1910.146(d)(13),
requires an employer to review its
permit-space program whenever the
procedures prove inadequate, and to
revise those procedures when necessary.
Section 1910.146(d)(13) requires the
employer to review its program when
the employer has reason to believe that
the measures taken are inadequate.
OSHA revised this language in this final
rule by clarifying that the objective
circumstances, not the employer’s
belief, must be the basis of the review.
See the discussion of final
§ 1926.1205(f) for further explanation of
the need to review an entry permit and
to make revisions as necessary.
In addition, OSHA modified the note
under paragraph (m) from the language
used in the corresponding note to the
general industry standard at
§ 1910.146(d)(13). OSHA added the
phrase ‘‘including, but not limited to’’
in this final provision to clarify that the
examples in the note are not an
exhaustive list.
Paragraph (n). Final § 1926.1204(n) is
identical to § 1910.146(d)(14) except for
grammatical revisions, and requires an
employer to review its permit-space
program at least every year and make
revisions to its procedures as necessary;
this provision also expands upon, and
clarifies, the proposed rule at
§ 1926.1214(b). The Agency moved the
comma that appears after ‘‘as necessary’’
in § 1910.146(d)(14) to appear after
‘‘1926.1205(f)’’ in this final rule to
clarify that this provision requires an
employer to review cancelled permits
within one year after each entry. The
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Agency notes that, in interpreting the
same language in the general industry
standard, OSHA permitted employers to
rely on documentation of quarterly
reviews, rather than cancelled entry
permits, in conducting its annual
review, so long as that documentation
contains the same information required
to be in the cancelled entry permits,
including ‘‘any information regarding
problems encountered during entry
operations that was recorded to comply
with paragraph (e)(6)’’ and ‘‘any
revision of the program that resulted
from such problems.’’ See October 21,
1993, letter to John Anderson. The
Agency will also accept the equivalent
documentation under this construction
final rule. Some commenters asserted
that requirements to review the program
are pointless because they do not ensure
that employers will discover hazards in
a timely manner (i.e., they will discover
any problems after the fact) (ID–075, p.
10;–099, p. 2;–101, p. 2). OSHA did not
design final § 1926.1204(n) to ensure
that employers discover hazards during
a particular confined-space entry
operation; the Agency designed other
sections of this final rule for that
purpose, such as § 1926.1203(h) and
final § 1926.1204(m). As OSHA
explained in 72 FR 67381 of the
preamble to the proposed rule, the
purpose of this annual review is to
evaluate the effectiveness of the permit
program and the protection provided to
employees involved in PRCS entries
during this period. OSHA understands
that some employers will use the same
comprehensive permit program for
many different spaces in conjunction
with more specific information
provided on the permits for individual
spaces. This requirement will help
ensure that employers complete future
PRCS entries in a similar manner if the
entries were successful, or make
changes to the permit program to
improve future entry operations if any
problems or concerns occurred (72 FR
67381).
One commenter was unsure whether
OSHA based the 12-month review
period on a calendar year or
cancellation of a permit (ID–075, p. 10).
This 12-month period is a calendar year
because the purpose of final
§ 1926.1204(n) is to ensure that no more
than 12 months separates the date the
employer cancels or terminates a
confined-space entry and the date the
employer reviews its confined-space
entry operations for deficiencies.
OSHA’s experience with the general
industry standard indicates that a
review, conducted once per calendar
year, is sufficient to achieve this
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purpose, and OSHA did not receive any
comments to the contrary. Therefore, if
an employer conducted a review of its
permit-space program each calendar
year, regardless of how many entries it
conducted in that calendar year, it will
be in compliance with this requirement.
Employers may conduct reviews more
frequently as appropriate, but this final
provision does not require this
frequency and, therefore, provides
employers with the most flexibility in
determining when to conduct this
annual review.
The note to paragraph (n), which is
identical to the note following
§ 1910.146(d)(14), clarifies that
employers need not conduct separate
reviews of each individual permit
program implemented during the
calendar year; a single review of all
entries during the calendar year will
suffice. Another commenter asserted
that OSHA should require a similar
annual review for entry operations
performed under the alternate
procedures specified by final
§ 1926.1203(e) and 1926.1203(g)(1) (ID–
060, p. 2). Employers who complete a
confined space entry entirely under the
alternative procedures set forth in final
§ 1926.1203(e) do not have to comply
with the requirements of final
§ 1926.1204 (see final § 1926.1203(e)(1)).
Employers need fewer precautions to
ensure the safety of employees working
within or near confined spaces when
they can use the alternate procedures
under final § 1926.1203(e) or reclassify
the permit space under
§ 1926.1203(g)(1). If there is any change
to these spaces that would result in a
hazard not addressed by these
alternative procedures, then the full
permit program and the requirements of
final § 1926.1204, including the annual
review, will apply.
Section 1926.1205—Permitting Process
Section 1205 sets forth the required
process for establishing, suspending and
cancelling entry permits. This process is
important because it helps the employer
determine if conditions in the permit
space are safe enough for entry, and it
requires the involvement of the entry
supervisor, thereby ensuring that a
person with the qualifications needed to
identify permit-space hazards, and the
authority to order corrective measures
for their control, will oversee entry
operations. The provisions in final
§ 1926.1205 are similar to the provisions
in the general industry confined spaces
rule at § 1910.146(e); however, OSHA
changed the title of the section from
‘‘permit system’’ in the general industry
standard to ‘‘permitting process’’ in the
final rule to minimize the possibility for
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confusion if a permit space was
established that might be referred to as
a system, such as a sewer system.
Paragraph (a). Final § 1926.1205(a),
which is almost identical to
§ 1910.146(e)(1), requires each entry
employer to prepare, prior to entry into
a PRCS, an entry permit containing all
of the information specified in
§ 1926.1204(c) (practices and
procedures for ensuring safe entry). This
provision differs slightly from
§ 1910.146(e)(1) because it refers to
‘‘each entry employer,’’ whereas
§ 1910.146(e)(1) refers to ‘‘the
employer.’’ OSHA made this change to
clarify which employer on a multiemployer worksite has duties under
final § 1926.1205(a).
OSHA emphasizes that the process of
preparing a permit is considerably more
than preparing a simple checklist; it
requires careful attention and planning.
The permit must list all measures
necessary for making the particular
permit space safe for entry; if the permit
omits some procedures, serious
consequences could result. Entry
permits are a critical component of the
safety process for preparing to enter a
confined space because they provide
key information about hazards in the
PRCS, and the methods used to protect
employees from those hazards. The
permits also specify who is authorized
to perform work within the PRCS, their
duties, and the extent of their authority
with respect to safety in and around the
PRCS. The Agency believes the use of
this administrative tool is essential to
the employer with employees entering a
permit space to ensure that the
employees will complete the work
within a PRCS safely. The process of
preparing the permit, as well as the
permit itself, also can be useful to the
controlling contractor and other
employers working near the confined
space because it provides a readily
accessible means of identifying the work
performed and the provisions needed to
ensure worker safety. Making the
information on the permit accessible to
employers and employees in and
around the PRCS also allows them to
maintain an elevated awareness of the
conditions within the PRCS, as well as
the equipment and procedures
necessary for safe PRCS entry
operations.
One commenter noted that multiple
employers may have employees working
in the same space, and was unsure
whether each employer must prepare an
entry permit under final § 1926.1205(a)
(ID–120, p. 4). When more than one
employer is performing confined space
entry, one permit will suffice, provided
the controlling contractor and entry
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employers properly coordinate the entry
operations of the multiple employers as
required under §§ 1926.1203(h)(4) and
1926.1204(k), and the permit identifies
all of the hazards and safety measures
required for all of the work conducted
in that space.
Paragraph (b). Final § 1926.1205(b),
which is identical to § 1910.146(e)(2),
requires the entry supervisor to sign the
permit before entry begins. Although the
employer remains ultimately liable for
compliance with this standard, the entry
supervisor’s signature underscores to
the employer and the entry supervisor
the importance of their determination
that the PRCS entry operation meets the
prerequisites for safe entry listed in the
permit. OSHA believes that signing the
form makes it more likely that the entry
supervisor and his or her employer will
address the items listed on the form
than if they do not have no to sign the
form. Moreover, the entry supervisors
may change during the course of the
entry, so it is important to identify who
completed each evaluation in the event
that questions arise.
Paragraph (c). Final § 1926.1205(c),
which is identical in substance to
§ 1910.146(e)(3), requires an employer
to make the completed entry permit
available to all authorized entrants, or
their authorized representatives, at the
time each employee enters the space.
One of the keys to protecting employees
from PRCS hazards is for both
employers and employees to know the
location of the PRCSs at the job site, the
characteristics of the hazards, and their
associated dangers. The provisions in
this paragraph are designed to achieve
this goal. Once entrants are provided
with this information, they will then be
able to make their own judgments as to
the completeness of pre-entry
preparations and point out any
deficiencies that they believe exist.
Employees will also be more likely to
bring new hazards to the attention of the
supervisor if they are discovered while
working in the permit space if the
employees are aware of which hazards
have already been identified and which
have not. Posting the permit for
employees to see at the entry point can
also be useful when multiple employers
will be working in the same permit
space.
Sharing this information with
employee authorized representatives
may help bring the representative’s
expertise to bear in identifying
additional hazards not accounted for in
the permit process. One commenter
described a situation where he, as an
authorized employee representative,
was able to alert employees to
additional atmospheric hazards that
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were generated by the adhesives used to
join plastic pipe tubes in a room with
inadequate ventilation (ID–010). Final
paragraph (c) includes one variation
from the language of the general
industry standard. Under the general
industry standard a single posting can
be sufficient to inform multiple
employees, but employers must still
make sure that the permit is available to
each entrant, or the entrant’s
representative, prior to entry into the
permit space. For example, an employer
does not fully comply with the standard
by posting the permit after one of its
employees has already entered the
permit space. OSHA is including the
same requirement in this final rule, but
is also taking the opportunity to provide
further clarification in this final rule
that the information must be made
available to ‘‘each authorized entrant’’;
the general industry standard is less
specific, referring to ‘‘all authorized
entrants.’’ In appropriate cases, if an
employer fails to make this information
available as required, OSHA may issue
separate citations with respect to each
individual employee who enters a
confined space without having access to
this information.
Paragraph (d). Final § 1926.1205(d),
which is identical to § 1910.146(e)(4),
prohibits employers from making the
entry permit’s duration longer than the
time needed to complete the related
work. Otherwise, the conditions inside
the space are more likely to change and
entrants could be unnecessarily exposed
to the residual hazards of permit spaces.
One commenter suggested that OSHA
limit the duration of the permit’s
validity to one day or one shift to ensure
that someone inspects the confined
spaces that employees are entering to
discover changed conditions (ID–060, p.
4). OSHA does not agree that such a
fixed limit is warranted. This process
would be more burdensome because it
would require cancellation of entry
permits even when there is no change
in conditions or hazards. Final
§ 1926.1204(e)(2) requires an employer
to monitor the conditions inside a
confined space to determine if they
become unacceptable. Furthermore,
final § 1926.1205(e)(2) requires an
employer to cancel the entry permit if
an unacceptable condition arises. Taken
together, these provisions provide a less
burdensome, more flexible, and even
more direct method of achieving the
same safety mechanisms as the
commenter’s suggested approach.
Moreover, the less limited requirements
are consistent with the procedures
required under the general industry
confined spaces standard at § 1910.146.
OSHA considered and rejected a similar
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25431
request for a per-shift permit limit when
promulgating the general industry final
rule (see 58 FR 4505, 4506 (Jan. 14,
1993)).
Paragraph (e). Final § 1926.1205(e),
which corresponds to § 1910.146(e)(5),
requires an employer to terminate entry
and cancel the entry permit under two
conditions: when the employer
completes the entry operations covered
by the permit (final § 1926.1205(e)(1),
which is identical to § 1910.146(e)(5)(i)),
or when there is a condition inside or
near the permit space that is not
acceptable under the permit program
established for that space (final
§ 1926.1205(e)(3), which is identical to
§ 1910.146(e)(5)(ii)). Requiring the entry
supervisor to terminate the entry permit
under either of these conditions
increases the likelihood that the
employees will exit the space before
new hazards emerge, and that
employees will avoid hazards arising
from prohibited conditions within the
PRCS. When an employer completes an
entry without incident, the employer
must cancel the permit by removing it
from the entry site. If the employer
cancels the permit in response to new
hazards or changes in the condition of
the permit space, the employer must
record the reasons for the cancellation
on the permit in accordance with
§ 1926.1205(f).
In response to comments, OSHA also
is adding an additional provision in
final § 1926.1205(e)(2) that is not in the
general industry standard, but would
provide employers additional flexibility
in certain situations identified by the
commenters. Some commenters asserted
that it is unnecessary to require
cancellation of the entry permit in every
instance in which reevaluation is
necessary, and that doing so was
unnecessarily burdensome (ID–107, p.
4; –116, p. 3). A commenter
representing a client involved in sewer
construction suggested that, in the event
an unacceptable condition arises that
necessitates temporary evacuation and
reevaluation, but does not present a new
or increased hazard for employees
working within the confined space,
OSHA should allow employers to track
these events on the existing permit
rather than cancelling the entire permit
and filling out a new permit. For
example, if there is a temporary loss of
power for five minutes such that the
entrants must exit the permit space
because the lighting conditions are
inadequate, the employer would
normally reenter once the power returns
and the conditions inside the permit
space are the same as they were for
initial entry.
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OSHA agrees that cancelling the
permit may be unnecessary when a
condition outside or inside the permit
space requires an evacuation, but the
permit space returns soon after to the
same acceptable conditions specified
under the permit. So long as the
employer records on the permit the
event that required evacuation, the
employer conducts a full reassessment
of the permit space that indicates
restoration of the acceptable permit
conditions before the employer permits
reentry, there are no new gases or
physical elements introduced into the
space that are not addressed in the
permit for that space, and there are no
other significant changes to the space,
OSHA believes that the employer can
satisfy the purposes of the permit
program without the additional burden
of cancelling and replacing the entire
permit. OSHA modified the text of the
final rule accordingly by adding final
§ 1926.1205(e)(2) to allow for the
‘‘suspension’’ of the permit, as an
alternative cancellation of the permit,
when these criteria are met. During
suspension, employers still must fulfill
all applicable duties of an entry
employer under the standard, such as
preventing unauthorized entrance. An
employer may temporarily suspend a
permit in one of two ways: by removing
it (leaving just the ‘‘Do Not Enter’’ sign
or its equivalent that must be posted
under § 1926.1203(b)(1) and remain
there throughout the entry), or taking
other steps, such as covering the permit,
to ensure that no one will mistakenly
rely on the permit to enter the space.
Regardless of the method of suspension,
the employer must also record the
reason for the suspension on the permit
(see § 1926.1205(f)).
It would still be necessary, however,
to cancel the permit and complete a new
one if there is any indication that the
existing permit may not be adequate to
ensure the safety of the entrants.
Cancellation of the permit is also
necessary if the employer is unable to
identify the cause of the change in
conditions that led to the evacuation, or
if a new substance has entered the
permit space or has increased in amount
or concentration. For example, if there
is gas in a permit space in a
concentration held below safe levels by
two ventilation fans located on the
exterior of the permit space and
operated in accordance with the
employer’s permit program, and one fan
stops functioning, all employees would
need to exit the space and the employer
must suspend the permit until the space
is returned to the allowable conditions
specified in the permit program. If the
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employer is able to identify the source
of the fan failure (e.g., a burned-out
motor), replace the fan, and return the
gas in the space to a concentration
below the applicable PEL, and nothing
else has changed in the space, then the
employer may permit its employees to
re-enter after conducting a full
reassessment of the space and noting the
reason for the fan failure on the permit.
Similarly, if the presence of a new gas
is detected but the permit already
anticipates that level of gas and includes
a means of controlling that gas, the
employer may control that gas in
accordance with the existing permit
instead of cancelling that permit and
creating an entirely new permit.
However, if the employer is unable to
identify the reason for the fan failure, or
that failure appears likely to occur again
(e.g., flickering power source), or there
has been some additional change in the
permit space (e.g., monitoring detects
the presence of a new gas not accounted
for in the permit program, or
condensation has formed within the
space impeding entry or exit), then the
employer must cancel the permit and
develop a new permit that addresses
those new conditions.
The final rule, similar to the general
industry standard, requires employers to
terminate the entry if there is an
unacceptable condition ‘‘in or near’’ the
permit space. Several commenters noted
that the proposed rule included
references to ‘‘near’’ in several different
provisions and requested clarification.
(See, e.g., ID–061.1; –095; –101.1;
–106.1; –120.1; –121.1; –124.1; –125.1;
–131; –135; –136; –152; –220.) Many of
these commenters, however, also urged
OSHA to promulgate a construction
standard that tracked the language of the
general industry standard. OSHA,
therefore, did not use ‘‘near’’ in this
final rule except in § 1926.1205(e),
which tracks the identical use of ‘‘near’’
in the general industry standard. The
requests of numerous commenters
urging OSHA to follow the general
industry standard, and the absence of
record evidence suggesting that
employers have had difficulty
complying with this general industry
requirement, indicate that the use of this
term in this context is sufficiently clear
to employers engaged in permit-space
work. The purpose of this provision
remains the same in the construction
context as in the general industry
context: protection of employees
working in confined spaces from
exposure to additional hazards
introduced into the permit space from
outside. The use of ‘‘near’’ indicates a
physical proximity to the permit space,
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but OSHA is not specifying a fixed
distance because of the variety of
potential hazards and the disparate
distances from which the hazards could
impact the confined space. For example,
a small welding job may have no impact
on a properly controlled permit space
15 feet away, but a demolition blast
could easily result in a significant
hazard for employees working in an
underground permit space much farther
away.
One commenter suggested that
existing OSHA standards were already
sufficient to protect employees from
hazards near the confined space, while
another commenter asked whether
operating gasoline-powered equipment
near the permit space would constitute
a hazard, and whether an employer
must cancel the entry permit for sewer
work every time an automobile passed
near the manhole to enter the sewer (see
ID–131 and –098.1). The examples
provided by the latter commenter
demonstrate the need to address these
external hazards in the confined spaces
standard: activities not necessarily
prohibited by any other standard and
that usually do not pose a hazard to
employees when used in open spaces,
such as operating gasoline-powered
equipment, can result in hazards when
used in close proximity to a permit
space. However, because operating
gasoline-powered equipment or
automobiles near a permit space is not
inherently hazardous to the entrants
working inside that space, the employer
would not necessarily need to cancel
the permit at each such occurrence.
Instead, the employer must assess the
hazards posed in each scenario. If the
fumes from the gasoline-powered
equipment are spewing into the
confined space, then the employer
likely would need to remove the
entrants and reassess the acceptable
conditions for work inside the space.
Likewise, if the employer did not
anticipate that automobiles would be
driving near the entry to a permit space,
and did not guard the entrance and
establish barriers to adequately protect
employees working in the permit space,
then the employer would need to
require the entrants to leave the space
in a safe manner and then reassess the
permit program if automobile traffic
develops. If, however, the gasolinepowered equipment was operating at
such a distance or in such a manner that
it would not foreseeably result in a
potential hazard to the permit-entrants,
or if the employer planned for
automobile traffic near the space and
provided barriers and other appropriate
protection, then the entry could
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continue and the permit program would
remain in effect. Activities outside the
permit space will only require entrants
to leave if they could foreseeably result
in a hazard not accounted for when the
employer developed the permit
program.
Paragraph (f). Final § 1926.1205(f),
which is almost identical to
§ 1910.146(e)(6), requires the entry
employer to ensure that the cancelled
entry permits are saved on file for at
least a year after cancellation. In
addition, § 1926.1205(f) requires
employers to note any problems
encountered during an entry operation,
particularly those that trigger
cancellation or suspension of a permit
under § 1926.1205(e), on the pertinent
permit.
This provision differs slightly from
§ 1910.146(e)(6) because it clarifies that
‘‘every entry employer’’ must comply
with these duties, whereas
§ 1910.146(e)(6) refers generally to the
duties of ‘‘the employer.’’ OSHA made
this change in recognition that there
may be many different employers on a
construction worksite, and that each
entry employer has a responsibility to
ensure that the records are saved. In
some cases, this may involve
coordination between different
employers.
The purpose of this document
retention requirement, and of the
requirement to note problems directly
on the permit, is to facilitate the
evaluation of the effectiveness of
protection provided to employees
involved in PRCS entries during the
annual review required under
§ 1926.1204(n). The requirements of
§ 1926.1205(f) help to ensure that
employees complete future PRCS entries
in a similar way if the previous entries
were successful, or that employers
improve future PRCS entries by
resolving any problems or concerns
discovered.
One commenter asserted that the
retention period should end upon
completion of the project (ID–099, p. 4).
OSHA disagrees with this commenter
because the lack of document retention
would significantly affect the
employer’s ability to complete its
required annual review. OSHA set this
minimum retention period at one year
to ensure that the documents still would
be available when employers conduct
the required 12-month review specified
by final § 1926.1204(n).
As the Agency noted in the proposed
rule, these document-retention
requirements are in addition to the
document-retention requirements
required by other OSHA standards, such
as the 30-year retention period for
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employee-exposure records required by
29 CFR 1910.1020(d) (Preservation of
records) 23 (see note to proposed
§ 1926.1219(b)). In some cases, entry
permits may constitute employeeexposure records. (See definition of
‘‘employee exposure record’’ at 29 CFR
1910.1020(c)(5).)
One commenter suggested that OSHA
incorporate the language in the general
industry confined spaces directive, CPL
02–00–100: Application of the PermitRequired Confined Spaces (PRCS)
Standard, 29 CFR 1910.146 (May 5,
1995), to provide additional explanation
of what constitutes an ‘‘employee
exposure record.’’ OSHA agrees that the
term has the same meaning in this final
rule as in the general industry standard,
and that the guidance from CPL 02–00–
100 is equally applicable: ‘‘[R]esults
which show the composition of an
atmosphere to which an employee is
actually exposed (even if the employee
is using a respirator) are exposure
records under 29 CFR 1910.1020(c)(5).’’
This requirement to maintain
exposure records gives healthcare
providers, in the event of an emergency,
access to information about the
substances and exposure levels the
employee may have experienced while
working within a confined space. This
information will enable healthcare
providers to administer medical care
effectively to injured employees.
Section 1926.1206—Entry Permit
An employer conducting a permitspace entry must post an entry permit
outside the permit space to document
the employer’s efforts to identify and
control conditions in that permit space
(see § 1926.1205(c)). The purpose of the
permit is to provide a concise summary
of the permit-space entry requirements
for a particular entry that will be useful
to the personnel who are conducting the
entry operations, to rescue personnel, to
the controlling contractor, to other
employers working near the confined
space, and to any personnel who need
to review the conduct of entry
operations after the employer terminates
the operations. Making the information
on this document accessible to
employers and employees affected by
the hazards in and around the permit
space also allows them to maintain an
elevated awareness of the conditions
within the permit space, as well as
knowledge of the equipment and
procedures necessary for safe permitspace entry operations.
23 The note in 29 CFR 1926.33 makes the
provisions of 29 CFR 1910.1020 (Access to
employee exposure and medical records) applicable
to construction operations.
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25433
The introductory language in final
§ 1926.1206 requires the employer to
include, on the entry permit, all of the
information specified in § 1926.1206(a)
through (p). Most of the information
required on the permit is substantively
identical to the general industry
confined spaces requirements at
§ 1910.146(f). The exception is
paragraph (e), which requires the
employer to record the means of
detecting an increase in atmospheric
hazard levels if a required ventilation
system stops working. OSHA included
that requirement in the proposed rule
and, for the reasons explained below,
OSHA concludes that it is important to
retain it in the final rule.
Proposed § 1926.1210(k) provided
that the employer must document, on
the entry permit, all ‘‘determinations
made’’ and ‘‘actions taken’’ during PRCS
procedures, as required by proposed
rule § 1926.1214(a). Commenters
appeared to interpret this proposed
provision as a broad and overly
burdensome requirement, which was
not OSHA’s purpose (see, e.g., ID–095,
p. 4). In light of the concerns about the
proposed language, the Agency notes
that the final rule is not requiring
employers to include on the entry
permit each determination or action
taken with respect to the permit entry.
However, employers still must make
certain demonstrations about hazards,
ventilation, monitoring, or equipment,
and document other determinations, as
required by the final standard, and make
that information available to employees
(see, e.g., § 1926.1203(e)(1), (g)(2),
(g)(3)). Final § 1926.1206 is otherwise
generally consistent with proposed
§ 1926.1214(a).
Paragraph (a). Final § 1926.1206(a),
which is identical to § 1910.146(f)(1),
requires the employer to identify the
permit space that workers are planning
to enter. This information will ensure
that employees use the correct permit
for the permit space.
Paragraph (b). Final § 1926.1206(b),
which is identical to § 1910.146(f)(2),
requires the employer to record the
purpose of the entry. As the Agency
noted in the proposed rule, this
information must be sufficiently
specific, such as identifying specific
tasks or jobs employees are to perform
within the space, to confirm that the
employer considered performance of
each specific construction activity in the
hazard assessment of the PRCS. (See
proposed § 1926.1214(a)(1)(ii).) An entry
employer’s failure to evaluate
construction activities performed within
the PRCS for their effect on the
conditions within the space could result
in serious injury or death to employees.
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It would be sufficient, for example, to
state the purpose of entry as
‘‘replacement of communications cable
in sewer line,’’ or ‘‘welding upgraded
component inside steel tank,’’ but it
would not be sufficient to state only
‘‘communications work in sewer line’’
or ‘‘upgrade to tank.’’
Paragraph (c). Final § 1926.1206(c),
which is identical to § 1910.146(f)(3),
requires the employer to record the date
and authorized duration of the planned
entry. The ‘‘date’’ refers to the day on
which authorized entrants are permitted
to enter the PRCS. The duration of the
permit may not exceed the time
required to complete the specified tasks
or jobs, including the time necessary to
set up and dismantle any tools or
equipment required to perform the tasks
or jobs (see § 1926.1205(d)). The
employer need not list duration in terms
of time, but instead may describe it in
terms of the completion of tasks
identified in the permit. For instance,
the employer could describe the
duration as ‘‘welding and repair of
water main’’ or ‘‘upgrading equipment
in an electrical vault.’’ One purpose of
this provision is to ensure that
employees engaged in PRCS operations
are informed of the period during which
conditions in the PRCS must meet
acceptable entry conditions as specified
in the entry permit. A second purpose
is to place some reasonable limit on the
duration of the permit, because a permit
of unlimited duration is not likely to
account for changed PRCS conditions.
Paragraph (d). Final § 1926.1206(d),
which is identical to § 1910.146(f)(4),
requires the employer to record the
identity of the authorized entrants so
that the attendant is capable of safely
overseeing the entry operations.
Employers can meet this requirement by
referring in the entry permit to a system
such as a roster or tracking system used
to keep track of who is currently in the
PRCS. The availability of this
information would enable the attendant,
entry supervisor, or rescue service to
quickly and accurately account for
entrants who might still be in the PRCS
when an emergency occurs. A second
purpose is to provide assurance that all
authorized entrants have exited the
PRCS at the end of entry operations. A
third purpose would be to assist the
attendant and entry supervisor in
preventing unauthorized personnel from
entering the space.
It is extremely important for the
employer to confirm that all authorized
entrants have exited the PRCS during an
evacuation. Therefore, a tracking system
that lists the names of the employees
who the employer designates as
authorized entrants, but does not
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accurately account for the number of
employees inside the PRCS at all times,
would not meet the requirements of this
paragraph. Merely maintaining a list of
authorized entrants, who may or may
not be at the job site or inside the PRCS,
would not help the employer determine
how many authorized entrants are left
inside the PRCS should an evacuation
be necessary. Likewise, a tracking
system that only accounts for the
number of authorized entrants inside
the PRCS, without providing their
names or other identifiers, also is not
acceptable; knowing the name or other
identifier of each entrant makes it easier
for the rescuers to determine where the
entrant is assigned to work in the PRCS,
and thereby determine the entrant’s
probable location.
Paragraph (e). When a permit program
requires ventilation, OSHA requires
employers to ensure that they have a
monitoring system in place that will
alert employees of increased
atmospheric hazards in the event the
ventilation system fails (see
§ 1926.1204(c)(5)). Final § 1926.1206(e)
requires the employer to record the
means of detecting an increase in
atmospheric-hazard levels if the
ventilation system stops working. It is
important for employers to provide this
information on the entry permit so that
any new employees can easily access
this information and respond
appropriately and as quickly as possible
to ensure the continued safety of
entrants. For example, if the original
entry supervisor is replaced by a new
entry supervisor halfway through entry
operations, the new entry supervisor
can refer to the entry permit for this
information.
Paragraph (f). Final § 1926.1206(f),
which is substantively the same as
§ 1910.146(f)(5), requires the employer
to record the names of each attendant.
Final § 1926.1206(f) differs from
§ 1910.146(f)(5) only in that it clarifies
that the name of ‘‘each person,’’ rather
than ‘‘the person,’’ must be recorded on
the entry permit. There is often more
than one attendant during the course of
entry operations, so this requirement
would facilitate identifying attendants
quickly and easily, thereby expediting
communications with them, which is
necessary for the performance of safe
PRCS entry operations, and for the
performance of specified duties during
emergency situations. When a new
attendant replaces the previous one, the
employer must make it clear on the
permit which attendant is on duty, such
as by crossing out the previous
attendant’s name, so that there is no
confusion about the identity of the
current attendant Without this
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requirement, the employer could waste
valuable time finding the attendant
responsible for protecting authorized
entrants during an emergency.
Paragraph (g). Final § 1926.1206(g),
which is nearly identical to
§ 1910.146(f)(6), requires the employer
to record the name of each employee
currently serving as entry supervisor.
The same reasons for requiring the
names of the attendants apply for
requiring the name of the entry
supervisor here: it provides an assured
means of distinguishing these important
individuals quickly and easily so that
employees may alert them of a
developing hazard, and it provides the
opportunity for these individuals to
review the permit and entry conditions
to ensure that entry conditions remain
safe. The general industry standard
requires a space for each entry
supervisor’s name, which implies that
the entry supervisor names will be filled
in, but in this final rule OSHA is
modifying paragraph (g) to make that
requirement explicit: The employer
must ensure that the name of each entry
supervisor is entered into that space. As
with the changes to the attendants, the
employer must ensure that the current
supervisor is identified as such when
one supervisor replaces another.
Paragraph (h). Final § 1926.1206(h),
which is identical to § 1910.146(f)(7)
and corresponds to proposed
§ 1926.1214(a)(2)(i)(A), requires the
employer to record the hazards
associated with the planned confined
space entry operations. This list must
include all hazards, regardless of
whether the employer protects the
authorized entrants from the hazards by
isolation, control, or personal protective
equipment. Providing this list will make
it clear which hazards the employer
already identified so that the entrants
can confirm that they received training
to work around such hazards, and will
know to bring any other developing
hazard to the attention of the entrance
supervisor immediately.
Paragraph (i). Final § 1926.1206(i),
which is identical to § 1910.146(f)(8)
and corresponds to proposed
§ 1926.1214(a)(2)(i)(B), requires the
employer to record the procedures used
to isolate or control the hazards prior to
entry. This information must be
consistent with the requirements
specified in final § 1926.1204(c), and
must include the methods used to
isolate or control the hazards, the type
of personal protective equipment
provided, the methods used to monitor
each hazard (including the use of earlywarning systems, if required by final
§ 1926.1204(e), and how frequently each
hazard is to be monitored). Note that
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under final § 1926.1204(e), employers
must use continuous monitoring of
atmospheric hazards unless the
employer demonstrates that periodic
monitoring is sufficient. The permit
need only refer to the procedures used
to meet the requirements of this
paragraph in sufficient detail to enable
employees to determine what measures
they must take, and how to perform
those measures.
One commenter urged OSHA to
require employers to identify the
name(s) of the person(s) who performed
all of the hazard-isolation or control
procedures listed on the permit
pursuant to § 1926.1206(i), such as the
person(s) who operated a ventilation
machine to control an atmosphere (ID–
0625, p. 4). OSHA notes that employers
must already include the names or
initials of the person performing
monitoring under final § 1926.1206(k).
To the extent that the commenter
intended to ensure the accuracy of the
tests and measurements associated with
the isolation or control procedures,
OSHA notes that the entry supervisor
must already verify the accuracy of this
information (§ 1926.1210(b)). Therefore,
OSHA concludes that, in the absence of
additional evidence to indicate that
these records would provide a
discernible safety benefit, the additional
records suggested by the commenter are
not necessary.
Paragraph (j). Final § 1926.1206(j),
which is identical to § 1910.146(f)(9),
requires the employer to specify the
acceptable entry conditions. The list of
acceptable entry conditions includes
energy control considerations and
conditions such as the permissible
levels allowed for oxygen, flammable
gases and vapors, other hazardous
substances during PRCS entry.
Additional information regarding PRCS
conditions includes, for example, the
methods used to maintain a water
hazard at safe levels. Another example
included in the NPRM is when an
employer decides to use PPE to protect
employees from an atmospheric hazard,
the acceptable conditions must include,
at a minimum, the type of PPE the
employees will use (such as type of
respirator), and the levels at which the
PPE would protect the employees from
the atmospheric hazard. OSHA requires
the employer to list the acceptable
conditions on the permit so that the
authorized entrants, attendants, and
entry supervisors have this information
on hand at the worksite, thereby
ensuring safe entry operations.
This provision also requires
employers, when applicable, to provide
the ventilation-malfunction
determinations made in paragraph (c)(5)
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of final § 1926.1204. As explained in the
proposed rule, and above in the
discussion of final § 1926.1204(c)(5),
some permit spaces may require
ventilation to control the atmospheric
hazards at levels that are below the
levels at which they are harmful to
entrants so that entrants will have time
to exit the PRCS safely (72 FR 67365).
In these spaces, the employer will be
responsible for identifying that level
and monitoring the permit-space
atmosphere to detect any increase of the
potentially hazardous substance. The
Agency’s requirement that the employer
include these determinations on the
permit informs employees (for example,
entry supervisors, attendants, and
authorized entrants) about the time
required for the entrants to evacuate the
PRCS should the ventilation system fail,
and allows authorized entrants,
attendants, and entry supervisors to
respond quickly to any deviations in
these conditions, including ventilationsystem failure.
OSHA notes, as it did in the
explanation of this provision in the
general industry standard, that there is
likely to be overlap between this
requirement to list the acceptable entry
conditions and the separate requirement
in § 1926.1206(i) to identify the hazardcontrol or elimination measures that the
employer must also list on the permit
(58 FR 4509 (Jan. 14, 1993)). The
Agency anticipates that employers may
elect to combine these two elements
when filling out the permit, and such an
approach is permissible so long as the
employer includes all of the relevant
information in some form that the
authorized entrant, attendant, or entry
supervisor can identify quickly.
Paragraph (k). Final § 1926.1206(k),
which is nearly identical to
§ 1910.146(f)(10), requires the employer
to record the dates, times, and results of
the tests and monitoring performed, and
the names or initials of the individuals
who performed each test. Entering the
testing and monitoring results in the
permit enables the entry supervisor,
attendants, and authorized entrants to
determine readily whether acceptable
entry conditions exist with regard to
atmospheric hazards in the PRCS. The
employer also could use this
information to identify atmospheric
conditions within the PRCS that need to
be monitored frequently because
atmospheric conditions tend to rise
rapidly to hazardous levels. For
example, if the oxygen concentration is
19.6 percent, the attendant and entrants
should be alert for signs of oxygen
deficiency, such as increased breathing
rate, dizziness, rapid heartbeat, and
headache. Furthermore, documentation
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25435
of test results on the permit also
facilitates the review of canceled
permits required under paragraph
(d)(14). If testing indicates that levels of
hazardous substances are increasing, the
increased hazard will be easy to
recognize through a review of the
recorded test results on the canceled
permit.
Listing the names of those who
performed the testing identifies a point
of contact to which entry supervisors
and attendants can direct questions they
may have regarding the results and
procedures. The date and time (or, for
continuous monitoring, a time period)
would provide a basis for detecting
dangerous trends in atmospheric
conditions that may indicate that more
frequent observation of the atmospheric
data is necessary.
The single difference between the
final rule and § 1910.146(f)(10) is that
the general industry provision requires
documentation of ‘‘initial and periodic
testing,’’ whereas final paragraph (k) of
this final standard requires
documentation of the results of all
‘‘tests’’ and ‘‘monitoring.’’ OSHA made
these changes to address a significant
difference between this final rule and
§ 1910.146: This final rule generally
requires continuous monitoring,
whereas § 1910.146 only requires
periodic testing. For further explanation
of this change, see the discussion to
final § 1926.1204(e).
Consistent with data collection from
continuous monitoring under
§ 1910.146, the continuous monitoring
values recorded on the entry permit are
‘‘real time’’ concentrations. See
December 10, 1996, letter to Michael
Coleman, available at www.osha.gov.
Although the final standard does not
specify the frequency with which the
employer must record continuous
monitoring measurements, from a
compliance perspective, the quantity of
data entered on the permit must
indicate the number of times the entry
supervisor or other entrant examined
the monitoring data. These
measurements must be recorded with
sufficient frequency to demonstrate that
the permit space was monitored such
that the employee could identify a
change in atmosphere or other potential
hazard in time to allow entrants to exit
the permit space safely (See also
discussion of § 1926.1203(e)(2) and
1926.1204(e)(2).) For continuous
monitors with alarms, employers must
record each time the alarm is triggered.
Employers also must include the initial
entry-monitoring results on the entry
permit for the reasons explained above;
these results also would serve as a
baseline for subsequent measurements.
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See December 10, 1996, letter to
Michael Coleman, available at
www.osha.gov.
Paragraph (l). Final § 1926.1206(l),
which is identical to § 1910.146(f)(11),
requires the employer to identify the
rescue and emergency services required
by this final rule, and the means by
which these services will be summoned
when needed. Identification of these
services and the means for summoning
them enables attendants to summon the
appropriate service immediately in case
of emergency. In some cases, an
employer must include pertinent
information, such as communication
equipment and emergency telephone
numbers, on the permit to sufficiently
identify the means by which the rescue
or emergency services will be
summoned. The inclusion of this
specific information would allow
attendants to avoid errors and delays in
contacting the rescue service.
Paragraph (m). Final § 1926.1206(m),
which is identical to § 1910.146(f)(12),
requires the employer to record all of
the methods of communication used
between authorized entrants and
attendants during entry operations.
OSHA notes that establishing a routine
for maintaining contact between
attendants and authorized entrants
would help attendants detect problems
within the PRCS. OSHA anticipates that
the method of communication chosen
may vary according to the
circumstances of the particular
workplace; however, the methods
chosen must enable the attendants and
the entrants to maintain effective and
continuous contact. OSHA notes that,
while such communication will
normally be achieved through speech,
other methods, such as tapping on a
wall, may be acceptable as long as it
achieves effective and continuous
contact. See July 30, 1993, letter to Julie
Emmerich, available at www.osha.gov.
Paragraph (n). Final § 1926.1206(n),
which is identical to § 1910.146(f)(13),
requires the employer to record the
equipment it provides in accordance
with the requirements of this final rule.
This equipment would typically
include, for example, personal
protective equipment, testing
equipment, communications equipment
(including equipment needed to assess
entrants’ status in the space), alarm
systems, rescue equipment, and other
equipment that the employer would
provide to ensure compliance with
paragraph (d)(4) of final § 1926.1204
(personal protective equipment) or any
other part of the standard. This
requirement provides employees with a
ready reference to the equipment
required for safe entry operations.
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Paragraph (o). Final § 1926.1206(o),
which is substantively identical to
§ 1910.146(f)(14), requires the employer
to record any additional information
needed to ensure safe confined space
entry operations. OSHA amended the
language in § 1910.146(f)(14) slightly for
clarity and conciseness. As OSHA
explained in the preamble to the general
industry standard, this provision is
necessary for employee protection due
to ‘‘the wide-ranging types of hazards
found in permit-required confined
spaces, there are many hazards that
cannot be adequately addressed with
any precision in a generic permit space
standard’’ (58 FR 4510 (Jan. 14, 1993)).
Examples of the information required by
paragraph (o) may include: Problems
encountered in the PRCS; problems that
an attendant, entry supervisor, or
authorized entrant believes may be
relevant to the safety of the entrants
working in the space; or any other
information that may be relevant to
employee safety under these conditions.
Paragraph (p). Final § 1926.1206(p),
which is identical to § 1910.146(f)(15),
requires the employer to record
information about any other permits,
such as for hot work, issued for work
inside the confined space. If the
employer identifies additional permits,
these additional permits may be, but are
not required to be, attached to the entry
permit to provide information about the
activity covered by the permit to
employees involved in the entry
operations so they can take appropriate
precautions.
Section 1926.1207—Training
Final § 1926.1207 requires employers
to train each employee who performs
work regulated by this standard, and
specifies the requirements of that
training. The provisions in final
§ 1926.1207 are substantively similar to
the provisions in the general industry
confined spaces rule at § 1910.146(g).
The substance of the training provisions
in the proposed rule was similar to, but
organized differently than, the training
provisions in the general industry rule.
The final rule includes a few provisions
from the proposed rule to provide
clarity and to ease documentation, as
explained below, but follows the
language and organization of the general
industry standard. Proposed
§§ 1926.1208, 1926.1213, 1926.1216,
and 1926.1217 separated the training
requirements based on the type of
confined space involved. One
commenter asserted that, in general, the
training requirements were too scattered
throughout the proposed rule (ID–099,
p. 4). By organizing the training
provisions according to the training
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provisions of the general industry
confined spaces standard at
§ 1910.146(g), OSHA placed the training
requirements together in one section.
Paragraph (a). Final § 1926.1207(a)
sets forth the requirement, also found in
§ 1910.146(g)(1), that employers must
train each employee who performs work
regulated by this standard. OSHA
modified this provision from
§ 1910.146(g)(1) to include some
language from the proposed rule and to
clarify two aspects of this requirement:
(1) The employer must train each
employee; and (2) the employer must
provide training at no cost to the
employee. Final § 1926.1207(a)(1) refers
to ‘‘each employee’’ rather than ‘‘all
employees’’ to emphasize that an
employer’s responsibility in this area
flows separately to each employee. The
provision of training at no cost is
implicit in the general industry
standard, and is consistent with OSHA’s
longstanding policy regarding employer
responsibility for training. See, e.g., 29
CFR 1926.1430(g)(3) (training under the
Cranes & Derricks in Construction
standard), § 1910.1001(j)(7)(iv) (asbestos
awareness training for employees who
perform housekeeping operation in an
area that contains asbestos), and June
25, 1991, Memorandum to Regional
Administrators, # 20315 (training under
the HAZWOPER standard, 1910.120),
available at www.osha.gov.
Paragraph (a) of the final rule also
requires employers to provide training
so that employees who perform work
regulated by part 1926, subpart AA,
acquire the understanding, knowledge,
and skills necessary for the safe
performance of the duties assigned
under that section, including the safe
operation of equipment and the proper
use of PPE. Sections 1926.1208,
1926.1209, 1926.1210, and 1926.1211 of
this final rule specify in detail the
duties of authorized entrants,
attendants, entry supervisors, and
rescue service personnel. Paragraph (a)
requires the training to impart the
understanding, knowledge, and skills
necessary for the safe performance of
the duties assigned under those
sections. OSHA believes that the
training employers provide employees
under this provision will enable the
employees to understand their duties
under this standard, as well as the
hazards posed by permit spaces, and to
properly use equipment and PPE in a
PRCS. Therefore, this training will
enable employees to safely perform their
requisite PRCS duties.
In this paragraph, the Agency is
requiring the employer to provide
whatever training is necessary to
achieve the goal of safe performance of
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an employee’s duties. The performance
language used in paragraph (a) will
allow the employer to develop and
implement the most effective confined
space training program to meet the
needs of the specific workplace. By
requiring training of employees in
§ 1926.1207, and by specifying what
those duties are in the relevant sections,
the final rule sets forth requirements
regarding whom employers train, as
well as the content of the training.
This paragraph also incorporates a
requirement found in proposed
§ 1926.1209(d)(1), which specifies that
the training must result in an
understanding of the hazards in the
permit space(s), and the method(s) used
to isolate, control, or in other ways
protect employees from the hazards. For
example, if an authorized entrant enters
the space to isolate an identified hazard
or to set up ventilation to control an
atmospheric hazard, the employer must
train the employee not only in
accordance with the PRCS entry
requirements, but also to perform the
tasks necessary to isolate and control
the specific hazards in accordance with
other appropriate OSHA requirements
applicable to construction. The
employer also must train each employee
who enters the space thereafter to
understand how the employer isolated
or controlled any hazards in the space.
OSHA believes that the training
employees receive under this provision
will enable them to associate the signs,
symptoms, and characteristic effects
(discussed elsewhere in this preamble)
to the failure of methods to control or
isolate the hazards, and to alert them so
that do not inadvertently disturb the
isolation or control mechanisms.
Therefore, this training will enable
employees to safely perform their duties
while working in the PRCS, and to
respond appropriately if the hazardprotection methods fail.
Additionally, final § 1926.1207(a)
includes the requirement, found in
proposed § 1926.1209(d)(2), that, for
employees not specifically authorized to
perform entry rescue, their training
must result in an understanding of the
dangers of attempting entry rescue. This
aspect of the training need not be
extensive, as its purpose is to prevent
exposure to permit-space hazards by
simply keeping all employees who are
not authorized to perform entry rescue
out of such spaces. OSHA prohibits
such entry precisely because it is likely
to increase the risks of further injury to
both the would-be rescuer and the
employee requiring rescue. In final
§ 1926.1204(a) and (i), the Agency also
requires entry employers to take action
to prevent all unauthorized entry, but
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the training required by final paragraph
(a) remains crucial to overcome the
inclination of many employees to
attempt to rescue a trapped colleague. If
employees do not fully appreciate the
dangers involved, their actions might
also pose a danger to those employees
designated to provide rescue.
Finally, some commenters asserted
that the training requirements in this
final rule should require employers to
train entrants on the use of gas, propane,
and diesel-powered equipment and
chemical-cartridge respirators (ID–025,
p. 3; ID–095, p. 3). Final § 1926.1207(a)
requires employers to ensure that
employees acquire the knowledge and
skill to safely perform their duties,
which includes training employees on
how to use all equipment used in the
PRCS.
Paragraph (b). Final § 1926.1207(b),
which is substantively similar to
§ 1910.146(g)(2), requires the employer
to provide training to each employee
covered by this standard, as specified by
paragraphs (b)(1)–(b)(5). One commenter
requested that OSHA clarify that the
employer must provide this training in
a language understood by the employee
(ID–140, p. 5). OSHA designed the
training requirements in final
§ 1926.1207 to ensure that employees
performing work regulated by this final
rule understand the hazards so that they
can take necessary precautions to
perform their work safely. Therefore, the
employer must provide this training in
a language the employee understands,
and ensure that the employee
comprehends the training, to achieve
the purpose of the training
requirements. Final § 1926.1207(b)(1)
incorporates the requirement that
training be in both a language and
vocabulary that the employee
understands, which is consistent with
OSHA’s policy for all OSHA training
requirements. See April 28, 2010, OSHA
Training Standards Policy Statement,
available at www.osha.gov. OSHA views
this policy as applicable to all training
requirements in all OSHA standards,
but is adding the language in this
standard for clarity.
Final § 1926.1207(b)(2)–(b)(4) require
that the employer provide training
before assigning the employee duties
covered by this final standard, when
there is any change in duties, and
whenever there is a change in permit
conditions that present a hazard for
which the employee did not previously
receive training. These requirements are
substantively identical to
§ 1910.146(g)(2)(i)–(g)(2)(iii). OSHA
believes the requirements in final
§ 1926.1207(b)(2)–(b)(3) are necessary to
ensure that employers provide the
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training required by final § 1926.1207(a)
at the appropriate times, that is, prior to
exposure to confined space hazards.
Final § 1926.1207(b)(2), which is
identical to § 1910.146(g)(2)(i), requires
employers to initially train their
employees before assigning them to
perform duties under this standard.
Accordingly, the employer must ensure
that specified employees (that is, entry
supervisors, attendants, authorized
entrants, and rescue-service employees)
receive the training required by final
§ 1926.1207(a) prior to performing
assigned PRCS duties. This requirement
ensures that employers train these
specified employees regarding PRCS
hazards before the employer exposes
authorized entrants to these hazards.
Final § 1926.1207(b)(3) and (b)(4) are
substantively identical to the general
industry standard at § 1910.146(g)(2)(ii)
and (g)(2)(iii). They address the issue of
refresher training. Final paragraph (b)(3)
requires training before there is a change
in assigned duties. Such changes could
be the result of new equipment or
techniques introduced into the entry
operations, promotions, or simple
reassignments. If an employee
previously received training in the new
duties and the employer ensures that
the employee is still familiar with the
previous training, then the employer
need not conduct additional training
under this paragraph, provided the
employer has no evidence that there are
inadequacies in the employee’s
knowledge or use of the relevant permitspace procedures. If there is evidence
that such inadequacies exist, the
employer must retrain the employee
under final paragraph (b)(5).
Paragraph (b)(4) similarly requires
retraining if there is a change in permitspace entry operations that presents a
hazard for which an employee did not
previously receive training. This
paragraph changes the phrase ‘‘permit
space operations,’’ from the general
industry standard at
§ 1910.146(g)(2)(iii), to ‘‘permit space
entry operations’’ for the reasons
explained in the introduction to the
discussion of final § 1926.1204. One
commenter was unsure whether minor
revisions of procedures, such as an
increase in the use of mechanical
ventilation, would trigger the training
requirements of final § 1926.1207(b)(3)
(ID–099, p. 3). The relative significance
of the change in procedures does not
determine the need for additional
training; employers must ensure that
employees can perform their duties
safely, so any change in PRCS entry
procedures for which an employee did
not receive previous training would
necessitate training under this final rule
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to the extent it requires new knowledge
or skill by the employee.
Final § 1926.1207(b)(5) provides that
an employer must retrain an employee
whenever the employer has any
evidence that the employee has deviated
from PRCS entry procedures or
inadequacies in the employee’s
knowledge or use of these procedures.
This provision is substantively identical
to the general industry standard at
§ 1910.146(g)(2)(iv), but this final
provision clarifies that retraining must
occur when there is evidence of
deviation, a change from the phrase
‘‘reason to believe’’ in the general
industry standard. OSHA believes the
term ‘‘evidence’’ will be clearer than the
general industry language for both
employers and OSHA inspectors. By
making this revision, OSHA does not
intend to make a substantive difference
in the types of employee actions or
other factors that would trigger the
retraining requirement. Evidence of a
need for retraining may come from a
variety of sources, such as an
employee’s actions during, or prior to,
an entry, statements made that indicate
a lack of understanding of permit-space
entry procedures, reports of other
employees or third parties, or from other
incidents.
One commenter asserted that
requiring retraining after every
deviation is overly burdensome. (ID–
120, p. 3.) This commenter suggested
that OSHA require the employer to
establish a better line of communication
and coordination when the deviation is
not too severe. However, the commenter
did not suggest a means of identifying
the severity of a deviation. In light of the
hazards associated with confined
spaces, and the procedures
implemented to address those hazards,
the failure of even one employee to
follow the correct procedure can
adversely affect the safety of others.
OSHA, therefore, concludes that it is
necessary to retrain any employee who
deviates from the approved entry
procedures. This retraining must
provide the employee with the
knowledge and skills necessary for safe
performance of his or her confined
space duties in accordance with final
§ 1926.1207(a), although the employer
may restrict retraining to the limited
aspect of the employee’s overall
responsibility on which the employee
made the deviation. For example, if
employee failed to use a piece of
equipment properly, the retraining
could focus on the proper use of that
equipment, and need not focus on areas
unrelated to the deviation, such as the
hazards associated with the atmosphere
in the space.
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Paragraph (c). Final § 1926.1207(c),
which is identical to the general
industry standard at § 1910.146(g)(3),
requires an employer to establish that
the employee is capable of performing
his or her confined space duties
proficiently, and to provide any
supplemental training needed to make
the employee proficient. This provision
ensures that employees will not enter a
PRCS without being able to apply the
knowledge and procedures addressed in
their training. In other words, the
employer must determine that, for each
employee, the training is effective and
resulted in the employee being capable
of performing the required duties
proficiently.
Some commenters were unsure how
an employer can demonstrate that an
employee is proficient under final
§ 1926.1207(c) (ID–106, p. 2; –120, p. 3;
–152, p. 3). Final § 1926.1207(c) is a
performance-oriented measure that
provides employers with flexibility by
not requiring a particular way to
demonstrate proficiency.
Administration of a test or practical
examination are some examples of how
an employer may demonstrate an
employee’s proficiency.
Paragraph (d). Final § 1926.1207(d),
which is substantively similar to the
general industry standard at
§ 1910.146(g)(4), requires an employer
to ‘‘maintain training records,’’ as
opposed to the requirement in
§ 1910.146(g)(4) that employers
‘‘certify’’ training. This final paragraph
also requires employers to document the
names of employees trained, the
trainer’s name, and the dates of the
training performed, and to make these
records available for inspection by
employees and their authorized
representatives. Final § 1926.1207(d)
differs from the general industry
standard in that it provides more
flexibility in the documentation of
training, and it requires the retention of
this documentation.
The training-documentation provision
in final paragraph (d) requires only the
name of the trainer, not the trainer’s
signature or initials as required in the
general industry standard. Proposed
§ 1926.1209(d)(5) contained these more
flexible requirements, and OSHA
retained them in the final rule. This
documentation can take any form that
reasonably demonstrates the employee’s
completion of the training. Examples
include a record of test scores, a
photocopied card certifying completion
of a class, or any other reasonable
means. The employer may store these
records electronically so long as they are
readily accessible upon request. OSHA
recognizes that the turnover rate for
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employees on construction sites is
higher than in many other industries,
and that employees also are likely to
work at several different worksites
based on the type of work required. For
example, an employer could designate
an employee to be an authorized entrant
in several different confined spaces at
the same worksite, which may require
the employee to perform different
assigned tasks under various planned
conditions. In this situation, the
documentation must be readily
accessible to determine whether the
employee received the training
necessary to perform the various tasks
under the planned conditions.
Compliance with this provision will
help ensure safe conditions within the
PRCS by providing employers, and
OSHA, with an administrative tool that
they can use to confirm which
employees will be able to perform the
duties required by this standard. Section
1926.1207(d) requires, as the general
industry standard does, that these
training records must be available for
inspection by employees and their
authorized representatives. Permit-space
employees rely on their fellow
employees for safe entry operations, and
this provision provides that the training
records that document employees’
training status be available to those
employees and their representatives.
This requirement can be especially
important in the construction industry
due to the high level of employee
turnover and multiple employers
present at construction sites, including
different employers who conduct
simultaneous entry where one
employer’s lack of training for its
employees could jeopardize the fully
trained employees of a different
employer. Consequently, making these
records available for inspection by
employees and their representatives
provides an additional level review to
ensure that the employees received the
proper training and are ready to engage
in safe entry operations.
One commenter was unsure whether
the final standard would require an
employer to maintain the name of the
person that provides general confined
space training as well as ‘‘for the
specifics of this PCRS.’’ (ID–098, p. 2).
OSHA is uncertain of what training the
commenter is referring to. To the extent
that the commenter was referring to
training required by this final rule, final
§ 1926.1207(d) requires the employer to
record the name of the person who
conducted the training. To the extent
the commenter was referring to training
required by a different rule, the
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comment is not applicable to this
rulemaking.
As in this final rule, proposed
§ 1926.1219(c) required that employers
retain these training records for the time
the employee remains employed by
them. The general industry confined
spaces standard at § 1910.146(g)(4) does
not specify how long an employer must
retain the documentation. These
training records are a valuable resource
for tracking whether an employee
received the necessary training. If these
records are to serve as a tool to confirm
employee training, the records must be
available during the period the
employee is working for the employer.
Once the employee ceases to work for
the employer, there is no longer a
significant benefit in tracking this
information. Therefore, OSHA is
keeping in the final rule the proposed
requirement that an employer must
retain training documentation until the
employee ceases to work for the
employer.
One commenter had several concerns
about the retention of training records.
First, the commenter asserted that this
retention requirement is an unnecessary
burden on employers (ID–099, p. 4).
OSHA’s experience under the
documentation requirements of other
standards indicates that employers
typically use existing training records to
meet these documentation requirements
and, as explained above, final
§ 1926.1207(d) allows significant
flexibility in the form of the records and
how an employer must store them. Next,
the commenter was unsure whether
final § 1926.1207(d) requires an
employer to maintain training records
when the employer lays off an employee
and then rehires him or her (id). In the
event an employee ceases to work for
the employer, final § 1926.1207(d) does
not necessarily require the employer to
continue to maintain or store the
training records; however, there is an
incentive for the employer to retain
these records if there is a possibility that
the employer might re-hire the
employee, as in the example offered by
the commenter. The standard does
require the employer to maintain a set
of training records for all employees
performing confined space work,
regardless of when the employer hired
the employee, so if the employee is
rehired the employer would be required
to produce that employee’s training
records or retrain the employee. This
commenter also asserted that employers
should be free to establish their own
policy for retaining training records (id).
Final § 1926.1207(d) leaves the
employer with discretion in developing
its training-documents retention policy,
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and requires retention only until the
employee ceases to work for the
employer.
Another commenter asserted that final
§ 1926.1207(d) should require
employers to keep these training records
on site (ID–031, p. 1). OSHA finds that
such a requirement would be an
unnecessary burden on employers. The
purpose of the final requirement is to
ensure that employers can document
their employees’ training in case an
issue arises with respect to the training
(e.g., whether the employee received
training, whether the training was
adequate). Though the training records
need to be readily available, it is not
necessary for the employer to have
immediate access to these records at the
site. Requiring the employer to maintain
the records and make them readily
accessible for inspection, even offsite
and/or in electronic form, is sufficient to
accomplish the purpose of the
provision.
Section 1926.1208—Duties of
Authorized Entrants
An authorized entrant is an employee
authorized by an entry supervisor to
enter a permit space. As the Agency
noted in the preamble to the general
industry standard, ‘‘[T]his is the person
who faces the greatest risk of death or
injury from exposure to the hazards
contained within the space’’ (58 FR
4515 (Jan. 14, 1993)). Because of the
dangers associated with confined space
work, employers must prepare the
entrants properly to perform duties so as
to assure their own safety and the safety
of their fellow entrants. The employer
accomplishes this purpose by means of
training, communication of effective
work rules, and internal administration.
Final § 1926.1208 is nearly identical
to the general industry requirements in
§ 1910.146(h), except for minor editorial
revisions and a revision in the
introductory text to improve clarity. The
introductory language in § 1910.146(h),
which sets out requirements for
authorized entrants, refers generally to
the duties of ‘‘the employer.’’ OSHA
changed the introductory language to
refer to ‘‘the entry employer’’ to clarify
how this rule applies on multi-employer
worksites. This is a non-substantive
change, however, because the
provisions in § 1926.1208 apply to each
employer establishing the permit
program for a permit space or allowing
its employees to enter under another
employer’s program.
The authorized entrant duties also are
substantively the same as the duties
specified by proposed § 1926.1211(g),
except as noted in the discussion below.
The Agency did not receive any
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25439
comments specifically addressing that
provision of the proposed rule.
Paragraph (a). Final § 1926.1208(a),
which is substantively identical to the
general industry standard at
§ 1910.146(h)(1), requires an employer
to ensure that an authorized entrant is
familiar with and understands the
potential hazards associated with each
particular confined space entry,
including the mode, signs or symptoms,
and the consequences of exposure to
these hazards. The final rule uses
‘‘familiar with and understands,’’ rather
than the ‘‘knows’’ used in the general
industry standard, to emphasize the
employee comprehension required by
the rule. This knowledge and
understanding affords authorized
entrants with the information they need
to protect themselves from these
hazards, including recognition of the
effects of these hazards should exposure
occur.
Paragraph (b). Final § 1926.1208(b),
which is substantively identical to the
general industry standard at
§ 1910.146(h)(2), requires an employer
to ensure that an authorized entrant
uses required equipment properly.
OSHA believes that proper use of such
equipment is essential for working
safely inside a PRCS and preventing any
rescue operation from harming the
incapacitated authorized entrant. Many
employers can meet this requirement
through implementation of safe work
practices, training, and effective
enforcement of those practices.
Paragraph (c). Final § 1926.1208(c),
which is substantively identical to the
general industry standard at
§ 1910.146(h)(3), requires an employer
to ensure that an authorized entrant
communicates effectively with the
attendant to facilitate the attendant’s
adequate assessment of the entrant’s
status and timely evacuation (see also
the discussion attendant-entrant
communications in the explanation of
§ 1926.1206(m)). The authorized
entrant’s communication with the
attendant provides the attendant with
information regarding any problems the
entrant is having, which the attendant
can use to determine whether there is a
need to evacuate the PRCS.
Paragraph (d). Final § 1926.1208(d),
which is similar to the general industry
standard at § 1910.146(h)(4), requires an
employer to ensure that an authorized
entrant alerts the attendant whenever
one of the following circumstances
arises: (1) There is a warning sign or
symptom of exposure to a dangerous
situation; or (2) the entrant recognizes a
prohibited condition. In some instances,
a properly trained authorized entrant
may be able to recognize and report his
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or her own symptoms, such as
headache, dizziness, or slurred speech,
and take the required action. In other
cases, the authorized entrant, once the
effects begin, may be unable to
recognize or report them. In these latter
cases, this provision requires that other,
unimpaired, authorized entrants in the
PRCS, who employers must properly
train to recognize signs, symptoms, and
other hazard-exposure effects in other
authorized entrants, report these effects
to the attendant. Reporting these effects
will ensure the safety of the authorized
entrants by removing them from the
hazardous conditions in a timely
manner.
Paragraph (d)(1) differs slightly from
the corresponding general industry
provision at § 1910.146(h)(4)(i). The
general industry provision requires an
employer to ensure that an authorized
entrant alerts the attendant when ‘‘the
entrant recognizes’’ a dangerous
situation. Final § 1926.1208(d)(1)
requires an employer to ensure that an
authorized entrant alerts the attendant
whenever ‘‘there is . . . a dangerous
situation.’’ OSHA made this change to
make the requirement objective, and not
contingent on the subjective belief of an
authorized entrant about the level of
danger. For example, if an entrant
knocks over a container of sealant that
was not scheduled to be opened until
later, thereby releasing hazardous fumes
into an inadequately ventilated permit
space, the final rule makes it clear that
the entrant has a duty to report the
incident to the attendant immediately.
The employer must ensure that the
entrant is adequately prepared to
identify such an incident as a dangerous
situation, and the entrant’s failure to do
so would not excuse the entrant or
employer from that duty.
By using language closer to that in the
general industry, OSHA has deviated
slightly from the equivalent requirement
in the proposed rule, § 1926.1211(g)(3),
which required the authorized entrant
to alert the attendant of ‘‘any sign,
symptom, unusual behavior, or other
effect of a hazard.’’ OSHA retained the
reference to a ‘‘symptom’’ from the
proposed rule, but believes that the
reference to the ‘‘dangerous situation’’
in the general industry standard
provides slightly broader coverage than
the proposed language. Under the
general industry standard and this final
rule, attendants would need to be aware,
for example, of an entrant experiencing
a heart attack or other condition
unrelated to the conditions in the
confined space, but which might
nevertheless affect that entrant and/or
other entrants in the space. However,
the general industry language
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incorporated into the final rule provides
sufficient specificity regarding the
conditions covered by the provision,
and employers and authorized entrants
are familiar with the language, having
used it for years in general industry
work (and in construction work if they
chose to voluntarily follow the general
industry requirements). Other examples
of exposure to a dangerous situation that
an authorized entrant must report to the
attendant under paragraph (d)(1) or
(d)(2) include: Low measurements of
supplied air in a closed-respirator
system; fraying or snagging of a retrieval
line; a leak allowing an unidentified
substance to enter the confined space
through the walls of the space or from
a container brought into the space;
sparks or other evidence of potential
electrical malfunction (particularly in
areas where flammable gases are
present); and any changes identified by
the entrant in his or her physical
condition or the physical condition of
another entrant (e.g., dizziness, chest
pains, vertigo, breathing difficulty,
trembling, etc.).
Paragraph (e). The introductory
language in final § 1926.1208(e), which
is identical to the general industry
standard at § 1910.146(h)(5), requires an
employer to ensure that an authorized
entrant exits from the confined space
whenever one of circumstances
identified in final § 1926.1208(e)(1)(e)(4) arises.
Final § 1926.1208(e)(1), which is
similar to the general industry standard
at § 1910.146(h)(5)(i), requires an
employer to ensure that an authorized
entrant exits from the confined space
whenever the attendant or entry
supervisor orders an evacuation. It is
essential that the authorized entrants
quickly comply with the command to
evacuate, particularly because the
attendant or entry supervisor may be
aware of a hazard that the authorized
entrant has not detected. Even when
there is disagreement between the entry
supervisor and attendant as to whether
to evacuate, this provision requires the
employer to enforce orders to evacuate
given by either the entry supervisor or
the attendant. OSHA believes this
provision is necessary because
emergencies within a confined space are
time sensitive, and the entry supervisor
and attendant may have different
information regarding the types or
severity of the hazards in the PRCS.
Final § 1926.1208(e)(2), which is
similar to the general industry standard
at § 1910.146(h)(5)(ii), requires an
employer to ensure that an authorized
entrant exits from the confined space
whenever there is a warning sign or
symptom of a dangerous situation. The
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phrase ‘‘warning sign or symptom of a
dangerous situation’’ has the same
meaning as in final paragraph (d) of this
section. As with final paragraph (d), and
for the same reason, final paragraph
(e)(2) differs slightly from the
corresponding general industry
provision at § 1910.146(h)(5)(ii) because
final § 1926.1208(e)(2) requires an
employer to ensure that an authorized
entrant exits the space whenever ‘‘there
is . . . a dangerous situation,’’ rather
than whenever ‘‘the entrant recognizes’’
a dangerous situation. This provision
requires authorized entrants to exit the
PRCS as quickly as possible in such
cases because the safety procedures
delineated in the permit are designed to
work in the context of clearly defined
acceptable entry conditions, and
deviations from the planned measures
therefore require timely evacuation to
ensure the health and safety of the
entrants pending evaluation of the
dangerous situation.
Final § 1926.1208(e)(3), which is
identical to the general industry
standard at § 1910.146(h)(5)(iii),
requires an employer to ensure that an
authorized entrant exits from the
confined space whenever the entrant
detects a prohibited condition, as
defined in final § 1926.1201. This
requirement ensures that employees exit
the confined space if there is any
prohibited condition, such as a
hazardous atmosphere or uncontrolled
physical hazard, in the space. Exiting
the space upon detecting a prohibited
condition will prevent serious injury or
death to the entrants. Other examples of
prohibited conditions include, but are
not limited to, the emergence of a new
hazard, a hazard level that exceeds
acceptable entry conditions, or personal
protective equipment that is not
working as planned. In such
circumstances, authorized entrants must
exit the space to protect their health and
safety.
Final § 1926.1208(e)(4), which is
identical to the general industry
standard at § 1910.146(h)(5)(iv), requires
an employer to ensure that an
authorized entrant exits the confined
space whenever an evacuation alarm
sounds. Examples of these alarms
include, but are not limited to,
atmospheric or engulfment-hazard
monitor alarms or alarms activated by
an authorized entrant or other
employee. This provision ensures that
entrants in a PRCS exit the space in a
timely manner upon activation of an
evacuation alarm warning them of an
impending danger, thereby preventing
serious injury or death to the entrants.
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Section 1926.1209—Duties of
Attendants
In final § 1926.1209, OSHA sets out
the duties of the attendant required by
final § 1926.1204(f) as part of every
permit program. The general industry
standard recognizes the need for an
attendant outside permit spaces, and the
preambles for final § 1926.1204(f) and
the general industry standard at 58 FR
4517 (Jan. 14, 1993), explain the need
for these attendants. One of the major
problems in permit space entry
operations is that, if an entrant within
the space is injured or incapacitated in
the space, he or she cannot normally be
seen from outside the space, so the
attendant is critical to recognizing
quickly any injury or incapacitation so
that the employer can initiate the
applicable rescue operation as soon as
possible. The attendant also plays a
critical role in protecting employees
inside the confined space from
unauthorized entries and potentially
hazardous conditions outside the
confined space that could affect the
workers inside the confined space.
The provisions in final § 1926.1209
are substantively identical to the
provisions in the general industry
confined spaces rule, except as noted
below. The introductory language to
§ 1910.146(i) refers to ‘‘the’’ employer.
As in the introductory language for
many of the provisions in the final rule,
OSHA refers to ‘‘the entry employer’’ in
the introductory language of
§ 1926.1209 to clarify how this rule
applies on multi-employer worksites.
The attendant duties are also similar
to the duties specified in proposed
§§ 1926.1210(f) and 1926.1211(f). The
final rule does not include a paragraph
found in proposed § 1926.1211(f)(9),
which expressly prohibited attendants
from entering a confined space to
perform rescue. OSHA did not include
this paragraph because the prohibition
is clear from the general industry
standard language incorporated into the
final rule, i.e., employers must ensure
that attendants never enter a confined
space, whether it is to perform rescue or
for any other purpose, unless another
person assumes the duties of the
attendant, and the attendant is properly
trained for rescue activity. See
§ 1926.1209(d) and its Note. In this way,
the final rule provides more flexibility
to employers than the proposal.
Paragraph (a). Final § 1926.1209(a),
which is almost identical to the general
industry standard at § 1910.146(i)(1)
(except for non-substantive
clarifications), requires an employer to
ensure that each attendant is familiar
with hazards that he or she may
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encounter during entry, as well as the
signs and consequences of such
exposures. Section 1910.146(i)(1)
requires an employer to ensure that each
attendant ‘‘knows’’ the hazards that he
or she may encounter during entry.
OSHA replaced ‘‘knows’’ with ‘‘is
familiar with and understands’’ in the
final rule to emphasize that the element
of comprehension is critical to the
attendant’s ability to fulfill his or her
duties. Attendants must be able to
recognize when entry conditions in the
PRCS are unacceptable—that the system
of employee protection is
malfunctioning. Because attendants
would be able to easily communicate
with entrants and entry supervisors,
their recognition of deviations from
acceptable entry conditions, and of the
signs, symptoms, and characteristic
effects that indicate exposure to a
hazard, will enable a timely evacuation
from the PRCS. For additional
information concerning the signs and
symptoms of exposure, see the
discussion of § 1926.1208(d) in this
preamble.
Paragraph (b). Final § 1926.1209(b),
which is identical to the general
industry standard at § 1910.146(i)(2),
requires the attendant to be aware of the
potential behavioral effects of hazard
exposure to authorized entrants. While
there is overlap between this
requirement and the requirement to be
familiar with and understand signs and
symptoms of exposure, the same overlap
exists in the general industry standard
and OSHA is preserving the separate
requirements for consistency with the
general industry standard and to
emphasize the importance of
recognizing behavioral changes as
possible evidence of hazard exposure.
OSHA believes this requirement is
necessary because the attendant is likely
to be in a position to quickly recognize
deteriorating conditions within the
space and readily communicate the
need for an immediate evacuation. For
instance, subtle behavioral changes or
effects detected in an entrant’s speech,
or deviations in established
communication procedures, would alert
the attendant that it is necessary to
initiate the procedure to evacuate or
rescue the entrant from the space.
Paragraph (c). Final § 1926.1209(c),
which is identical to the general
industry standard at § 1910.146(i)(3),
requires the attendant to maintain an
accurate count at all times of authorized
entrants, and to ensure that the method
used to identify entrants under final
§ 1926.1206 of this section is accurate.
In emergency situations requiring
evacuation, the count and identification
of entrants is necessary to determine
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25441
whether evacuation of all authorized
entrants from the space occurred, and
that no unauthorized entrants remain in
the space. This information can then be
relayed, if necessary, to rescue workers.
Paragraph (d). Final § 1926.1209(d),
which is identical to the general
industry standard at § 1910.146(i)(4),
requires the attendant to stay outside of
the permit space during entry
operations until he or she is relieved by
another attendant. One of the main
duties of the attendant is to recognize
hazardous conditions that are occurring
inside the PRCS, and to communicate
this information to rescue personnel in
emergency situations. The attendant is
also often the first (and sometimes only)
person to recognize prohibited
conditions or signs of hazardous
conditions within the space. If the
attendant was inside the space, the
attendant could become incapacitated if
an emergency occurred, or the entrants
are exposed to prohibited conditions,
and consequently rendered unable to
perform the duties that are necessary to
protect the other employees.
OSHA included a note to final
§ 1926.1209(d) that is substantively the
same as the note in the general industry
standard. OSHA reorganized the
sentence structure of the note in the
final rule to clarify that the attendant
cannot attempt rescue until properly
relieved, and then only if the attendant
is permitted to do so under the permit
program and adequately trained and
equipped for entry rescue. However, the
final rule permits the attendant to
perform non-entry rescue so long as the
attendant receives proper training to do
so. If the attendant is performing his or
her duties in multiple spaces, the
attendant also must order the entrants in
those other spaces to exit the spaces
while the attendant is involved in the
rescue, or ensure that another person
assumes the attendant duties for the
other spaces.
Paragraph (e). Final § 1926.1209(e),
which is nearly identical to the general
industry standard at § 1910.146(i)(5),
requires the attendant to communicate
with authorized entrants as necessary to
keep track of the entrants’ status and to
notify entrants if evacuation under final
§ 1926.1209(f) of this section is
necessary. OSHA believes that this
communication provides information
that the attendant needs to determine if
the entry can continue. For example,
subtle behavioral changes detected in
the entrant’s speech, or deviations from
set communication procedures, could
alert the attendant that it is necessary to
evacuate or rescue the entrant. This
requirement may assist the attendant in
fulfilling the duties to identify signs and
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symptoms of exposure or behavioral
changes (see paragraphs (a) and (b) of
this section). In addition, if the need
arises, the attendant must communicate
to the entrants an order to evacuate
because the entrants may not know that
there is an emergency.
In the final rule, OSHA requires the
attendant to stay in communication to
‘‘assess’’ the entrant’s status, rather than
to ‘‘monitor’’ it as required in the
general industry standard. While there
is no substantive difference between
these terms, OSHA uses ‘‘assess’’
because ‘‘monitor,’’ as defined in the
final standard, refers to the
identification and evaluation of hazards
in a confined space. Assessment
connotes an interactive duty in which
the attendant may ask questions of the
entrant, or ask the entrant to perform a
task so the attendant can evaluate the
entrant’s status.
As with the general industry standard,
the attendant’s ‘‘communication’’ with
the entrant may take different forms
depending on the limitations of the
particular permit space. In most
instances, the attendant could use voice
communication, including
communication by phone, walkie talkie,
or other device that provides a clear and
continuous means of communication
with the entrant. In other cases,
alternative methods, such as tapping on
the walls of the space to allow for
assessment through a pre-arranged code,
may be sufficient to satisfy
§ 1926.1209(e). See, e.g., July 30, 1993,
letter to Julie Emmerich.
Paragraph (f). Final § 1926.1209(f),
which is almost identical to the general
industry standard at § 1910.146(i)(6),
requires the attendant to assess the
activities and conditions inside and
outside the space to determine if it is
safe for entrants to stay in the space.
OSHA again uses ‘‘assess’’ instead of
‘‘monitor’’ for the same reason
discussed above in final § 1926.1209(e).
OSHA refers to ‘‘activities and
conditions’’ in the final rule, as opposed
to just ‘‘activities’’ in the general
industry standard, for internal
consistency within this provision. In the
same paragraph, OSHA requires the
attendant to evacuate the permit space
under any of the four ‘‘conditions’’
listed in final § 1926.1209(f)(1) through
(f)(4): (1) The attendant notices a
prohibited condition, (2) the attendant
identifies the behavioral effects of
hazard exposure in an authorized
entrant, (3) there is a condition outside
the space that could endanger the
authorized entrants, or (4) the attendant
cannot effectively and safely perform
the duties required under final
§ 1926.1209. Thus, it is necessary for the
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attendant to assess both the activities
and conditions affecting the entrants.
In the general industry standard,
OSHA requires the attendant to order
evacuation ‘‘if the attendant detects’’ a
prohibited condition, certain behavioral
effects, or a condition outside the space
that could endanger the entrants. See
§ 1910.146(i)(6)(i) through (i)(6)(iii).
OSHA did not include the quoted
language in the final rule because
existing conditions, not detection by the
attendant, trigger the duties in final
§ 1926.1209(f)(1) through (3). OSHA
believes that each of these conditions
represents potential precursors to
serious safety hazards that threaten the
health and well-being of employees
working in and near the PRCS, and the
employer has a duty to ensure that the
attendant detects them.
One of the conditions that triggers
evacuation is a situation that arises
outside the permit space that could
endanger the workers inside the space.
See final § 1926.1209(f)(3). This
requirement also is specified in the
general industry standard. Under final
§ 1926.1203(h)(4) and § 1926.1204(k),
the employer must develop and
implement procedures to coordinate
entry operations with other employers
working outside the confined space
when the activities of those employers
could, either alone or in conjunction
with the activities within a permit
space, foreseeably result in a hazard
within the confined space. In most
cases, employers will perform such
activities outside the space in close
proximity to the permit space, and the
attendant must be aware of the
applicable coordination procedures to
identify any deviation and evacuate the
entrants if the deviation makes it unsafe
for the entrants to remain in the permit
space. While not required to do so, the
attendant may take steps to stop
activities that do not conform to those
procedures, either directly or by
notifying the entry supervisor and the
controlling contractor, provided that
doing so does not interfere with the
attendant’s ability to fulfill the duties
required by § 1926.1209. However, if the
employer does not address the
potentially endangering activities
immediately, the attendant must
evacuate the entrants. Consider, for
example, a situation in which
employees are working inside a stormsewer permit space that is not isolated
from the general storm sewer system. If
someone within the view of the
attendant is setting up for an activity
that will discharge water into the
upstream portion of the storm sewer
system, the attendant must alert the
entry supervisor, and may call to the
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person setting up the discharge system
to request that the person not discharge
water into the storm sewer until the
employees in the storm sewer have
completed their work. If the potential
pumpers refuse to wait, then the
attendant must order the immediate
evacuation of the permit space. See
§ 1926.1209(f)(3).
Other examples of conditions or
activities outside a permit space that
would require the attendant’s attention
include the placement of potentially
hazardous items near a ventilation
intake source (e.g., an open container of
epoxy or gasoline-powered equipment
emitting exhaust), or physical
conditions that could affect the permit
space (e.g., heavy rains outside a belowground permit space).
One commenter asserted that
requiring an attendant to evaluate
confined space hazards inside and
outside a ground storage tank exposes
the attendant to both fall hazards and
struck-by hazards (ID–210, Tr. p. 223).
For example, a situation in which the
tank does not have a ground level
entrance, and the attendant must climb
a vertical fixed ladder to gain access,
exposes the attendant to a fall hazard.
However, this comment fails to
recognize that the standard would
permit the attendant to use electronic
monitoring and communications or
other means to fulfill the duties in
§ 1926.1209. Thus, depending on the
circumstances of the space, the
attendant might only need to physically
approach the entrance of the permit
space to perform non-entry rescue if
non-entry rescue is appropriate (the
retrieval equipment would not increase
the overall risk of entry and would
contribute to the rescue of the entrant),
and then only when assigned and
trained to do so. In addition, if the
attendant encounters a hazard not
covered by the confined spaces standard
(e.g., a fall hazard), the employer must
comply with the relevant OSHA
requirements that address the hazard
(e.g., 29 CFR part 1926, subpart M, for
fall hazards).
More importantly, it appears that the
commenter also is challenging the
general need for an attendant by
asserting that an attendant is
unnecessary when the employer is
performing work inside an aboveground storage tank (ID–210, Tr. p. 223).
In these situations, so long as the space
meets the definition of a permitrequired confined space, an attendant is
necessary for safe entry operations.
Although the person designated by the
employer as attendant is not assigned
the overall responsibility for employee
safety and health assigned to the entry
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supervisor, the attendant is a crucial
link in the communication chain
between the entry supervisor, rescue
operations, and the authorized entrants.
For additional explanation of the
importance of the attendant’s role, see
the introductory discussion of
§ 1926.1209.
It is extremely important that
attendants understand their duties, stay
in contact with the entrants, and remain
alert to conditions inside and outside
the PRCS. The attendant may be in the
best position to warn the entrants of
hazardous conditions developing
outside the space and impending danger
within the space, and to recognize
physical and behavioral changes in the
entrants that indicate that conditions
within the space may be deteriorating.
Should the entrant become
incapacitated, the attendant often is an
entrant’s only contact with individuals
outside the confined space. Therefore,
the attendant is necessary to detect
emergencies that develop in the space,
and to summon emergency assistance
before it is too late to prevent injury or
death to the entrant.
Another commenter suggested that
OSHA make it explicit that the
attendant must remain outside the
confined space when monitoring
atmospheric conditions of the confined
space (ID–132, p. 3). This additional
language is unnecessary because final
§ 1926.1209(d) already requires
attendants to remain outside the
confined space while fulfilling all of
their duties under this section,
including the duties specified in
§ 1926.1209(f).
Paragraph (g). Final § 1926.1209(g),
which is identical to § 1910.146(i)(7),
requires the attendant to call upon
rescue and other emergency services as
soon as he or she decides that
authorized entrants may need assistance
to escape from permit space hazards.
This provision is necessary to ensure
that rescue of authorized entrants occurs
as soon as possible to maximize their
chance of survival and limiting their
injuries, as well as minimizing risk of
injury to the rescue-service employees.
The Agency notes that in some
situations, the attendant may be the
person designated to perform non-entry
rescue and, therefore, may simply
commence that rescue. If other
personnel are necessary for non-entry
rescue, or if entry rescue is necessary,
then the attendant must summon those
personnel immediately.
One commenter noted that the
parallel language in proposed paragraph
§ 1926.1211(f)(6) did not specifically
require the attendant to ‘‘summon’’ the
rescue service (only to ‘‘inform’’ them),
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and requested that OSHA insert
language requiring that action (ID–210,
Tr. p. 357). OSHA responded to this
comment by adopting the language of
the general industry standard in final
§ 1926.1209(g).
Paragraph (h). Final § 1926.1209(h),
which is identical to the general
industry standard at § 1910.146(i)(8),
requires the attendant to take the actions
specified in § 1926.1209(h)(1) through
(h)(3) to prevent unauthorized persons
from entering a permit space while
entry is taking place. OSHA recognizes
that there are individuals who may
mistakenly believe that they are to work
on a task in the space, or who may
simply wander by or attempt to enter
into the space unaware of the dangers of
the PRCS. Final § 1926.1203(b) requires
the employer to notify the controlling
contractor and other specified
employees, as well as the employees’
authorized representatives, about the
location of, and dangers posed by, the
space. However, if someone other than
an authorized entrant happens to
approach the PRCS, § 1926.1209(h)(1)
specifies that the attendant must make
that individual aware that he/she must
stay away from the PRCS. Some
construction sites may be accessible to
the public, so the attendant also would
be responsible for warning members of
the public who may attempt to enter a
permit space at the site. Should an
unauthorized person enter the PRCS,
paragraph (h)(2) of § 1926.1209 requires
the attendant to advise him/her to exit
the space immediately. This provision
protects employees who enter permit
spaces without proper authorization,
training, or equipment, from the hazards
of the permit space, and prevents injury
to the entrants already in the permit
space from the actions of unauthorized
entrants and the items they may carry
into the space.
Because an attendant may not have
supervisory authority, or because the
errant individual may work for another
employer at a multi-employer
construction site, an attendant may not
have the authority to stop unauthorized
individuals from entering the PRCS, or
to require them to exit once they are
inside the space. Therefore, paragraph
(h)(3) of § 1926.1209 requires the
attendant to notify the entry supervisor,
along with the authorized entrants, of
this situation, and to evacuate if
necessary, as unauthorized entry will
typically create a prohibited condition
under the permit. Accordingly, OSHA
does not encourage or require attendants
to expose themselves to potential harm
by physically preventing entry to any
person.
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Paragraph (i). Final § 1926.1209(i),
which is identical to the general
industry standard at § 1910.146(i)(9),
requires employers that designate
attendants to perform non-entry rescues
to ensure that the attendants perform
these rescues in accordance with the
employer’s rescue procedure. When
properly executed, the attendant’s
performance of non-entry rescue can be
the fastest and most effective means of
successfully rescuing an entrant, while
preventing injuries and deaths that may
result from improperly executed entry
rescue operations. However, if the
employer designates the attendant to
perform non-entry rescue but does train
the attendant to perform non-entry
rescue, or if the attendant does not
operate winching equipment or perform
other components of the rescue in
accordance with the proper procedures,
then the result could render the rescue
ineffective and endanger the attendant
(e.g., improper line retrieval could cause
the attendant to lose balance and fall
into the permit space), delay rescue
(and, thereby, endanger the entrant in
need of rescue), or endanger other
entrants.
Paragraph (j). Final § 1926.1209(j),
which is identical to the general
industry standard at § 1910.146(i)(10),
requires that the attendant not engage in
other activities that could distract him
or her from attending to the permit
space. The attendant could endanger the
authorized entrants if distracted from
these duties. If an attendant performs a
task that diverts his or her attention
from the attendant duties, an emergency
condition inside or outside the space
could go undetected until it is too late
to prevent injury or death to the
attendant. However, OSHA also
recognizes that the attendant can
perform some additional tasks safely,
particularly those tasks that enhance the
attendant’s knowledge of conditions in
the permit space. For example, passing
tools to authorized entrants and remote
monitoring of the atmosphere of the
PRCS are among the types of duties
permitted, provided the attendant does
not enter the PRCS. Activities requiring
close or prolonged concentration, or
those activities requiring that the
attendant be away from a location in
which he can observe the PRCS, would
likely interfere with attendant duties.
Employers must not assign such
activities to an attendant and must
ensure that an attendant not engage in
such activities. The Agency notes that,
although the employer may assign
attendants to more than one permit
space at the same time under
§ 1926.1204(f), the employer must still
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properly train and equip the attendant
so that the attendant’s role with respect
to one space does not interfere with his
or her duties with respect to other
permit spaces. See also
§ 1926.1204(f)(1). In other words, the
attendant’s duty under § 1926.1209(j)
applies separately with respect to each
individual permit space.
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Section 1926.1210—Duties of entry
supervisors
The duties of the entry supervisor are
critical to the safety of entrants working
in a permit space. The employer must
assign an entry supervisor who has the
responsibility to supervise testing the
atmosphere and identifying hazards
both before and during entry,
terminating entry when necessary,
removing unauthorized entrants, and
generally ensuring that the work
performed in the permit space conforms
to the permit program and the
acceptable conditions specified on the
permit. As noted in the preamble to the
general industry standard, the entry
supervisor has ‘‘overall accountability
for confined space entry’’ (58 FR 4523).
OSHA enumerated specific
responsibilities in § 1926.1210 of the
final rule, which is almost identical to
§ 1910.146(j) of the general industry
standard. The final rule also is
consistent with the entry supervisor
requirements in the proposed rule,
which were at proposed
§ 1926.1210(e)(2) and § 1926.1211(d)(1)
and (d)(2).24
The introductory language to
§ 1910.146(j) refers to ‘‘the employer.’’
In this final rule, OSHA instead refers
to ‘‘the entry employer’’ to clarify how
this rule applies on multi-employer
worksites. This revision is nonsubstantive; in both cases, the
requirements apply to each employer
establishing the permit program for a
permit space.
One commenter suggested that OSHA
use ‘‘competent person’’ in place of
‘‘entry supervisor’’ to ‘‘be more
consistent with other construction
standards’’ (ID–124, p. 8). Although
some employers in the construction
industry may not be as familiar with the
term ‘‘entry supervisor,’’ OSHA is
retaining the language of the general
industry standard because the term is
clear and intuitive, and the majority of
24 OSHA specified in the proposed rule that the
entry supervisor is responsible for evacuating
employees from the permit space under specified
conditions, and for terminating entry and canceling
the permit. OSHA included similar requirements in
final § 1926.1205(e) (permitting process), which is
a more appropriate location than § 1926.1210 of the
final rule because the requirements in
§ 1926.1205(e) address the process of terminating
and canceling the permit.
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commenters seemed familiar with that
terminology.
Paragraph (a). Final § 1926.1210(a),
which is identical to the general
industry standard at § 1910.146(j)(1),
except for a non-substantive
clarification, requires the employer to
ensure that each entry supervisor is
familiar with, and understands, the
hazards that entrants may encounter
during entry, including information on
the mode, signs or symptoms, and the
consequences of exposure to these
hazards. Consistent with its approach in
other provisions noted earlier, OSHA
changed the use of the term ‘‘know,’’
found in corresponding § 1910.146(j)(1),
to ‘‘is familiar with and understands’’ in
this final rule to clarify that the entry
supervisor must comprehend the
hazards that entrants may encounter.
In the discussion of the duties of the
entry supervisor in the preamble to the
general industry standard, OSHA
explained that, in light of the
overarching responsibility of the entry
supervisor for the safety of all entrants,
it is ‘‘only reasonable that he or she be
expected to know at least as much, if
not more, than authorized entrants and
attendants’’ (58 FR 4523). That
knowledge is particularly important in
the context of construction, where high
turnover of employees and changes to
the work site may be more frequent than
for general industry. As an individual
with the authority to terminate entry
and cancel the entry permit, it is
essential that the entry supervisor
recognize hazardous conditions and
telltale indications (signs, symptoms,
and characteristic effects) that a hazard
from within or outside the permit space
is affecting employees engaged in the
PRCS operations. By meeting the
knowledge requirements of final
§ 1926.1210(a), the entry supervisor will
be able to effectively identify emergency
situations by observing employees
involved in entry operations.
Paragraph (b). Final § 1926.1210(b),
which is identical to the general
industry standard at § 1910.146(j)(2),
requires the entry supervisor to verify
that the employer performed all tests
specified by the entry permit, and that
all procedures and equipment so
specified are in place before he or she
may sign the permit and allow entry.
The paragraph also specifies that the
entry supervisor must verify this
information by checking the
corresponding entries on the permit.
These preliminary checks are necessary
to ensure that the conditions in the
space are within the acceptable entry
conditions—hazard levels are as
planned, and protective measures are in
place, working properly, and are
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effective—before entry operations
commence.
Paragraph (c). Final § 1926.1210(c)
requires the employer, through the entry
supervisor, to stop the entry and cancel
(or suspend) the permit, as set forth by
final § 1926.1205(e), when certain
conditions change inside the permit
space. By requiring the entry supervisor
to terminate the entry permit under the
specified conditions, the final rule
ensures that the employees will exit the
space if there is a deviation from
acceptable entry conditions and,
therefore, avoid encountering harm
arising from prohibited conditions
within the PRCS. Final § 1926.1210(c) is
nearly identical to the general industry
standard at § 1910.146(j)(3), except that
the new final provision allows for the
suspension of a permit, rather than a
cancellation, as permitted in final
§ 1926.1205(e). For additional
explanation of the suspension of the
permit, see the explanation above of
§ 1926.1205(e).
To perform this duty effectively, an
entry supervisor must be knowledgeable
of the hazardous conditions and the
tests and procedures used to monitor
these conditions so the entry supervisor
can respond in a timely manner to a
developing hazard. While the entry
supervisor need not personally perform
the testing or monitoring (but may
choose to do so if properly trained), the
entry supervisor must possess the
expertise necessary to oversee the
testing and identify the hazards in the
permit space, and is ultimately
responsible for identifying deviations
from acceptable entry conditions and
other unsafe conditions. In the proposed
rule, this requirement differed slightly
from the requirements in the general
industry standard and this final rule,
but the result is the same: The entry
supervisor must have all the
information regarding the conditions
and monitoring results required to know
when it is necessary to terminate entry.
This requirement remains in effect even
if the entry supervisor assumes other
duties, such as the duties of an entrant
or attendant.
Paragraph (d). Final § 1926.1210(d),
which is nearly identical to the general
industry standard at § 1910.146(j)(4),
requires the entry supervisor to verify
that rescue services are available, and
that the means for obtaining such
services are operable. Because the
employer must assign authority for safe
permit entry operations to the entry
supervisor, it is reasonable and
consistent with the rescue provisions to
specify that the entry supervisor verify
that the rescue service is available, and
that the means of summoning it in a
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timely manner is functioning properly.
The only difference between this final
provision and the general industry
standard is that OSHA clarified in this
final provision that, as part of the
contact with the rescue service, the
entry supervisor must verify that the
rescue service will notify the supervisor
if that service becomes unavailable
during the entry process. This
clarification corresponds to the
employer’s duty to confirm the
continued availability of the rescue
service in final § 1926.1211(a)(3), and is
consistent with the proposed rule,
which focused overall coordination of
the permit entry operations on the entry
supervisor (see 72 FR 67368 (Nov. 28,
2007)). Under both the proposed and
final rules, the overall coordination
duties include managing
communications with the rescue
service.
Paragraph (e). Final § 1926.1210(e),
which is identical to the general
industry standard at § 1910.146(j)(5) and
consistent with the proposed rule at
§ 1926.1211(d)(2), requires the entry
supervisor to remove unauthorized
individuals who enter, or attempt to
enter, the permit space during entry
operations. Unauthorized entrants lack
the safety training necessary to work in
the PRCS, and the entry permit does not
account for them. Their presence in a
permit space not only poses a danger to
them, but may also endanger the
authorized entrants in the space.
In the final rule, OSHA requires
attendants to warn persons near a
permit space not to enter the permit
space unless they have authorization to
do so, but the attendant is not required
to physically prevent unauthorized
entry or to remove an unauthorized
entrant (final § 1926.1209(h)). Under the
final rule, as with the general industry
standard, the entry supervisor has
ultimate responsibility for preventing
unauthorized entry and, if that fails, for
removing the unauthorized person as
quickly as possible from the permit
space.
Paragraph (f). Final § 1926.1210(f) is
identical to the general industry
standard at § 1910.146(j)(6) and
consistent with the proposed rule at
§ 1926.1211(e)(2). While paragraphs (a)
and (b) of this section of the final rule
set out the entry supervisor’s
responsibility to ensure that the permit
space will be safe prior to entry, and
paragraph (c) of this section makes it
clear when the employer must cancel or
suspend the permit, paragraph (f)
requires the entry supervisor to ensure
the maintenance of safe working
conditions during the entry. In final
§ 1926.1210(f), OSHA sets out the entry
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supervisor’s duty to assess the space
when first assigned entry supervisor
duties for the permit space, and at
regular intervals thereafter.
OSHA recognizes that employers will
need to replace entry supervisors
occasionally for various reasons (for
example, shift changes, lunch breaks,
and regular rotations to other tasks at
the job site). This final provision
requires that, whenever there is a
transfer of supervisory responsibility for
a permit-space entry operation, the
entry supervisor must assess the space
and its hazards to maintain entry
operations that are consistent with the
entry permit and other requirements of
the standard pertaining to the
maintenance of acceptable entry
conditions. This requirement ensures
that the new entry supervisor reviews
the permit and entry conditions and,
consequently, has the information
necessary for performing the duties
enumerated in final § 1926.1210.
Final § 1926.1210(f) also requires that
the entry supervisor assess the space
and its hazards at intervals dictated by
the hazards and operations performed
therein. This requirement addresses the
fact that conditions often change over
time within a permit space, while
providing the employer some flexibility
to monitor different hazards at different
intervals of time (see 58 FR 4524). Some
hazards may develop rapidly and
require more frequent assessments, such
as when employees are in a space with
a combustible gas already at 9 percent
of its LEL, and the employer expects the
operations to generate additional gas
that will be controlled through
ventilation. Other hazards, such as a
slow leak of water from a pipe into a
permit space, are likely to develop at a
more predictable pace that would allow
for less frequent monitoring. The type of
operation and location or characteristics
of the space may also require more
frequent assessments by the entry
supervisor, such as demolishing an
underground wall near water pipes or
performing construction work in a
sewer system where even a small leak
of an unidentified substance or other
small change in the sewer space could
potentially place the lives of the
employees in danger.
One commenter asserted that it is not
feasible for an employer to have only
one entry supervisor because employees
could perform no work in the permit
space if the entry supervisor is absent
(ID–107, p. 4). This commenter
misunderstands the entry supervisor
requirements. Final § 1926.1210(f)
permits an employer to transfer the
duties of the entry supervisor between
employees, so long as each such entry
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25445
supervisor has the proper qualifications
to perform these duties and receives the
appropriate information about the space
from the previous supervisor.
Another commenter also was unsure
whether the final rule requires the entry
supervisor to be on the construction site
at all times (ID–124, p. 7). The entry
supervisor is responsible for crucial
duties, including monitoring the space,
physically removing unauthorized
entrants, and terminating entry if
necessary. Therefore, it is highly
unlikely that the entry supervisor will
be able to fulfill the required duties
from a distance. However, the standard
does not foreclose the potential for
technology advances that may allow an
entry supervisor to perform the required
functions while located away from the
permit space. If the entry supervisor is
unable to perform his or her duties,
either because he or she is not present
on the site or for another reason, then
the employer must terminate the entry
or replace that entry supervisor with a
supervisor properly qualified under this
final section, and who makes the
determinations required by final
§ 1926.1210(f), or the employer will not
be in compliance with this final rule.
Section 1211 — Rescue and Emergency
Services
An employer conducting a permitspace entry must include procedures for
providing rescue and emergency service
as part of its permit-space program (final
§ 1926.1204(i)). Final § 1926.1211
specifies requirements for that rescue
and emergency service. The
requirements in final § 1926.1211 are
substantively similar to the
corresponding provisions in the general
industry confined spaces standard at
§ 1910.146(k). In general, the substance
of the rescue provisions in the proposed
rule was similar to that of the rescue
provisions in the general industry rule,
but the language of the general industry
rule is more performance-oriented and
includes fewer detailed requirements
than the proposed rule.
Final § 1926.1211 uses the term
‘‘rescue and emergency services.’’ There
are two types of rescue services
addressed by this provision: Non-entry
rescue and entry rescue, and the
employer must determine which is
appropriate. Emergency services are
distinct: They are the services that must
be used to retrieve the entrant when the
employer’s non-entry or entry rescue
fails.
OSHA notes that during the
rulemaking for the general industry
confined spaces standard, a commenter
raised a question as to whether an entry
rescue service involved only off-site
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rescue teams (58 FR 4525). The Agency
made clear in that rulemaking that an
employer could use an on-site team as
long as the employer met all the criteria
outlined in the standard. That rationale
is equally applicable to this final rule.
Consequently, the term ‘‘rescue service’’
in this standard does not exclude the
use of an on-site entry rescue service.
Indeed, as OSHA noted in the preamble
to final § 1910.146, the need to respond
as quickly as possible to an emergency
within a permit space indicates a
preference for on-site rescue teams
wherever it is practical.
Some employers may prefer to
establish an on-site rescue service.
Other employers may prefer to rely on
off-site rescue services, perhaps because
they believe that they do not have the
resources to train employees to perform
rescue or because the ready availability
of an adequate off-site rescue service
makes an on-site capability
unnecessary. The final rule allows
employers to make arrangements for
either on-site or off-site services.
Also, the final rule’s phrase ‘‘rescue
service’’ refers to all rescue personnel
provided to remove entrants from
permit spaces. It includes situations in
which one person will be responsible
for the rescue of authorized entrants
(e.g., when the employer uses non-entry
rescue systems). In such situations, the
evaluation and selection requirements
of final § 1926.1211(a) will apply. The
training and practice requirements of
final § 1926.1211(b) also apply in these
situations. Thus, OSHA is treating all
rescue services alike, whether the
service is on-site or off-site, whether the
service is entry rescue or non-entry
rescue, or whether the service consists
of a multiple-person team or a single
person.
One commenter asserted that the
rescue requirements should differ based
on the type of hazard that is present in
or near the confined space (ID–077, p.
1). This standard does set different
requirements based on the type of
hazard in a PRCS, although the
requirements in § 1926.1211(a)(1) and
(a)(3)(i) establish performance-oriented
criteria that vary based on the hazards
in the permit spaces. Final
§ 1926.1203(e) allows an employer to
use alternative entry procedures
different than those required by the rest
of this standard under certain
circumstances. Final § 1926.1203(g)
allows an employer to reclassify a PRCS
as a non-permit confined space when
the employer meets the requirements of
that paragraph. The rescue requirements
in this final standard do not apply when
an employer is using the procedures in
final §§ 1926.1203(e) or 1926.1203(g).
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When an employer is working within a
PRCS that does not meet the criteria in
one of those paragraphs, however, the
rescue requirements are the same for all
hazards severe enough to trigger the
PRCS program required by final
§ 1926.1204.
Paragraph (a). The introductory text in
final § 1926.1211(a), which is identical
to the general industry standard at
§ 1910.146(k)(1), introduces the
requirements for designating rescue
services. This paragraph emphasizes the
evaluation that an employer must
perform of available rescue and
emergency service resources before
designating a rescue provider for the
purposes of this standard as required at
§ 1926.1204(i) of this final rule. The
requirements of this paragraph apply
equally to both on-site (employees of the
entry employer or controlling
contractor) and third-party rescue
services.
One commenter asserted that some
third-party rescue services, such as fire
departments, are unwilling to be the
designated rescue service due to
liability concerns (ID–075, p. 8).
Another commenter asserted that
relying on local fire departments to
provide third-party recue services can
be problematic because the rescue
service is not designed specifically to
provide confined space rescue at a
particular worksite (ID–210, Tr. p. 192).
These comments imply that OSHA
requires employers to designate the
local fire department as the rescue
service, which is not the case. In the
final rule, OSHA provides employers
with much flexibility in choosing its
third-party rescue service if the
employer elects to rely on a third-party
rescue service.
Contrary to the assertion of one
commenter (ID–107 p. 4), both the
proposed rule and the general industry
standard require employers to provide a
rescue service for entries, even if a
third-party rescue service is not
available. (See proposed § 1926.1211(h)
and 72 FR 67377–78; 29 CFR
1910.146(d)(9); 58 FR 4524–27; and 63
FR 66018, 66023 (Dec. 1, 1998).) If one
third-party rescue service will not
assume the responsibility of providing
rescue under this final rule, or is not
adequately prepared to meet these
rescue requirements, then the employer
must either find a different third-party
rescue service that is capable of
performing this service, or train and
equip its own employees to provide
adequate rescue service.
Paragraph (a)(1). Final
§ 1926.1211(a)(1), which is identical to
the general industry standard at
§ 1910.146(k)(1)(i), requires an employer
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to assess a prospective rescue service’s
ability to respond to a rescue summons
in a timely manner. Final
§ 1926.1211(a)(1) provides that the
hazards identified in the permit space
determine timeliness. This provision
defines ‘‘timeliness’’ in terms of how
quickly an entry rescue service needs to
reach an entrant to prevent further
serious physical damage that may result
from hazards in the PRCS while the
entrant is awaiting rescue. For example,
as stated in the note to paragraph (a)(1),
OSHA’s respiratory protection standard
at 29 CFR 1910.134, made applicable to
construction by 29 CFR 1926.103,
requires standby rescue personnel
equipped with respiratory protection
when employees are working in
atmospheres that require respiratory
protection because the atmospheres are
immediately dangerous to life or health
(IDLH). Consistent with that
requirement, the timeliness requirement
in this final rule also means that
employers must ensure that an
appropriate rescue service is on site for
IDLH permit entries. An atmosphere in
a permit space where an exposed
entrant could suffer irreversible
impairment within four to six minutes
would meet the definition of an IDLH
atmosphere. However, because not all
permit spaces pose the same immediate
dangers as those spaces with IDLH
atmospheres, employers may use a less
resource-intensive and more measured
response capability for situations in
which the need for a nearly instant
response is not present. For example, in
appendix F to § 1910.146, OSHA
explained that if the danger to entrants
is restricted to mechanical hazards that
would cause injuries (e.g., broken bones,
abrasions) a response time of 10 or 15
minutes might be adequate.
At least one commenter was unsure
what constitutes a response in a ‘‘timely
manner’’ (ID–121, p. 5). Another
commenter suggested that OSHA
identify the factors in § 1910.146(k)(1)(i)
of the general industry confined spaces
standard that it would use to analyze
whether a rescue response is ‘‘timely,’’
and apply them in the construction
standard (ID–129, p. 3). The factors that
apply in general industry are relevant in
evaluating timeliness in this final rule.
When the Agency added the parallel
rescue selection requirements to
paragraph (k) of § 1910.146, it included
a substantive discussion of ‘‘timely’’
rescue in the preamble, and concluded
that the determination of timeliness
‘‘will be based on the particular
circumstances and hazards of each
confined space, circumstances and
hazards which the employer must take
into account in developing a rescue
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plan’’ (63 FR 66023). As the note to new
§ 1926.1211(a)(1) makes clear, the same
approach applies in this final rule.
Employers must consider the known
hazards of in the space, the time it takes
to reach the permit space, as well as the
time it will take to enter the space and
retrieve employees from inside the
space, when determining what is a
‘‘timely’’ response. Several commenters
acknowledged that so many factors
could affect whether a response is
‘‘timely’’ that it is not practical for
OSHA to adopt a bright-line timeframe
that would work in all scenarios (ID–
090, p. 1; ID–108, p. 3; ID–116, p. 4). As
noted in the discussion above, OSHA
identified some of the factors that
determine whether an employer’s
response to an emergency is ‘‘timely,’’
but these factors are not exclusive. The
standard as a whole will prevent
employee exposure to hazards, but
employers must develop rescue plans
that anticipate and minimize potential
harm to employees in the event an
employee becomes trapped or exposed
to an atmospheric hazard. For example,
if a permit space contains a potential
IDLH atmosphere that the employer will
control through ventilation, the
employer has a duty to ensure that the
ventilation is effective, but also has a
separate duty to plan for rescue in the
event that the ventilation fails and an
employee becomes trapped in the
increasingly hazardous atmosphere.
The deaths of two workers during a
sewer entry illustrate the potential
consequences of inadequate rescue
planning: Not only did the two
employees enter the space without a
permit, rescue plan, or retrieval lines,
but the employer also did not assess a
potential rescue service. See S. J. Louis
Construction, OSHRC Docket No. 12–
1045 (2013) (Welsh, ALJ). The first
worker was overcome quickly by a
hazardous atmosphere in the sewer
manhole, and the second worker was
also overcome after he entered the sewer
manhole to attempt rescue. The firemen
who responded first were not trained or
equipped for permit-space entry and
had to summon a different rescue
service. The first worker was washed
down the sewer line before the second
rescue service arrived and was trapped
underwater so that it took nearly a day
to retrieve his body.
One commenter asserted that, when
using a third-party rescue service, it is
infeasible for the third-party rescue
service to maintain constant contact
with construction sites, and not
reasonable for outside services to track
frequent changes in a confined space’s
configuration (ID–116, p. 4). Another
commenter asserted that it is too costly
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to require rescue services on site, and
that OSHA should allow an employer to
merely establish a rescue plan to
address accidents (ID–108, p. 5). Neither
final § 1926.1211(a)(1), nor any other
paragraph in final § 1926.1211, requires
an employer’s rescue service to be on
the construction site at all times, absent
an IDLH atmosphere or other hazard
that would require immediate rescue, or
to be in constant contact with the
construction site.
In general, final § 1926.1211(a) only
requires an employer to determine that
the rescue service is capable of
responding to an emergency in a timely
manner. However, compliance may
require the employer to communicate
with an off-site rescue service
immediately prior to each permit-space
entry unless the employer has been
assured that personnel are always
available and able to respond in a timely
manner. Section 1910.146 addresses the
scenario in which the designated rescue
service is a local fire department that
cannot guarantee that the rescue team
will available during the employer’s
entire permit-space entry operations; in
such a case, the employer must ensure
close communication with the rescue
service during entry operations so that,
if the rescue service becomes
unavailable while an entry is underway,
the employer can abort the entry
immediately. May 23, 2008, letter to
Jonathan Pennington. To facilitate this
communication, OSHA requires in final
paragraph (a)(3)(iii) that the entry
employer select a rescue provider that
agrees to notify the entry employer in
the event the rescue service is
unavailable. Entry operations must not
resume until the entry supervisor
verifies that rescue services are available
(final § 1926.1210(d)).
One commenter asserted that OSHA
should focus on the capability of the
rescue service to provide life support,
and not whether the rescue response is
‘‘timely’’ (ID–017, p. 2). For example,
the provision should focus on requiring
someone trained in space-specific
rescue techniques, first aid and
cardiopulmonary resuscitation, who can
gain safe access to the patient, stop the
bleeding, administer CPR, and perhaps
effect rescue. Final § 1926.1211(a)(2)
specifies the requirement to assess
whether a rescue service is capable of
providing adequate and effective rescue
service. Final § 1926.1211(a)(1) requires
the employer to assess whether the
rescue service is capable of applying
such skills in a timely manner.
Paragraph (a)(2). Final
§ 1926.1211(a)(2), which is identical to
the general industry standard at
§ 1910.146(k)(1)(ii), requires an
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25447
employer to assess a prospective rescue
service’s ability to provide adequate and
effective rescue services. This
requirement is necessary to ensure that
the rescue service can perform rescue
safely and effectively.
Many third-party emergency
responders may be able to provide
proper permit-space rescue functions for
spaces that do not require immediate,
stand-by rescue capability, but not all
responders have this ability. Each
employer relying on these services must
verify that the emergency responder has
the training, equipment, ability, and
willingness to perform rescue for
confined spaces in its facility.
In evaluating a prospective rescue
provider’s abilities, the employer also
must consider the willingness of the
service to become familiar with the
particular hazards and circumstances
faced during its permit-space entries.
Paragraphs (a)(4) and (a)(5) of final
§ 1926.1211 require the employer to
provide its designated rescuers with
information about its confined spaces
and access to those spaces to allow the
rescuers to develop appropriate rescue
plans and to perform rescue drills. A
rescue service’s receptiveness to this
information is directly relevant to its
ability to function appropriately during
actual rescue operations.
Two commenters suggested that
OSHA provide additional guidance
about how employers that use a thirdparty rescue service are to verify that
they meet the requirements in final
§ 1926.1211(a) (ID–099, p. 3; ID–132, p.
3). OSHA has provided performancebased requirements that are closely
aligned with the general industry
standard. Therefore, OSHA does not
believe that it will be difficult for an
employer to determine whether the
rescue service meets these requirements.
However, OSHA is willing to provide
additional guidance as necessary.
Paragraph (a)(3). Final
§ 1926.1211(a)(3), which is identical to
§ 1910.146(k)(1)(iii) except for the
addition of § 1211(a)(3)(iii), introduces
the requirements that a designated
rescue service must meet. Final
§ 1926.1211(a)(3) requires the employer,
after performing the evaluations
required by paragraphs (a)(1) and (a)(2)
of this section, to select a rescue
provider that meets the requirements of
this paragraph. Therefore, it is not
sufficient for an employer simply to
perform the evaluations required. The
employer also must use the results of
those evaluations to select a rescue
service that will meet the requirements
of this standard.
Final § 1926.1211(a)(3)(i), which is
identical to the general industry
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standard at § 1910.146(k)(1)(iii)(A),
requires an employer to designate a
rescue team that is capable of reaching
a victim in an appropriate amount of
time. This requirement is an important
element of a preplanned rescue because
it eliminates further risk of injury and
death resulting from an unnecessary
lapse of time between an emergency and
when the rescue service affects the
rescue. Delays may occur for reasons
such as: The travel distance from an offsite location is too far away from the
permit space; time needed to gather
rescue equipment from storage; lack of
training needed to use the rescue
equipment properly; or the rescue
service is off-duty at the time of the
emergency. As discussed above, the
time required to respond to a rescue
summons varies with the hazards posed
by the permit space, and the entry
employer must consider the hazards
involved in its permit-space work and
select an appropriate rescue service.
Final § 1926.1211(a)(3)(ii), which is
identical to the general industry
standard at § 1910.146(k)(1)(iii)(B),
requires an employer to designate a
rescue team that is capable of providing
proficient rescue service. This
requirement is an important element of
a preplanned rescue because it
eliminates further risk of injury and
death resulting from improperly
equipped or untrained rescuers. At a
minimum, the designated service must
comply with final § 1926.1211(b).
Final § 1926.1211(a)(3)(iii) requires an
employer to designate a rescue service
that agrees to notify the entry employer
immediately if it becomes unavailable
during an entry operation. There is no
corresponding provision explicitly
required in § 1910.146, although
§ 1910.146(k)(1)(iii)(A) implies such a
duty. For a rescue service to be effective,
it must be available when the entry
employer is conducting permit-space
entry operations. This provision will
promote employee safety by ensuring
that entry employers know when their
designated rescue services are
unavailable.
Final § 1926.1211(a)(3)(iii) enhances
an employer’s knowledge about the
availability of a rescue service during
entry operations. This final provision, in
combination with other provisions of
this final standard, ensures that entry
employers know that the rescue service
is available. Final § 1926.1210(d), and
§ 1910.146(j)(4), both require the entry
supervisor to verify that the rescue
service is available.
Final § 1926.1211(a), and
§ 1910.146(k)(1), address the employer
with a designated third-party rescue
service that cannot guarantee that its
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rescue team will be available during the
employer’s permit-space entry
operations. In such a case, the employer
must maintain close communication
with the rescue service during entry
operations so that, if the rescue service
becomes unavailable while an entry is
underway, the employer can instruct the
attendant to abort the entry
immediately. May 23, 2008, letter to
Jonathan Pennington. Consistent with
these two provisions, the rescue service
needs only to communicate its
unavailability when the entry employer
informs it that entry operations are
underway. Although the employer is
less likely to know exactly when a thirdparty service is responding to another
call that would make the service
unavailable to perform rescue from the
PRCS, this requirement also applies to
on-site rescue services if, for example,
the on-site service members become
involved in other work activities that
prevent them from responding in a
timely fashion to a rescue summons.
Paragraph (a)(4). Final
§ 1926.1211(a)(4), which is identical to
the general industry standard at
§ 1910.146(k)(1)(iv), requires an
employer to inform the designated
rescue service of the known hazards
associated with the permit space in the
event rescue becomes necessary. This
provision provides the rescue service
with information about hazards and
conditions in the permit space that will
protect the rescue-service employees
who enter the permit space for rescue
operations, training, or any other
purpose.25 Compliance with this
paragraph, as well as with paragraphs
(a)(1) and (a)(2) of this section, would
require the employer to provide this
information to the rescue service prior
to permit-space entry. Similarly, if an
entry involves hazards not usually
encountered by the rescue service, or
hazards or a configuration that would
require the rescue service to use
equipment that it does not always have
available, the employer would have to
notify the rescue service of these
hazards and conditions prior to
beginning the entry operation. In most
cases, this information exchange can be
accomplished during a single
conversation, but additional
conversations would be necessary in the
event of changes in the conditions or
configuration of the space after the
initial conversation.
25 To meet the requirements of this provision, the
employer would have to inform the rescue service
that the employer selected the service to rescue its
employees during entry operations, and that the
employer is relying on the rescue services to
perform these rescues when necessary.
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Paragraph (a)(5). Final
§ 1926.1211(a)(5), which is identical to
the general industry standard at
§ 1910.146(k)(1)(v), requires an
employer to provide the designated
rescue service with access to all permit
spaces from which the rescue service
may need to perform a rescue. The
purpose of the provision is to provide
the rescue service with an opportunity
to develop appropriate rescue plans and
to practice rescue operations. OSHA
believes that this provision will allow
the rescue service to become familiar
with the configuration and features of
the permit space to which the employer
may summon it to perform rescue
operations, and thereby develop
appropriate rescue plans and practice
rescue operations.
Access to the permit space or a
simulated permit space for the purpose
of planning and practicing rescue
operations increases the probability that
rescue operations will proceed more
efficiently and effectively, thereby
reducing the probability of serious
injury or death to authorized entrants
and rescuers during an actual entryrescue operation. Note that this
provision does not require the thirdparty rescue service to use the permit
spaces for practice; final paragraph
(a)(5) simply requires that the entry
employer provide access to the space. In
performing practice rescues, the thirdparty service may use any representative
permit spaces that replicate the permit
spaces from which it may perform a
rescue in accordance with final
§ 1926.1211(b)(4).
Paragraph (b). Final § 1926.1211(b)
sets forth four requirements for an
employer that has employees designated
to provide rescue service. Paragraph (b)
is identical to the general industry
standard at § 1910.146(k)(2), except that
OSHA replaced references to employers’
responsibilities for ‘‘employees’’
collectively with references to
employers’ responsibilities to ‘‘each
employee’’; this revision emphasizes
that an employer’s responsibility in this
area is to each employee individually.
Final § 1926.1211(b) applies to the
employer of the rescue service
(including non-entry rescue personnel)
when that employer also is the entry
employer or other employer performing
work integral to construction. When the
employer is a third-party rescue service
that does not perform work integral to
construction, then the work performed
by the rescue service is covered under
the corresponding general industry
standard at § 1910.146(k)(2). OSHA
believes that it is important to protect
employees who enter permit spaces to
perform rescue duties regardless of the
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employer responsible for the rescue
team. By making this final paragraph
substantively identical to
§ 1910.146(k)(2), there are no differences
in the requirements for rescue-team
employers under the general industry or
construction confined space standards.
The Agency determined that this
requirement is necessary to provide
protection for employees in on-site
rescue teams, while employees of thirdparty rescue services will be protected
under identical general industry
requirements. This is consistent with
the intent of the Agency to protect both
on-site rescue teams and third-party
rescue services in the general industry
confined spaces standard (58 FR 4527).
One commenter, representing a
company involved in sewer work,
asserted that it is neither practical nor
feasible for employers performing
construction to employ their own rescue
personnel (ID–107, p. 4). However,
neither proposed § 1926.1213(c) nor
final § 1926.1211(b) specify that entry
employers must hire additional, rescuespecific, personnel. Rather, employers
that train and equip current employees
as required by this standard may
designate their own employees to
provide permit-space rescue, just as
under the general industry standard.
Also, the commenter referred to a
‘‘typical sewer construction/
maintenance project,’’ implying that the
company it represents engages in
maintenance projects that would be
subject to the same requirement in the
general industry standard. However, the
commenter did not indicate that this
company, or any other company, found
it infeasible to comply with the general
industry standard. The commenter did
not provide any explanation for why
compliance with the requirement in this
final standard would be more
burdensome than compliance with the
general industry work.
Other commenters incorrectly
asserted that OSHA would require
construction employers to become
experts in rescue service (ID–126, pp. 2–
3; ID–075, pp. 8–9). Final § 1926.1211(b)
does not prohibit employers from using
a third-party rescue service; it merely
permits employers to use their own
employees to provide rescue service.
The general industry confined spaces
standard at § 1910.146(k) also provides
the option of using an employer’s own
employees to provide rescue services.
At least one commenter supported the
provision permitting construction
employers to use their own employees
to provide rescue service, noting that
the use of a third-party rescue service is
not always effective because of the
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location of the site or the competency of
the third-party rescuers (ID–143, p. 2).
Paragraph (b)(1). Final
§ 1926.1211(b)(1), which is nearly
identical to the general industry
standard at § 1910.146(k)(2)(i), requires
an employer with employees designated
to provide rescue service to equip each
affected employee with PPE and to train
the employees, at no cost to those
employees, how to use the PPE safely.
The provisions in this paragraph will
help the employer prevent injuries and
deaths that could occur without the
appropriate PPE, or because the
employees did not receive proper
training in use of such equipment.
Employers still must select and use PPE
in accordance with subpart E of part
1926 and all other applicable
requirements. These requirements,
which include proper selection and use
of respirators in accordance with the
requirements of the respiratory
protection standard at § 1926.103,
continue to apply when workers are
working in a permit space.
Paragraph (b)(2). Final
§ 1926.1211(b)(2), which is nearly
identical to the general industry
standard at § 1910.146(k)(2)(ii), requires
an employer with employees designated
to provide rescue service to train each
employee performing the rescue service,
and to ensure that these employees
successfully complete the training
required for authorized entrants.
This provision would ensure that
rescue-service employees can perform
their assigned duties proficiently and
safely under hazardous permit-space
conditions. Lack of such training would
endanger the rescue-service employees,
those in need of rescue, and others
affected by the permit-space rescue
operations. Training in the proper use of
rescue equipment will help the
employer eliminate injuries and deaths
caused by the improper use of such
equipment. Rescue-equipment training
must include training on all equipment
that may be used in conducting a rescue
in the PRCS, such as the care and
inspection of breathing and ventilation
gear and emergency-evacuation
equipment, and the use of two-way
radios and fire-fighting equipment.
Training in the requirements for
authorized entrants also will protect the
rescue-service employee, those in need
of rescue, and others affected by the
rescue operations because rescueservice employees will be familiar with
the hazards of permit spaces and the
modes of communicating with
attendants. The rescue service may need
to use the same modes of
communication to communicate with a
trapped entrant.
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25449
One commenter suggested that OSHA
require an employer to train all of its
employees, not just entry rescue-service
employees, on how to perform rescue
duties (ID–150, p. 3). OSHA disagrees
with this commenter because, under
final § 1926.1211, training for
employees not authorized to perform
rescue is not necessary for an employer
to be ready to provide effective and
timely rescue service.
Paragraph (b)(3). Final
§ 1926.1211(b)(3), which is nearly
identical to the general industry
standard at § 1910.146(k)(2)(iii), requires
an employer with employees designated
to provide rescue service to train the
employees performing both non-entry
and entry rescue services in basic first
aid and cardiopulmonary resuscitation
(CPR). The Agency believes this
requirement is necessary because of the
hazards and resultant injuries that may
occur in permit spaces. This
requirement also will improve the
probability that the injured employees
survive until higher levels of medical
treatment become available.
Paragraph (b)(4). Final
§ 1926.1211(b)(4), which, apart from an
addition discussed below, is identical to
the general industry standard at
§ 1910.146(k)(2)(iv), requires an
employer to ensure that the designated
rescue service practices rescue
operations at least once every 12
months. OSHA believes this training
requirement for entry-rescue service
employees is necessary to maintain
proficiency in entry-rescue procedures
and the use of rescue equipment. This
training also will ensure that the
employer trains the entry rescue-service
employees on all revisions to entryrescue procedures, and that the
employees are cognizant of any other
new information regarding entry rescue.
Practicing rescues in a permit space or
a representative permit space also
highlights deficiencies in rescue
procedures, and allows for revisions of
those procedures before they can
adversely affect the safety of rescueservice employees or employees in need
of rescue during an actual rescue
operation.
One commenter read the proposed
rule as prohibiting rescue services from
conducting practice rescues in the
actual permit space (ID–107, p. 4). There
was no such prohibition in the proposed
rule, and by adopting the language of
the general industry standard in this
final rule, OSHA makes it clear that
rescuers may practice by removing
dummies or real persons ‘‘from the
actual permit spaces or from
representative permit spaces.’’ If the
employer does not use actual permit
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spaces for practice, representative
permit spaces must simulate the types
of permit spaces from which the
rescuers may perform rescues with
respect to opening size, configuration,
and accessibility.
Proposed § 1926.1213(d) provided
that this practice is not necessary when
the affected employees properly
performed rescue in the same, or
similar, permit space during the last 12
months. This proposed language made
explicit the existing rule under the
general industry standard, which, in its
original preamble, stated that
satisfactory performance of one or more
actual rescues in the same, or similar,
space during the 12-month period prior
to the training anniversary date could
substitute for a practice rescue (58 FR
4528). OSHA previously recognized in
other standards (such as in § 1910.120—
Hazardous waste operations and
emergency response) that actual
experience at a particular task can be at
least as valuable as a practice session or
other type of training. However, just as
the rescue service must practice in the
same spaces or spaces similar to the
ones in which it is to provide rescue, for
an actual rescue to take the place of a
practice rescue, it must be in the same
or similar space. Also note that
unsatisfactory performance of a rescue
indicates the need for further training
and, therefore, cannot substitute for a
practice rescue. This exception applies
when the rescuers perform a rescue
operation in a satisfactory manner and
the entrants, through factors beyond the
rescuers’ control, do not survive.
Therefore, this final rule incorporates
the exception from the proposed rule by
adopting the performance-based
language of the general industry
standard.
One commenter asserted that the
requirement to perform a simulated
rescue is infeasible in situations where
the rescue service is a small local fire
department (ID–090, p. 2). Nevertheless,
the commenter volunteered that
performing the simulated rescue is the
safest approach. When a third-party
rescue service does not have the
resources to perform this simulated
rescue, the employer must either train
its own employees to provide rescue or
designate a third-party rescue service
that is capable of complying with all of
the rescue requirements in final
§ 1926.1211(b).
Another commenter asserted that
OSHA wrote proposed § 1213(c)(6) in a
manner that allowed an entry
employer’s employees to enter a
confined space even when the initial
practice rescue occurred 15 years before
the entry takes place (ID–013, p. 5). This
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commenter misread the requirement.
Final § 1926.1211(b)(4), as in the
proposed rule, requires an employer to
conduct a practice rescue at least once
every 12 months after the initial practice
rescue. Therefore, 12 months minus one
day is the longest period allowed
between a practice rescue and the
moment the employer begins entry
operations.
Another commenter asked how
employers who designate a third-party
rescue service can verify that the service
practices rescue every 12 months (ID–
099, p. 3). The duties in paragraph (b)
apply to the ‘‘employer whose
employees have been designated to
provide permit space rescue.’’
Therefore, if an entry employer hires a
third party to provide rescue services,
the final standard does not require the
entry employer to verify the practice of
the third party. However, paragraph (a),
which applies to all employers that
designate rescue and emergency
services, requires those employers to
evaluate the rescue proficiency of the
rescue team, even a third-party rescue
team, and select a team that is
proficient. This commenter also asserted
that it is too burdensome to fulfill the
requirement to practice rescue
operations, but did not provide a
specific reason why compliance is
infeasible (id.). Both the general
industry confined spaces standard at
§ 1910.146(k)(2)(iv) and NFPA 1670,
sec. 7.1.3.4 (2009 ed.) also specify a
requirement to practice rescue
operations found in final
§ 1926.1211(b)(4). Without a specific
reason to depart from this established
procedure, OSHA finalized this
provision to be similar to proposed rule
§ 1926.1213(c)(6) and the corresponding
provision for general industry confined
spaces at § 1910.146(k)(2)(iv).
Paragraph (c). Final § 1926.1211(c),
which is substantively similar to the
general industry standard at
§ 1910.146(k)(3), requires that an
employer use non-entry rescue, instead
of entry rescue, unless non-entry rescue
is more dangerous or ineffective than
entry rescue. The major difference
between this final provision and
§ 1910.146(k)(3) is that OSHA revised
this final requirement to clarify the
employer’s obligation.
If the employer determines that it will
use non-entry rescue, final
§ 1926.1211(c) also requires the
employer to use a retrieval system or
method. Accordingly, in general
authorized entrants must wear retrieval
devices and employers must use a
retrieval system, in addition to
confirming that emergency assistance is
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available in the event the non-entry
retrieval fails.
Retrieval lines can be highly effective
in assisting in the rescue of an
unconscious or otherwise incapacitated
employee from a confined space. The
other major advantage of using retrieval
lines for rescue is that it is not necessary
to expose a rescuer to the hazards of
entering the permit space to help
remove an injured entrant. The
effectiveness of retrieval lines in rescue
was recognized by employers using this
equipment for confined space entries
during the general industry standard
rulemaking (see 58 FR 4530), and
mandatory use of retrieval lines is
included in both ANSI Z117.1 and the
general industry standard. However, the
Agency recognizes that many spaces do
not readily or safely accommodate the
use of retrieval lines. For example,
obstructions can snag the retrieval line,
and the air lines and electric cords
within the space can pose entanglement
hazards. In addition, depending on the
number of entrants and how much they
move around in the space, the retrieval
lines themselves could pose an
entanglement hazard (see final
§ 1926.1211(c)(3)).
To allow for the greatest degree of
safety in addressing these problems, the
final standard requires the use of
retrieval systems or methods whenever
an authorized entrant enters a permit
space, except in situations for which the
employer can demonstrate that the
retrieval equipment would increase the
overall risk of entry or would not
contribute to the rescue. This is the
approach taken in ANSI Z117.1 and the
general industry standard, and OSHA
believes that adopting this approach
will provide the most effective
protection for employees, with
appropriate allowance for situations in
which employers should not use
retrieval systems.
When enforcing this provision, OSHA
may inspect the permit space to
determine whether a retrieval system
would contribute to a rescue without
increasing the overall risk of entry.
Although some spaces may have
configurations or hazards that warrant a
slightly different approach, in general,
the Agency intends to use the following
factors in determining that a permit
space does not require an employer to
use a retrieval system: (1) The permit
space has obstructions or turns that
prevent transmitting pulls on the
retrieval line to the entrant; (2) the
permit space has projections that would
cause injury to an employee making
forceful contact with the projections
during rescue; and (3) when an entry
employee enters the permit space using
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an air-supplied respirator and the nonentry rescuers cannot control the
retrieval line so as to prevent
entanglement of the retrieval line with
the respirator’s air line.
Section 1926.1211(h) of the proposed
rule specified that employers must
provide both entry and non-entry
rescue, while proposed paragraph
(h)(2)(i) specified that employers must
summon an entry-rescue service
whenever they initiate a non-entry
rescue. One commenter was unsure
whether employers must prepare to
provide both entry and non-entry rescue
(ID–098, p. 2). Another commenter
asserted that it was too burdensome to
require employers to prepare for both
entry and non-entry rescue when
working within or near a PRCS. (ID–120,
p. 3). To address these concerns, OSHA
based the final rule on the general
industry confined space standard, but
drafted the final rule to be more
performance-oriented than the general
industry standard.
The final rule provides for a ‘‘backup’’ to non-entry rescue, much as the
proposed rule did, but in a manner that
is less burdensome for employers.
Consequently, final § 1926.1211(c)
requires that, if an entry employer
determines that it will use non-entry
rescue, it must confirm, prior to entry,
that emergency assistance will be
available in the event that non-entry
rescue fails. OSHA expects this
confirmation will typically involve a
quick phone call or other
communication to establish availability
before making the first entry. The
employer need not repeat such
confirmation when there are several
entries planned as part of the same
project, provided the employer
discusses during the initial contact with
the rescue service the availability of
emergency assistance for the expected
duration of the project. This
confirmation is especially important if
the employer uses a 911 service or other
third-party service that is small and has
few teams on call because the service
must be available to provide emergency
assistance quickly when needed if the
assistance is to be effective. In the event
emergency assistance is summoned,
OSHA anticipates that the emergency
assistance provider will assume
direction of the rescue and would
request any other information it deems
essential to effectively provide
assistance, and notes that employers
may be required by other laws to
comply with the emergency assistance
requests for information. OSHA is not
requiring the employer to provide other
specific information at the site out of
concern that such a requirement might
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slow the rescue process if it compels the
employer to provide information not
needed by the emergency assistance
provider. Note that arranging for
emergency assistance is not the same as
providing for entry rescue; emergency
assistance is intended as the backup for
the employer’s rescue plan, whether the
employer relied on entry or non-entry
rescue. Entry rescue requires personnel
trained to recognize the hazards
associated with entry rescue and
perform entry rescue duties. These
personnel must be trained in performing
entry rescues and must have practiced
such a rescue within the past year.
Employers must designate entry
rescuers when non-entry rescue is not
an appropriate option. Emergency
assistance is intended to supplement
employer rescue efforts and provide
emergency care to employees injured on
site and/or rescued from a confined
space. Emergency assistance is required
if there is a problem with a non-entry
rescue or with an entry rescue.
The non-entry rescue requirements
are based on the general industry
standard, but provide additional
guidance. While there is no
corresponding provision stated
explicitly in the general industry
standard at § 1910.146, § 1910.146(d)(9)
requires employers to develop plans to
summon emergency services and for
rescuing personnel. In final
§ 1926.1204(i), OSHA clarified that, if
the entry employer uses non-entry
rescue as the designated method of
rescue, the employer must develop a
procedure for summoning emergency
assistance in case the non-entry rescue
is not able to retrieve the entrant.
Emergency assistance, such as a 911
emergency-responder service or an onsite or off-site entry-rescue team, may
prevent such a situation from resulting
in injury or death, so it is critical that
emergency assistance be available to
respond to the emergency.
In final § 1926.1211(c), OSHA also
clarifies that, if the employer determines
that it will use entry rescue, it must
designate a rescue service that is
capable of providing entry rescue.
Additionally, it sets requirements for
non-entry rescue systems; these
requirements do not differ substantively
from the corresponding general industry
provision.26
26 As with the general industry standard, the
construction standard relies on existing fallprotection requirements to ensure the proper use of
fall-protection equipment. Final § 1926.1211(c) does
not address the issue of fall protection for entry
into, and exit from, vertical type permit spaces; 29
CFR part 1926, subpart M, and the General Duty
Clause, 29 U.S.C. 654(a)(1), govern fall protection in
construction.
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Paragraph (c)(1). Final
§ 1926.1211(c)(1), which is similar to
the general industry standard at
§ 1910.146(k)(3)(i), requires an employer
to provide each employee with a chest
harness or full body harness for most
non-entry rescue, but permits use of
wristlets or anklets if the employer can
demonstrate that the chest or full body
harness is infeasible or creates a greater
hazard. A chest or full-body harness
prevents further injury should an
employee become suspended during a
rescue; without a chest or full-body
harness, injuries can result from the
unequal distribution of force on the
body during suspension (see the
preamble to OSHA’s final rule on fall
protection for construction at 59 FR
40672, 40702–40704 (Aug. 9, 1994), for
a detailed discussion of this issue.)
One commenter asserted that OSHA
should require the use of a full-body
harness to perform rescue in every
instance because it is the most effective
means of rescue (ID–210, Tr. p. 68).
OSHA disagrees with this commenter.
Permit spaces come in many different
sizes and configurations, which may
make a chest harness more appropriate
than a full-body harness in some
circumstances.
This provision also provides that the
employer must place the retrieval line
attached to the harness on the entrant’s
back near shoulder level, over the
entrant’s head, or at another point that
will establish a small enough profile for
successful removal of the entrant from
the permit space. One commenter
agreed that it was safer to attach the line
to the entrant’s back, rather than the
chest (ID–095).
Final § 1926.1211(c)(1) differs from
the general industry standard at
§ 1910.146(k)(3)(i) in that it includes
both anklets and wristlets as acceptable
means of retrieval in lieu of a harness
in limited circumstances. Employers
can use wristlets or anklets in lieu of a
harness only if the employer can
demonstrate that the use of a harness is
infeasible or creates a greater hazard to
the employee, and that the use of the
wristlets or anklets is the most effective
alternative available. Proposed
§ 1926.1213(a)(4)(iii) permitted
employers to use ankle straps, along
with wristlets, for non-entry rescue
under limited conditions. One
commenter supported this proposed
minor change from the general industry
standard, asserting that anklets may be
the safest alternative in horizontal
entries (ID–094). However, because of
the potential safety advantages of the
chest and full-body harnesses, the
Agency believes that it is necessary to
limit the circumstances when employers
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can use either wristlets or anklets to
those in which the employer can
demonstrate that use of a harness is
infeasible or a greater hazard than
wristlets or anklets because of the
increased risk of employee injury during
a rescue.
Paragraph (c)(2). Final
§ 1926.1211(c)(2), which is identical to
the general industry standard at
§ 1910.146(k)(3)(ii), requires an
employer to use a retrieval line attached
to a mechanical retrieval device or fixed
point outside the permit space so that
non-entry rescue can begin as soon as
needed. It also requires an employer to
use a mechanical device to retrieve
personnel from spaces more than five
feet deep. This provision reduces the
elapsed time between an attendant
determining that a rescue is necessary
and commencing the PRCS rescue
operation by requiring the essential
parts of the retrieval system to already
be in place and attached to the
mechanical device or fixed point. This
requirement will eliminate further
injury or death due to the delay
resulting from locating and attaching
retrieval-system parts and equipment.
The requirement to use a mechanical
device for spaces more than five feet
deep is consistent with the general
industry standard and ANSI Z117.1.
Securing the line to an anchor point or
using an un-mechanized pulley for
retrievals over five feet could endanger
the authorized entrant because
designated non-entry rescuers may not
have sufficient strength and stamina to
lift a disabled entrant over a vertical
distance of more than five feet.
One commenter asserted that OSHA
should require a mechanical retrieval
device for all heights when the
employer conducts non-entry rescue
(ID–211, Tr. pp. 43–44). Another
commenter asserted that OSHA should
recognize that mechanical winches and
pulleys are sometimes necessary based
on job conditions (ID–108, p. 2). Neither
commenter provided any evidence that
attendants encountered difficulty
retrieving entrants from distances of less
than five feet, or pointed to any
problems that arose in the context of the
general industry standard or ANSI
Z117.1, both of which include the same
five-foot threshold. Without additional
support for imposing this requirement,
OSHA decided to retain the language
from the general industry standard.
Nothing in this standard, however,
precludes use of mechanical retrieval
devices for retrievals from heights of
less than five feet.
Proposed § 1926.1213(a)(2)(iv)(B) also
provided that movable equipment (for
example, earth-moving equipment) that
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is ‘‘sufficiently heavy to serve as an
anchor point,’’ may be used for that
purpose only if effectively locked out or
tagged out. Two commenters expressed
concern about movable equipment as an
anchor point. One commenter stated
that many accidents occurred in the past
when using a pick-up truck as a fixed
point without notifying the driver of the
truck, who then unexpectedly moved
the truck. This commenter urged that
this provision include ‘‘proper
protocols’’ to ensure that such a
situation did not recur (ID–025, p. 4).
Another commenter noted that OSHA’s
construction standards do not include
an equivalent to the Lockout/Tagout
standard for general industry. The
commenter, therefore, urged OSHA to
include a more protective requirement,
asserting that a requirement to ‘‘lock
out’’ or ‘‘tag out’’ equipment, without
additional detail, would ‘‘be subject to
various interpretations,’’ and could
result in unexpected activation of the
equipment (ID–143, p. 2).
OSHA recognizes that on a
construction site, a piece of moveable
equipment may sometimes be the most
accessible fixed point, but
acknowledges the commenter’s concern
that such equipment is moveable, even
if it has sufficient weight. Thus, under
this final rule, an employer must ensure
that any movable equipment used as a
fixed point is ‘‘fixed,’’ meaning that it is
sufficiently heavy (such as earth-moving
equipment) to prevent movement, and
that it is subject to additional
precautions to prevent unexpected
movement. Accordingly, as in the
proposed requirement, to determine
whether a retrieval line that is attached
to moveable equipment is ‘‘attached to
a . . . fixed point’’ under final
§ 1926.1211(c)(2), OSHA will evaluate
whether the moveable equipment is
effectively locked out or tagged out. In
particular, OSHA will use the final
rule’s definitions of ‘‘lockout’’ and
‘‘tagout’’ in making that determination,
which partially address the
commenter’s concern by bringing the
lockout/tagout process closer to the
protection offered by the general
industry standard. For example, as part
of the tagout process, an employer must
ensure that tagout provides ‘‘equivalent
protection’’ to lockout or that lockout is
infeasible. Consequently, the employer
must take whatever measures are
necessary to prevent unexpected
energization or movement of the
equipment. Placing a ‘‘do not move’’ tag
in the truck or other equipment would
not be sufficient by itself. Typically,
such measures include activating an
emergency brake or similar device,
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removing the key from the equipment
after ensuring that duplicates are not
readily available on the site, placing a
tag on the equipment to warn others not
to start it, and informing any potential
operator(s) not to move the equipment
while it is serving as a fixed point for
rescue. If the equipment is capable of
activation by remote control, then the
employer must secure the remote
control or disable that capability to
prevent unexpected movement.
Final § 1926.1211(c)(2) is performance
oriented, and allows flexibility in the
design specifications of the retrieval
equipment, subject to the requirements
of § 1925.1211(c)(3) (equipment must be
suitable). One commenter asserted that
there are many instances when the use
of a tripod assembly with a three-way
retrieval system is effective (ID–060, p.
1). Final § 1926.1211(c)(2) does not
prohibit the use of such a device if it
meets the requirements of this
subparagraph. A different commenter
asserted that final § 1926.1211(c)(2)
should be performance based because of
ongoing advancements in confinedspace retrieval equipment, and
suggested incorrectly that the proposed
rule limited retrieval by specifying the
use of anchor points or simple pulleys
(ID–116, p. 3). The definition of
‘‘retrieval system’’ in final § 1926.1202
is performance based, and allows for
technological advancements in retrieval
equipment. This definition does not
limit retrieval to the use of anchor
points or simple pulleys.
One commenter asserted that final
§ 1926.1211(c)(2) should require an
employer to have the retrieval system
located at the confined space opening
(ID–025, p. 4). Final § 1926.1211(c)(2)
requires the employer to have the
retrieval system available as soon as
needed, which ensures that rescue can
begin immediately. Another commenter
asserted that the proposed language
‘‘available as soon as needed’’ was too
vague, and that a retrieval device could
satisfy this provision even if kept
elsewhere on the worksite and not
installed (ID–095, p. 4). Final
§ 1926.1211(c)(2) addresses this
commenter’s concern by requiring
attachment of the retrieval line to the
appropriate retrieval mechanism (a
mechanical device if the depth exceeds
five feet, or a fixed anchor point for
shallower entries) ‘‘in such a manner
that retrieval can begin as soon as the
rescuer becomes aware that rescue is
necessary,’’ thus ensuring that the line
will be available and ready for use when
needed. If the retrieval device is not at
the opening of the permit space, then
the employer is responsible for
demonstrating that it could initiate
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retrieval immediately as soon as the
rescuer becomes aware that rescue is
necessary.
Paragraph (c)(3). Final
§ 1926.1211(c)(3) prohibits an employer
from using equipment that is unsuitable
for retrieval, such as retrieval lines
likely to become entangled or that are
ineffective due to the configuration of
the PRCS. Final § 1926.1211(c)(3) is
similar to proposed § 1926.1213(a)(4).
There is no corresponding provision in
§ 1910.146.
A retrieval device, for example, would
not be suitable unless it is designed and
rated for human use. The provision does
not require certification of the retrieval
system, but OSHA will accept
certifications by manufacturers, as well
as listing by a Nationally Recognized
Testing Laboratory, as evidence of the
proper design and rating. If the
employer fabricates its own retrieval
device, OSHA will look for evidence
that the employer designed,
manufactured, tested, and certified the
retrieval device in accordance with
generally accepted industry practices
(for example, by a registered
professional engineer).
This final provision prohibits the use
of retrieval lines that have a reasonable
probability of becoming entangled with
the retrieval lines used by other
authorized entrants, or due to the
internal configuration of the PRCS. The
Agency believes that there are situations
in which the retrieval lines of two or
more employees can become entangled,
such as when the employees’ work
requires that they move around each
other. There are also a variety of
situations in which the configuration of
the PRCS would interfere with a nonentry rescue and cause further serious
injury to authorized entrants in need of
rescue. For example, the permit space
may have objects or equipment
protruding from its walls, or sharp
corners that may damage rescue
equipment or prevent the use of certain
types of non-entry rescue equipment.
Final § 1926.1211(c)(3) also prohibits
the use of other unsuitable equipment,
such as equipment that increases the
overall risk of entry or impedes rescue
of an authorized entrant. Under final
§ 1926.1211(c)(3), the mechanical
retrieval device used must be
appropriate for rescue service. This
requirement follows the general
industry standard, which was based on
the record in that rulemaking indicating
that incapacitated entrants could easily
be bounced around, torn apart, or
impaled if too much torque was applied
to the retrieval line or the retraction of
the line was not precisely controlled
(see the general industry preamble
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discussion at 58 FR 4531). Accordingly,
the employer must not use any
mechanical device, such as a fork lift or
backhoe, that could injure the entrant
during rescue. Using a material hoist to
both haul material and to serve as a
rescue retrieval system during an entry
operation also is not acceptable. In such
a situation, the material hoist would not
be available for rescue when it is
hauling materials; further delay would
result when, during a rescue operation,
the attendant would have to detach the
retrieval line from the materials and
attach it to the employee requiring
rescue. See Oct. 6, 1995, letter to Mr.
Joseph Bouchard. The employer also
must not use powered winches without
a stop clutch or other power-limiting
device. Such winches can cause injuries
to an entrant if the entrant becomes
entangled on an object inside the permit
space, but the winch continues to pull
the entrant (58 FR 4462, 4531 (Jan. 14,
1993)).
Prohibiting such unsuitable
equipment will reduce the injuries and
deaths that would result from the use of
unsuitable retrieval equipment during
rescue operations. The Agency did not
receive any comments objecting to the
propriety of this approach and,
therefore, finalized this proposed
prohibition of unsuitable rescue
equipment.
Paragraph (d). Final § 1926.1211(d),
which is identical to § 1910.146(k)(4),
requires an employer to provide
relevant information about a hazardous
substance to a medical facility treating
an entrant exposed to the hazardous
substance if the substance is one for
which the employer must keep a safety
data sheet (SDS) or other similar
information at the worksite. The Agency
recognizes that such information may
already be available to medical facilities
from other sources (such as state
emergency-planning commissions), and
that SDS or similar written information
may not be available in some instances.
However, because the timely provision
of this information may be critical to the
proper medical treatment of an injured
employee, and this final standard limits
the requirement to SDS or other similar
written information that the employer
already must keep at the worksite,
OSHA concludes that the potential
significance of this information to the
health of the employee outweighs any
minimal burden on the employer
associated with providing this
information. Such information would
aid emergency medical services and
medical facilities in correctly
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25453
diagnosing and treating the employee
rescued from the permit space.27
Section 1926.1212—Employee
Participation
This section provides for employee
participation in confined space
programs. The provisions in final
§ 1926.1212 are nearly identical to the
provisions in the general industry
confined spaces rule at § 1910.146(l).
Final § 1926.1212 differs from
§ 1910.146(1) in that it refers to ‘‘each
affected employee’’ rather than ‘‘affected
employees,’’ to emphasize that an
employer’s responsibility in this area
flows separately to each employee, but
the employer’s obligation remains
unchanged. In the proposed rule,
employee participation was limited to
the requirement in proposed rule
§ 1926.1204(e) that employers offer
entry employees the opportunity to
observe the evaluation and monitoring
of the permit space. One commenter
suggested that OSHA restore the
employee participation requirement
from the general industry rule for the
reasons OSHA added paragraph (l) to
the general industry rule in 1998, and
also noted that no commenters who
favored using the general industry
format raised any objections to its
employee participation requirements
(ID–0220 p. 26–28). OSHA agrees, and
notes that the use of the general
industry language is particularly
warranted because the final rule
requires a written permit-space program
in final § 1926.1203(d), which was not
required in the proposed rule, so final
§ 1926.1212(a) would ensure that
employees bring their experience to bear
regarding that program.
Paragraph (a). Final § 1926.1212(a),
which is nearly identical to the general
industry standard at § 1910.146(l)(1),
requires employers to consult with
affected employees and their authorized
representatives in the development and
implementation of the permit-space
program required by final § 1926.1204.
Allowing employees and their
authorized representatives to participate
in this manner will contribute to
confined space safety. Commenters on
the 1998 amendments to the confined
space standard that added § 1910.146(l)
noted that employees who work in
confined spaces and their
representatives are particularly well
qualified to contribute to the task
analysis that is a necessary step in
developing a confined space program
27 The employer must provide this information if
other applicable Federal regulations (such as
§ 1910.1200—Hazard communication) or state
regulations already require the employer to keep the
SDS or other written information at the worksite.
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(63 FR 66018 (Dec. 1, 1998)). One
commenter provided an example of
when he, as an employee representative,
was able to identify dangerous adhesive
fumes in a confined space that could
have otherwise harmed the two
employees in that space who did not
identify the danger (ID–010). These
employees are most familiar with the
practices used during confined space
entries. If those practices differ
significantly from the practices planned
by the employer, the employer needs to
know of the differences and take
appropriate steps to remedy any
deficiencies in the permit-entry
procedures. Likewise, employees may
know of hazards within the space that
non-entrants are not taking into
consideration. This provision leaves the
final contents of the confined space
program up to the employer, but, by
doing so, this provision should promote
safety and avoid the need to develop a
cumbersome procedure to resolve
conflicts between employers and
employees regarding confined space
entries.
Final § 1926.1212(a) also is consistent
with Section 2(13) of the OSH Act, 29
U.S.C. 652(13), which emphasizes
employer-employee cooperation by
stating that one of the purposes of the
Act is to ‘‘encourage joint labormanagement efforts to reduce injuries
and disease arising out of employment.’’
Congress reiterated this purpose in a
directive to OSHA to promulgate a
Process Safety Management (PSM)
standard; this directive explicitly
provides for employee involvement in
the development of the process safety
management programs mandated by that
standard (see Chemical Process Safety
Management, Pub. L. 101–549, Title III,
sec. 304(c)(3) (1990), reprinted at 29
U.S.C.A. 655 note (Supp. 1991)). OSHA
also has a longstanding practice of
encouraging and promoting employeremployee cooperation as exemplified in
its 1989 Safety and Health Program
Management Guidelines (54 FR 3904);
these guidelines recognize the
importance of involving employees in
safety and health programs at the
workplace. OSHA’s experience in
enforcing the employee-participation
requirements under the PSM standard
and the general industry confined
spaces standard convinced the Agency
of both the value and the utility of the
provision in paragraph (a).
Paragraph (b). Final § 1926.1212(b),
which is nearly identical to
§ 1910.146(l)(2), requires that affected
employees and their authorized
representatives have access to all
information developed under this
standard, with the clarification that this
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obligation applies to each employee.
Other sections of this standard, such as
final § 1926.1203(d), already require that
employers make some information
available to employees and their
representatives. OSHA is adding this
provision for purposes of emphasis and
clarification. This provision emphasizes
that employees and their representatives
have a right to all information
developed under the rule affecting their
health and safety. Final § 1926.1212(b)
does not require employees or their
authorized representatives to request or
review this information; however, it
provides them with the option of
requesting and reviewing the
information should they choose to do
so. Employers need not provide separate
copies of the information to each
employee; employers have flexibility in
determining how to distribute the
information so long as each employee
can access it.
Section 1926.1213—Provision of
Documents to Secretary
Final § 1926.1213 requires each
employer who must retain
documentation under this final rule to
make that documentation available to
the Secretary of Labor, or a designee,
upon request. Final § 1926.1213 is
similar to proposed rule § 1925.1219(e).
There is no corresponding provision in
§ 1910.146. OSHA added this provision
to enable the Agency to more accurately
identify potential safety hazards at a
worksite and to monitor compliance
with the requirements of this standard.
The request from the Secretary or the
Secretary’s designee (for example,
OSHA) may be either oral or written.
Unless another provision of this
standard requires employers to maintain
a document at the worksite, the
employer may maintain these
documents off site as long as the
employer can produce them readily to
the requesting official, such as through
electronic transmission to the worksite
where OSHA is conducting an
inspection. These documents pertain to
the determinations made, and actions
taken, regarding hazards. They provide
valuable information to use when
inspecting the worksite, including
evaluating any potential safety hazards.
At least one commenter objected to
this requirement, asserting that OSHA
should have to demonstrate a need for
a specific document and obtain a
subpoena, and that this requirement is
a paperwork burden and will not
increase safety (ID–075, p. 11).
Requesting such documentation is
already part of OSHA’s standard
inspection practice under the general
industry standard, as it is under many
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other standards. See CPL–02–00–100,
CPL–02–00–150. This provision creates
no new retention requirement—it
merely confirms that when employers
are already required to maintain
records, they must make those records
available to the Secretary. The provision
provides employers with flexibility in
where and how such records are
maintained. Though there is a small cost
to this provision, OSHA believes the
safety benefit of identifying any
potential safety hazards supports the
inclusion of this provision.
IV. Agency Determinations
A. Legal Authority
The purpose of the OSH Act, 29
U.S.C. 651 et seq., is ‘‘to assure so far
as possible every working man and
woman in the Nation safe and healthful
working conditions and to preserve our
human resources.’’ 29 U.S.C. 651(b). To
achieve this goal, Congress authorized
the Secretary of Labor to promulgate
and enforce occupational safety and
health standards. 29 U.S.C. 654, 655(b),
658.
A safety or health standard ‘‘requires
conditions, or the adoption or use of one
or more practices, means, methods,
operations, or processes, reasonably
necessary or appropriate to provide safe
or healthful employment and places of
employment.’’ 29 U.S.C. 652(8). A safety
standard is reasonably necessary or
appropriate within the meaning of 29
U.S.C. 652(8) if:
• It substantially reduces a significant
risk of material harm in the workplace;
• It is technologically and
economically feasible;
• It uses the most cost-effective
protective measures;
• It is consistent with, or is a justified
departure from, prior Agency action;
• It is supported by substantial
evidence; and
• It is better able to effectuate the
purposes of the OSH Act than any
relevant national consensus standard.
See United Auto Workers v. OSHA, 37
F.3d 665, 668 (D.C. Cir. 1994) (Lockout/
Tagout II). In addition, safety standards
must be highly protective. See id. at 669.
A standard is technologically feasible
if the protective measures it requires
already exist, available technology can
bring these measures into existence, or
there is a reasonable expectation for
developing the technology that can
produce these measures. See, for
example, American Iron and Steel Inst.
v. OSHA (Lead II), 939 F.2d 975, 980
(D.C. Cir. 1991) (per curiam). A standard
is economically feasible when industry
can absorb or pass on the costs of
compliance without threatening
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industry’s long-term profitability or
competitive structure. See American
Textile Mfrs. Inst. v. Donovan, 452 U.S.
490, 530 n. 55 (1981); Lead II, 939 F.2d
at 980. A standard is cost effective if the
protective measures it requires are the
least costly of the available alternatives
that achieve the same level of
protection. See, for example, Lockout/
Tagout II, 37 F.3d at 668.
Section 6(b)(7) of the OSH Act
authorizes OSHA to include among a
standard’s requirements labeling,
monitoring, medical testing, and other
information-gathering and informationtransmittal provisions. 29 U.S.C.
655(b)(7). Finally, the OSH Act requires
that when promulgating a rule that
differs substantially from a national
consensus standard, OSHA must
explain why the promulgated rule is a
better method for effectuating the
purposes of the Act. 29 U.S.C. 655(b)(8).
OSHA explains deviations from relevant
consensus standards elsewhere in this
preamble.
B. Final Economic Analysis and Final
Regulatory Flexibility Analysis
1. Introduction
The Occupational Safety and Health
Administration (OSHA) finalized its
safety standard for confined spaces in
construction work. When appropriate,
this final standard aligns with the
confined-spaces standard for general
industry (29 CFR 1910.146), although it
also has distinctive characteristics for
construction worksites. The pre-existing
rule on confined spaces in construction,
29 CFR 1926.21(b)(6), which this final
rule replaces, is merely a general
training requirement that lacks the
specificity and protections that the
general industry rule—and this final
standard—provide.
The final standard differs from the
earlier proposed standard. OSHA
revised the proposal in response to
numerous stakeholder comments,
including those from the Office of
Advocacy of the Small Business
Administration (ID–119), which
indicated that employers in
construction in large part followed the
general industry standard and,
therefore, preferred that this final rule
not depart substantially from general
industry standard. However, this final
rule includes important requirements
(also present in the proposed rule) to
address communication, worksite
evaluation, and training, which are
absent from, or not as clearly specified
in, the general industry standard.
The final standard establishes
practices and procedures that apply to
employers that have workers who enter
confined spaces during construction
work, including major renovation
projects. The final standard does not
apply to routine maintenance activities,
which the general industry standard
covers instead.
Work in confined spaces involves a
significant risk of death or serious
injury, which compliance with this rule
will reduce substantially. OSHA
estimates that full compliance with this
final rule will prevent an average of
approximately 5.2 fatalities and 780 lost
workday injuries each year. In
particular, the Agency believes that
compliance with this final rule will
avert injuries and fatalities from causes
such as asphyxiation, chemical burns,
scalds, and poisonings.
Not all confined spaces pose
occupational hazards. However, there
are spaces that employees can enter
only after employers follow specific
procedures to ensure safety. Pursuant to
the final rule, employers must develop
and implement permit programs or use
specified alternative procedures when
employees work in such spaces. The
standard sets forth the requirements for
evaluating hazards, identifying and
classifying confined spaces, and issuing
permits or implementing alternative
procedures. When the standard requires
a permit to enter a confined space, the
employer must maintain a written
program and review it annually, and
prepare and post a permit for the space.
25455
Employers also must adopt a variety of
safety measures, including isolation
procedures, atmospheric testing,
ventilation, monitoring, and
arrangements for rescue and emergency
assistance.
As shown in Table IV–1 below, OSHA
estimates that the final rule will result
in yearly compliance costs of $60.3
million (using a discount rate of 7
percent), and yearly safety benefits,
based on lives saved and injuries
prevented, of $93.6 million. Therefore,
the benefits of this final standard
outweigh the costs of complying with its
provisions, yielding net benefits of
$33.3 million a year. Compliance with
the final standard will result in
approximately $1.55 of benefits for
every dollar of costs.
Based on the analysis presented in
this FEA, OSHA concludes that this
final standard is technologically and
economically feasible for all affected
industries.
This FEA includes numerous analyses
OSHA is required to perform, including
the findings of technological and
economic feasibility and their
supporting materials required by the
OSH Act as interpreted by the courts (in
sections 5, and 7, which depend on
results derived in sections 3 and 6); the
analyses required by E.O. 12866 and
E.O. 13563 (primarily in sections 2, 4,
6, and 9, though these depend on
material in section 3); and those
required by the Regulatory Flexibility
Act (the final regulatory flexibility
analysis is presented in section 8, but
depends on or refers to results in section
3, 6 and 7 which in turn depend, in part,
on materials presented in other
chapters). Terminology and analytic
methods and standards appearing in a
particular chapter correspond to the
source(s) of that chapter’s requirements;
for example, the legal concept of
‘‘economic feasibility,’’ which is a key
subject of section 7, is not recognized in
E.O.s 12866 or 13563 or their associated
guidance document, OMB Circular A–4.
TABLE IV–1—NET BENEFITS
[Millions of 2009 dollars]
7% Discount
rate
3% Discount
rate
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Annualized Costs
Evaluation, Classification, Information Exchange and Notification .........................................................................
Written Program, Issue Permits, Verify Safety, Review Procedures ......................................................................
Provide Ventilation and Isolate Hazards .................................................................................................................
Atmospheric Monitoring ...........................................................................................................................................
Attendant ..................................................................................................................................................................
Rescue Capability ....................................................................................................................................................
Training ....................................................................................................................................................................
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$12.4
$4.2
$2.8
$11.4
$3.6
$8.2
$11.3
$12.2
$4.2
$2.7
$11.3
$3.6
$7.6
$11.3
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Federal Register / Vol. 80, No. 85 / Monday, May 4, 2015 / Rules and Regulations
TABLE IV–1—NET BENEFITS—Continued
[Millions of 2009 dollars]
7% Discount
rate
3% Discount
rate
Other Requirements ................................................................................................................................................
$6.4
$6.3
Total Annual Costs ...........................................................................................................................................
$60.3
$59.2
Number of Injuries Prevented ..............................................................................................................................................................
Number of Fatalities Prevented ...........................................................................................................................................................
Monetized Benefits ..............................................................................................................................................................................
780
5.2
$93.6
Annual Benefits
Net Annual Monetized Benefits (Benefits Less Costs)
$33.3
The remainder of this FEA contains
the following chapters:
2. The Need for Regulation
3. Profile of Affected Industries
4. Benefits and Net Benefits
5. Technological Feasibility
6. Costs of Compliance
7. Economic Feasibility Analysis and
Regulatory Flexibility
Determination
8. Final Regulatory Flexibility Analysis
9. Sensitivity Analysis
10. References
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2. The Need for Regulation
OSHA previously considered nonregulatory alternatives and established
the need for regulation of work in
confined spaces when it promulgated
the general industry standard (58 FR
4548). The Agency asserts that the same
need for regulation applies when
employers are entering these spaces to
perform construction work. Confined
spaces in construction expose
employees to a variety of significant
hazards, including engulfment, electric
shock, burn, and atmospheric hazards
that cause serious injury and death.
Although better compliance with
existing safety standards may prevent
some of these incidents, research and
analyses conducted by OSHA found that
many preventable injuries and fatalities
would continue to occur even if
employers fully complied with the
existing standards. Relative to full
compliance with the existing standards,
OSHA estimates, in Chapter 4 of this
FEA, that full compliance with the final
standard would prevent an estimated
additional 780 injuries and 5.2 fatalities
annually.
Executive Order 12866 provides that
‘‘[e]ach agency shall identify the
problem that it intends to address [via
regulation] . . . including, where
applicable, the failures of private
markets.’’ Executive Order 13563
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reiterates that requirement. In the
absence of this regulation, many
construction employees would not
know about or recognize the hazards
that confined spaces, or the procedures
to follow to protect against such
hazards. Even those employees with
years of experience in construction
work may lack training on confined
spaces, information about specific
onsite confined-space hazards,
equipment needed to monitor and
ventilate confined spaces, or rescue
procedures and equipment.
The final standard for confined spaces
in construction addresses these
problems. The benefits analysis
presented in Chapter 4 of this FEA
shows that many accidents are
potentially preventable with better
information on confined spaces and
worksite conditions and the proper
confined-space procedures and
equipment. When employers provide
confined-spaces training, that training
may be incomplete or ineffective in the
absence of a specific set of construction
requirements addressing training for
confined spaces.
To better understand the market
failures that make this final rule
necessary, OSHA examined the
economic incentives that underlie
employer decisions with respect to
workplace safety and health. An
employee typically accepts the risks
associated with a particular job in return
for two forms of compensation: (1) A
wage premium for assuming that risk;
and (2) expected compensation for
damages in the event of occupational
injury or illness. The rational profitmaximizing employer will make
investments in workplace safety to
reduce the level of risk to employees
only if such expenditures result in at
least an offsetting reduction in the
employer’s payouts of wage premiums
for risk and compensation for damages.
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$34.4
To the extent that the sum of the costs
of wage premiums and compensation
for damages accurately represent the
total damages associated with
workplace accidents, the rational
employer will accordingly arrive at the
socially optimal level of accident
prevention from an economic efficiency
viewpoint.
Consequently, the major possible
sources of market failure, resulting in an
‘‘under-provision’’ of health and safety,
would be either: (1) The existence of
occupational accident costs borne
neither by the employee nor by the
employer, or (2) the wage premiums or
compensation for damages are not fully
responsive to changes in employerspecific workplace risk. Both cases
apply here.
In the first case, there are some nonfatal occupational injury and illness
costs incurred by neither the employer
nor the employee. For instance, neither
employers nor employees have a vested
interest in Federal and State taxes that
go unpaid as a result of an employee
injury. Such taxes typically represent 15
percent (for Social Security alone) to 26
percent of the total value of the income
loss to the employee (IRS, 2013; Urban
Institute/Brookings, 2012).28 Workers’
compensation payments are not subject
to Federal income or Social Security
taxes (IRS, 2012), and many studies find
that income losses not compensated by
workers’ compensation are significant
(NASI, 2012).
In the second case, as discussed
below, the costs employers pay in
compensation for damages or wage
premiums are not fully responsive to
changes in employer-specific workplace
risk. Accordingly, most employers cover
compensation for injured employees
28 The average Federal tax rate for 2009 for the
middle quintile of household income was 11.1
percent (Urban Institute/Brookings, 2012).
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through workers’ compensation
insurance. (Some very large employers
may self-insure in some states.) States
highly regulate premiums for workers’compensation insurance and, generally,
employ a combination of a class rating
and an experience rating in deriving
premiums (NCCI, 2013; Ashford, 2006).
States base the class rating on the
average risk for employees in the same
occupations as those working for the
employer. The basis of the experience
rating is the employer’s actual workers’compensation claims over the past
several years. States use class rating for
almost all very small firms and some
medium-sized firms. Very large firms
use either experience rating, but it takes
several years before their insurance
premiums account fully for changes in
their workplace safety performance.
States assign many firms a combination
of class and experience ratings.29 As a
result, most employers will not receive
full or prompt reductions in their
workers’ reduced premiums for the
expenditures they made to prevent
workplace injuries, illnesses, and
fatalities. From a societal perspective,
the result is an insufficient level of
worker protection.
Furthermore, workers’ compensation
covers only a small fraction of most
estimates of the willingness to pay to
prevent a fatality.30 Additionally,
workers’ compensation payments do not
fully compensate injuries in that
workers’ compensation provides no
payments for pain and suffering, or
losses other than lost wages or medical
expenses associated with injuries. There
is extensive evidence that workers’
compensation does not even fully
restore wages lost as a result of longterm disability (Ashford, 2006).
Having to pay wage premiums for risk
is another economic incentive for
employers to mitigate occupational risk.
However, wage premiums do not
respond strongly to variations in risk
level due to information asymmetries.
For an employer to have an adequate
incentive to implement measures that
will prevent workplace incidents, it is
not sufficient that employees simply
29 Premiums due to class rating, by definition, do
not vary with an individual employer’s injury
experience. There is some empirical evidence,
using a difference in differences methodology,
showing that (small) firms that move from class
rating to experience rating decrease their total
claims by 8 to 12 percent (Neuhauser et al., 2013).
30 While workers’ compensation varies by state,
Leigh and Marcin (2012) estimate that the average
indemnity benefit for a fatality is $225,919, far less
than willingness-to-pay estimates. For example, as
explained in Chapter 4 of this FEA, OSHA uses a
willingness-to-pay measure of $8.7 million per life
saved in 2009 dollars. Other agencies use different
estimates, but all the values are in the millions of
dollars.
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know that their work is dangerous, or
even know quantitatively that their
occupation has a specific risk.
Employees must know the exact types,
and the likely quantitative effects, of
safety measures and systems used by
their employers; have a reasonable
expectation that their employer will
continue to provide existing safety
measures in the future; and be able to
act on their knowledge of risk by readily
changing workplaces or wage demands
in response to differences in levels of
risk.31 OSHA believes that even skilled
construction workers (including some
workers injured in accidents
preventable by the final rule who fall
into that category) lack such detailed
employer-specific knowledge, or the
ability to act on it. Further, construction
employees who typically work at a
variety of different sites, including sites
controlled by multiple employers, will
find it particularly challenging to
determine future risk levels, as these
levels will vary from site to site.
In summary, OSHA believes that: (1)
Neither employers nor employees
absorb the full costs of occupational
injuries and fatalities; and (2) wage
premiums and workers’-compensation
insurance are not sufficiently responsive
to variations in risk to assure that
employers will reduce risk to the
socially optimal level. This final rule,
therefore, is necessary to address market
failures and insufficient levels of worker
safety that result from externalities and
information asymmetries.
OMB’s Circular A–4 (OMB, 2003)
states that ‘‘a demonstration of
compelling social purpose and the
likelihood of effective action’’ may
provide the basis for a Federal
regulation. The OSH Act provides a
Congressional finding as to the
compelling social need for assuring
occupational safety. Congress declared
that the purpose of the OSH Act is ‘‘to
assure so far as possible every working
man and woman in the Nation safe and
healthful working conditions.’’ 29
U.S.C. 651(b). Further, by emphasizing
‘‘every working man and woman,’’
Congress expressed an interest in
preventing unsafe workplaces to the
extent feasible, not simply in assuring
that, on average, workplaces are safe.
Thus, while some employers are
excessively cautious about risk, while
others are insufficiently cautious,
OSHA’s concern needs to be with the
insufficiently cautious employers.
31 Furthermore, bargaining power differences or
external constraints must not interfere in the wage
setting process as these factors do in circumstances
such as monopsony or multiemployer collectivebargaining agreement.
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25457
3. Profile of Affected Industries
This chapter presents a profile of the
industries affected by the final standard
for confined spaces in construction. It
includes, for each affected industry,
estimates of the number of firms,
establishments, and employees, as well
as the estimated number of
establishments affected annually by the
final standard. It also includes the
number and characteristics of entries
into confined spaces covered by the
final standard.
A preliminary profile of industries
appeared in OSHA’s Preliminary
Economic Analysis (PEA) that
accompanied the proposed standard
(ID–002). For this final analysis, OSHA
updated the profile to reflect the latest
available data from the Bureau of Labor
Statistics, the Bureau of the Census, the
Internal Revenue Service, and other
authoritative sources and to address
public comments. In addition, the
Agency organized the industries in this
final analysis according to the North
American Industry Classification
System (NAICS) rather than the
Standard Industry Classification (SIC)
system used in the PEA. This was
necessary because OSHA wished to
update the analysis using more recent
economic data and the more recent
economic data uses the NAICS rather
than the SIC system.
An analysis conducted by CONSAD
Research Corporation under contract
with OSHA served as the basis for the
PEA (ID–003). The CONSAD report
relied on a variety of sources, including
information provided by a panel of
construction industry safety experts in
1995 regarding characteristics of, and
entries into, confined spaces for 25
categories of construction projects, as
well as compliance rates for provisions
of the proposed standard. CONSAD
used F.W. Dodge data to estimate the
number of construction-project starts for
each project category, by size of project
One commenter, the Associated
General Contractors of America (AGCA),
presented an alternative economic
analysis of the proposed rule, prepared
by Dr. N. Mike Helvacian, based in part
on a survey of AGCA’s members (ID–
222). That economic analysis suggested
that the PEA omitted five affected
industries, including, by NAICS code:
238210 (Electrical Contractors); 221119
(Utilities—Other Electric Power
Generation); 221310 (Utilities—Water
Supply Irrigation); 236118 (General
Contractors in Residential Modeling);
and 238220 (Plumbing, Heating and Air
Conditioning Contractors). OSHA
included these five industries, other
than NAICS 221119 (Utilities—Other
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Electric Power Generation), in the
industry profile, and in the estimation
of compliance costs, for the final
standard.
For electric power-generation
industries (NAICS 221111, NAICS
221112, and NAICS 221113, in addition
to NAICS 221119, in the 2007 version of
NAICS), OSHA believes that most of the
confined-space entries performed are for
maintenance and repair subject to
General Industry requirements under
§§ 1910.146 and 1910.269. When the
size and scope of a project involving
entry into confined spaces is large or
complex enough that the work is
construction work as defined in
§ 1910.12(b), electric utilities typically
hire contractors in industries that are
already included in this FEA to perform
the work and confined-space entry.
Consequently, OSHA concluded that
employers in NAICS 221119 will
themselves rarely, if ever, perform work
covered by this final rule and, thus, will
incur no direct costs or negligible direct
costs to comply with the final standard.
By the same reasoning, OSHA did not
in the PEA, and did not in this FEA,
include any other electric powergeneration industries in its industry
profile or in its estimation of
compliance costs for the final standard.
Other commenters, including SBA
Advocacy, pointed out that OSHA did
not include single-family housing
projects in the analysis of compliance
costs in the PEA (see ID–119 and ID–
219). In its original analysis, the Agency
excluded single-family housing projects,
in part because the previously
mentioned panel of industry experts
found that such projects did not have
entries into confined spaces covered by
the standard (see ID–003, p. 3.54).
Comments in the record generally
indicate that there are a limited number
of confined-space entries in these
projects. For example, the National
Association of Home Builders (NAHB)
noted that ‘‘there is very limited
exposure to confined space hazards in
residential construction’’ (ID–117). In a
post-hearing brief, NAHB explained that
‘‘although it will happen only
occasionally, permit spaces may arise in
residential home construction, perhaps
when a subcontractor brings certain
chemicals . . . into a confined space,
such as into a crawl space, attic, or a
basement before steps are installed’’
(ID–219). OSHA agrees that, although
entry into confined spaces to conduct
work on home-building construction
sites is rare, it cannot rule out some
potential for exposure to confined-space
hazards for this sector of the
construction industry. Therefore, OSHA
included single-family home
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construction projects in this analysis by
adding NAICS code 236115, New
Single-Family Housing Construction
(except Operative Builders), to the scope
of this FEA.
In addition, OSHA believes that some
residential remodeling projects, such as
an expansion of an apartment building
or upgrading HVAC systems, plumbing,
or electrical systems in multi-family
housing, may constitute construction
activity. Therefore, for this FEA, OSHA
added costs for employers with
confined spaces in residential
remodeling projects to comply with the
final standard.
Another commenter stated that the
CONSAD report ‘‘specifically excludes
gas, water, sewer and municipal work
from their analysis. It is erroneous for
. . . the entire sewer construction
industry to be excluded from the
economic analysis’’ (ID–091). OSHA
points out that the PEA did not exclude
the entire sewer-construction industry.
Rather, the PEA excluded new waterand sewer-line construction projects
because such work typically involves
smaller lines and, therefore, does not
typically involve entries covered by the
rule. However, OSHA included entries
into existing storm sewers, sanitary
sewers, and sewer manholes for
construction work, including entries
involved in storm sewer and floodcontrol projects and sewer-, water-, and
waste-treatment plants, both in the PEA
and in this FEA. OSHA also discusses
in the economic feasibility analysis the
possibility that establishments in
industries that seldom have confined
space entries might occasionally have
one.
OSHA concludes that the final
standard will affect establishments in 15
six-digit NAICS codes. In particular, the
standard will affect firms that perform
construction work involving buildings,
highways, bridges, tunnels, utility lines,
and other types of projects. Also
potentially affected by the final rule are
general contractors, as well as specialtytrade construction contractors and
property owners.
Table IV–2 provides information on
the estimated number of projects for
each type of construction activity, as
well as the estimated number of entrants
per entry, number of entries, and
worker-entry hours in confined spaces.
OSHA based this information on the
estimates originally provided in the
CONSAD report.
Table IV–3 presents profile data on
the number of establishments, the
number of employees, and revenues and
profits for each affected industry sector.
The Agency updated this table from the
PEA using the more recent data from the
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2007 Statistics of U.S. Businesses from
the Census Bureau adjusted to 2009
dollars using the GDP deflator. This is
the same source of data used in the PEA.
These industries contain an estimated
combined total of over 500,000
establishments and nearly 5 million
employees. The annual combined
revenues of these industries in 2007
came to nearly $1.3 trillion (in 2009
dollars). Commercial and Institutional
Building Construction (NAICS 236220),
the largest of these industries in terms
of annual revenue, accounted for about
$393 billion of this total. However, due
to the type of the activity addressed by
this rule, OSHA modeled only a small
fraction of establishments in the affected
industries as performing construction
activities in confined spaces and bearing
the associated compliance costs in a
given year.32
OSHA updated the PEA estimates of
before-tax profit rates in Table IV–3
using more recent corporate balancesheet data from the Internal Revenue
Service’s Corporation Source Book (IRS,
2013). This is a more recent edition of
the same source of data used in the PEA.
For each of the years 2003 through 2007,
the Agency calculated profit rates as the
ratio of total receipts to net income by
NAICS group, and averaged profit rates
across the five-year period (2003–2007).
Since some data provided by the IRS
were not available at disaggregated
levels for all industries and profit rates,
OSHA used data at more highly
aggregated levels as a proxy for such
industries—that is, where data were not
available for each six-digit NAICS code,
OSHA used corresponding four- and
five-digit NAICS codes, as appropriate.
Table IV–4 presents profile data for
firms defined as small entities by the
Small Business Administration (SBA),33
and Table IV–5 presents profile data for
very small entities, defined as firms
with fewer than 20 employees. Table
IV–6 presents OSHA’s estimated
compliance rates for key provisions of
the final standard, which it discusses in
Chapter 6 of this FEA. Table IV–7
presents the wage rates, in 2009 dollars,
for the labor categories used in OSHA’s
cost analysis, while Table IV–14 in
Chapter 6 of this FEA presents other
unit-cost data used in the analysis.
32 Only some construction projects involve entry
into confined spaces.
33 OSHA converted revenue cutoffs for small
business designation to the closest employee
number cutoffs so that it could apply available
business census employment numbers.
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Commercial and Public Buildings:
Small Project .........................................................................................
Medium Project .....................................................................................
Large Project .........................................................................................
Warehouses:
Small Project .........................................................................................
Medium Project .....................................................................................
Large Project .........................................................................................
Health Facilities and Laboratories:
Small Project .........................................................................................
Medium Project .....................................................................................
Large Project .........................................................................................
Detention Facilities:
New Construction ..................................................................................
Athletic and Entertainment Facilities:
All Projects ............................................................................................
Airline Terminals:
New Construction ..................................................................................
Aircraft Service:
All Projects ............................................................................................
Auto, Bus, and Truck Service:
Small Renovation ..................................................................................
Major Renovation ..................................................................................
New Construction ..................................................................................
Residential Housing:
Small Project .........................................................................................
Medium Project .....................................................................................
Large Project .........................................................................................
Apartments, Hotels, and Dormitories:
All Projects ............................................................................................
Streets and Highways:
Repair Storm Drain/Sewer Local Street ...............................................
Install New Storm Drain/Sewer System ...............................................
Lane Expansion on Major Interstate .....................................................
Bridges:
Small Project .........................................................................................
Medium Project .....................................................................................
Large Project .........................................................................................
Dams and Reservoirs:
Small Project .........................................................................................
Medium Project .....................................................................................
Large Project .........................................................................................
Storm Sewers and Flood Control:
Small Project .........................................................................................
Medium Project .....................................................................................
Large Project .........................................................................................
Sewer, Water, and Waste Treatment Plants:
Small Renovation ..................................................................................
Major Renovation ..................................................................................
New Construction ..................................................................................
Tanks:
Minor Installation/Renovation (Small Contractor) .................................
Minor Installation/Renovation (Medium Contractor) .............................
New Construction/Major Renovation (Large Contractor) .....................
Hydro-Electric Power Plants:
Small Project .........................................................................................
Medium Project .....................................................................................
Large Project .........................................................................................
Other Power Plants:
Small Project .........................................................................................
Medium Project .....................................................................................
Large Project .........................................................................................
Electric Substations:
Small Project .........................................................................................
Medium Project .....................................................................................
Large Project .........................................................................................
Project category
Total
number of
projects
with
confined
spaces
3,483
3,246
724
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117
442
129
2,609
4,409
462
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59
30
69
163
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801
882
10
20
87
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8,325
3,568
952
1,006
404
1,784
2,914
1,784
4,258
E:\FR\FM\04MYR2.SGM
2,489
350
59
578
708
1,179
2,489
350
59
208
468
48
216
176
118
1
8
1
0
95
87
31
102
12
2,310
1,012
1,179
10
164
24
952
2,011
808
426
1,004,721
3,204
2,204
2
12
87
295
147
2,332
4,419
643
130
220
23
13,931
4,328
852
Total
number of
projects
540
294
147
7
10
1
49
119
92
34
107
13
3
0
0
0
0
0
0
0
1
1
1
5
4
4
2
0
0
2
5
5
04MYR2
2
4
4
0
11
7
5
6
18
0
0
0
4
0
0
21
0
0
1
2
0
0
0
0
4
10
15
Existing
5
7
13
12
1
2
10
2
8
18
5
14
6
14
0
4
4
0
2
2
2
10
10
1
3
3
0
0
0
0
0
0
6
9
11
20
34
58
2
59
193
1
0
3
46
96
196
New
All
3
7
7
0
11
7
5
6
18
6
9
11
24
34
58
23
59
193
1
2
3
46
96
196
9
17
28
15
1
2
10
2
8
18
5
15
7
15
5
8
8
2
2
2
4
15
15
Average number of confined spaces
per project
92
712
86
0
1,047
612
5
48
16
1,296
1,588
1,294
13,860
24,086
68,382
57,247
20,650
11,387
10
328
72
43,792
96,528
79,184
16,056
49,534
49,952
6,387
25,118
1,602
8,816
4
96
1,566
148
797
482
2,201
583
3,535
1,029
261
441
46
13,931
48,690
10,863
Total
number of
confined
spaces
2
2
2
0
5
18
1
2
3
1
1
4
1
1
2
1
1
1
2
4
17
3
3
3
2
2
2
2
1
2
2
1
1
1
2
2
2
2
2
2
2
2
2
2
2
2
2
Average
number of
workers in
an entry
team
22
138
138
0
252
604
84
48
433
9
139
389
69
94
163
26
437
446
2
40
810
442
742
1,342
17
321
721
44
3
6
150
2
16
46
36
43
24
43
29
13
13
12
4
4
8
57
57
Number of
entries into
confined
spaces per
project
673
14,028
1,704
0
23,990
52,790
88
384
390
1,944
24,520
45,746
39,848
66,590
192,177
64,714
152,950
26,314
21
6,552
19,440
420,784
746,081
542,168
30,327
935,314
1,286,264
18,735
612
4,806
132,240
4
192
4,002
1,062
2,283
1,654
6,308
3,381
5,745
1,672
1,565
882
92
27,862
185,022
41,279
Total
entries into
confined
spaces, all
projects
44
276
276
0
1,304
3,590
164
96
1,012
9
163
1,421
88
126
229
26
460
478
4
160
15,300
1,324
2,524
4,924
29
544
1,463
74
3
10
280
2
22
77
72
90
46
90
77
22
22
18
7
7
16
134
134
Number of
worker
entries into
confined
spaces per
project
1,346
28,055
3,409
0
124,141
313,766
172
768
911
1,944
28,753
167,110
50,820
89,258
269,991
64,714
161,000
28,202
42
26,208
367,200
1,260,448
2,537,882
1,989,296
51,735
1,585,080
2,609,992
31,509
612
8,010
246,848
4
264
6,699
2,124
4,779
3,169
13,203
8,978
9,722
2,829
2,348
1,543
162
55,724
434,964
97,043
Total
worker
entries into
confined
spaces, all
projects
176
1,104
1,104
0
4,035
15,880
656
384
4,048
5
340
5,364
280
395
743
80
598
666
32
640
46,800
1,988
2,388
3,188
113
2,764
6,765
140
3
14
913
3
92
362
19
87
66
87
294
65
65
72
25
25
32
605
605
Number of
workerhours in
confined
spaces per
project
5,386
112,222
13,634
0
384,132
1,387,912
689
3,072
3,643
1,116
59,888
630,748
161,411
279,641
875,408
198,290
209,300
39,294
333
104,832
1,123,200
1,892,576
2,401,134
1,287,952
202,181
8,053,119
12,068,165
59,612
612
11,214
805,195
6
1,104
31,494
551
4,620
4,547
12,763
34,310
28,724
8,359
9,392
5,511
578
111,448
1,962,207
437,779
Total worker
hours all
projects a
TABLE IV–2—SUMMARY STATISTICS ON MODELED WORKER ENTRIES INTO CONFINED SPACES, BY TYPE OF CONSTRUCTION ACTIVITY AND PROJECT SIZE
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3
3
7
37
1
1
0
107
4
4
8
Total
number of
projects
with
confined
spaces
37
1
1
1,204
1,067
Existing
0
0
0
0
0
0
0
8
New
0
2
15
27
44
2
8
28
All
0
2
15
27
44
2
8
36
Average number of confined spaces
per project
in this column rounded to the nearest whole hour.
n/a = not applicable (no confined spaces in this category).
Source: U.S. Department of Labor, OSHA, Directorate of Standards and Guidance, Office of Regulatory Analysis-Safety.
a Data
Natural Gas Plants:
Small Upgrade ......................................................................................
Major Renovation ..................................................................................
New Construction ..................................................................................
Space Facilities:
Small Project .........................................................................................
Medium Project .....................................................................................
Large Project .........................................................................................
Manufacturing Facilities:
Major Renovation ..................................................................................
New Construction ..................................................................................
Project category
Total
number of
projects
0
213
555
27
44
7
27
265
Total
number of
confined
spaces
0
11
1
1
1
1
12
12
Average
number of
workers in
an entry
team
0
51
43
78
126
2
64
728
Number of
entries into
confined
spaces per
project
n/a
5,442
1,591
78
126
7
218
5,358
Total
entries into
confined
spaces, all
projects
0
1,001
54
95
152
2
768
8,728
Number of
worker
entries into
confined
spaces per
project
n/a
106,807
1,998
95
152
7
2,611
64,238
Total
worker
entries into
confined
spaces, all
projects
0
24,000
196
342
572
4
4,608
24,135
Number of
workerhours in
confined
spaces per
project
n/a
2,560,818
7,252
342
572
13
15,667
177,631
Total worker
hours all
projects a
TABLE IV–2—SUMMARY STATISTICS ON MODELED WORKER ENTRIES INTO CONFINED SPACES, BY TYPE OF CONSTRUCTION ACTIVITY AND PROJECT SIZE—
Continued
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TABLE IV–3—PROFILE OF INDUSTRIES AFFECTED BY THE FINAL STANDARD ON CONFINED SPACES IN CONSTRUCTION
Total number
of firms in
industry
NAICS
Industry
221310 .........
236115 .........
Water Supply and Irrigation Systems ........
New Single-Family Housing Construction
(except Operative Builders).
New Multifamily Housing Construction (except Operative Builders).
Residential Remodelers ............................
Industrial Building Construction .................
Commercial and Institutional Building
Construction.
Water and Sewer Line and Related Structures Construction.
Power and Communication Line and Related Structures Construction.
Highway, Street, and Bridge Construction
Other Heavy and Civil Engineering Construction.
Other Foundation, Structure, and Building
Exterior Contractors.
Electrical Contractors and Other Wiring Installation Contractors.
Plumbing, Heating, and Air-Conditioning
Contractors.
Drywall and Insulation Contractors ...........
Site Preparation Contractors .....................
Total ....................................................
236116 .........
236118 .........
236210 .........
236220 .........
237110 .........
237130 .........
237310 .........
237990 .........
238190 .........
238210 .........
238220 .........
238310 .........
238910 .........
Total
number of
establishments
in industry
Total
employment
in industry
Estimated
annual
number of
projects with
confined
spaces
Estimated
number of
establishments
affected
annually
3,579
61,262
4,068
61,613
33,017
282,851
66
1,340
65
1,321
4,319
4,373
46,634
1,482
883
99,592
3,858
41,282
99,791
3,963
42,369
355,134
96,918
670,043
13,542
107
9,021
9,602
106
6,408
13,679
13,872
206,899
3,980
2,765
5,099
5,750
196,223
341
341
10,953
5,200
11,746
5,392
323,289
91,545
8,843
1,598
4,275
965
5,701
5,720
45,035
2,680
1,182
79,011
80,172
825,169
2,680
2,680
99,374
100,806
1,012,541
2,935
2,934
21,785
41,251
22,458
41,517
320,238
331,237
2,680
255
2,284
255
495,945
503,610
4,836,773
51,551
36,066
Revenues
($ thousand)
Average
revenues
per firm
($ thousand)
Profit rate
(percent)
Estimated
profits
($ thousand)
Average profit
per firm
($ thousand)
NAICS
Industry
221310 .........
236115 .........
Water Supply and Irrigation Systems ........
New Single-Family Housing Construction
(except Operative Builders).
New Multifamily Housing Construction (except Operative Builders).
Residential Remodelers ............................
Industrial Building Construction .................
Commercial and Institutional Building
Construction.
Water and Sewer Line and Related Structures Construction.
Power and Communication Line and Related Structures Construction.
Highway, Street, and Bridge Construction
Other Heavy and Civil Engineering Construction.
Other Foundation, Structure, and Building
Exterior Contractors.
Electrical Contractors and Other Wiring Installation Contractors.
Plumbing, Heating, and Air-Conditioning
Contractors.
Drywall and Insulation Projects .................
Site Preparation Contractors .....................
$7,999,900
103,600,723
$2,235
1,691
5.89
4.53
$471,431
4,692,648
$132
77
24,939,736
5,774
4.53
1,129,658
262
75,344,805
26,486,027
392,958,284
757
6,865
9,519
4.53
4.53
4.53
3,412,781
1,199,698
17,799,246
34
311
431
51,808,802
3,787
5.98
3,099,719
227
35,528,777
6,968
5.98
2,125,685
417
112,052,152
24,090,901
10,230
4,633
5.98
5.98
6,704,076
1,441,358
612
277
7,085,701
1,243
4.58
324,258
57
129,184,454
1,635
4.54
5,864,637
74
167,754,151
1,688
3.86
6,470,472
65
42,281,365
67,939,838
1,941
1,647
4.58
4.77
1,934,891
3,243,144
89
79
Total ....................................................
1,269,055,615
2,559
4.72
59,913,701
121
236116 .........
236118 .........
236210 .........
236220 .........
237110 .........
237130 .........
237310 .........
237990 .........
238190 .........
238210 .........
238220 .........
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238310 .........
238910 .........
Source: U.S. Department of Labor, OSHA, Directorate of Standards and Guidance, Office of Regulatory Analysis-Safety.
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TABLE IV–4—PROFILE OF SBA-DEFINED SMALL ENTITIES WITHIN INDUSTRIES AFFECTED BY THE FINAL STANDARD ON
CONFINED SPACES IN CONSTRUCTION
Estimated
annual
number of
projects with
confined
spaces
Total
number of
establishments
in industry-size
grouping
Total
employment
in industry-size
grouping
3,579
61,065
4,068
61,125
33,017
241,095
66
953
18
953
4,208
4,218
31,694
828
728
99,571
3,687
40,279
99,657
3,699
40,424
347,579
33,998
415,362
12,848
24
4,463
9,468
24
4,463
13,348
13,379
140,854
2,272
2,272
5,012
5,121
84,488
112
112
10,205
5,001
10,255
5,011
134,875
45,364
2,784
584
2,784
584
5,638
5,650
35,003
1,763
1,112
77,933
78,115
558,977
1,446
1,446
Total number
of firms in
industry-size
grouping
Estimated
number of
establishments
affected
annually
NAICS
Industry
221310 .........
236115 .........
Water Supply and Irrigation Systems ........
New Single-Family Housing Construction
(except Operative Builders).
New Multifamily Housing Construction (except Operative Builders).
Residential Remodelers ............................
Industrial Building Construction .................
Commercial and Institutional Building
Construction.
Water and Sewer Line and Related Structures Construction.
Power and Communication Line and Related Structures Construction.
Highway, Street, and Bridge Construction
Other Heavy and Civil Engineering Construction.
Other Foundation, Structure, and Building
Exterior Contractors.
Electrical Contractors and Other Wiring Installation Contractors.
Plumbing, Heating, and Air-Conditioning
Contractors.
Drywall and Insulation Projects .................
Site Preparation Contractors .....................
98,267
98,468
727,726
1,722
1,722
21,264
40,840
21,304
40,900
176,689
257,517
1,130
169
1,130
169
Total ....................................................
489,841
496,340
3,247,574
31,116
26,985
Revenues
($ Thousand)
Average
revenues per
firm
($ Thousand)
Estimated
profits
($ Thousand)
Average profit
per firm
($ Thousand)
$2,510,882
76,651,638
$713
1,255
5.89
4.53
$147,965
3,471,975
$ 42
57
15,147,671
3,600
4.53
686,122
163
73,283,645
10,421,351
199,388,653
736
2,827
4,950
4.53
4.53
4.53
3,319,420
472,040
9,031,411
33
128
224
32,860,609
2,462
5.98
1,966,049
147
15,098,169
3,012
5.98
903,323
180
43,921,533
10,427,684
4,304
2,085
5.98
5.98
2,627,824
623,888
258
125
5,277,635
936
4.58
241,517
43
80,826,690
1,037
4.54
3,669,320
47
111,089,247
1,130
3.86
4,284,841
44
23,969,602
49,943,011
1,127
1,223
4.58
4.77
1,096,903
2,384,056
52
58
750,818,022
1,533
4.74
35,447,057
72
236116 .........
236118 .........
236210 .........
236220 .........
237110 .........
237130 .........
237310 .........
237990 .........
238190 .........
238210 .........
238220 .........
238310 .........
238910 .........
NAICS
Industry
221310 .........
236115 .........
Water Supply and Irrigation Systems ........
New Single-Family Housing Construction
(except Operative Builders).
New Multifamily Housing Construction (except Operative Builders).
Residential Remodelers ............................
Industrial Building Construction .................
Commercial and Institutional Building
Construction.
Water and Sewer Line and Related Structures Construction.
Power and Communication Line and Related Structures Construction.
Highway, Street, and Bridge Construction
Other Heavy and Civil Engineering Construction.
Other Foundation, Structure, and Building
Exterior Contractors.
Electrical Contractors and Other Wiring Installation Contractors.
Plumbing, Heating, and Air-Conditioning
Contractors.
Drywall and Insulation Contractors ...........
Site Preparation Contractors .....................
236116 .........
236118 .........
236210 .........
236220 .........
237110 .........
237130 .........
237310 .........
237990 .........
238190 .........
238210 .........
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238220 .........
238310 .........
238910 .........
Total ....................................................
Profit rate
(%)
Source: U.S. Department of Labor, OSHA, Directorate of Standards and Guidance, Office of Regulatory Analysis-Safety.
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TABLE IV–5—PROFILE OF VERY SMALL ENTITIES (FEWER THAN 20 EMPLOYEES) WITHIN INDUSTRIES AFFECTED BY THE
FINAL STANDARD ON CONFINED SPACES IN CONSTRUCTION
Total number
of firms in
industry-size
grouping
NAICS
Industry
221310 .........
236115 .........
Water Supply and Irrigation Systems ........
New Single-Family Housing Construction
(except Operative Builders).
New Multifamily Housing Construction (except Operative Builders).
Residential Remodelers ............................
Industrial Building Construction .................
Commercial and Institutional Building
Construction.
Water and Sewer Line and Related Structures Construction.
Power and Communication Line and Related Structures Construction.
Highway, Street, and Bridge Construction
Other Heavy and Civil Engineering Construction.
Other Foundation, Structure, and Building
Exterior Contractors.
Electrical Contractors and Other Wiring Installation Contractors.
Plumbing, Heating, and Air-Conditioning
Contractors.
Drywall and Insulation Projects .................
Site Preparation Contractors .....................
Total ....................................................
236116 .........
236118 .........
236210 .........
236220 .........
237110 .........
237130 .........
237310 .........
237990 .........
238190 .........
238210 .........
238220 .........
238310 .........
238910 .........
Total number
of establishments in
industry-size
grouping
Total
employment in
industry-size
grouping
Estimated
annual number
of projects
with confined
spaces
Estimated
number of establishments
affected
annually
3,413
59,376
3,428
59,385
12,676
185,153
11
580
11
580
3,760
3,761
15,035
271
271
97,291
3,225
33,977
97,294
3,227
33,992
258,012
16,136
174,975
7,105
8
1,329
7,105
8
1,329
11,242
11,242
57,685
642
642
3,973
3,976
21,403
17
17
8,011
4,321
8,014
4,323
42,634
18,871
601
166
601
166
5,244
5,244
19,607
706
706
71,144
71,156
297,375
544
544
89,245
89,255
388,409
655
655
18,832
37,690
18,837
37,691
77,284
139,196
336
64
336
64
450,744
450,825
1,724,451
13,035
13,032
Revenues
($ Thousand)
Average revenues per firm
($ Thousand)
Estimated
profits
($ Thousand)
Average profit
per firm
($ Thousand)
$1,814,859
58,016,827
$532
977
5.89
4.53
$106,949
2,627,902
$31
44
6,202,571
1,650
4.53
280,949
75
53,069,089
4,744,855
77,231,171
545
1,471
2,273
4.53
4.53
4.53
2,403,792
214,921
3,498,225
25
67
103
12,423,307
1,105
5.98
743,286
66
3,755,169
945
5.98
224,672
57
14,530,558
4,349,517
1,814
1,007
5.98
5.98
869,363
260,231
109
60
2,892,942
552
4.58
132,388
25
40,914,727
575
4.54
1,857,422
26
Profit rate
(percent)
NAICS
Industry
221310 .........
236115 .........
Water Supply and Irrigation Systems ........
New Single-Family Housing Construction
(except Operative Builders).
New Multifamily Housing Construction (except Operative Builders).
Residential Remodelers ............................
Industrial Building Construction .................
Commercial and Institutional Building
Construction.
Water and Sewer Line and Related Structures Construction.
Power and Communication Line and Related Structures Construction.
Highway, Street, and Bridge Construction
Other Heavy and Civil Engineering Construction.
Other Foundation, Structure, and Building
Exterior Contractors.
Electrical Contractors and Other Wiring Installation Contractors.
Plumbing, Heating, and Air-Conditioning
Contractors.
Drywall and Insulation Projects .................
Site Preparation Contractors .....................
55,526,805
622
3.86
2,141,733
24
11,280,100
25,679,366
599
681
4.58
4.77
516,203
1,225,818
27
33
Total ....................................................
372,431,864
826
4.72
17,582,974
39
236116 .........
236118 .........
236210 .........
236220 .........
237110 .........
237130 .........
237310 .........
237990 .........
238190 .........
238210 .........
238220 .........
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238310 .........
238910 .........
Source: U.S. Department of Labor, OSHA, Directorate of Standards and Guidance, Office of Regulatory Analysis-Safety.
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TABLE IV–6—ESTIMATED COMPLIANCE RATES FOR CONSTRUCTION PROJECTS AFFECTED BY OSHA’S FINAL STANDARD
FOR CONFINED SPACES IN CONSTRUCTION
[By project category]
Entrant
training (a)
(percent)
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Project category
Commercial and Public Buildings:
Small Project ..............................................
Medium Project ..........................................
Large Project ..............................................
Warehouses:
Small Project ..............................................
Medium Project ..........................................
Large Project ..............................................
Health Facilities and Laboratories:
Small Project ..............................................
Medium Project ..........................................
Large Project ..............................................
Detention Facilities:
New Construction .......................................
Athletic and Entertainment Facilities:
All Projects .................................................
Airline Terminals:
New Construction .......................................
Aircraft Service:
All Projects .................................................
Auto, Bus, and Truck Service:
Small Renovation .......................................
Major Renovation .......................................
New Construction .......................................
Residential Housing:
Small Project ..............................................
Medium Project ..........................................
Large Project ..............................................
Apartments, Hotels, and Dormitories:
All Projects .................................................
Streets and Highways:
Repair Storm Drain/Sewer-Local Street ....
Install New Storm Drain/Sewer System ....
Lane Expansion on Major Interstate ..........
Bridges:
Small Project ..............................................
Medium Project ..........................................
Large Project ..............................................
Dams and Reservoirs:
Small Project ..............................................
Medium Project ..........................................
Large Project ..............................................
Storm Sewers and Flood Control:
Small Project ..............................................
Medium Project ..........................................
Large Project ..............................................
Sewer, Water, and Waste Treatment Plants:
Small Renovation .......................................
Major Renovation .......................................
New Construction .......................................
Tanks:
Minor Installation/Renovation (Small Contractor) ....................................................
Minor Installation/Renovation (Medium
Contractor) ..............................................
New
Construction/Major
Renovation
(Large Contractor) ..................................
Hydroelectric Power Plants:
Small Project ..............................................
Medium Project ..........................................
Large Project ..............................................
Other Power Plants:
Medium Project ..........................................
Large Project ..............................................
Electric Substations:
Small Project ..............................................
Medium Project ..........................................
Large Project ..............................................
Natural Gas Plants:
Small Upgrade ...........................................
Major Renovation .......................................
New Construction .......................................
Space Facilities:
Small Project ..............................................
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Information
exchange
(percent)
Written
programs
(and formal
annual
review)
(percent)
Classify
spaces and
issue
permits
(percent)
65
83
86
75
75
80
50
70
80
83
93
97
62
62
62
50
50
50
50
50
50
58
58
58
65
65
65
100
Mechanical
ventilation
(percent)
Attendants
(percent)
83
86
93
86
90
93
83
86
93
N/A
79
86
69
69
69
65
86
86
48
48
48
100
100
100
N/A
N/A
N/A
25
25
25
58
58
58
58
58
58
58
58
58
100
100
100
N/A
N/A
N/A
20
0
45
N/A
93
65
86
33
75
20
47
37
47
N/A
N/A
100
20
0
45
N/A
93
65
86
34
75
20
48
N/A
48
N/A
N/A
38
38
100
20
20
80
10
10
80
65
65
65
N/A
N/A
N/A
31
31
100
N/A
N/A
N/A
72
72
N/A
38
45
65
0
5
30
0
0
10
31
45
72
45
58
83
83
83
83
93
93
93
N/A
N/A
N/A
38
75
20
51
41
51
N/A
N/A
82
89
93
80
85
90
75
85
90
96
96
96
96
98
99
94
96
96
97
98
99
97
98
99
82
82
82
0
0
5
5
80
5
100
100
100
N/A
N/A
N/A
100
100
100
100
100
100
100
100
100
52
72
88
50
50
95
60
70
100
72
84
100
68
76
N/A
52
60
100
100
100
100
100
N/A
N/A
63
93
93
50
80
80
50
80
80
100
100
100
N/A
N/A
N/A
56
100
100
N/A
N/A
N/A
N/A
N/A
N/A
63
63
63
50
50
50
30
30
30
93
93
93
N/A
N/A
N/A
63
63
63
N/A
N/A
N/A
85
85
85
60
45
40
85
64
71
67
71
71
60
60
93
71
78
82
78
85
80
80
96
82
85
89
85
64
82
89
90
95
95
95
100
100
96
100
100
100
N/A
N/A
71
78
86
86
100
100
N/A
N/A
N/A
70
96
95
95
80
95
85
100
N/A
N/A
78
96
78
100
74
96
96
96
96
95
95
95
95
95
95
96
96
96
N/A
N/A
N/A
96
96
96
96
96
96
96
96
96
55
70
93
40
60
90
40
50
90
93
100
100
100
100
N/A
78
93
93
55
N/A
100
55
N/A
100
93
90
90
100
N/A
93
N/A
N/A
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Lockout/
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(percent)
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TABLE IV–6—ESTIMATED COMPLIANCE RATES FOR CONSTRUCTION PROJECTS AFFECTED BY OSHA’S FINAL STANDARD
FOR CONFINED SPACES IN CONSTRUCTION—Continued
[By project category]
Entrant
training (a)
(percent)
Project category
Medium Project ..........................................
Large Project ..............................................
Manufacturing Facilities:
New Construction .......................................
Information
exchange
(percent)
Written
programs
(and formal
annual
review)
(percent)
Classify
spaces and
issue
permits
(percent)
93
93
90
90
90
90
100
100
N/A
N/A
93
93
N/A
N/A
N/A
N/A
43
50
50
86
N/A
65
43
43
Lockout/
tagout
(percent)
Mechanical
ventilation
(percent)
Attendants
(percent)
Rescue
capability
(percent)
(a) Current compliance rates for attendant training are nearly identical to the rates for entry training, but may be somewhat lower for some project categories based
on estimates provided by CONSAD’s 1995 industry expert panel. See CONSAD report (2005) for details.
N/A = Not Applicable (treated as ‘‘0%’’ in calculations).
Source: U.S. Department of Labor, OSHA, Directorate of Standards and Guidance, Office of Regulatory Analysis-Safety.
Independent researchers found that a
TABLE IV–7—LOADED HOURLY LABOR
RATES APPLIED IN OSHA’S COST similar system in general industry
ANALYSIS OF THE FINAL STANDARD significantly reduced confined-spaces
incidents (Seong and Mendeloff,
FOR CONFINED SPACES IN CON-
Assessing the Accuracy of OSHA’s
Projections of the benefits of New Safety
[2009 dollars]
Standards, 2004). The Seong and
Mendeloff paper estimates at least a fifty
Labor category
Wage rate
percent reduction in total deaths in two
BLS fatality categories: ‘‘inhalation in
Construction supervisor ........
$42.16
enclosed, restricted, or confined
Skilled worker .......................
29.60
spaces,’’ and ‘‘depletion of oxygen in
General construction emenclosed, restricted, or confined
ployee ................................
24.93
Clerical employee .................
22.53 spaces,’’ following the implementation
Unskilled worker ...................
22.67 of the general industry rule. These two
categories would include a number of
Source: Department of Labor, OSHA, Direc- kinds of events not covered by the
torate of Standards and Guidance, Office of general industry confined space
Regulatory Analysis-Safety, based on data
from Bureau of Labor Statistics 2009 Occupa- standard, such as inhalation of toxic
substances in a room (for example, there
tional Employment Statistics (OES) Survey.
are some fatalities every year from using
4. Benefits and Net Benefits
paint or paint strippers in ordinary
rooms not adequately ventilated for the
Introduction
purposes of heavy chemical use that
The final standard will improve the
nevertheless would not be confined
safety of workers who encounter
spaces). These kinds of events would be
confined spaces in construction.
included in the denominator of Seong
Confined spaces represent special safety and Mendeloff analysis but would not
problems because it can be difficult to
be affected by the general industry
exit them and it may be difficult to
confined space rule. The Seong and
provide aid if an incident occurs in a
Mendeloff analysis does not attempt to
confined space. There are also certain
determine if the incidents included in
types of hazards, such as low oxygen
its analysis occurred in a confined
levels, accumulations of dangerous
space, much less whether the confined
gases, and engulfment by water that are
spaces rule was being followed. OSHA
particularly likely to be found in
believes that most of the remaining
confined spaces. As a result, OSHA
confined space incidents in general
developed a programmatic approach to
industry are the result of failure to
assure the safety of workers who must
follow that standard. Compliance with
work in the vicinity of confined spaces.
the provisions of this standard will
This programmatic approach includes
reduce accidents, injuries, and fatalities
provisions for identifying confined
in confined spaces in construction. In
spaces and the hazards they may
particular, the number of injuries and
contain; removing the hazards if
fatalities from causes such as
possible; restricting entry through a
asphyxiation, lethal gas, chemical
permit system where employers cannot
burns, explosions, drowning, and failed
remove the hazard; providing
rescue attempts will decline.
appropriate testing and equipment
For the Preliminary Economic
when employees must enter a space;
Analysis (PEA), OSHA developed
providing for attendants; and arranging
estimates of the benefits associated with
for rescue services when emergencies
the proposed standard by estimating the
occur in a confined space.
numbers of fatalities and injuries likely
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prevented by full compliance, and then
applied monetary values to them. Table
IV–8 shows the Agency’s estimate of the
annualized monetary benefits associated
with the final standard. The remainder
of this section details OSHA’s
methodology for estimating those
benefits.
TABLE IV–8—ESTIMATED VALUE OF
ANNUALIZED BENEFITS *
Benefits
Number
Monetized value
Fatalities Avoided.
Injuries Avoided
5.2
$45.2 million. a
780
$48.4 million. b
Total .............
..............
$93.6 million.
* In 2009 dollars.
a Based on an estimated value of $8.7 million per fatality avoided.
b Based on an estimated value of $62,000
per injury avoided.
Estimation of Prevented Fatalities
In the analysis CONSAD Research
Corporation (CONSAD) submitted to
OSHA and which OSHA reviewed and
approved for use in the PEA, the
CONSAD researchers used OSHA’s
Integrated Management Information
System (IMIS) and the Bureau of Labor
Statistics (BLS) Census of Fatal
Occupational Injuries (CFOI) to develop
the estimated safety benefits or the
number of fatalities and injuries
potentially avoided as a result of this
standard. Using these sources, CONSAD
gathered data on the number of fatal and
non-fatal construction-related accidents
involving the entry of a confined space
by applying a search criterion relevant
to both confined spaces and
construction work. For data collected
from the IMIS database, CONSAD
searched for accident reports with
construction industry SIC codes of 15,
16, and 17, and then manually reviewed
those reports and the narratives of the
accidents for factors indicative of an
enclosed or confined space-related
injury. Such factors included specific
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types of environmental hazards, certain
events and human errors, as well as the
type and source of an injury (see Section
4.1.1 of the CONSAD Report for a
detailed list of the factors; Docket ID:
OSHA–2007–0026–0003). Outside of the
search criteria, CONSAD also reviewed
incident reports where the Agency cited
employers for violations of other OSHA
standards involving constructions
hazards similar to those hazards found
in confined spaces; however, OSHA
assured that the analysis excluded any
cases involving a confined-space entry
or cases largely involving work activity
covered by OSHA standards—subpart P,
subpart S, subpart V or any General
Industry standard.
For data collected from CFOI, BLS
provided CONSAD with a research data
file, procured under a confidentiality
agreement, which contained detailed
information about work-related fatalities
such as employee occupation, industry,
worker activity, the type and source of
the injury, the event, the location of the
accident, as well as a narrative
description as to how the injury
occurred. CONSAD used the BLS
Confined Space Fatality Study—1992
(BLS, 1992b) as a reference guide for
developing the screening criteria used to
identify fatal confined-space accidents
in the CFOI file since the BLS study also
used CFOI data and defined a confined
space similar to OSHA’s General
Industry confined-spaces standard.
Figure 4.1 of the CONSAD Report shows
a detailed list of the factors used to
screen the CFOI data file for confinedspace accidents. Like the data used from
the IMIS database, CONSAD manually
reviewed each CFOI record and
eliminated any accident that did not
involve a confined space or that
involved work activity covered by
another OSHA standard.
From the IMIS database, CONSAD
reviewed fatality and injury cases that
occurred during the period of April
1984 to October 2001, and identified a
total of 102 accidents related to
confined spaces in construction. These
accidents resulted in 84 fatalities and 88
injuries. The complete list of these
accidents, along with their narratives, is
available in Appendix C.1 of the
CONSAD Report. Since the CFOI
program did not begin collecting workrelated fatality data from all 50 states
and the District of Columbia until 1992,
any data prior to 1992 was incomplete
and, therefore, eliminated from further
analysis. As a result, CONSAD only
reviewed cases from the CFOI research
data file that occurred during the period
of 1992 to 2000, identifying a total of 21
accidents related to confined spaces in
construction that resulted in a total of
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24 fatalities. Due to the confidentiality
agreement made between CONSAD and
BLS, the details of these cases were not
made available for public viewing. In an
effort to be consistent with the datacollection process used with the CFOI
data, CONSAD limited its analysis of
the IMIS fatality and injury data to the
period of 1992 to 2000. Using this
constraint, the IMIS data yielded a total
of 44 accidents related to confined
spaces in construction that resulted in
34 fatalities and 39 injuries. Collectively
from these two data sources, CONSAD
was able to identify a total of 65
accidents related to confined spaces in
construction during the period of 1992
to 2000 in which 58 fatalities and 39
injuries occurred.34
For the PEA, OSHA used the 58
selected fatalities from the 9-year period
of 1992 to 2000 as a baseline to develop
an estimate of the number of fatalities
and injuries that this standard would
potentially prevent. At that time, OSHA
estimated that there was an average of
6.44 35 confined-spaces-in-construction
fatalities per year. In Section 4.3 of the
CONSAD Report, CONSAD, with the
assistance of its safety professional, did
a further analysis of the fatality data
used to estimate the safety benefits in
the PEA and developed a methodology
for determining the likelihood of
preventing an accident with full
compliance with the provisions of this
standard. Using the expertise of
CONSAD’s safety engineer, CONSAD
assigned each accident used in the
analysis a ranking of 1 to 4, with 1
meaning that it was highly unlikely that
the standard would prevent the victim’s
fatality or injury, and 4 meaning that is
was highly likely that the standard
would prevent the victim’s fatality or
injury. CONSAD then translated these
rankings into probabilities that the
standard would prevent each fatality or
injury, using percentages of 5 percent
for a ranking of 1, 35 percent for a
ranking of 2, 65 percent for a ranking of
3, and 95 percent for a ranking of 4.36
CONSAD subsequently aggregated the
data and drew the conclusion that full
compliance with the standard would
prevent, on average, 91 percent of the
fatalities and injuries.37 OSHA reviewed
and approved the CONSAD analysis and
applied this probability prevention rate
to the fatality estimate of 6.44 fatalities
per year, and estimated in the PEA that
full compliance with the provisions of
this standard would prevent an
estimated 5.9 (rounded to 6) confinedspaces-in-construction fatalities per
year.
One commenter, Associated General
Contractors of America (AGCA),
commissioned a report by Dr. N. Mike
Helvacian (ID–222) that made several
criticisms of the methodology for
estimating prevented fatalities and
injuries in the PEA. The report
characterized the approach to assigning
prevention probabilities to accidents as
‘‘a subjective assessment that cannot be
reproduced by other safety
professionals’’ (p. 57). Another
commenter stated that there was no
basis for the estimate that full
compliance with the final standard
would eliminate 90 percent of fatalities
and injuries (ID–100).
In light of such comments, as well as
other comments received on the
proposed rule and the PEA, OSHA
reevaluated the original fatalities used
to develop the benefits estimates and
revised its values accordingly, as shown
in Table IV–8. Based on the IMIS data,
the CONSAD analysis showed 44
accidents during the period of 1992 to
2000 (listed in Appendix C.1 of the
CONSAD Report, beginning at CONSAD
Accident Number 57 and ending with
CONSAD Accident Number 100), of
which 34 fatalities and 39 injuries were
reported.38 Of those 44 accidents, 27 of
them included fatalities listed, along
with their narratives, in Table IV–9
below.39
Due to a confidentiality agreement
made with the Bureau of Labor
Statistics, OSHA did not include details
34 While there is overlap between fatalities and
injuries reported in OSHA IMIS and BLS CFOI,
using information such as date, time, place, and
names of affected individuals and firms allowed the
contractor to find the unique incidents reported in
each database.
35 A commenter stated that ‘‘it is unknown and
not reported how OSHA has determined these
figures. Practically, it is unknown how there could
be a .44 fatality’’ (ID–0100). OSHA notes that the
estimated number of preventable fatalities can take
on decimal values since it is an average value.
36 CONSAD estimated a maximum effectiveness
in preventing fatalities of 95 percent because the
researchers believed that even a reasonable effort at
compliance would not result in perfect compliance.
OSHA believes that this percentage is very
conservative as the standard has multiple layers of
protection that assure that even fail to comply with
some requirements, there are further protections to
preventing fatalities and for reducing fatalities to
injuries. The standard is unlikely to prevent any
fatalities only when the employer completely fails
to identify a space as a confined space and, thus,
fails to take any of the appropriate measures.
However, if there is a complete failure to identify
a confined space, the employer will incur no costs.
37 Thus, the vast majority of the accidents had a
rating of 4 and a 95 percent probability of
prevention.
38 Note that an accident could involve several
workers, with some injured and some killed.
39 Table IV–9 only provides the narratives of the
fatalities (with injuries omitted) shown in
Appendix C.1 of the CONSAD Report; the CONSAD
accident number listed for each accident in the
table refers to the location of the narrative for that
accident in the report.
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of the accidents gathered from the CFOI
database in the PEA or this FEA.
However, the CONSAD report provides
a detailed description of the
methodology used to collect
construction-related accidents involving
confined-space entries from the CFOI
database; OSHA made this description
available for public viewing and
commenting in the docket under Docket
ID: OSHA–2007–0026–003.
OSHA still believes that CONSAD’s
analysis of the number of accidents that
would be prevented by the standard
given full compliance is reasonable.
First, no existing standard provides a
comprehensive approach to confined
spaces in construction. There is an
existing construction standard requiring
employers to train employees in
confined-space hazards. However, this
existing standard does not specify what
constitutes a confined space, nor does it
specify the contents of the training that
would serve to prevent fatalities or
injuries due to confined-space hazards.
There are also rules governing specific
hazards, such as immediately dangerous
to life and health (IDLH) atmospheres
and hazardous gases, but OSHA did not
adapt these rules to the specific
circumstances of confined spaces;
therefore, these rules are unlikely to
provide adequate protection to workers
when they encounter the hazards within
a confined space. As demonstrated by
the number of fatalities and injuries
between 1992 and 2000, and confirmed
by the supplemental data indicating that
the fatalities and injuries continued to
mount in more recent years, the existing
rules have not been effective in
preventing confined-space fatalities in
construction. OSHA shares the belief of
the ACCSH, as well as the other
industry representatives who
recommended that OSHA conduct this
rulemaking, that a rule specific to
confined spaces in construction could
prevent these fatalities in a way that
existing rules do not.
Table IV–9 shows fatalities occurring
as a result largely of atmospheric
hazards—either insufficient oxygen or
the presence of lethal gases, particularly
carbon monoxide or hydrogen sulfide—
all of which this standard would
prevent. This standard also could
prevent fatalities that resulted from
construction-related explosions or fires.
In addition, a number of the fatalities
were the result of would-be rescuers
entering a confined space to assist
another employee and succumbing to
the same hazard, a result this standard
would prevent.
Perfect compliance with the final
standard would prevent all of these
fatalities in several ways. First,
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identification of confined spaces would
trigger the need for analysis and testing
for possible hazards, as well as
restrictions to prevent unauthorized
entry. To the extent employers find
hazards but cannot remove them, a
system of controls would go into place.
This system would prevent casual entry
into confined spaces, such as occurred
in CONSAD accident number 76 and
entry by an employee working alone as
occurred in the accidents with CONSAD
accident numbers 72 and 84.40 When
entry was necessary, there would need
to be appropriate and continuous
testing, and employers would have to
install ventilation to remove the
atmospheric, or explosion and fire,
hazards, or provide appropriate PPE.
Better data sharing also may prevent
some accidents, such as accident
number 92. These factors would prevent
most fatalities resulting from to
atmospheric or explosion hazards.
To the extent these measures failed,
the final standard also includes
provisions for rescue, and prohibitions
against unauthorized rescue entries.
Rescue provisions may not prevent all
fatalities that result from hazards such
as explosions, but they can be crucial
when atmospheric hazards are present.
Adequate rescue might prevent fatalities
that do not result in instant death. For
example, quick withdrawal of workers
from an explosive atmosphere or
workers suffering from asphyxiation
(followed by adequate first-aid
measures) could prevent many fatalities.
The rescue provisions would also
prevent fatalities due to entry of
inadequately equipped rescuers, either
by removing the need for entry
(providing non-entry rescue capability)
or by assuring that the rescuers have
adequate equipment for entry. Such
rescue-related fatalities occurred in
accidents 72, 84, and 97, and nearly
occurred in several other accidents such
as accident number 92.
In addition to atmospheric hazards,
Table IV–9 shows a few other types of
hazards. These include drowning and
physical hazards such as dislodged
plugs. The provisions for upstreamwarning systems might prevent some of
these drownings. Several of the
accidents involved physical hazards
posed by pipe plugs (or exposure to the
physical hazards only temporarily
restrained by the pipe plug); the
requirements in the final standard to
remove or isolate physical hazards
through physical barriers or other
means, rather than temporarily
controlling the physical hazards, would
40 Hereafter, this discussion will refer to all
incidents by their CONSAD accident numbers.
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eliminate employee exposure to such
hazards during a confined-space entry
and prevent some of these drownings.
For example, having water bypass an
area, rather than relying on a plug to
hold the water, would prevent some of
these accidents. The ability to quickly
remove an injured employee with a
retrieval line would also prevent a fatal
accident in some cases. In many cases,
better hazard awareness, compliance
with permit-program requirements that
prohibit entry when hazards are present,
and the use of retrieval lines and other
rescue procedures would make a
difference.
Based on this review, OSHA believes
that CONSAD’s estimate that the
standard would prevent 91 percent of
the confined-space fatalities in their
database seems reasonable. In almost all
cases, multiple provisions would, if
fully followed, completely prevent the
fatalities. However, this estimate is in
some senses a maximum estimate of the
effectiveness of the standard. The
estimate assumes full compliance, and
OSHA’s experience in general industry
shows that perfect compliance with a
similar standard was not achieved.41 It
is also possible, though none of the
accidents examined illustrate this
phenomenon, that an employer might
have confined space incident even
when in compliance with the standard
due to an unanticipated equipment
failure (such as an air hose developing
leaks) or gross human error (such as an
attendant falling asleep). However, not a
single incident OSHA has examined
occurred in a situation in which an
employer was in compliance with the
provisions of the standard.
In this Final Economic Analysis
(FEA), OSHA revised its estimates with
the same methodology used in the PEA,
but also added supplementary data (i.e.,
Table IV–10, described later in this
section) whereby the Agency used new
data to address a commenter’s point and
to confirm the continuing validity of the
original data.
Several commenters questioned
generally whether OSHA properly
included the accidents used to estimate
benefits in the PEA, but did not point
41 Seong and Mendeloff (2004) have found that
past OSHA safety regulations’ effectiveness at
reducing occupational hazard-related mortality has
been substantially lower than estimated by OSHA.
It should be noted that (1) OSHA is forecasting
effectiveness with full compliance and Seong and
Mendeloff measured effectiveness given actual
compliance, and (2) OSHA uses a fundamentally
different approach to estimating benefits to this
(and most other) safety standards than was used in
the analyses the Seong and Mendeloff study
reviewed. Nevertheless, this study potentially
provides empirical support for the characterization
of 91 percent as an upper bound in terms of the
benefits that will actually be realized.
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to any specific accidents that they
would remove from the list of IMIS
fatalities provided in the public record
for this rulemaking. One of these
commenters, the Associated General
Contractors of Texas—Highway, Heavy,
Utilities and Industrial Branch (AGCT),
stated that OSHA did not specify the
industry sectors in which the fatalities
and injuries occurred (ID–0124).
AGCT also asserted that ‘‘most
potential exposures to confined space
hazards in the construction industry
occur in connection with excavation
operations,’’ and that other standards
adequately address these hazards (ID–
124). Another commenter stated that the
PEA included accidents in trenches,
while the proposed standard excluded
trenching work (ID–035). In response,
OSHA notes that the proposed standard
did not apply to non-sewer construction
work regulated by 29 CFR part 1926,
subpart P—Excavations. However, the
proposed standard applied to sewer
work that fell under subpart P and,
therefore, the inclusion of some
accidents in trenches was consistent
with the scope of the proposed rule.
Final § 1926.1201(b) eliminates the
distinction between non-sewer
construction work and other
construction work; the final standard
clearly states that it does not apply to
work regulated by 29 CFR part 1926,
subpart P. As a result, the FEA does not
include the costs and benefits associated
with accidents occurring in trenchrelated activities unless they also
involve confined spaces other than the
trench (e.g., a pipe placed inside the
trench).
In addition, AGCT asserted, without
support, ‘‘Most sewer related fatalities
involve municipal workers who are not
covered by OSHA standards’’ and
expressed concern that it would be
unfair and improper for OSHA to
include benefits to municipal workers
not covered by OSHA standards (ID–
124). AGCT did not, however, point to
any examples in the IMIS fatality data
on the record that involved municipal
workers. OSHA reexamined the 1992–
2000 IMIS data and did not find any
indication that these examples involved
fatalities of municipal workers.
Moreover, while AGCT’s assertion may
hold true with respect to the normal
maintenance activities in sewers
typically performed by municipal
workers, AGCT did not distinguish in
its comments between municipalworker fatalities resulting from sewer
work performed as part of construction
and normal maintenance activities. To
the contrary, it is OSHA’s
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understanding that private contractors
perform most sewer-construction
activities.
Another commenter, Edison Electric
Institute, stated that the analysis did not
explain the basis for determining how
the included accidents involved
construction work, and that the analysis
should exclude ‘‘public sector’’ work
(ID–210, Tr. pp. 98–100). OSHA limited
the accidents that served as the basis of
the benefits analysis in the PEA to
construction work based on the industry
code of the employer of the worker
involved in the accident. The final
standard covers employers subject to
OSHA enforcement authority and
engaged in construction activity not
covered by 29 CFR part 1926, subparts
Y—Commercial Driving Operations,
P—Excavations, or S—Underground
Construction, Caissons, Cofferdams, and
Compressed Air, so the final standard
covers ‘‘public sector’’ work only to the
extent that such work is within OSHA’s
enforcement authority. To the extent
that ‘‘public sector’’ work means work
conducted by municipal employees,
OSHA refers to its response in the
previous paragraph.
In response to these criticisms, OSHA
reviewed the fatalities in the CONSAD
IMIS database with respect to the issue
of whether a construction standard
would cover those accidents. First, the
standard would cover municipal
workers in state-plan states. However,
there is not a single instance in Table
IV–9 that identifies a municipal worker
as a fatality. As CONSAD reported, all
fatalities were for firms in a
construction SIC code, and not for firms
in a local government SIC code. Some
commenters may believe, incorrectly,
that contracted construction work
funded by a municipality in a non-state
plan state is not subject to OSHA
standards; if the work involves an
employee of a private-sector employer,
that employer is subject to OSHA
standards regardless of whether or not a
local government funds the work.
OSHA then examined whether the
general industry standard or any other
OSHA standards covered the fatalities.
It is difficult to determine coverage from
the IMIS descriptions alone, so OSHA
examined what standards it cited at the
time of the fatality investigation. Even
this approach may be unreliable because
there may be a citation for a violation
associated with a fatality inspection that
did not involve a violation that directly
contributed to the fatality. OSHA found
that only two fatality accidents (89 and
99) had any citations under general
industry standards. Absent a clear
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indication of a causal link between the
general industry work cited and the
fatality, OSHA is reluctant to remove
these accidents. Moreover, even if these
fatalities were the result of general
industry activity, OSHA believes that it
should include these two fatalities as
prevented by the construction standard
because it is possible that the employer
believed the activities constituted
construction work and, therefore, not
covered by the general industry
standard. With the promulgation of this
final rule, it will now be clear that all
confined spaces are subject to an OSHA
standard, and that similar precautions
apply to these spaces.
With respect to excavations, OSHA
found only three accidents in which it
cited the excavation standard (66, 80,
and 86). However, OSHA believes that
in all three cases, the fatality occurred
in a confined space. The accident
investigator identified the worksite in
Accident 66 as a confined space.
Accident 80 describes an entry into a
manhole, which normally means a
confined space. Accident 86 describes
the activities as ‘‘finish up work,’’
implying the excavation phase of the
project was complete when the accident
occurred.
Several of the accidents involved
underground activities, so OSHA
examined the accidents for citations to
subpart S, OSHA’s underground
construction standards. OSHA did not
find any such citations and, therefore,
did not exclude any accidents on that
basis.
As a result of the decision, discussed
in the cost analysis in this FEA, to
exclude costs in state-plan states that
adopted some provisions of a confinedspaces standard for construction, OSHA
examined whether any of the fatalities
involved citations to a state confinedspaces-in-construction standard. OSHA
found two such cases—Accidents 67
and 82. Accident 67 occurred in Alaska,
which has a comprehensive confinedspace-in-construction standard that
included almost all of the provisions in
this final confined-space standard.
OSHA decided not to include this
fatality in the list of fatalities that this
standard would prevent given full
compliance with the rule. Accident 82,
however, occurred in a state that
required only mechanical ventilation of
confined spaces, and no other
provisions of this OSHA standard.
OSHA believes that a full confinedspace program compliant with this
standard would prevent this accident,
while a simple ventilation requirement
would not.
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TABLE IV–9—CONFINED SPACES IN THE CONSTRUCTION INDUSTRY
FATAL ACCIDENTS AND INJURIES—1992–2000
[As listed in the Consad report]
Consad accident No.
Year
57 ...............................
Industry SIC
code
1992
Number of
reported
fatalities
Type of confined space
1623
sewer/pipe/manhole .....................................................
Inspection/
activity No.
1
109472456
Description of Accident:
At approximately 11:30 a.m. on April 16, 1992, Employee #1 entered a 15 ft. 9 in. deep manhole that was part of a new sewer line installation
project in order to plug two sewer lines with wing nut plugs. Employee #2 and a third employee were at the top of the manhole watching as Employee #1 entered the hole and inserted one plug near the top, then proceeded down the ladder to the bottom to install the second plug, which
took approximately 4 minutes to install. Employee #1 then stated he was hot, started up the ladder, and fell unconscious to the floor. Employee
#2 entered the manhole and attempted to sit Employee #1 upright. Employee #2 then began feeling faint and started up the ladder to exit. A little more than halfway up he passed out and was left hanging from the ladder. The third employee then ran for help. A superintendent tied a
rope around himself, held his breath, and rescued Employee #2, who was transported to the hospital, where, after undergoing a blood gas test,
he was treated for carbon monoxide exposure. Employee # 1 died from acute carbon monoxide poisoning before he was retrieved from the
manhole. The company had no confined space entry procedure in place for this particular job site because they did not consider new manholes
to reasonably pose a risk to workers. No measuring equipment was used to detect toxic or combustible gases and oxygen levels. No mechanical ventilation was used. No rescue equipment was available.
61 ...............................
1992
1799
Other ............................................................................
1
115562290
Description of Accident:
At approximately 7:45 a.m. on October 27, 1992, Employee #1 was preparing to fiberglass the interior surface of a swimming pool that measured 30 ft long and 16 ft wide with a depth of 4 ft at the shallow end and 9 ft at the deep end. Overnight, a water faucet adjacent to the pool
had leaked water into the pool. Employee #1 was removing the standing water in the bowl of the deep end. Initially, he used a sponge and
bucket to remove the water. Later, he used about 2 gal of acetone to help accelerate evaporation of the remaining water. He then used a nonexplosion-proof shop vacuum to vacuum the remaining water-acetone mixture. Switching on the vacuum created a spark that ignited the acetone vapor in the bowl of the pool. The resulting explosion and fire caused second- and third-degree burns on 70 percent of his body. Employee
#1 was hospitalized until November 12, 1992, when he died of complications.
64 ...............................
1993
1623
sewer/pipe/manhole .....................................................
1
114834930
Description of Accident:
On September 17, 1993, Employee #1, of Dan’s Excavating Inc., a laborer on a sewer construction crew, entered a 26 ft deep manhole to
check the line sight glass for water levels. After he had climbed to the bottom of the manhole, Employee #1 made a noise as if he were clearing
his throat and then started climbing back out. When Employee #1 was 6 to 8 ft from the top he looked up, let go of the ladder, and fell backward to the bottom of the manhole. Employee #1 died of asphyxia. The atmosphere had not been tested before he entered the manhole. When
it was later tested at the manhole level from which Employee #1 fell, an oxygen deficiency was found. Citations were issued for serious violations of R408.40121(1), R408.40121(2), and R408.41115(8).
65 ...............................
1994
1771
sewer/pipe/manhole .....................................................
1
124771049
Description of Accident:
Employee #1 was applying grout in a manhole. There had been a 20 to 36 in. rubber plug installed into a 36 in. sewer line that entered the
manhole in which Employee #1 was working. For some unexplained reason, the rubber plug exploded, hitting Employee #1 and forcing him
down the downflow side of the sewer line. Employee #1 died at the scene of severe head injuries.
66 ...............................
1994
1629
Undetermined ..............................................................
1
107232167
Description of Accident:
Employee #1 entered a confined space with a lighted torch. The atmosphere was not tested and contained an explosive concentration of propane gas. The propane gas exploded, sending the employee approximately 20 feet in the air, and igniting his clothing. Employee #1 sustained
2nd- and 3rd-degree burns over 70 percent of his body. He died of respiratory arrest two days later. A propane torch had been left on in the
space overnight and the flame had gone out, allowing propane to accumulate. Citations were issued.
67 ...............................
1994
1623
Undetermined ..............................................................
1
124078163
Description of Accident:
Employee #1 died of asphyxia when he was directed to enter a confined space without full compliance with confined space standards and associated procedures.
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68 ...............................
1994
1623
sewer/pipe/manhole .....................................................
1
109054866
Description of Accident:
Employees #1, #2, and #3 were in a dry well modifying sewer mains. Fluids left in the pipe for three months flowed into the work area. The fermenting fluids released hydrogen sulfide gas. Employees #1 and #2 were hospitalized. Employee #1 died of asphyxiation. Employee #2 is in a
long term health care facility in Westchester, NY. Employee #3 was treated and released.
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TABLE IV–9—CONFINED SPACES IN THE CONSTRUCTION INDUSTRY—Continued
FATAL ACCIDENTS AND INJURIES—1992–2000
[As listed in the Consad report]
Consad accident No.
Year
69 ...............................
Industry SIC
code
1994
Number of
reported
fatalities
Type of confined space
1794
sewer/pipe/manhole .....................................................
Inspection/
activity No.
1
110465739
Description of Accident:
At approximately 7:00 a.m. on November 21, 1994, Employee #1 and a coworker, laborers, began removing the rubber bladder plugs from a 48
inch storm sewer drain system to allow the construction site to drain off standing water captured by the blocked line. They climbed into the 10
foot deep manhole D–2, and placed two jointed pieces of 2 by 4s against the end of the metal portion on the rubber bladder plug and the manhole wall to prevent the plug from being swept downstream in the 48 inch storm sewer drain pipe. They then climbed out of manhole D–2. Air
pressure was released from the plug installed in the storm sewer drain pipe in manhole D–2 to allow the stored water to pass. Employee #1
told his coworker to release the air pressure from the plug in manhole mixing box D–3, located approximately 71 feet away and upstream adjacent to the flightline. When the coworker arrived at mixing box D–3, it was under water. The employees conversed and the coworker was told to
take the air release valve assembly out of the air vent hose to completely deflate the upstream plug. The employees knew this plug was secured by a rope attached to mixing box D–3. They stood around the opening to manhole D–2, and conversed when they noticed the 2 by 4
brace holding the rubber bladder plug in manhole D–2 in the inflow pipe was coming loose. Employee #1 entered manhole D–2 without an access ladder and attempted to shore up the brace by stomping it back into a horizontal position while standing on the lip of the outbound pipe.
He was washed down the storm drain and drowned.
70 ...............................
1995
1623
sewer/pipe/manhole .....................................................
1
116508169
Description of Accident:
Employee #1 was standing on a ladder while removing the rubber plug of an 8 inch sewer line in a manhole. He fell from the ladder into the
bottom of the manhole, which contained waste product. Employee #1 attempted to climb out, but fell backward into the manhole. Employee #1
drowned in the bio-residue that was at the bottom of the manhole.
72 ...............................
1995
1542
Pit .................................................................................
2
108724915
Description of Accident:
At approximately 7:45 a.m. on November 9, 1995, Employees #1 and #2 were dismantling a scaffold that was approximately 12 ft above an
open 45 ft by 60 ft excavation. Employee #1 allegedly fell into the pit on the west side. Employee #2 ran to the ladder on the east side of the pit
to help. He collapsed at the bottom of the pit by the ladder. Employees #3 and #4 also went into the pit by the east side ladder. Employee #3
collapsed behind the ladder on a dirt mound about 3 to 5 ft above the bottom of the pit. While descending the ladder, Employee #4 began to
feel lightheaded and weak in the knees, and was pulled out of the pit by two Reynolds employees. Two coworkers, who were fire brigade members, also responded to the emergency. One descended the ladder without SCBA and collapsed at the bottom of the pit on top of Employee #2.
The other coworker also started down the ladder without SCBA, began to feel lightheaded and weak in the knees, and was pulled out by Reynolds employees. Employees #1 through #3 died of asphyxia and Employee #4 was hospitalized for approximately one month. Argon gas had
been used instead of compressed air to operate a pump that removed water from the pit.
76 ...............................
1996
1623
sewer/pipe/manhole .....................................................
1
300602943
Description of Accident:
Employee #1 and a coworker were assigned to search for a missing plug in one of several manholes in an active sewer system. They opened
three manholes, climbed down 12 ft, and used a flashlight to look in the 15 in. pipes. Employee #1 then went into a fourth manhole, where he
was overcome by toxic gases. He died several hours later.
77 ...............................
1996
1629
sewer/pipe/manhole .....................................................
1
300947256
Description of Accident:
Employee #1, a laborer, and his foreman arrived at a manhole to open a mechanical valve at the bottom of the manhole. While Employee #1
was removing the manhole cover, the foreman was 5 ft away at his truck getting the air tester. When the foreman turned around to go back to
the manhole, he saw the top of Employee #1’s head disappear into it. The foreman then looked down into the manhole and saw that Employee
#1 was unconscious. The foreman tested the air in the manhole and obtained a reading of 14% oxygen. He immediately called 911, and Employee #1’s body was retrieved by the local fire department with the use of SCBAs. OSHA’s testing of the manhole showed oxygen levels of between 12 and 14 percent. Tests for carbon monoxide, hydrogen sulfide, and flammable vapors were negative. Tests for carbon dioxide were
positive, with a reading of 35,000 ppm.
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78 ...............................
1997
1711
Pit .................................................................................
1
116308453
Description of Accident:
Employee #1 was working at the bottom of a 10 ft deep pit when he passed out. A coworker who went down to rescue him started to feel sick,
so he emerged from the pit and called for help. He then reentered the pit with a second coworker, who passed out before Employee #1 could
be rescued. The first coworker was again able to escape. Emergency Services arrived and extricated Employee #1 and the second coworker
from the pit. Employee #1 died of asphyxia from inhalation of argon gas.
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TABLE IV–9—CONFINED SPACES IN THE CONSTRUCTION INDUSTRY—Continued
FATAL ACCIDENTS AND INJURIES—1992–2000
[As listed in the Consad report]
Consad accident No.
Year
79 ...............................
Industry SIC
code
1997
Number of
reported
fatalities
Type of confined space
1794
sewer/pipe/manhole .....................................................
Inspection/
activity No.
1
127317493
Description of Accident:
At approximately 11:00 a.m. on March 4, 1997, Employee #1 entered a recently constructed 8 ft deep by 4 ft diameter manhole to retrieve a
clod of dirt on the bottom. He was one his way out when he fell back in and lost consciousness. Employee #1 died of asphyxia. He apparently
was overcome by high levels of methane gas.
80 ...............................
1997
1623
sewer/pipe/manhole .....................................................
1
122227283
Description of Accident:
At approximately 4:30 p.m. on August 4, 1997, Employees #1 through #3 were working on a sewer system project in a residential area. Employee #1 descended into a 12 ft deep manhole to apply jointing compound and to remove some laser sighting equipment. After several minutes, Employees #2 and #3 noticed that Employee #1 had collapsed. They shouted to the foreman, who ran to the manhole, surveyed the situation, and immediately called 911 from his truck. Meanwhile, Employees #2 and #3 entered the manhole to rescue Employee #1. Employee #3
later stated that he did not notice any unusual odors, but that he and Employee #2 began to feel dizzy during their rescue efforts. They lifted
Employee #1 to coworkers at the surface, after which Employee #3 climbed out of the manhole and collapsed. Employee #2 tried to ascend the
ladder, but collapsed to the bottom of the manhole. Employees #2 and #3 were taken to separate hospitals and treated for carbon monoxide
exposure. Employee #1 was taken to the emergency room, where he was pronounced dead. The autopsy report listed the cause of death as
carbon monoxide inhalation. The employer had confined space entry procedures in place, but did not implement them. At the time of the accident, there was no rescue equipment near the manhole and testing was not done for toxic or combustible gases prior to the employees’ entry.
No mechanical ventilation was used for the manhole.
82 ...............................
1998
1794
sewer/pipe/manhole .....................................................
1
127298925
Description of Accident:
Employee #1 died of asphyxiation when he entered a sewer bore casing. Employee #1 entered the sewer bore casing when the casing struck a
rock and was unable to get out. A second employee also went into the casing but managed to get out.
83 ...............................
1998
1623
sewer/pipe/manhole .....................................................
1
301312757
Description of Accident:
A construction crew of four men was tying an old sewer line into the new sewer system. Employee #1 broke a plug within the new sewer line
and began to climb up the ladder toward the opening of the manhole. Gas rushed from behind the plug and overcame him, causing him to fall
back into the hole. The second employee saw Employee #1 fall back into the manhole. He quickly went down to rescue him. The second employee partially reached the bottom of the hole before he decided to come back up. The two remaining employees eventually went down into
the hole. The second employee managed to get out of the manhole and summon help. The Fire Department Rescue Team retrieved the third
and fourth employees before they became totally incapacitated. Employee #1 died of asphyxiation. The other three employees were sent to the
hospital for medical treatment.
84 ...............................
1998
1623
sewer/pipe/manhole .....................................................
2
110040383
Description of Accident:
Employees #1 and #2 were part of a construction crew building an extension sewer line that was to tap into an existing city line. The crew had
exposed one side of a manhole in the city sewer line and a subcontractor had core-drilled a hole in it for placement of the new line. Some concrete remained intact after the drilling was completed. Employee #1 was lowered into the manhole using a chain draped over a rock bar. He
was immediately overcome by the high levels of hydrogen sulfide. Employee #2 attempted to rescue him but was also overcome by the fumes.
Both workers were killed.
85 ...............................
1998
1623
sewer/pipe/manhole .....................................................
1
302098892
Description of Accident:
Employee #1 entered a 9 ft deep manhole to apply sealant to the connecting concrete rings. This was the last, and the deepest, of the six manholes he had entered. Shortly after reaching the bottom, Employee #1 was overcome by hydrogen sulfide gas that had collected in the manhole. He was killed.
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86 ...............................
1998
4911
sewer/pipe/manhole .....................................................
1
301768784
Description of Accident:
Some employees were installing a French drain system to collect water seeping from a slurry pond. The employees were entering the catch
basin to do the final touch-up work by riding the bucket of a backhoe down into the basin. One of the employees, a 57-year old supervisor, was
engulfed by vapors that were later found to be hydrogen sulfide. He died of inhalation of toxic fumes. Four other employees were hospitalized
for exposure to the hydrogen sulfide.
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TABLE IV–9—CONFINED SPACES IN THE CONSTRUCTION INDUSTRY—Continued
FATAL ACCIDENTS AND INJURIES—1992–2000
[As listed in the Consad report]
Consad accident No.
Year
89 ...............................
Industry SIC
code
1999
Number of
reported
fatalities
Type of confined space
7699
Tank .............................................................................
Inspection/
activity No.
1
302710413
Description of Accident:
An employee was painting the interior of a 15,000-gallon water storage tank with epoxy primer paint. An airless spray was being used for this
task. An organic vapor air purifying respirator was in use and three small exhaust fans were drawing from the 12-in. pipe openings in the tank.
The employee was found dead at the bottom of the section of the tank used for initial filling and settling. There was no confined space program
or procedure in place at the time of the incident and the employee was working alone without the knowledge of the supervisor(s). The medical
examiner’s report stated that death was caused by an overexposure to organic vapors consistent with those found in the paint formulation
(MiBK, Toluene, Xylene). The Atlantic City Fire Department Confined Space Rescue Team had measured approximately 3 of the LEL for these
vapors at the time they removed the deceased from the tank.
90 ...............................
1999
1799
Other ............................................................................
1
302558580
Description of Accident:
Employee #1 was spraying Sunflex, a waterproofing substance, inside the bottom half of a 7 ft by 5 ft by 9 ft concrete stoop while the coworker
went to their truck to get more insulating boards. When the coworker returned, he found Employee #1 collapsed at the bottom of the stoop. Employee #1 was rushed to the hospital, where he later died.
92 ...............................
1999
1794
sewer/pipe/manhole .....................................................
1
303139166
Description of Accident:
Employee #1 entered a new manhole approximately 21 ft in depth and was overcome, lost consciousness, and was unresponsive. Employee #2
entered the manhole in an attempt to rescue Employee #1 and was also overcome and lost consciousness. Two additional co-workers
attempt[ed] to rescue Employee’s #1 and #2 but became dizzy, disoriented and experienced shortness of breath. These employees were able
to exit the manhole. The manhole had been installed approximately two weeks earlier and was placed over an existing and active sewer line
which had not yet been tapped. Employee #1 was pronounced dead at the scene and Employee #2 was hospitalized.
95 ...............................
2000
1731
sewer/pipe/manhole .....................................................
2
119947521
Description of Accident:
Two employees of an electrical contractor were working in a 7.9-meter-deep sump manhole at a water desalination facility site under construction. An employee of a general contractor found the employees unconscious at the bottom of the manhole. An outside rescue service from a
local fire department responded and found the atmosphere in the manhole to contain 8 percent oxygen at the bottom of the sump. The two employees died of hypoxic asphyxia. Post accident evaluations found oxygen levels as low as 2 percent and elevated levels of nitrogen and carbon dioxide. The sump was found to be in contact with warm, moist soil through a series of interconnected perforated pipes designed to drain
excess groundwater. It was suspected that biological activity in the surrounding soil consumed the available oxygen and generated excess levels of nitrogen and carbon dioxide.
97 ...............................
2000
1623
sewer/pipe/manhole .....................................................
2
303961155
Description of Accident:
At approximately 12:15 p.m. on September 26, 2000, Employees #1 and #2 were trying to unclog a sewer line. Employee #1 entered the north
manhole to place a bucket that would catch all the debris coming out of the pipe. Employee #2 was able to release the blockage in the south
manhole, and the water moved to the north manhole. Employee #1, who was still there, called for help and Employee #2 ran to his assistance.
Both workers succumbed to gas present in the pipe, and died of asphyxia.
98 ...............................
2000
1771
sewer/pipe/manhole .....................................................
1
303185839
Description of Accident:
Employee #1 inserted an inflatable plug into a storm sewer pipe located at a street drain so that the pipe could be pumped of water in order to
perform concrete work at the other end of the pipe. He was half way in the drain and was pushing on the inflatable plug to check its fit. The
plug burst and blew him down an intersecting pipe where he drowned.
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99 ...............................
2000
1799
Other ............................................................................
1
303682223
Description of Accident:
Employees #1 and #2, who worked for a nested maintenance contractor, were finishing the turnaround of the sulfur recovery complex at a refinery. They were removing a 14 in. isolation blind from the overhead inlet of a horizontal receiver vessel. The vessel was part of an amine treating unit that had been emptied, steamed out, and drained a few days before. After several attempts, the overhead piping had been replaced
and the blinds had been removed and reinstalled. Employees #1 and #2 were working from a scaffold when they were exposed to strong hydrogen sulfide emissions from the vessel. Employee #1 staggered away, but within minutes had lapsed into unconsciousness and died. Employee
#2 managed to escape and reach grade level. He was hospitalized for observation and released with no lasting effects. The vessel had accumulated sour gas from a connected overhead gas line, tied into nearby sulfur trains that were operating at relatively low pressure. The source
was a single leaking 12 in. gate valve that had been closed and locked out. Employees #1 and #2 were working without respiratory protection
or gas detection equipment. The valve inspection program, lockout/tagout program, and respiratory protections were found lacking. At the time
of the accident, the foreman was also overseeing other crews at the site.
TOTAL NUMBER OF FATALITIES: 31
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25473
TABLE IV–9—CONFINED SPACES IN THE CONSTRUCTION INDUSTRY—Continued
FATAL ACCIDENTS AND INJURIES—1992–2000
[As listed in the Consad report]
Consad accident No.
Year
Industry SIC
code
Number of
reported
fatalities
Type of confined space
Inspection/
activity No.
TOTAL NUMBER OF FATALITIES PREVENTABLE BY THE CONFINED–SPACES–IN–CONSTRUCTIONS PROVISIONS: 30
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Source: OSHA IMIS database, analyzed by OSHA, Directorate of Standards and Guidance and Directorate of Construction.
OSHA also reviewed the narratives for
accuracy. OSHA found duplicate
fatalities reported for CONSAD
Accident Numbers 65, 69, and 72, and
removed those duplicates from the
analysis. In this regard, Appendix C.1 of
the CONSAD Report erroneously shows
two fatalities for accident number 65,
two fatalities for accident 69, and three
fatalities for accident 72. The IMIS
database for these cases, however,
reported a total of one, one, and two
fatalities, respectively. OSHA then
reduced the 34 fatalities cited in the
initial IMIS data report to a final total
of 30 fatalities for the period of 1992 to
2000 to account for the three duplicative
fatalities, in addition to removing the
fatality described in CONSAD Accident
number 67, discussed previously. OSHA
notes that the original CONSAD analysis
may not include all confined-space
accidents. For example, the
supplemental analysis at the end of this
chapter found several confined spaces
where there were electrical hazards; the
CONSAD analysis did not include any
electrical hazards. It is possible that the
original analysis incorrectly excluded
confined spaces when the only hazards
were electrical.
Due to a confidentiality agreement
with BLS, OSHA could not publish
detailed information about the CFOI
data used in the PEA, and OSHA no
longer has access to the research file
containing the data. To account for the
possibility of human error of the initial
review of the CFOI data, OSHA made a
proportionate reduction in the total
fatality count of the CFOI data used in
the PEA. Applying a factor of 30/34
(derived from the adjusted count for
IMIS fatalities due to reporting errors) to
the initial CFOI fatality count of 24, the
total number of CFOI fatalities
decreased to 21.
Therefore, for this FEA, OSHA
concluded that a total of 51
construction-related fatalities due to
confined-spaces entries occurred during
the nine-year period from 1992 to 2000.
Full compliance with the provisions of
this standard would prevent an average
of 5.7 fatalities each year related to
confined spaces in construction;
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applying a probability prevention rate of
91 percent, the standard would prevent
5.2 fatalities each year.
AGCA noted that the results from a
survey of 74 of AGCA’s members,
employing 28,900 full-time workers,
showed no fatalities in confined spaces,
and only two fatalities in construction,
between 2005 and 2007 (p. 59). The
finding that 74 employers had no
fatalities in confined spaces over a
three-year period does not detract from,
or contradict, OSHA’s analysis. OSHA
believes that such a result is perfectly
consistent with the estimate that, from
1992 to 2000, there was an average of
5.7 preventable confined-space fatalities
per year among the millions of workers
engaged in construction covered by this
standard.
Another comment from the AGCA
report made several points asserting that
a standard on confined spaces in
construction was unnecessary. First,
AGCA claimed that the rate of fatal and
serious injuries ‘‘in the affected
industries’’ is declining, and, second,
that OSHA’s analysis is deficient
because it does not compare the
construction rates with rates across
other industries. The report states that
‘‘[t]he injury trends have cost and
benefit implications for assessing the
proposal on a forward looking basis,
which are not considered in the OSHA
report’’ (p. 58). In this case, the analysis
of confined space incidents for the
period 2006 to 2009 show a slight
increase, rather than a decline, in the
number of fatalities as compared to the
original 1992 to 2000 period analyzed
for the original PEA. OSHA therefore
finds no reason to reduce benefits or
costs as result of a long term trend
toward safer practices in confined
spaces. The report does not support its
claim that OSHA’s analysis was
somehow deficient in not comparing the
rates of injury in construction with the
rates in other industries, but OSHA
notes that construction activities
generally have high injury rates.
Moreover, contrary to the commenter’s
assertion that the fatality rate is
declining in comparison to the older set
of data analyzed in the PEA, when
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OSHA analyzed newer fatality data from
between 2006 and 2009 (see Table IV–
10) for the purpose of confirming the
result under the older data, OSHA did
not observe any decline. Instead, it
found the annual fatality rate for
confined spaces in construction over
this period to be higher than during the
earlier period.
The National Utility Contractors
Association (NUCA) urged OSHA to
model the construction rule on the
general industry rule, as OSHA did in
this final rule. In this comment, NUCA
stated:
It is also our opinion that there is no sound
evidence to support the view that a new and
separate standard for construction will
reduce the number of confined space injuries
and fatalities. * * * Therefore, issuing a
new, separate standard for construction will
not only create untold confusion, but also an
unnecessary burden—with no improvement
in safety—on all contractors who have been
successfully using the General Industry
Standard as a guideline to safe entry into
confined spaces.
(ID–075.)
NUCA also suggested the new
classification system in the proposed
rule would have little benefit in terms
of reduced accidents in confined spaces,
but did not provide specific data to
support their claims (ID–075). Other
commenters pointed to the absence of
fatalities among employers that
complied with the general industry
standard when engaged in construction
activities (e.g., ID–035 and ID–113).
As discussed extensively in the
preamble, this final rule is much more
similar to the general industry rule than
was the proposed rule, and it includes
a number of cost-saving measures not in
the proposed rule. For example, this
final rule excludes work performed
under subparts S and entirely from the
scope of the standard and allows
suspension of the permit in certain
circumstances. At the same time, the
final rule for construction also includes
several important distinctions and
clarifications in comparison to the
general industry standard. For example,
the new rule defines the term
‘‘controlling employer’’ and shifts some
of the duties that the general industry
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standard assigns to the host employer to
the controlling employer. This
difference is important in the many
situations, of which there are several
reported in the database, involving host
employers who need construction work
but may not directly run the confinedspace program.
This final rule for construction also
requires continuous monitoring for
atmospheric hazards during permit
entries and during entries under the
alternative procedures specified in
§ 1926.1203(e). With the improved
technology available today, continuous
monitoring involves few costs beyond
the cost of the regular monitoring
required by the general industry
standard. Further, such monitoring is
necessary in confined spaces where
conditions change as the work
progresses, either through the
introduction of an unexpected
substance into the permit space, as in
accidents number 68 and 78, or the
substances used as part of the work
result in new hazards as in accidents
number 89 and 90.
To further evaluate and confirm its
finding that this final standard would
reduce the number of fatalities and
injuries when entering constructionrelated confined spaces, OSHA added a
supplemental table (Table IV–10 shown
below) using more recent accident data,
and modified its methodology for
selecting relevant confined-space
fatalities. The Agency did not rely on
this data in reaching any of the findings
legally required to support this
rulemaking, but the Agency concludes
that this supplemental analysis confirms
the overall validity of the data on which
it based those findings.
The Agency examined selected
narratives of fatal accidents that
occurred in the years 2006 through 2009
and recorded in OSHA’s IMIS database.
To identify fatal accidents in confined
spaces, OSHA conducted a terminology
search of fatal accident narratives using
a list of several terms appearing in
confined-spaces-in-construction work.42
To limit the analysis to accidents related
to construction activities, OSHA
identified construction-related accidents
by those employers classified under the
two-digit Standard Industrial
Classification codes of 15, 16, and 17.
As with the older data, OSHA also
42 The list of search terms included the following:
Confined space, hole, pit, bin, boiler, manhole,
tank, incinerator, scrubber, pier, sewer, transformer,
vault, duct, storm drain, water main, drilled shaft,
enclosed, enclosed beam, crawlspace, trench,
tunnel, vessel, digester, lift station, cesspool, silo,
air receiver, sludge gate, air preheater, step up
transformer, turbine, chiller, bag house, mixer,
reactor, and cofferdam.
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screened the accidents for citations to
subparts P (Excavations) and S
(Underground Construction). OSHA
reviewed the cases and selected only
those cases covered by this final
standard and that the final standard
would, with reasonable certainty,
prevent if employer complied fully with
its provisions. In sum, OSHA identified
23 records involving 31 fatalities from
2006 through 2009 that met all of the
above criteria (construction-related
activities; in SIC 15, 16, or 17; involved
a confined space covered by this final
standard; and were preventable by
compliance with the provisions of the
final standard). Table IV–10 presents
these cases, along with a brief narrative
for each case taken verbatim from the
IMIS records.
As the narratives demonstrate, these
accidents usually resulted from a failure
to follow multiple provisions in the
final standard. For example, in several
of the accidents listed in Table IV–10,
workers died or received injuries after
entering confined spaces to attempt
rescue. These accidents were
preventable had employers followed
appropriate rescue procedures, provided
proper training, posted an attendant to
prevent unauthorized entry, or through
a combination of these steps, all
prescribed by this final standard. In
most other examples, the prohibition on
entry without a permit program in place
would prevent employee exposure to
the hazard.
For the purposes of determining how
the different provisions of the standard
prevent the accidents identified in the
supplemental analysis, OSHA grouped
the provisions by general purpose. For
example, OSHA grouped all provisions
related to evaluation and classification
of standards into one heading called
‘‘Classification and Evaluation,’’ and
grouped all of the provisions related to
setting up and implementing a permit
system under the heading of ‘‘Permit
System’’. OSHA used these headings to
avoid a confusing list of overlapping
and interdependent provisions, and to
compare benefits to costs later in this
section.
The Agency sometimes attributed an
accident to a set of provisions even
though it was unclear from the accident
abstract whether the employer followed
that provision on a voluntary basis.
Therefore, although OSHA accounts for
baseline compliance in terms of costs, it
does not account for baseline
compliance in terms of potential
monetized benefits. OSHA believes from
the descriptions of the fatalities and
injuries presented in Table IV–10 that
baseline compliance with most
provisions, though high when
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examining compliance across all
affected industries, was minimal in the
situations in which these accidents
occurred. It is unlikely that the
accidents detailed in this chapter would
occur had the affected firms had a
proper confined-spaces program in
place. Following some groups of
provisions, such as ventilation and
hazard isolation, would have assured
that the accidents could not have
possibly happened.
OSHA also used the term
‘‘potentially’’ in this analysis to describe
the prevention of some accidents
because, as noted above, some accident
descriptions are unclear. The Agency
also used the term because some
provisions, such as the training and
information-exchange provisions, do not
directly and automatically prevent
accidents, but instead contribute to the
likelihood that employers will correctly
follow other provisions and, therefore,
prevent accidents. In the final section of
this chapter, OSHA presents a breakeven sensitivity analysis to examine
further the number of injuries and
fatalities that would need to be
prevented for the benefits of this
standard to equal its costs.
In some cases, a state had a confinedspaces rule in place at the time the
accident occurred. In one accident, the
state rule was a comprehensive rule
similar to this final rule. OSHA removed
this accident from the database. In other
cases, the state rule included only some
of the provisions in OSHA’s final
standard. In these cases, OSHA did not
list provisions in the OSHA standard
that are also mirrored in the state rule,
but listed the OSHA provisions not
mirrored in the state rule.
In the remainder of this section,
OSHA describes the groups of
provisions that it used in analyzing
accidents, and the criteria for
determining whether the provision
could potentially prevent the accident.
Some accidents involved more than one
fatality, and, in these cases, different
sets of provisions might be relevant to
different fatalities.
Evaluation, Classification, and
Notification Provisions: This group
includes all provisions related to
requirements to identify and classify
confined spaces, such as
§§ 1926.1203(a) and 1926.1203(b). The
evaluation and classification provisions
can trigger other employer duties, such
as an employer duty to prevent entry
under § 1926.1203(c), or to condition
entry in accordance with
§ 1926.1203(d). For the purposes of this
analysis, this group includes the
provisions of § 1926.1203(c) that require
employers to use barriers or other means
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necessary to prevent unauthorized entry
to a confined space. Since no other
preventive measures would go into
effect without such evaluation and
classification, OSHA found that these
provisions had potentially preventive
effects for all accidents examined.
Information-Exchange Provisions:
This group includes all provisions
related to requirements for host
contractors, controlling contractors, and
other contractors to exchange
information, such as § 1926.1203(h).
The accident descriptions are unclear
regarding information-exchange
activities. OSHA classified an accident
as potentially prevented by these
provisions if the description indicated
the presence of more than one
contractor or if the accident took place
in an existing structure (mainly sewers)
where information about the existing
structure would almost certainly be
known beforehand. OSHA did not
consider the accident potentially
prevented by this provision if it took
place in a home or in new construction
projects, unless there was an indication
of multiple contractors present. In those
cases, there is not typically a host
employer with relevant knowledge
about hidden hazards available, but
there may be multiple employers
present. Because the accident
descriptions do not typically indicate
whether there were multiple employers
on a site, this approach may
underestimate the number of multicontractor sites.
Permit-Program Provisions: This
group includes the provisions requiring
a permit program or alternative
procedures for entry, as well as the
requirements for setting up and
implementing systems, such as
§§ 1926.1203(d), 1926.1203(e), and
1926.1204(a). OSHA determined that
these provisions could have a role in
potentially preventing accidents in all
situations except where the entry took
place by explicit orders of a supervisor
or where the entry was for rescue
purposes. (These two exceptions might
be violations of these requirements, but
it is unlikely that a permit system could
prevent casualties related to rescue
entry (though they might prevent the
need for such entry) or entries explicitly
approved by supervisors.) OSHA also
noted situations in which an entry
seemed to be unnecessary (such as
entries to retrieve dropped items) and,
therefore, was extremely unlikely to
take place under a permit system with
clear prohibitions on unauthorized
entry. OSHA determined that all such
accidents involving unnecessary entries
would be preventable had employers
complied with these provisions.
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Early-Warning-System and
Atmospheric-Testing or -Monitoring
Provisions: This group includes all
provisions that require or imply the
need for atmospheric testing or
monitoring, including § 1926.1203(a)
(when monitoring is necessary for
identification), §§ 1926.1204(b),
1926.1204(c), and 1926.1204(e). OSHA
determined that these provisions could
have a role in preventing accidents in
all situations involving asphyxiation
(whether due to lack of oxygen or toxic
gasses) or a build-up of explosive
vapors. This group also includes the
requirement in § 1926.1204(e)(1)(iii) to
monitor for non-isolated engulfment
hazards, such as liquids flowing through
a sewer system. OSHA determined that
this provision could prevent accidents
in which employees drown or
asphyxiate when liquids or other
flowables that were not previously in
the confined space entered the space in
the absence of barriers or other isolation
methods designed to contain such
hazards.
Ventilation and Hazard-Isolation
Provisions: This group includes all
provisions that require or imply the
need for ventilation, as well as isolation
of physical hazards, such as parts of
§ 1926.1203(e) and portions of
§ 1926.1204. OSHA included an
accident as potentially preventable by
these provisions whenever the accident
occurred as a result of a hazard inside
the confined space. For most of these
accidents, either ventilation or hazardisolation measures, such as disabling
and locking out electrical hazards
temporarily, could prevent the accident.
For other accidents, such as some
drownings, arranging for the bypass of
water or other liquid solutions might
have been possible, thereby preventing
the accident.
Provisions Requiring an Attendant:
This group includes all provisions that
require or imply the need for an
attendant when someone is inside the
confined space. The attendant in most
cases has two duties: (1) Assuring that
continuous monitoring takes place (if it
is appropriate) and warning the person
to exit the space if necessary; and (2)
conducting an appropriate non-entry
rescue. For the purposes of this analysis,
OSHA listed an accident as potentially
preventable had an attendant been
present if there was no notation of
another person present when someone
entered the confined space. There are
many other situations in which the lack
of an attendant may have been
responsible for the accident because the
person present was not continually
assessing the conditions inside the
permit space or was incapable of
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25475
conducting a non-entry rescue or
summoning rescue or emergency
services; however, other provisions are
more likely to potentially prevent such
accidents.
Rescue-Capability Provisions: This
group includes all provisions, such as
§§ 1926.1204(i) and 1926.1211, that
require the development and
implementation of a plan addressing
rescue capability and summoning
emergency services, with the plan
involving non-entry rescue when
feasible. For the purposes of this
analysis, OSHA listed an accident as
potentially preventable by improved
rescue capability for (1) all cases of
asphyxiation when quick removal of
endangered workers from the confined
space and prompt treatment were
necessary to prevent the fatality, and (2)
for other accidents, such as drowning
and electroshock, when timely removal
and treatment might have an effect.
OSHA did not consider this provision to
have the potential to prevent deaths
resulting from burns, even though it is
possible that more immediate treatment
or rescue before combustion occurred
would mediate or prevent the accident.
OSHA also noted under this provision
the special, and all too numerous, cases
when the rescuer(s) became a fatality.
Training Provisions: This group
includes all provisions that require
employers to develop and implement
training, such as §§ 1926.1207 and
1926.1208. OSHA found that better
training could potentially prevent all of
the accidents, except for one accident
that was preventable using only
appropriate physical barriers.
Equipment Provisions: This group
includes all provisions that require the
employer to (1) provide necessary
equipment, such as communication
equipment, necessary for attendants to
perform their duties (§ 1926.1203(d)(3)),
or (2) develop appropriate lighting
(§ 1926.1204(d)(5)). For the purposes of
this analysis, OSHA listed an accident
as potentially preventable by these
provisions when employees working
together had difficulties communicating
or there was an indication of inadequate
lighting or general difficulty locating
physical hazards before contacting
them. There are some provisions in this
group that OSHA did not analyze in
terms of their potential to prevent
accidents. These provisions include
requirements for barriers and disposable
coveralls. However, OSHA’s methods of
searching for confined-space accidents
could not identify the accidents that
these provisions would prevent.
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TABLE IV–10—CONFINED SPACES IN THE CONSTRUCTION INDUSTRY
FATAL ACCIDENTS AND INJURIES—2006–2009
Industry
SIC
Year
2006 ...........................
1611
Number of
reported
fatalities
Type of confined space
sewer .......................................................................................................
Activity No. 1
2
309775443
Description of Accident:
An employee climbed down into a sewer vault to retrieve a tool he dropped and lost consciousness. A second employee entered the sewer
vault in an attempt to rescue his co-worker and also lost consciousness. Both employees died.
Provisions That Could Potentially Have Prevented the Fatality:
Evaluation and Classification
Information Exchange
Permit Program (1 of 2 fatalities)
(Not Ventilation and Hazard Isolation; Early Warning System and Atmospheric Testing or Monitoring; or Rescue Capacity because these were
already required in the State where the accident took place)
Training
Industry
SIC
Year
2006 ...........................
1623
Number of
reported
fatalities
Type of confined space
storm drain ...............................................................................................
Activity No. 2
1
308437631
Description of Accident:
Employee #1 and his crew were installing storm drainage pipes in an older neighborhood. During the installation of the drainage pipes, damage
had been caused on the existing natural gas pipe lines in the neighborhood. The odor of gas was present prior to the day of the installation,
and the local gas company had been contacted to identify and repair the leaks. The smell of gas was still present and noticed by the supervisor, employees and others; however, the supervisor did not contact the gas company to investigate the odor, and to locate the leak. The supervisor also did not remove the employees from the excavation where the gas odor existed, and did not test the atmosphere of the excavation
to determine if there was a hazardous atmosphere or condition in the excavation. The supervisor directed Employee #1 to enter the 48-inch diameter drainage pipe line to retrieve a laser surveying machine that was located approximately 90 feet within the pipe line. Natural gas that had
escaped from two breaks in the gas line had accumulated within the storm drain pipe line. While Employee #1 was in the pipe line, the natural
gas within it ignited. The specific ignition source was not identified. Even though severely burned, Employee #1 was able to exit the storm drain
pipe line, and was taken to the hospital. Six days later, he died as a result of his injuries.
Provisions That Could Potentially Have Prevented the Fatality:
Evaluation and Classification
Information Exchange
Ventilation and Hazard Isolation
Early Warning System and Atmospheric Testing or Monitoring
Attendant
Training
Industry
SIC
Year
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2006 ...........................
1623
Number of
reported
fatalities
Type of confined space
sewer .......................................................................................................
Activity No. 3
1
310350418
Description of Accident:
Three employees were working on a sewer system that was newly installed and not yet in use. A section of the line had been plugged and tested for leakage. Employee #1 entered the sewer vault, which was approximately 15 to 20 feet deep, to remove a plug. Employee #1 collapsed
into approximately 6 inches of unidentified liquid at the bottom of the sewer vault. Employee #2 entered the sewer vault to assist Employee #1.
Employee #2 also collapsed at the bottom of the sewer vault. Employee #3 attempted to provide assistance to Employees #1 and #2. Employee
#3 began to feel ill about halfway down and then decided to emerge from the sewer vault. Fire/EMS Department responded to the scene. Coworkers of the employees attached a hose approximately 19 feet long to an air compressor and used it to blow air into the sewer vault. Employee #2 regained consciousness and was able to assist in rescuing Employee #1 and himself from the sewer vault. All three employees were
transported to area hospitals. Employee #1 later died at the hospital. Employees #2 and #3 were treated, hospitalized, and released in the following days.
Provisions That Could Potentially Have Prevented the Fatality:
Evaluation and Classification
Information Exchange
Permit Program
(Not Ventilation and Hazard Isolation, Atmospheric Monitoring, or Rescue capacity because these were already required in the State where the
accident took place)
Training
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Industry
SIC
Year
2007 ...........................
1541
Number of
reported
fatalities
Type of confined space
manhole ...................................................................................................
Activity No. 4
1
311032809
Description of Accident:
Employee #1, while doing an elevation survey of the invert of a storm water pipe in a manhole, entered the manhole to find the bottom of the
pipe. While in the manhole, Employee #1 was overcome due to a lack of oxygen and died. Employee #2 entered the same manhole, and was
also overcome. Employee #2 was hospitalized and released the next day.
Provisions That Could Potentially Have Prevented the Fatality:
Evaluation and Classification
Information Exchange
Permit Program (Entry very preventable)
Ventilation and Hazard Isolation
Early Warning System and Atmospheric Testing or Monitoring Attendant
Rescue Capacity
Training
Industry
SIC
Year
2007 ...........................
1623
Number of
reported
fatalities
Type of confined space
lift station .................................................................................................
Activity No. 5
4
307043844
Description of Accident:
The victim was in the process of assisting another company with the replacement of a sump pump in an underground lift station which collected
draining and leached water from a construction debris landfill. Three employees of the other company entered the lift station and succumbed to
exposure to hydrogen sulfide gas. The victim had entered the lift station in an attempt to assist/rescue the three victims from the other company, and also succumbed to hydrogen sulfide gas. Rescue services arrived at the scene and performed air quality monitoring which revealed
that the victim and the three victims from the other company were exposed to concentrations of up to 200 PPM of hydrogen sulfide gas. Body
retrievals were initiated at that point. The lift station was determined to be a permit-required confined space. The other company (host employer) had not evaluated the lift station to determine that it was a permit-required space. Both companies had not developed and implemented
a written permit space program.
Provisions That Could Potentially Have Prevented the Fatality:
Evaluation and Classification
Information Exchange
Permit Program (3 of 4 fatalities)
Ventilation and Hazard Isolation
Early Warning System and Atmospheric Testing or Monitoring
Rescue Capacity (Attempted rescue resulted in a fatality)
Training
Industry
SIC
Year
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2007 ...........................
1623
Number of
reported
fatalities
Type of confined space
manhole ...................................................................................................
Activity No. 6
2
310177456
Description of Accident:
Employees #1 and #2 were working in an approximately 7 ft diameter water vault located about 16 ft underground. The vault contained a 12 in.
water main and a 4 in. water main that was equipped with a water meter. The vault had been constructed approximately ten days earlier and
had sat undisturbed until the day of the accident, when the employees were scheduled to conduct a pressure test of the system. Employee #1,
the foreman, went down into the vault to read the meter. When he did not return, Employee #2, a laborer, looked down through the manhole
cover and saw Employee #1 laying on the ground. Employee #2 called out to a coworker that Employee #1 was down and then entered the
vault through the manhole and climb down the ladder. The coworker came over to the manhole and saw Employee #1 on the ground and Employee #2 hanging upside down, with his leg caught between the ladder rungs. Neither employee responded to the coworker’s calls. The coworker also started down the manhole but noticed an overpowering musty odor and abruptly stopped and exited. The Fire Department and
paramedics responded to the job site and retrieved Employees #1 and #2, both of whom had died. At the time of rescue the Fire Department’s
four gas meters measured the oxygen level in the vault at approximately 9.2 ppm. In its referral to OSHA, the Fire Department referenced two
workers who succumbed to an IDLH atmosphere.
Provisions That Could Potentially Have Prevented the Fatality:
Evaluation and Classification
Information Exchange
Permit Program (1 of 2 fatalities)
Ventilation and Hazard Isolation
Early Warning System and Atmospheric Testing or Monitoring
Rescue Capacity (Attempted rescue resulted in a fatality)
Training
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Industry
SIC
Year
2007 ...........................
1623
Number of
reported
fatalities
Type of confined space
manhole ...................................................................................................
Activity No. 7
2
310253398
Description of Accident:
Employee #1 and Employee #2 were both asphyxiated when they entered a 12 ft manhole to perform grouting work. Employee #1 entered the
12 ft manhole and collapsed. Employee #2 entered the manhole to help Employee #1 and then Employee #2 collapsed. This was the company’s first time performing sewer line work and Employee #1 and #2 entered the space without required testing. The employer did provide a
tripod winch system over the manhole with cable attached to rescue harness. In addition, a scott gas detector was used to detect any gases in
hole; none was detected. The oxygen level however was 8 near the top of the hole and 3 at or near the bottom of the hole.
Provisions That Could Potentially Have Prevented the Fatality:
Evaluation and Classification
Information Exchange
Permit program (1 of 2 fatalities)
Ventilation and Hazard Isolation
Early Warning System and Atmospheric Testing or Monitoring Provisions
Rescue Capacity (Attempted rescue resulted in a fatality)
Training
Industry
SIC
Year
2007 ...........................
1623
Number of
reported
fatalities
Type of confined space
manhole ...................................................................................................
Activity No. 8
1
311354807
Description of Accident:
Employee #1 entered manhole to remove line plugs to activate a manhole sewer system, the manhole was 10.5 ft deep. The probable cause of
death was H2S poisoning as a result of employee working in a sewer manhole; this is according to the county’s forensic science department.
The manhole had not been entered and was not monitored for toxicity, oxygen level or explosive levels. No tripod was in-place for emergency
retrieval of Employee #1.
Provisions That Could Potentially Have Prevented the Fatality:
Evaluation and Classification
Information Exchange
Permit Program
Ventilation and Hazard Isolation
Early Warning System and Atmospheric Testing or Monitoring Provisions
Attendant
Rescue Capacity
Training
Industry
SIC
Year
2007 ...........................
1721
Number of
reported
fatalities
Type of confined space
crawl space ..............................................................................................
Activity No. 9
2
126192012
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Description of Accident:
Employee #1, a painting contractor, was hired by the property owner to apply primer over the creosote floor joists. Employee #1 and #2 were
working in a crawl space under the bedroom of the residence applying primer to the floor joists. The incandescent work lamp or a broken light
bulb ignited the vapors from the primer. The two employees were burned and died. The other employees suffered minor burn injuries. The contributing causal factors: The air in the crawl space was not flushed or purged of flammable vapors and no air testing to determine whether dangerous air contamination or oxygen deficiency existed. Arson and homicide investigators were called to the scene and were investigating the
cause of the accident, which appeared to be accidental. The crawlspace was located underneath one of the bedrooms and was measured between 21 in. to 22 in. from the foundation to the floor of the bedroom.
Provisions That Could Potentially Have Prevented the Fatality:
Evaluation and Classification
Permit Program
(Not Ventilation and Hazard Isolation because this was already required in the State where the accident took place)
(Not Early Warning System and Atmospheric Testing or Monitoring because this was already required in the State where the accident took
place)
Attendant
Training
Industry
SIC
Year
2008 ...........................
1711
Number of
reported
fatalities
Type of confined space
lift station .................................................................................................
Description of Accident:
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2
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Number of
reported
fatalities
Activity No. 10
Industry
SIC
Year
Type of confined space
Employee #1 entered a sewer lift station to check for leaks in the line. Employee #1 was overcome by hydrogen sulfide gas. A second employee entered the station to retrieve Employee #1, and also was overcome by the gas. Both employees died from overexposure to hydrogen
sulfide gas.
Provisions That Could Potentially Have Prevented the Fatality:
Evaluation and Classification
Information Exchange
Permit Program
Ventilation and Hazard Isolation
Early Warning System and Atmospheric Testing or Monitoring Provisions
Rescue Capacity (Attempted rescue resulted in a fatality)
Training
Industry
SIC
Year
2009 ...........................
1623
Number of
reported
fatalities
Type of confined space
manhole ...................................................................................................
Activity No. 11
1
313122616
Description of Accident:
Employee #3 fell into a manhole and suffered a head injury and was life-flighted to the hospital. Employee #2 became unconscious in a manhole and was rescued and life-flighted to the hospital. Employee #1 entered the manhole to attempt rescue of employee #2 and became unconscious and died before he could be rescued.
Provisions That Could Potentially Have Prevented the Fatality:
Evaluation and Classification
Ventilation and Hazard Isolation
Early Warning System and Atmospheric Testing or Monitoring Provisions
Rescue Capacity (Attempted rescue resulted in a fatality)
Training
Industry
SIC
Year
2009 ...........................
1791
Number of
reported
fatalities
Type of confined space
tank ..........................................................................................................
Activity No. 12
1
311964886
Description of Accident:
Employee #1 was found unresponsive on scaffolding in the residential water tank in which he was performing stick welding on the interior overhead of the tank. He was removed from the tank, and emergency services summoned. He could not be revived. The medical examiner determined that core body temperature of employee #1 exceeded 109 degrees Fahrenheit, indicating that the preliminary cause of death was
hyperthermia.
Provisions That Could Potentially Have Prevented the Fatality:
Evaluation and Classification
Permit Program
Ventilation and Hazard Isolation (ventilation required beyond the amount needed to address welding fumes)
Attendant
Training
Industry
SIC
Year
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2009 ...........................
1794
Number of
reported
fatalities
Type of confined space
manhole ...................................................................................................
Activity No. 13
1
309620219
Description of Accident:
An employee entered into 18-in. manhole to retrieve part of laser equipment and was overcome by methane and lack of oxygen. He died of asphyxiation.
Provisions That Could Potentially Have Prevented the Fatality:
Evaluation and Classification
Information Exchange
Permit Program (Entry very preventable)
Ventilation and Hazard Isolation
Early Warning System and Atmospheric Testing or Monitoring Provisions
Attendant
Rescue Capacity
Training
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Industry
SIC
Year
2009 ...........................
1794
Number of
reported
fatalities
Type of confined space
tunnel .......................................................................................................
Activity No. 14
1
313553604
Description of Accident:
Employee #1 was inside a 24 inch pipe that ran through a tunnel underneath a highway. Employee #1 was approximately 140 feet inside the
pipe when a rain storm flooded the pipe drowning the employee.
Provisions That Could Potentially Have Prevented the Fatality:
Evaluation and Classification
Information Exchange
Permit Program
Attendant
Rescue Capacity
Training
Early Warning System
Industry
SIC
Year
2006 ...........................
1711
Number of
reported
fatalities
Type of confined space
Crawl space .............................................................................................
Activity No. 15
1
309539559
Description of Accident:
On August 7, 2006, Employee #1, of Mesquite Plumbing Company, entered the crawl space of a house undergoing renovations to insulate a
new plumbing fixture that a coworker had installed. During the course of his work he contacted a live wire and was electrocuted.
Provisions That Could Potentially Have Prevented the Fatality:
Evaluation and Classification
Permit program
Ventilation and Hazard Isolation
Attendant
Rescue Capacity
Training
Industry
SIC
Year
2006 ...........................
1623
Number of
reported
fatalities
Type of confined space
manhole ...................................................................................................
Activity No. 16
1
310345053
Description of Accident:
On September 28, 2006, Employee #1, a construction worker, fell into a concrete manhole structure. He suffered a fractured neck and back.
Employee #1 was flown by helicopter to the hospital, where he died.
Provisions That Could Potentially Have Prevented the Fatality:
Evaluation and Classification
Equipment (lack of cover or methods of assuring safety when a cover is removed)
Industry
SIC
Year
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2007 ...........................
1521
Number of
reported
fatalities
Type of confined space
crawl space ..............................................................................................
Activity No. 17
1
120205794
Description of Accident:
On July 23, 2007, Employee #1, age 19, and a coworker were reinstalling an electrical outlet into a new bathroom wall after it had been removed from the pre-existing wall. The 120-volt outlet electrical box was energized and lying on the floor. Employee #1 went into a crawl space
under the house while the coworker went to the electrical panel and shut off the power to the home. Employee #1 was having trouble seeing in
the darkness of the crawl space, and he asked the coworker to turn on the power so he could use a halogen lamp that had a cord running up
through the floor and into an outlet in the kitchen. When the coworker turned on the power, this also energized the electric conductors that Employee #1 was wiring in the junction box. He was lying on his back under the floor, on top of the water line for the home. This pipe had been
used to ground the electrical system of the house when it was built and Employee #1 was electrocuted when he connected the wires. The coworker, hearing a noise, tried to communicate with Employee #1. When he did not get a response, he again turned off the electricity to the
house. The coworker alerted the owner and tried to call 911 on his cell phone, but could not get through. He and the owner tried to call 911 on
the house’s land line, but it was electrically-based, and so they once again turned on the power to place the call. The owner then cut a hole in
the floor, removed Employee #1 from the crawl space, and attempted CPR until paramedics arrived. The coroner stated cause of death was low
voltage electrocution.
Provisions That Could Potentially Have Prevented the Fatality:
Evaluation and Classification
Permit Program
Ventilation and Hazard Isolation
Attendant
Training
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Industry
SIC
Type of confined space
Number of
reported
fatalities
Activity No. 17
Industry
SIC
Year
Type of confined space
Number of
reported
fatalities
Activity No. 18
Equipment (lighting)
Rescue Capacity
Year
2007 ...........................
1741
boiler ........................................................................................................
1
311213326
Description of Accident:
On December 11, 2007, Employee #1 was part of a crew engaged in stone work at a residential site. To complete the job, they covered the
chimney with plastic. Once the plastic was in place, the coworkers went to put away the tools for the night, and left Employee #1 to stitch close
[ ] any openings in the plastic covering. The chimney housed the vent for an Ultra 310 boiler system. When the coworkers returned, they found
Employee #1, unconscious, in the plastic enclosure. He died of carbon monoxide poisoning.
Provisions That Could Potentially Have Prevented the Fatality:
Evaluation and Classification
Permit Program (Entry very preventable)
(Not Ventilation and Hazard Isolation or Rescue Capacity because this was already required in the State where the accident took place)
Attendant
Training
Industry
SIC
Year
2008 ...........................
1711
Number of
reported
fatalities
Type of confined space
crawl space ..............................................................................................
Activity No. 19
1
311794093
Description of Accident:
On or about 3:30 p.m. on November 6, 2008, Employee #1, a 31 year-old-male working for Atm Plumbing, was working in a crawl space under
a private house. The crawl space was wet from recent rains. Employee #1 was using a manual operated pipe cutter to cut a water pipe when
he received an electrical shock and became unconscious. Employee #2 was also under the house using a trouble light to illuminate the work
area was not using a GFCI. Unbeknown to Employee #1 the water pipe that he was working on was also used for the electrical grounding system for the house. Employee #2 pulled him out of the crawl space. Paramedics transported Employee #1 to a local hospital where he was pronounced dead.
Provisions That Could Potentially Have Prevented the Fatality:
Evaluation and Classification
Permit Program
Ventilation and Hazard Isolation
Attendant
Training
Equipment
Rescue Capacity
Industry
SIC
Year
2008 ...........................
1711
Number of
reported
fatalities
Type of confined space
duct ..........................................................................................................
Activity No. 20
1
311815492
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Description of Accident:
On May 21, 2008, Employee #1 was with a crew installing a steel security grate inside the duct system of a 10-ton Trane air conditioning system (Model Number THC120A4RGAOW2B, Serial Number 8044100711L) that was located on a roof. As he crawled into the duct to weld the
grate into place, the back of his head contacted an energized heat strip on the air conditioning unit coil. Employee #1 was electrocuted. The
electrical power to the air conditioning unit had not been deenergized and locked or tagged out.
Provisions That Could Potentially Have Prevented the Fatality:
Evaluation and Classification
Permit Program
Ventilation and Hazard Isolation
Rescue Capacity
Training
Industry
SIC
Year
2008 ...........................
1742
Number of
reported
fatalities
Type of confined space
attic ..........................................................................................................
Description of Accident:
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Activity No. 21
1
312098551
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Industry
SIC
Year
Number of
reported
fatalities
Type of confined space
Activity No. 21
On May 17, 2008, Employee #1 was spraying foam insulation in the enclosed attic space of a two story, single-family home that was undergoing renovations. He had accessed the attic via an aluminum ladder through a hole in the second floor ceiling. A flash fire occurred, killing Employee #1. Inadequate ventilation contributed to the buildup of vapors. The ignition source was not determined.
Provisions That Could Potentially Have Prevented the Fatality:
Evaluation and Classification
Permit Program
Ventilation and Hazard Isolation
Early Warning System and Atmospheric Testing or Monitoring (Work may have caused build-up of vapors)
Attendant
Training
Industry
SIC
Year
2009 ...........................
1731
Number of
reported
fatalities
Type of confined space
crawl space ..............................................................................................
Activity No. 22
1
313555591
Description of Accident:
On August 18, 2009, Employee #1 was installing a new direct TV cable. Employee #1 was crawling under the house and came into contact with
an energized wire. He was electrocuted.
Provisions That Could Potentially Have Prevented the Fatality:
Evaluation and Classification
Permit Program
Ventilation and Hazard Isolation
Rescue Capacity
Attendant
Training
Total Number of Fatalities: 30
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Source: OSHA IMIS database, analyzed by OSHA, Directorate of Standards and Guidance and Directorate of Construction.
For the FEA’s supplemental data as
shown in Table IV–10, OSHA, as
previously noted, carefully reviewed
and selected from the IMIS database
only those cases determined preventable
by full compliance with the provisions
of the final standard. As a result, OSHA
did not need to apply a probability
prevention rate to estimate the number
of preventable fatalities. As itemized
above, OSHA identified 30 preventable
fatalities over the four-year period,
2006–2009, for an average of 7.5
fatalities prevented annually by full
compliance with this final standard.
This supplemental analysis supports
OSHA’s conclusions that the problem of
confined-space fatalities did not
diminish in the construction industry
over this period, and that the regulated
community still needs the final
standard. OSHA does not believe this
supplemental analysis is necessary, but
believes that it will aid the public in
understanding OSHA’s conclusions.
It is important to note that the
approach used in this estimation is
conservative in that there are other fatal
events that were likely preventable but
not included in the IMIS database. For
example, the Bureau of Labor Statistics’
Census of Fatal Occupational Injuries
for 2011 showed 111 fatalities in
construction from exposure to harmful
substances or environments, and 123
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fatalities from contact with objects and
equipment (these numbers include 4
fatalities in new single-family housing
construction from contact with objects
and 10 fatalities in residential
remodeling from exposure to harmful
substances or environments). Some fatal
injuries that are preventable by the final
standard may not appear in the IMIS
database because the database only
includes accidents involving a fatality
or a catastrophe with three or more
injuries that result in hospitalization.
Estimation of Averted Injuries
In a 1994 report to OSHA, the
Confined Spaces Work Group of the
Advisory Committee on Construction
Safety and Health (ACCSH) estimated
that the ratio of lost time injuries (LTI)
to fatalities in confined spaces was
approximately 100:1 for general
industry and 200:1 for construction (see
ACCSH, 1994, pg. 6). In the PEA, OSHA
used this range of 100 to 200 LTIs per
fatality to estimate the number of
injuries prevented by the proposed rule.
At the public hearing on the proposed
rule, the Edison Electric Institute’s
representative noted, ‘‘There’s no
explanation or support for the assertion
that there has been under-counting of
injuries, however, and we cannot
discern any basis for multiplying these
numbers by 100 and 200’’ (ID–210, Tr.
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p.99). As noted above, OSHA explained
that those estimates came from the
ACCSH report, which was the best
available evidence. The commenter did
not dispute those numbers or, more
importantly, provide any alternatives
numbers as its best evidence. Perhaps
the commenter mistakenly concluded
that OSHA multiplied the IMIS injury
numbers by 100 and 200; however, the
multiplication applied to the numbers
of fatalities, because OSHA does not
have data on the number of non-fatal
injuries.
In this FEA, OSHA provided updated
estimates of the number of non-fatal
injuries involving confined spaces in
construction and further clarified the
basis for its estimates. As a preliminary
matter, the Agency notes again that
OSHA’s IMIS database, which is the
source of information about fatal
accidents, does not report most injuries.
As noted above, the IMIS database
includes only accidents involving a
fatality or a catastrophe with three or
more injuries that result in
hospitalization. Therefore, the IMIS
database seldom captures injuries
involving accidents that do not result
either in a fatality or hospitalization of
three or more workers.43 Because OSHA
43 The Survey of Occupational Injuries and
Illnesses (SOII) produces annual estimates of counts
and rates of new workplace injuries and illnesses,
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could not find a data source for reliable
estimates of non-fatal injuries in
confined spaces in construction,44
OSHA again relied on the expertise of
ACCSH for these estimates.
Recognizing the age of the ACCSH
Work Groups’ LTI estimates of 100:1
and 200:1, OSHA attempted to
corroborate these estimates using data
from the BLS CFOI and the BLS Survey
of Occupational Injuries and Illnesses
(SOII). According to BLS,45 in 2009,
there were a total of 4,090 occupational
fatalities and 3,277,700 nonfatal
occupational injuries for private
industry overall, and 834 fatalities and
251,000 nonfatal injuries for the
construction industry. Using these
estimates of fatalities and injuries, the
ratio of injuries to fatalities is 800:1 for
all private industries, and 300:1 for the
construction industry.
In light of the large injury-to-fatality
ratios apparent in the recent CFOI and
SOII data, OSHA confirmed that the
ratios recommended by the expert
ACCSH Confined Spaces Work Group
are reasonable and conservative, and
used the average of the two ratios (150
injuries per fatality) in this FEA to
estimate the number of non-fatal
injuries. Calculations relating publicly
reported injury-to-fatality statistical data
in construction also confirm the
but also is subject to under-reporting for a variety
of reasons, including missing cases, the reporting of
sample cases from large establishments, timeliness
of updates to the logs and data collection, and
employer doubts about the recordability of some
cases (see Ruser, 2008). Furthermore, OSHA is
unable to confirm the determination of accidents in
‘‘confined spaces’’ as defined by SOII and,
therefore, relied on OSHA’s IMIS database.
44 OSHA takes note of the AGCA survey finding
of only 2 confined-space injuries among the 74
responding employers (ID–0222, p. 29). However,
this finding does not furnish a basis for estimating
the number of injuries preventable with full
compliance with this rule due to its lack of
representativeness. Not all of the respondents even
had confined spaces on their job sites. Moreover,
AGCA designed the survey explicitly not to learn
about injuries in confined spaces, but ‘‘to determine
the impact of compliance costs for contractors
under OSHA’s Proposed Rule on Confined Space
[sic]. . . . ’’ It instructed respondents to ‘‘carefully
review the background information detailed below
. . . before submitting your information. OSHA’s
proposed rule for confined space [sic] in
construction is complicated, costly to implement,
and does not provide significant increases in safety
above the existing general industry standard.’’ The
survey did not provide a definition of a confined
space or otherwise seek to ensure that the person
filling out the survey was familiar with the
appropriate definition.
45 Table A–1, Fatal Occupational Injuries by
Industry, Event and Exposure, available at https://
www.bls.gov/iif/oshwc/cfoi/cftb0241.pdf, and Table
2, Number of Nonfatal Occupational Injuries and
Illnesses by Case Type and Ownership for Selected
Industries, 2009 News Release USDL 10–1451,
available at https://www.bls.gov/news.release/pdf/
osh.pdf.
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reasonableness of the estimates OSHA
used.46
Based on OSHA’s annual estimate of
5.2 confined-spaces-in-construction
fatalities avoided when fully complying
with the provisions of this standard, and
the 91 percent preventability rate,
OSHA estimated that there would have
been a total of between 520 and 1,040
confined-spaces-in-construction nonfatal injuries during the period of 1992
to 2000, with a midpoint of 780 as the
total number of non-fatal injuries
avoided each year when fully
complying to the provisions of this
standard. Applying a similar
methodology of a 100:1 to 200:1 fatalityto-injuries ratio to the supplemental
data in Table IV–10, OSHA estimates
that, given 30 fatalities between the
period of 2006 to 2009, there would be
a total of 3,000 and 6,000 non-fatal
injuries prevented by the final standard
in that time period, or an average of 750
and 1,500 (with a midpoint of 1,125)
injuries prevented per year.
Assignment of Monetary Values to
Avoided Injuries and Fatalities
In the PEA, OSHA used a willingnessto-pay approach to estimate a monetary
value of $50,000 for each prevented
injury and $6.8 million for each
prevented fatality. One commenter
stated that the estimated value of
$50,000 per prevented injury had
‘‘absolutely no foundation or source for
accuracy’’ and was ‘‘substantially
inflated,’’ but did not provide any
specifics or suggest an alternative (ID–
100). The AGCA report suggested that
OSHA instead use workers’
compensation claims, which it
estimated to be $242,770 per fatality and
$31,664 per injury (ID–222).
Workers’ compensation claims do not
reflect a willingness-to-pay approach or
represent the full costs associated with
workplace fatalities and injuries.
Workers’ compensation systems cover
medical expenses and partial payment
of wages lost as a result of workplace
accidents, or, in the case of fatalities,
burial costs and part of lost future
wages. However, workers’ compensation
does not cover other costs resulting from
fatalities and injuries, such as pain and
suffering. Therefore, it would be
inaccurate to base estimates of total
societal costs of injuries and illnesses on
workers’ compensation claims.
As in the PEA, and following the
approach recommended by OMB
Circular A–4 (OMB, 2003) and common
analytic practice, OSHA developed
estimates of the benefits of avoided
injuries and fatalities in this FEA based
46 See,
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25483
on the willingness-to-pay to avoid a
marginal increase in the risk of a fatality
or injury, as explained below. In
addition, in this FEA, OSHA updated
the estimated monetary value of
reductions in fatalities and injuries
presented in the PEA from 2002 to 2009
dollars. While a willingness-to-pay
(WTP) approach clearly has theoretical
merit, an individual’s willingness to pay
to reduce the risk of fatality may
underestimate the total willingness to
pay, which could include the
willingness of others—particularly the
immediate family—to pay to reduce that
individual’s risk of fatality.47
For estimates using the willingnessto-pay concept, OSHA relied on existing
studies of the imputed value of fatalities
avoided based on the theory of
compensating wage differentials in the
labor market. These studies rely on
certain critical assumptions for their
accuracy, particularly that workers
understand the risks to which they are
exposed and that workers have
legitimate choices between high- and
low-risk jobs. These assumptions are far
from realized in actual labor markets.48
A number of academic studies, as
summarized in Viscusi & Aldy (2003),
show a correlation between higher job
risk and higher wages, suggesting that
employees demand monetary
compensation in return for a greater risk
of injury or fatality. The estimated tradeoff between lower wages and marginal
reductions in fatal occupational risk—
that is, workers’ willingness to pay for
marginal reductions in such risk—yields
an imputed value of an avoided fatality:
The willingness-to-pay amount for a
reduction in risk divided by the
reduction in risk.49 OSHA used this
approach in many recent proposed and
final rules. (See, for example, 69 FR
59305, 59429 (Oct. 4, 2004) and 71 FR
47 See, for example, Thaler and Rosen (1976), pp.
265–266; Sunstein (2004), p. 433; or Viscusi, Magat
and Forrest (1988), the last of whom write that
benefits from improvement in public health
‘‘consist of two components, the private valuation
consumers attach to their own health, plus the
altruistic valuation other members of society place
on their health.’’ This paper uses contingent
valuation methods to suggest that the effect of
altruism could significantly alter willingness-to pay
estimates for some kinds of health improvement.
There are, however, many questions concerning
how to measure this and the conditions under
which it might matter.
48 See, for example, the discussion of wage
compensation for risk for union versus nonunion
workers in Dorman and Hagstrom (1998).
49 For example, if workers are willing to pay $90
each for a 1⁄100,000 reduction in the probability of
dying on the job, then the imputed value of an
avoided fatality would be $90 divided by 1⁄100,000,
or $9,000,000. Another way to consider this result
would be to assume that 100,000 workers made this
trade-off. On average, one life would be saved at a
cost of $9,000,000.
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10099 (Feb. 28, 2006), the preambles for
the proposed and final hexavalent
chromium rule, and 78 FR 56274, 56388
(Sept. 12, 2013), the preamble for the
proposed respirable crystalline silica
rule.) The Agency views the WTP
approach as the best available, and
relied on it to monetize benefits. Viscusi
& Aldy (2003) conducted a metaanalysis of studies in the economics
literature that use a willingness-to-pay
methodology to estimate the imputed
value of life-saving programs and found
that each fatality avoided valued at
approximately $7 million in 2000
dollars. Using the GDP Deflator (U.S.
BEA, 2010), this $7 million base number
in 2000 dollars yields an estimate of
$8.7 million in 2010 dollars for each
fatality avoided.50 51
OSHA views these estimates as the
best estimates currently available, and
will use them to monetize avoided
fatalities and injuries resulting from this
final standard.
Net Benefits
Table IV–11, which repeats Table IV–
1 for the convenience of the reader,
provides a summary of the estimated
costs, benefits, and net benefits of the
final standard, using discount rates of 7
percent and, alternatively, 3 percent, as
recommended by OMB Circular A–4.
OSHA estimated the total benefits of the
final standard to be $93.6 million
annually—of which $45.2 million come
from prevented fatalities and $48.4
million from prevented injuries. OSHA
took the annualized costs of $60.3
million, using a 7 percent discount rate,
from Table IV–13 in Chapter 6 of this
FEA. OSHA estimated net benefits of
the final rule to be $33.3 million
annually, using a 7 percent discount
rate. OSHA estimated that compliance
with the final standard will provide
$1.55 of benefits per dollar of cost.
TABLE IV–11—NET BENEFITS
[Millions of 2009 dollars]
7% Discount
rate
3% Discount
rate
Annualized Costs
Evaluation, Classification, Information Exchange, and Notification ........................................................................
Written Program, Issue Permits, Verify Safety, Review Procedures ......................................................................
Provide Ventilation and Isolate Hazards .................................................................................................................
Early Warning System and Atmospheric Testing or Monitoring .............................................................................
Attendant ..................................................................................................................................................................
Rescue Capability ....................................................................................................................................................
Training Provisions ..................................................................................................................................................
Other Requirements ................................................................................................................................................
$12.4
4.2
2.8
11.4
3.6
8.2
11.3
6.4
$12.2
4.2
2.7
11.3
3.6
7.6
11.3
6.3
Total Annual Costs ...........................................................................................................................................
60.3
59.2
Annual Benefits
Number of Injuries Prevented ..................................................................................................................................
Number of Fatalities Prevented ...............................................................................................................................
Monetized Benefits ..................................................................................................................................................
780
5.2
$93.6
Net Annual Monetized Benefits
(Benefits Less Costs)
$33.3
As indicated in Table IV–11, the
estimated benefits of the final standard
are nearly 50 percent larger than the
estimated costs. Nevertheless, it is
possible that the costs of particular
provisions could exceed their benefits.
To address this possibility, OSHA
conducted a supplemental analysis of
the net benefits of the individual
provisions of the final rule that have
associated costs.
Because the final rule contains jointly
interacting and overlapping provisions,
there are two logistical issues with
performing a provision-by-provision
sensitivity analysis of whether benefits
exceed costs in this case: (1) The
available data do not permit OSHA to
determine the numbers of accidents that
every combination of provisions could
prevent; and (2) a simple marginal
analysis will not fully address the
question of whether benefits exceed
costs for the rule as a whole. It might,
for example, take two or more
provisions to prevent a class of accident:
An analysis of the effects of a
requirement to do x if situation y is the
case would be dependent on not only
the requirement to do x if situation y is
the case, but also a requirement to train
workers to do x, as well as a
requirement to inform workers of when
y is the case. In such circumstances,
while each provision alone might pass
a marginal benefit-cost test, all of the
provisions together might not pass a
benefit-cost test because the provisions
would prevent the same accidents. The
three provisions, each costing $5
million (for a total cost of $15 million),
might prevent only $12 million worth of
accidents because the three provisions
would prevent the exact same accidents.
Thus, even if a provision-by-provision
sensitivity analysis were possible for
50 The Agency notes that two recent studies
mentioned in this chapter—Kniesner et al. (2010)
and Kniesner et al. (2012)—report similar estimates.
The median quintile estimate of the imputed value
of an avoided fatality in Kniesner et al. (2010) is
$9.2 million in 2010 dollars, while Kniesner et al.
(2012) provide a range of estimates between
approximately $5 million and $12 million in 2012
dollars. For the purpose of this PEA, OSHA chose
to rely on the Viscusi and Aldy (2003) metaanalysis rather than the two more recent individual
studies.
51 An alternative approach to valuing an avoided
fatality is to monetize, for each year added to a life,
an estimate from the economics literature of the
value of that statistical life-year (VSLY). See, for
instance, Aldy and Viscusi (2007) for a discussion
of VSLY theory and FDA (2003), pp. 41488–9, for
an application of VSLY in rulemaking. OSHA did
not investigate this approach.
Potential Net Benefits of the Individual
Provisions of the Rule
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this rule, that analysis might still not
demonstrate the total benefits of the
overall combination of provisions.
Moreover, for the purpose of
determining whether benefits of a rule
exceed the costs, one cannot simply test
each provision individually, but must
find ways to examine situations
involving likely joint effects of the
provisions of the rule.
This provision-by-provision analysis
addresses both of these problems and
takes the form of a break-even
sensitivity analysis that compares the
potential benefits of a set of provisions
against the costs of those provisions
and, separately, all provisions that,
when combined, achieve those
particular benefits. Thus, a break-even
sensitivity analysis in this case
represents an estimate of the percentage
of potentially preventable accidents that
an individual provision, or a
combination of provisions, must prevent
for the benefits to equal the costs. Any
percentage of preventable accidents a
provision or combination of provisions
prevents that are greater than this
percentage would result in benefits
exceeding costs.
For each narrative of the 30
preventable confined-spaces-inconstruction fatalities and injuries for
the period 2006–2009 presented in
Table IV–10, OSHA listed the sets of
provisions of the final rule that, if
followed, would potentially prevent the
fatalities. For some provisions, such as
requirements to evaluate and classify
spaces and to develop and implement
permit systems, the narratives do not
clearly state whether or not employers
met these requirements. In these cases,
OSHA listed those provisions as being
among those that would potentially
prevent the fatality, even though it is
possible that the employer took steps to
implement the required provisions. For
other provisions, such as those for early
warning system and atmospheric testing
or monitoring, the narratives do not
clearly state that there was such
monitoring, but it seems unlikely that
someone would enter some of these
extremely dangerous atmospheres had
information on that danger been
available as a result of an early warning
system and atmospheric testing or
monitoring. Finally, it is clear from the
descriptions that employers simply did
not follow provisions relating to
ventilation and hazard isolation. Table
IV–12 shows the aggregate results for
each set of provisions organized
according to the organization of costs
provided in Chapter 5. Table IV–12 then
monetizes the prevented fatalities and
injuries associated with each cost
category and compares that monetized
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total to the estimated costs for each cost
category. Finally, OSHA estimated the
percentage of benefits that a given
provision needs to produce zero net
benefits (that is, when the estimated
value of the prevented injuries and
fatalities equals the estimated cost of the
related provision). Any percentage
greater than zero net benefits will
produce positive net benefits. Table IV–
12 also shows the results of this
analysis.
Before examining the benefits
attributable to the provisions of the final
standard, OSHA examined the breakeven sensitivity of the standard as a
whole and found that if compliance
with the standard prevented 45 percent
of the fatalities recorded, then the
benefits would equal the costs; with any
higher percentage prevention, benefits
would exceed the costs. OSHA
considers it a near certainty that
compliance with the final standard
would achieve this level of benefits. For
example, full compliance with the final
standard would avoid almost all
fatalities involving asphyxiation, and 60
percent of the accidents involved
asphyxiation. Thus, if full compliance
with the final standard prevents just one
class of accidents, the standard would
result in benefits that exceed costs.
To discuss the results shown in Table
IV–12, OSHA will consider the results
for each provision in turn, as described
in the following paragraphs.
Evaluation and Classification: The
portions of the standard covered by this
cost category are only effective if
combined with other measures.
Evaluation and classification alone,
without taking the further steps needed
to ameliorate the hazards, would be
largely pointless. The need for this
provision, in the context of benefit-cost
analysis, is to assure that employers do
not have to treat every confined space
as containing hazards; rather, it allows
employers to simply restrict entry or to
implement the subsequent parts of their
confined-spaces program only when a
hazard exists within a given confined
space.
This set of provisions is critical to
reducing the costs of all other
provisions more than directly
preventing fatalities. If the evaluation
and classification provisions reduce the
costs of the standard as a whole by 5
percent ($3.1 million costs of this
provision divided by $60.3 million costs
of the remaining provisions), then these
provisions will be useful. Given the vast
number of confined spaces that do not
require the ensuing steps, these
provisions are almost certainly cost
effective, and are necessary given the
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25485
standard as a whole has positive net
benefits—as was shown above.
To further evaluate the necessity and
benefit of the evaluation and
classification provisions, it is necessary
to examine state programs. Only two of
the accidents examined from 1992–2000
and 2006–2009 occurred in states with
comprehensive programs similar to
what OSHA is proposing. Five accidents
occurred in states that required some
provisions included in OSHA’s
confined-spaces-in-construction rule,
such as ventilation and atmospheric
monitoring, but did not require
evaluation or permit systems. This
result may suggest that there may be
advantages to a full, comprehensive
program that explicitly requires
evaluation and classification. However,
OSHA has not been able to do any
quantitative analysis of the rates of
confined space fatalities in these states
as against other regulatory regimes.
Information Exchange: The exact
economic benefits of information
exchanges are particularly difficult to
pinpoint. Nevertheless, the benefits of
these provisions will exceed the cost if
the final standard prevents 10 percent of
the potentially affected accidents.
Permit Programs: Table IV–12 shows
that if these provisions prevent 4
percent of the accidents where they are
potentially relevant, then the benefits
will equal the costs, and if they prevent
more than 4 percent, the benefits will
exceed the costs. A system of permits
might prevent, or have been a key part
of preventing, many fatalities. As a
result, achieving a 4 percent prevention
rate seems reasonable. Further, at least
12 percent of the accidents potentially
prevented by this provision (Incidents 2
and 13) involved casual entry (e.g., to
retrieve a dropped item), or entry prior
to testing, that a proper permit system
would completely prevent. Preventing
these two accidents alone would assure
that the benefits of the provision exceed
the costs.
Early Warning Systems, and
Atmospheric Testing and Monitoring:
Early warning systems, and atmospheric
testing and monitoring, can prevent
accidents that result in asphyxiation or
caused by explosive gases, or where
early warning of oncoming liquids
would prevent drowning. The presence
of atmospheric testing or monitoring
data would prevent most of these
accidents because it is unlikely that
anyone would knowingly enter a space
with a lethal or explosive atmosphere,
especially when provisions are in place
to assure against unauthorized entry.
Table IV–12 shows that if these
provisions prevent 14 percent of the
accidents for which they are potentially
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relevant, then the benefits will equal the
costs, and if they prevent more than 14
percent of the accident, the benefits will
exceed the costs. OSHA believes that it
is likely that atmospheric monitoring
could prevent a much higher percentage
of these accidents. In addition, there is
one accident potentially prevented by
an early warning system.
Requirement for an Attendant: This
heading includes the provisions that
require an attendant whenever an
employee enters a permit-required
confined space, such as §§ 1926.1204(f),
1926.1209(f) and 1926.1209(h). These
provisions function in conjunction with
the requirements for adequate rescue
capacity. In the absence of appropriate
rescue capacity, persons standing by a
confined space may attempt a rescue
that exposes them to the hazard. Table
IV–12 shows that if these provisions
prevent 6 percent of the accidents in
which the person who died entered a
confined space completely alone, then
the benefits will equal the costs, and if
the provisions prevent more than 6
percent of the accidents, the benefits
will exceed the costs. OSHA believes
that it is reasonable that appropriately
trained and equipped attendants could
prevent this percentage of accidents.
Ventilation and Hazard Isolation: The
standard generally requires the use of
ventilation when possible to address
atmospheric hazards, but it can be
difficult for the purposes of this
sensitivity analysis to determine in
which situations ventilation, rather than
PPE, might be sufficient. It is clear,
however, that when ventilation is
appropriate, assuring its effectiveness
would completely prevent ventilationrelated fatalities. The same is true for
hazard-isolation methods such as
deactivating and locking out electrical
sources and creating by-passes for water
around confined spaces. Table IV–12
shows that if these provisions prevent 3
percent of the accidents for which they
are potentially relevant, then the
benefits will equal the costs, and if they
prevent more than 3 percent of these
accidents, the benefits will exceed the
costs. Therefore, even if proper
ventilation or isolation prevented one in
five of the fatalities identified as
potentially avoidable with proper
ventilation or isolation, then the
benefits of these provisions would
exceed the costs. While the exact
number of situations in which
ventilation or isolation would have been
the hazard-reducing measure of choice
is uncertain, OSHA is confident that at
least 3 percent of those identified would
require ventilation or isolation.
Rescue Capacity: These provisions
include all requirements related to
rescue, including the requirement for
non-entry rescue whenever feasible.
Table IV–12 shows that if these
provisions prevent 9 percent of the
accidents for which they are potentially
relevant, then the benefits will equal the
costs, and if they prevent more than 9
percent of the accidents, the benefits
will exceed the costs. Given that 15
percent of the accidents for which
OSHA identified inadequate rescue
capacity as a factor in a fatality involved
deaths of additional workers during an
attempted rescue, then following
provisions for non-entry rescue would
reasonably prevent more than 9 percent
of all accidents involving inadequate
rescue capacity. However, if employers
follow all other provisions of the rule,
then there will be less need for rescue.
As a result, this set of provisions will be
necessary if other provisions are not
available or are not followed 9 percent
of the time, or if conditions change after
the confined-space entry in ways that
result in a need for rescue.
Equipment: These provisions cover
the requirement that employers provide
adequate lighting and other equipment
needed for confined-spaces work as
specified in § 1926.1204(d). Table IV–12
shows that if these provisions prevent
47 percent of the accidents for which
they are potentially relevant, then the
benefits will equal the costs, and if they
prevent more than 47 percent of the
accidents, the benefits will exceed the
costs. However, as noted above, OSHA
did not include many of the accidents
that proper equipment would prevent,
such as accidents caused by vehicles
hitting persons working near a confined
space or illnesses caused by improper
clothing. As a result, it is likely that
OSHA underestimated the number of
fatalities and injuries prevented by
proper equipment.
TABLE IV–12—COMPARISON OF BENEFITS ASSOCIATED WITH INDIVIDUAL COST CATEGORIES AND COSTS *
Cost provision
Number of
fatalities
potentially
affected by
provision
(2006–
2009)
Estimated
number of
fatalities
per year
potentially
affected by
provision
30
30
18
22
7.5
7.5
4.5
5.5
$65,250,000
65,250,000
39,150,000
47,850,000
1125
1125
675
825
$69,750,000
69,750,000
41,850,000
51,150,000
$135,000,000
135,000,000
81,000,000
99,000,000
$60,300,000
3,100,000
9,300,000
4,200,000
45
2
11
4
18
22
13
20
29
3
4.5
5.5
3.25
5
7.25
0.75
39,150,000
47,850,000
28,275,000
43,500,000
63,075,000
4,350,000
675
487.5
487.5
750
1087.5
112.5
41,850,000
51,500,000
30,225,000
46,500,000
67,425,000
6,975,000
81,000,000
99,000,000
58,500,000
90,000,000
130,500,000
13,500,000
11,300,000
2,800,000
3,600,000
8,200,000
11,300,000
6,3000,000
14
3
6
9
9
47
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All ..................................................
Evaluation and Classification ........
Information Exchange ...................
Permit System ...............................
Early Warning System and Atmospheric Testing or Monitoring ......
Ventilation and Hazard Isolation ...
Attendant .......................................
Rescue Capability .........................
Training .........................................
Equipment .....................................
Monetized
value of
annual
fatalities a
Estimated
number of
injuries
per year
potentially
affected by
provision
Monetized
value of
injuries b
Total monetized value of
annual fatalities and
injuries potentially
affected by
the provision
Costs of
provision
Percentage
of potential
benefits
needed to
break even
with costs c
(percent)
* In 2009 dollars.
a Based on an estimated value of $8.7 million per fatality avoided.
b Based on an estimated value of $62,000 per injury avoided.
c Costs of provision divided by total monetized value of fatalities potentially prevented by the provision.
* Note: OSHA did not apportion the benefits of a prevented fatality among the provisions that could prevent the fatality; instead, the Agency attributed the entirety of
the benefits of a prevented fatality to each provision that could prevent the fatality.
Source: OSHA, Directorate of Standards and Guidance, Office of Regulatory Analysis.
5. Technological Feasibility
In accordance with the OSH Act,
OSHA must demonstrate that
occupational safety and health
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standards promulgated by the Agency
are technologically feasible. OSHA
demonstrates that a standard is
technologically feasible ‘‘by pointing to
technology that is either already in use
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or has been conceived and is reasonably
capable of experimental refinement and
distribution within the standards
deadlines.’’ American Iron and Steel
Inst. v. OSHA (Lead II), 939 F.2d 975,
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980 (D.C. Cir. 1991) (per curiam)
(internal citation omitted). OSHA
reviewed each of the requirements
imposed by the final rule and
determined that compliance with the
requirements of the rule is
technologically feasible for all affected
industries, that employers can achieve
compliance with all of the final
requirements using readily and widely
available technologies, and that there
are no technological constraints
associated with compliance with any of
the final requirements.
Several factors support OSHA’s
determination regarding the
technological feasibility of the final rule.
First, OSHA concluded that compliance
with existing § 1910.146 was
technologically feasible when it
promulgated those standards in 1993
(58 FR 4539), and that conclusion held
true over OSHA’s two decades of
experience with that standard. Likewise,
this conclusion holds true with respect
to provisions in the final rule that
OSHA based on the existing general
industry standard. A number of
commenters stated that they are
complying with the general industry
standard in construction operations,
which also supports a finding of
technological feasibility. (See e.g., ID–
047, –075, –086, –092, –120, –124,
–180).
Second, the provisions in the
standard not based on the existing
standard are also technologically
feasible. The new standard requires
employers to identify confined spaces at
their worksites, establish a written
program and issue permits for
qualifying confined spaces, exchange
information on the hazards of permit
spaces with other affected employers,
train affected employees, provide for
rescue and emergency services, and
assign duties to authorized entrants,
attendants, and supervisors. None of
these requirements, including the new
requirements not in § 1910.146, present
any technological feasibility concerns.
These provisions simply require
observation of hazards, training, and
communication among all parties,
including employees and all employers
at a worksite—all of which are clearly
feasible.
In Section III of the preamble to the
final rule, ‘‘Summary and Explanation
of the Final Rule,’’ OSHA responded to
issues associated with the technological
feasibility of specific provisions. In that
section of the preamble, OSHA
discussed technological feasibility
concerns raised by rulemaking
participants and the technological
feasibility of provisions that differ from
the general industry rule, including the
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requirement for continuous monitoring
of atmospheric hazards in final
§ 1926.1203(e)(2)(vi) and
§ 1926.1204(e)(1)(ii). In addressing
potential concerns about the
technological feasibility of continuous
monitors that would be capable of
identifying various types of atmospheric
hazards, OSHA included an exception
that applies if the employer can
demonstrate that the appropriate
devices are not commercially available
for this purpose.
One commenter suggested that
requirements to exchange information
and coordinate entry operations
represent ‘‘an unnecessary burden’’ and
‘‘in some cases may be infeasible,’’
which OSHA takes to mean
technologically infeasible, for the
homebuilding industry (ID–124).
Although this commenter cited industry
statistics indicating that homebuilders
tend to be small businesses that rely on
subcontractors to handle specialized
tasks, the commenter failed to show
how this situation renders multiemployer communication requirements
of the rule technologically infeasible for
that industry. OSHA does not mandate
any particular equipment for
coordinating communications, and the
Agency did not find evidence in the
record suggesting that the exchange of
information and entry coordination,
which OSHA believes already occurs in
the course of regular communications
conducted by employers on
construction worksites, is infeasible. At
a time when most individuals have
mobile phones, remote communication
should be possible in most locations. In
any case, in construction work, homebuilding contractors are able to
successfully communicate with a
variety of specialists about what work
needs to be done and at what time.
Therefore, there should be no feasibility
problems in communicating essential
safety information in the same way.
There was only one other provision of
the proposed standard that elicited
concerns from industry stakeholders
about technological feasibility. That
provision, which appears as
§ 1926.1204(e)(1)(iii) of the final
standard, requires that employers
provide an early warning system that
will detect non-isolated engulfment
hazards as a part of the permit-required
confined space program. Such hazards
can result, for example, when runoff
from a heavy storm upstream in a sewer
flows downstream into the work area.
As noted in the IMIS reports, an
employee died in 2009 when a
rainstorm sent water rushing into a 24inch pipe inside which the employee
was working. Other examples would be
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if sewage, sand, grain, or other
‘‘flowable’’ solid substances flow into
the area in which an employee is
working.
Two commenters questioned the
availability of early warning system
technology (ID–059 and –098). A third
commenter (ID–216) raised similar
objections and, in particular, expressed
concerns about the technical demands
imposed on the employer to account for
all of the factors involved in properly
positioning the system.
In response to these comments, OSHA
observes that manufacturers have
designed early warning systems for
years to alert workers to migrating
engulfment hazards, including
migrating engulfment hazards present in
a space subject to final § 1926.1204(e)(1)
(see, for example, https://
www.memecosales.com/products/level/
blok-aid/ or https://www.flygt.com/enus/Pumping/Products/Monitoring-andControl-equipment/Pages/Alarmtelemetry.aspx). The range of available
early warning systems runs from
customized high-flow warning devices
to simple fluid-level meters with
audible alarms. The wide availability
and application of such systems attest to
their affordability and practicability
under a range of circumstances. OSHA
also notes that, in a series of stakeholder
meetings in October 2000, various
participants discussed the range of early
warning systems, including monitors,
cameras, and attendants positioned
upstream outside confined spaces (see
transcripts of stakeholder meetings,
available at https://www.osha.gov/doc/
reference_documents.html). The
commenters generally characterized the
systems as easy to implement and
commonly used.
Even though this technology is clearly
available, the standard does not require
employers to use a device such as the
early warning system. An employer may
determine that an effective compliance
solution would simply be to position
detection and monitoring devices to
provide early warning, or to station an
employee to accomplish that function.
In any case, given the option of using an
employee to provide direct observation
as one potential method of fulfilling the
requirement, there is no doubt that the
requirement may be accomplished with
existing technology.
In conclusion, employers can achieve
compliance with all of the requirements
of the final standard with readily and
widely available technologies or
through the use of human observers. To
demonstrate technological feasibility,
OSHA must establish a ‘‘reasonable
possibility that the typical firm will be
able to . . . meet the [standard’s
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requirement] in most of its operations.’’
Lead II, 939 F.2d at 980 (internal
citation omitted). Given the wide
availability of options for early warning
systems, the final rule meets this legal
test.
6. Costs of Compliance
Introduction
In this chapter, OSHA presents the
estimated costs of the final rule for
confined spaces in construction. These
are the costs that employers would
incur to achieve full compliance with
the final rule, relative to the current
baseline. They do not include costs
employers incurred to achieve current
compliance with the existing
requirements.
Table IV–13 presents OSHA’s
estimate of the total annualized costs of
the final rule by provision and by
industry sector, expressed in 2009
dollars. As OSHA typically does, it
annualized capital costs over the
estimated useful life of the equipment,
and annualized one-time costs over 10
years. Consistent with OMB’s Circular
A–4 (OMB, 2003), OSHA calculated
annualized costs using two alternative
discount rates: 7 Percent and 3 percent.
As shown, OSHA estimated the total
annualized cost of the final rule to be
about $60.3 million using a discount
rate of 7 percent, and $59.2 million
using a discount rate of 3 percent.
TABLE IV–13—ANNUALIZED COMPLIANCE COSTS OF OSHA’S FINAL STANDARD FOR CONFINED SPACES IN
CONSTRUCTION, BY PROVISION
Provision or hazard control
7 Percent rate
3 Percent rate
Evaluation, Classification, and Notification ..............................................................................................................
Classify .............................................................................................................................................................
Notice ................................................................................................................................................................
Information Exchange .......................................................................................................................................
Issue Permits, Verify Safety, Review Procedures ...................................................................................................
Annual Review ..................................................................................................................................................
Issue Permits ....................................................................................................................................................
Written Program ...............................................................................................................................................
Ventilation and Hazard Isolation ..............................................................................................................................
Isolation ............................................................................................................................................................
Vent ..................................................................................................................................................................
Atmospheric Monitoring ...........................................................................................................................................
Test Prior/During ..............................................................................................................................................
Calibrate ...........................................................................................................................................................
Standby Person .......................................................................................................................................................
Rescue Capability ....................................................................................................................................................
Rescue ..............................................................................................................................................................
Retrieval ............................................................................................................................................................
Training ....................................................................................................................................................................
Training .............................................................................................................................................................
Supervisor Training ..........................................................................................................................................
Other Requirements ................................................................................................................................................
Clothing .............................................................................................................................................................
Barriers .............................................................................................................................................................
Communication Equipment ..............................................................................................................................
Lighting .............................................................................................................................................................
Alarms ...............................................................................................................................................................
$12,363,600
948,249
2,091,862
9,323,489
4,196,574
154,746
2,710,594
1,331,234
2,830,611
784,364
2,046,247
11,395,322
10,661,160
734,162
3,623,866
8,157,084
5,745,876
2,411,208
11,340,155
5,696,017
5,644,139
6,402,728
2,744,697
2,801,408
624,044
183,363
61,252
$12,208,018
948,249
1,936,279
9,323,489
4,190,373
154,746
2,710,594
1,325,033
2,748,652
771,079
1,977,573
11,282,168
10,551,394
730,773
3,623,866
7,576,244
5,379,002
2,197,241
11,296,556
5,676,653
5,619,903
6,269,690
2,744,697
2,723,063
584,200
171,656
57,644
Total Compliance Costs ............................................................................................................................
60,321,976
59,207,135
Source: U.S. Department of Labor, OSHA, Directorate of Standards and Guidance, Office of Regulatory Analysis-Safety.
Where TC = Total Cost, k subscripts each cost
category, j subscripts each industry type,
i subscripts the project size, NP is the
number of projects in that size category,
NC is the current non-compliance rate, H
is the number of hours, and UC is the
unit cost.
Using a discount rate of 7 percent,
OSHA estimates that the annualized
compliance costs for the major
provisions of the final standard are as
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follows: Evaluation and classification of
enclosed spaces, information exchange,
and notification ($12.4 million);
developing and reviewing written
programs, issuing entry permits, and
verifying the safety of confined spaces
($4.2 million); isolating hazards and
providing sufficient ventilation ($2.8
million); conducting atmospheric
monitoring ($11.4 million); having an
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attendant ($3.6 million); planning and
providing rescue capability ($8.2
million); providing training ($11.3
million); and other requirements ($6.4
million).
Estimating Compliance Costs
The approach to compliance-cost
estimation in this FEA follows the
approach in the PEA and in the
CONSAD analysis. However, the cost
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The structure of the equations which
calculate the costs is the following
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estimates in this FEA changed relative
to the PEA to reflect changing
construction practices over time,
changes from the proposed to the final
rule (including more closely aligning
the final rule with the confined-spaces
rule for general industry), and OSHA’s
responses to comments on the proposal
and on the PEA.
For each type of construction activity
identified by the CONSAD expert panel,
OSHA took an estimate of the total
number of construction projects from
the F.W. Dodge data (the same source
used for the PEA) and applied a
category-specific number of confined
spaces per project to derive the number
of confined spaces. OSHA then used the
number of confined spaces along with
other pertinent estimates to determine
the number of affected workers, and
applied unit-cost estimates to calculate
the costs of each provision of the
standard, taking into account current
compliance. OSHA derived many of the
costs of this final rule by multiplying
hourly wages by the labor hours
required to fulfill a given requirement.
As previously noted, OSHA annualized
equipment purchase costs based on the
estimated useful life of the equipment,
and annualized one-time expenditures
over a 10-year period.
AGCA presented an alternative
economic analysis, prepared by Dr.
Helvacian, of the compliance costs of
the proposed rule, stating that the
analysis in the PEA ‘‘must be updated
for the most recent data on
establishments, employees, wages and
benefits, and for prices for construction
machinery and equipment’’ (ID–222). In
this FEA, OSHA updated its analysis of
compliance costs to reflect more recent
data, when these data were available.
Specifically, to account for changes in
wages and prices over time, OSHA
updated the wages and capital and
equipment costs presented in the PEA to
2009 dollars based on the percentage
change in the GDP price deflator from
2002 to 2009, published by the U.S.
Commerce Department, Bureau of
Economic Analysis.52 Dr. Helvacian’s
economic analysis was based partially
on a survey of AGCA’s member
employers. The survey respondents
have an average of 98.8 confined spaces
per job, with a median of 3 spaces per
job. This large disparity between the
average and the median suggests the
possibility that there was widespread
misunderstanding among the
respondents regarding what constitutes
a confined space. By comparison, the
average number of confined spaces per
52 Source:
https://www.bea.gov/iTable/iTable.cfm?
ReqID=9&step=1#reqid=9&step=3&isuri=1&903=13.
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project based on the CONSAD report is
5.7, with an average of 193 entries per
project.53 OSHA believes that it would
be unsound to extrapolate the
commenter’s survey results, based on
only 74 respondents and 5 categories of
construction projects, to the entire
construction industry. In contrast,
CONSAD based its estimates on results
stratified by 25 project categories
organized by project size. Furthermore,
OSHA notes that adjusting the estimated
average number of confined spaces and
entries to reflect the commenter’s
reported median estimate would reduce
OSHA’s estimated compliance costs.
OSHA chooses not to adopt the
commenter’s estimated number of
confined spaces. OSHA believes that the
research conducted by CONSAD
continues to provide detailed
information that is not available
elsewhere (for example, information
related to entries into confined spaces
and the distribution of confined spaces
across construction projects). Therefore,
OSHA finds that the CONSAD report,
with appropriate updates and
adjustments for the changing rule
provisions and industry practices,
provides the best available data related
to entries into confined spaces in
construction, and continues to rely on
data published in that report to estimate
compliance costs.
Dr. Helvacian’s analysis also
suggested that the number of hours
required to comply with the proposed
rule was greater than that estimated in
the PEA (ID–222). However, although
the report provided some aggregate time
estimates, they were not sufficiently
detailed for OSHA to analyze the
estimates by specific requirements.
Furthermore, OSHA notes that Dr.
Helvacian based the survey results on
the AGCA members’ understanding of
the proposed rule rather than the final
rule, which the survey’s introduction
described as ‘‘complicated, costly to
implement, and does not provide
significant increases in safety above the
existing general industry standard’’ (ID–
222). For these reasons, OSHA is not
adjusting its time estimates based on the
AGCA survey results.
OSHA received a number of
comments stating that many
construction contractors were already
complying with the general industry
standard. For example, an association of
utility contractors commented that its
members ‘‘enter into confined spaces on
a regular basis in the course of their
construction operations. They have been
53 This estimate excludes single-family housing
projects. OSHA added these projects to the analysis
in this FEA.
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using the General Industry Standard (29
CFR 1926.146) since it was issued in
1993 and have customized their
confined space programs and training to
comply with that standard’’ (ID–075).
Another commenter, a constructionsafety consultant, stated that employers
were already complying with a state
standard on confined spaces, which the
state based on OSHA’s general industry
standard (ID–047). Tom Skaggs,
representing the Mechanical Contractors
Association of America, testified that
the industry was successfully protecting
workers ‘‘through voluntary compliance
with OSHA’s general industry standard’’
(ID–210, Tr. p. 278; see also ID–180 for
his written testimony). Other
commenters also stated that much of the
construction industry adheres to the
general industry standard (e.g., ID–086,
–092, –120, –124).
Based on these comments, and in
light of the changes from the proposed
rule to the final rule that more closely
align the final rule with the general
industry rule, OSHA revised its
estimated rates of current industry
compliance upward in this FEA for
many of the provisions of the final rule.
Table IV–6, introduced earlier in
Chapter 3 of this FEA, presents these
revised compliance rates. Because the
final rule requirements concerning
information exchange, continuous
monitoring, and early warning systems
and rescue vary from the general
industry rule, the Agency did not adjust
the estimated compliance rates related
to these provisions in this FEA.
To adjust compliance rates, OSHA
used information on state confinedspace standards for construction. The
states that have confined space
standards for construction are:
California, Kentucky, Maryland,
Michigan, Minnesota, Virginia,
Washington, and Alaska. These eight
states have different confined-space
requirements that comply with some or
all of the OSHA requirements in the
final rule, depending on the state.
OSHA assumed that the original
CONSAD compliance rate would be
applicable in states without state
standards, and assumed full compliance
with the provisions of the standards
specific to each of these eight states. The
content of the state construction
standards varies by state, so OSHA
calculated weighted average compliance
rates for each provision of the standard
based on the proportion of
establishments in each state having that
provision. As the record shows, this
approach may underestimate the actual
compliance rates since many
construction employers have come into
compliance with the general industry
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standard, and, therefore, with
provisions of this final rule, whether or
not they are located in the states with
confined-space standards for
construction. These employers come
into compliance with the general
industry standard because, in part, they
perform both general industry and
construction work. OSHA also modified
some compliance rates from the
CONSAD report to account for large
projects having greater compliance rates
than smaller projects within the same
activity type.
Table IV–14 presents the estimated
unit costs associated with each
requirement in the final rule. Following
this table is a discussion of OSHA’s
estimated compliance costs by
requirement.
TABLE IV–14—UNIT-COST ESTIMATES FOR CONTROLS NECESSARY TO ACHIEVE COMPLIANCE WITH THE FINAL STANDARD
Activity or equipment
Unit cost/useful life
Construction supervisor wage (including benefits) ..................................
Skilled worker wage (including benefits) ..................................................
General construction employee wage (including benefits) ......................
Clerical employee wage (including benefits) ............................................
Unskilled worker wage (including benefits) ..............................................
Confined-space notification signs .............................................................
Host employer/controlling contractor information exchange ....................
Controlling contractor/entry employer information exchange ...................
Controlling contractor/other worksite employer information exchange ....
Entry coordination .....................................................................................
Written program ........................................................................................
Issue permits/maintain records/review procedures ..................................
$42.16 per hour.
$29.60 per hour.
$24.93 per hour.
$22.53 per hour.
$22.67 per hour.
$18.92/5 years.
8 minutes of supervisor time.
20 minutes of supervisor time for each entity involved.
5 minutes of supervisor time for 10 percent of employers.
10 minutes of supervisor time for 3 supervisors per coordinated entry.
1 hour per project.
10 minutes of supervisor time and 5 minutes of clerical time per permit
issued.
5 minutes of supervisor time and 5 minutes of clerical time per nonpermitted space entry.
5 minutes skilled employee time.
Implement and verify alternative entry procedures ..................................
Time to isolate a hazard (e.g., with double block and bleed method,
lockout/tagout system, etc.).
Lock ..........................................................................................................
Tag ............................................................................................................
Portable ventilation system ......................................................................
Operation and maintenance costs for ventilation system ........................
Set up ventilation system .........................................................................
Ventilate confined space prior to entry ....................................................
Set up atmospheric monitoring equipment ..............................................
Atmospheric-monitoring equipment (three-gas monitor) ..........................
Atmospheric-monitor calibration test ........................................................
Attendant ..................................................................................................
Establish rescue procedures ....................................................................
Entry rescue equipment ...........................................................................
Non-entry rescue equipment ....................................................................
Rescue team training ...............................................................................
Training for entrants and attendants ........................................................
Training program development ................................................................
Disposable coveralls .................................................................................
Traffic barricades (pair) ............................................................................
Barricade tape ..........................................................................................
Sign ...........................................................................................................
Installation of sign or barricade ................................................................
Two-way radios ........................................................................................
Safety lantern for emergency lighting ......................................................
Air horn for emergency evacuation ..........................................................
$13.80/2 years.
$1.61 each.
$1,332/5 years.
Add 10% per year to cost of system.
10 minutes skilled employee time.
45 minutes skilled employee time.
20 minutes skilled employee time per entry.
$1,000/5 years.
1 calibration per 160 hours of use.
1 additional construction employee for duration of entry for anywhere
from 3 hours to 3,400 hours.
1 hour supervisor time per project.
$5,328.56 per set/5 years.
$3,248.54/20 years.
For each team of 4 employees: 16 hours skilled worker time (4 hours
per employee) plus 4 hours supervisor time; plus for 1 employee: 4
hours skilled worker time for CPR training.
Entrants (3–75 workers per project): 0.25 hours construction worker
time; attendants (2–6 workers per project): 0.25 hours construction
worker time; plus 1.5 minutes supervisor time per trained worker and
1.5 minutes clerical time per worker.
4 hours supervisor time plus 1 hour clerical time for program development plus 6 hours supervisor time for training plus 1 hour clerical
time per project.
$8.94 per set.
$165.64/3 years.
$2.12 per 100 feet.
$18.92/5 years.
5 minutes per sign or barricade.
$214.13/3 years.
$19.04/3 years.
$23.79/3 years.
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Sources: Wage data from Bureau of Labor Statistics. Other data from CONSAD report, Tables 6.1, 6.2, D.1, and D.2; and OSHA, Directorate
of Standards and Guidance, Office of Regulatory Analysis-Safety.
Evaluation and Identification,
Information Exchange, and Notification
The proposed standard required
employers to evaluate confined spaces
and their hazards, and to classify them
as one of several types of confined
spaces. In the PEA, OSHA estimated
that compliance with the requirements
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would primarily involve a supervisor’s
time to categorize the confined space
and evaluate its hazards.
Many commenters found the
proposed multiple classification system
for confined spaces unnecessarily
burdensome. One commenter stated that
‘‘[t]he four new classifications . . . will
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require drastic changes to existing
confined space programs at great
financial expense to the construction
industry’’ (ID–124). Another commenter
objected to ‘‘the cost to the contractor
for re-educating employees in the new
terminology,’’ and supported the
continued use of the ‘‘the existing
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process’’ in § 1910.146, the general
industry standard (ID–035).
In contrast to the proposed standard,
the final rule requires employers to
evaluate confined spaces and their
hazards (i.e., determine whether a
workspace is a confined space and
identify the types of hazards that
workers may encounter), and to identify
those confined spaces that are permit
spaces or covered by alternate
procedures. This simplified requirement
mirrors the requirements of OSHA’s
general industry standard for confined
spaces. OSHA estimates that the time
required to evaluate confined spaces as
permit-required spaces would be
substantially less than the time required
to comply with the more complex
proposed classification system, and,
therefore, the Agency estimated an
average time of about 12 minutes to
evaluate a permit space and identify
hazards. OSHA believes this estimate is
appropriate given the many comments
indicating that employers are already
familiar with the general industry rule
and its required classification process.
For example, one commenter, which
surveyed its members about the
proposed standard, reported that
‘‘identifying confined spaces [is]
currently performed as part of normal
business activities,’’ and that ‘‘within
the past 15 years, many contractors have
become accustomed to 29 CFR 1910.146
and have adjusted their safety programs
to comply with this standard’’ (ID–222).
For purposes of estimating the extent
of current compliance, OSHA considers
that projects in compliance with the
proposed requirements to issue entry
permits would also be in compliance
with the final requirements for
evaluating spaces as permit-required or
not. Therefore, OSHA bases its
compliance rates for these provisions on
the compliance rates estimated for the
provisions related to issuing entry
permits. OSHA calculated the annual
compliance cost for evaluating and
classifying confined spaces by
multiplying the supervisor’s hourly
wage rate by the number of hours per
project required to identify and evaluate
confined spaces, which can vary by
project type. OSHA applied this total to
the percentage of projects not already in
compliance and summed across all
projects. Using this approach, OSHA
estimates an annualized cost of about
$948,249 to comply with this
requirement.
For example, to see how OSHA
determined the cost of classification, we
will examine one of the 25 types of
projects: Construction on warehouses.
Within this category there were 130
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small projects, 220 medium projects,
and 23 large projects.
The total cost for the large projects
was derived by taking the number of
projects (23) times the current noncompliance rate (42%) times the
number of hours per project (1.5). This
calculation yields a product of 14.49
hours. Multiplying that number by the
unit cost ($42.16 per hour)—the cost of
an hour of supervisor’s time—yields
$610.90, the cost of classification of
large warehouse construction project
confined spaces.
To determine the total cost of
classification of all permit required
confined spaces, the costs of all types of
projects (small, medium, and large) for
all 25 types of construction, weighted by
each project-cell-types current noncompliance rate, are summed up. A total
of 94 cells are added up to produce the
total cost of classification.
The final rule includes specific
requirements for employers at worksites
with confined spaces to share
information they may have about the
hazards confronting their workers or
other workers. One commenter stated
that ‘‘[i]t is essential to add in the costs
to implement this proposed rule by all
the employers on each construction site
. . . , ’’ and that the ‘‘estimated time
necessary to attend to each confined
space on each construction project by
the proposed controlling contractor is 6
to 8 hours’’ (ID–100). In providing this
estimate, the commenter delineates
several requirements that fall under the
duties of entry employers and host
employers. The commenter correctly
notes the requirement that the
controlling contractor exchange
information with other worksite
employers; however, by counting
requirements for entry employers with
the requirements for controlling
contractors, the commenter overstates
the time burden on controlling
contractors. Another comment, in the
report prepared by Dr. Helvacian, noted
that employers had concerns about the
costs of complying with requirements
for ‘‘information gathering’’ and
‘‘information sharing and coordination’’
(ID–222). Although OSHA believes that
employers on construction sites
currently conduct the information
exchange described in this chapter as
part of their usual and customary
business practices, in this FEA (unlike
in the PEA) the Agency included
estimated costs for informationexchange requirements, as follows.
Under final § 1926.1203(h)(1) and
(h)(2), the host employer and the
controlling contractor must exchange
information about known permit spaces,
such as location, past experiences with
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25491
hazards in the spaces, and other
pertinent information. Neither the host
employer nor the controlling contractor
has to enter the confined spaces to
obtain this information. OSHA estimates
that supervisors for the host employer
and the controlling contractor will
engage in eight minutes of conversation
per project to fulfill this informationexchange requirement.
Under final § 1926.1203(b)(2), (h)(2),
(h)(3), (h)(5), and (i), controlling
contractors and entry employers must
exchange information about permit
spaces and their hazards. They also
must share most of this information
with employee representatives. OSHA
estimates the information exchange
requirement can be fulfilled with an
average of 20 minutes of communication
(one pre-entry and one post-entry
conversation, each lasting 10 minutes)
per project between a supervisor for the
controlling contractor and an entry
employer plus a worker-authorized
representative of that entry employer
Under final § 1926.1203(h)(2), before
entry operations begin, the controlling
contractor must provide information
about the permit-required spaces to
employers with employees whose
activities could foreseeably expose them
to a hazard in the permit-required space.
OSHA expects that employers on a
worksite will not usually have
employees engaged in work that could
foreseeably expose them to such a
hazard. To estimate the cost of
compliance with this provision, OSHA
anticipates that the controlling
contractor’s supervisor will engage in
one 5-minute conversation with 10
percent of all non-entry employers on a
worksite. OSHA calculated the number
of non-entry employers on a worksite
from estimates made by CONSAD of the
number of non-entry workers on
projects, assuming an average employer
size of 20 employees.
Under final § 1926.1203(h)(4), the
controlling contractor must coordinate
entry operations when multiple
employers enter simultaneously or
when an employer makes an entry while
other work performed at the site
(outside the confined space) may result
in a hazard in the confined space. To
obtain the cost of compliance with this
information-exchange provision, OSHA
estimates that the controlling contractor
and two employers will engage in one
10-minute conversation per coordinated
entry. To estimate the number of
coordinated entries, OSHA used
estimates in the CONSAD report on the
number of simultaneous entries per
project. OSHA assumes that all
estimated simultaneous entries will
require coordination, and estimates that
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10 percent of all entries will be subject
to hazards as a result of work outside
the confined space.
Although the CONSAD report did not
provide direct estimates of compliance
rates for the information-exchange
requirements, OSHA believes that these
compliance rates are similar to the
compliance rates associated with the
requirements for notification to nonentrant employees (ID–003, Table D.2).
OSHA also believes it is reasonable to
assume that projects in compliance with
requirements addressing notification to
non-entrant employees would also be in
compliance with requirements
addressing employer-to-employer
communication.
OSHA calculated the annual
compliance cost for information
exchange on each project by multiplying
the supervisor’s hourly wage rate by the
number of hours per project for each
type of required information exchange.
To estimate the cost of information
exchange between host employers and
controlling contractors, OSHA modeled
eight minutes of three supervisors’ time
per project. Similarly, to estimate the
cost of information exchange between
controlling contractors and entry
employers, OSHA modeled 20 minutes
of supervisor time for the controlling
contractor, a worker-authorized
representative, and each of the entry
employers on the project. To estimate
the cost of information exchange
between the controlling contractor and
employers on the worksite having
employees whose work may result in a
hazard in the confined space, OSHA
modeled five minutes of supervisor time
for the controlling contractor and 10
percent of non-entry employers present.
Finally, to estimate the cost of
coordinating simultaneous entries,
OSHA modeled 10 minutes for 3
supervisors (i.e., the controlling
contractor and two entry employers) for
each such entry. For all of these
calculations, OSHA applied the totals to
the percentage of projects not already in
compliance (i.e., 1 minus the
compliance rate) and summed these
values across all projects. Using this
approach, OSHA estimates an annual
cost of approximately $9.3 million to
comply with the information-exchange
requirements in the final rule.
One commenter stated that the
requirements to exchange information
and coordinate entry operations
represent ‘‘an unnecessary burden’’ and
‘‘in some cases may be infeasible’’ (ID–
124). OSHA addresses this comment as
a technological-feasibility issue in the
section on technological feasibility, but
the commenter’s unsupported argument
also would fail if directed at economic
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infeasibility. Although this commenter
cited home-building industry statistics
indicating that homebuilders tend to be
small businesses that rely on
subcontractors to handle specialized
tasks, the comment did not explain how
this condition renders the multiemployer and communication
requirements of the rule economically
infeasible for that industry.
Under final § 1926.1203(b) and (c),
employers must inform exposed
employees of the existence of permit
spaces and the dangers they pose. In the
PEA, OSHA estimated that complying
with this requirement involved an
average of five minutes per notified
worker. In the FEA, the Agency no
longer includes such notification costs.
Rather, OSHA followed the PEA in
assuming that employers will achieve
compliance with the notification
requirement by posting a sign at each
confined space. OSHA estimates that
signs have a five-year life, and that
installation takes five minutes per sign.
The Agency calculates the cost of signs
as the unit cost of one sign times the
number of signs per project, and
calculates the installation costs as five
minutes (1⁄12 of an hour) times the
unskilled worker’s hourly wage times
the number of signs per project. OSHA
applies these totals to the percentage of
projects not already in compliance,
summed across all projects. Treating the
installation cost as a recurring cost, and
treating signs as a capital cost with a
useful life of five years, OSHA estimates
that the annualized cost of signs,
including materials and labor, to be $2.0
million.
Two stakeholders representing utility
contractors, in similarly worded
comments, stated that notifying nonauthorized entrants ‘‘could mean
informing 25–100 or more employees on
the jobsite, which would be extremely
time consuming’’ (ID–124 and ID–075).
However, OSHA believes that, beyond
posting the signs, there should be no
additional costs associated with the
requirement to inform exposed
employees of the existence of permit
spaces and the danger posed by
unauthorized entry. OSHA notes that,
under 29 CFR 1926.21(b)(2), employers
must already provide general training to
employees engaged in construction
work to ensure that they recognize the
hazards on the worksite, including
applicable signage warning of hazards.
As one commenter stated, ‘‘In reference
to warning employees not to attempt an
unauthorized rescue, it should be part of
every construction employee’s training
. . . because this warning applies to all
construction rescue operations’’ (ID–
075).
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In summary, OSHA estimates the total
annualized costs related to the final
requirements for evaluation and
classification, information exchange,
and notice to employees to be $12.1
million.
Written Program, Permit Issuance, and
Annual Review
The proposed standard required that
employers on worksites with confined
spaces either develop a confined-space
program and maintain a copy of the
written program, or, alternatively,
maintain a copy of the standard at the
site. For analytical purposes, OSHA
assumed that employers would choose
the least-cost alternative and maintain a
copy of the standard at the site in lieu
of developing a written program. In
contrast, final § 1926.1203(d) is similar
to the general industry provision in that
it requires entry employers to develop
and implement a written permit-space
program, and final § 1926.1204(n)
requires employers to review the
permit-space program.
In this FEA, OSHA estimates one hour
of supervisor time per project to write
a program. OSHA based this estimate on
the paperwork-burden determination
made in the proposed rule for
developing such a program, which no
commenter disputed. OSHA also notes
the wide availability of written model
permit-space programs provided by
government entities, trade associations,
and others, that employers could adapt
with a limited number of revisions to
comply with the new standard (see, for
example, https://www.purdue.edu/rem/
home/booklets/ConSpProg.pdf). OSHA
calculated compliance costs associated
with the requirement to develop a
written program as a one-time cost
consisting of one hour times the
supervisor’s hourly wage times the
number of projects. OSHA applied this
total to the percentage of projects not
already in compliance, and annualized
the costs using assumptions on the
share of projects that are new to a
contractor each year—yielding a total
annualized cost of approximately $1.3
million. OSHA notes that, in practice,
an employer is likely to develop one,
somewhat generic, program, and then
apply it later to other projects. Given the
ready availability of model programs
online and elsewhere, adapting one
with limited revisions to a company’s
particular needs is not especially
difficult or time consuming. In addition,
following the PEA, OSHA estimates five
minutes of supervisor time per program
for the annual review, and computes the
cost for this review as five minutes (1⁄12
of an hour) times the supervisor’s
hourly wage times the number of
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projects not already in compliance—
yielding an estimated annual
compliance cost of about $155,000.
Final § 1926.1205 requires employers
to issue entry permits, and final
§ 1926.1206 specifies the information
employers must include in the permits.
In the PEA, OSHA estimated that
compliance with the requirements to
issue written entry permits when
necessary, and to review procedures
periodically, would primarily involve
supervisor time; OSHA estimated that
15 minutes of supervisor time per
permit issued was sufficient for this
purpose. For this FEA, OSHA estimated
compliance costs associated with
issuing permits separately from the
compliance costs associated with the
annual review of the permit-space
program. Following the analysis by
CONSAD, OSHA estimates that
compliance with these provisions will
involve 10 minutes of supervisor time to
issue a permit, 5 minutes of clerical
time to write the permit, as well as 5
minutes of supervisor time to provide
written verification regarding the safety
of non-permit spaces, and 5 minutes of
clerical time for recordkeeping for nonpermit spaces. The total estimated
annual costs in this final standard
associated with issuing entry permits
and written verifications of safety are
$2.7 million.
In summary, OSHA estimates that the
annualized costs of the final
requirements to provide a written
program, issue written permits, and
conduct an annual review of the
program total to $4.2 million.
One commenter stated that the
requirement to develop a confinedspace program might require the
assistance of a third party, and asserted
that program development could cost
contractors $10,000 (ID–112). However,
the commenter did not explain the basis
for the $10,000 estimated cost of
program development, and did not
specify which elements of ‘‘program
development’’ were in its estimate. For
example, OSHA separately estimated
the costs of providing a written
confined-space program and developing
a training program. Furthermore, OSHA
notes that the final rule does not require
employers to engage a third party in the
development of a confined-space
program. Indeed, a variety of examples
of confined-space programs are widely
available on the Internet, which
employers may adapt for their needs; in
addition, OSHA will provide a small
entity compliance guide to aid
employers in developing such programs.
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Isolating Hazards and Providing
Ventilation
Final §§ 1926.1203(e) and 1926.1204
refer to isolating hazards and providing
ventilation to ensure safe entry
conditions for permit-required spaces
and confined spaces covered by
alternate procedures. As in the PEA,
OSHA estimates that isolating hazards
and providing ventilation would require
the time of a skilled construction
employee, additional costs for locks
and/or tags, the purchase costs, and the
operating and maintenance costs for a
portable ventilation system. OSHA
included the unit costs for these items
in Table IV–14 above. OSHA received
no specific comments on the
preliminary compliance costs in the
PEA related to these provisions. While
recognizing that isolation costs may
vary according to the hazards isolated,
OSHA nevertheless considers the cost
estimates in the PEA for blanking and
bleeding and lockout/tagout to be
reasonable estimates of isolation costs;
therefore, OSHA applied the same cost
methodology to this section of the final
standard.
OSHA estimated isolation costs by
multiplying the skilled worker hourly
wage times 10 minutes (1⁄6 or an hour)
times the number of entries per project
requiring blanking, plus the skilled
worker hourly wage times 5 minutes
(1⁄12 of an hour) times the number of
entries per project requiring double
block and bleed, plus the skilled worker
hourly wage times 10 minutes (1⁄6 of an
hour) times the number of entries per
project requiring lockout/tagout, plus
the cost of tags and locks annualized
over a 2-year useful life. OSHA applied
these totals to the percentage of projects
not already in compliance, summed
across all projects. Similarly, OSHA
estimated ventilation costs as the
purchase costs and operating and
maintenance costs for portable
ventilation systems applied to the
percentage of projects not already in
compliance, summed across all projects.
OSHA based this estimate on a unit cost
of about $1,332 per portable ventilation
system, annualized over a useful life of
5 years, and 10 minutes (1⁄6 of an hour)
of setup time multiplied by the
unskilled worker hourly wage. The
Agency applied these totals to the
percentage of projects not already in
compliance, summed across all projects.
Based on this method, OSHA estimates
total annualized costs related to
isolating hazards and providing
ventilation to be $2.5 million for this
final rule.
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25493
Monitoring, Early Warning Systems, and
Attendants
Final §§ 1926.1203(e) and
1926.1204(e) set forth requirements for
monitoring hazards, which generally
include continuous monitoring, or
periodic monitoring of sufficient
frequency, to ensure acceptable entry
conditions, as well as an early warning
system for non-isolated engulfment
hazards. The monitoring provision
reflects the requirements in § 1910(d)(5)
of the general industry standard, while
the requirement for an early warning
system is unique to the construction
standard (that is, not included in the
general industry standard).
Costs related to monitoring and early
warning consist of both equipment costs
and labor costs associated with
attendants and other employees who
perform these functions. The following
paragraphs include a discussion of the
costs related to attendants and other
employees who perform monitoring and
early warning for hazards under
specified conditions.
One commenter stated that the early
warning system for engulfment hazards
will be ‘‘quite expensive for a contractor
to purchase, install and maintain with
calibration’’ (ID–098), while some other
commenters suggested that the
requirement for an early warning system
would force employers to hire more
employees for the purpose of
monitoring for these hazards (ID–059
and ID–112). OSHA provides a choice to
employers for how they comply with
the early warning requirement: They
may use early-warning equipment or
they may rely on personnel to provide
warning. OSHA expects that employers
will do whatever is less costly; in some
cases this will be a worker exclusively
assigned to monitoring duty, and in
other cases it will be cheaper to use a
monitoring device. OSHA calculated the
costs based on the use of personnel to
perform this function because it is
simpler to calculate on a per-instance
basis; however, OSHA does not expect
that the cost of purchasing a device
would be significantly higher on a perinstance basis when employer can use
the device over a number of projects and
over several years. In some cases the
equipment cost will be lower than the
labor estimates included in this
analysis.
OSHA expects that incumbent
workers can discharge the early
warning-monitoring duty, and estimates
the total cost as the construction
worker’s hourly wage multiplied by the
number of entry hours per project,
which varies by project. OSHA applied
these totals to the percentage of projects
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not already in compliance, summed
across all projects. Based on this
method, OSHA estimates total
annualized costs of $3.6 million to
comply with the requirement to provide
an early warning system.
To assign costs to the use of
equipment required to monitor
atmospheres in confined spaces, OSHA
estimated in the PEA that gas monitors
have an average useful life of 2.5 years,
and that their unit cost (in 2009 dollars)
is $1,660. One commenter (ID–222, p.
12) stated that an average monitor
would cost ‘‘around $2,000,’’ and that
an employer would need to have two
units and additional sensors due to
reliability problems with such
equipment. The Agency notes that
employers in general industry have
successfully used monitoring equipment
under the general industry standard,
and the Agency believes that reliable
equipment is commercially available.
Moreover, based on OSHA research, the
price of a gas monitor has fallen to
around $1,000, and industry practice
suggest that a gas monitor has a useful
life of 5 years; these are the estimates
used in this FEA.
OSHA estimated 20 minutes of
supervisor time to set up the monitoring
equipment, taking into account the
possibility that, in some cases (with a
test occurring after 160 hours of use—
a conservative estimate according to
industry experts). OSHA calculated the
costs related to monitoring as the
equipment cost ($1,000) annualized
over a useful life of 5 years, plus
operating and maintenance costs equal
to 5 percent of equipment costs, plus
calibration costs based on use time, plus
observation and testing costs based on
the duration of entries, which varies by
project. OSHA applied these totals to
the percentage of projects not already in
compliance, summed across all projects.
Based on these calculations, OSHA
estimates that annualized compliance
costs for monitoring total to $11.3
million.
A commenter stated that employers
had concerns about the recordkeeping
cost of retaining monitoring data for 30
years (ID–222). However, OSHA notes
that although employers must make
exposure records for employees exposed
to hazards available for 30 years under
pre-existing OSHA requirements (i.e., 29
CFR 1910.1020), this final rule does not
require that routine monitoring records
be kept for 30 years.
Final § 1926.1204(f) requires
employers to post an attendant outside
the permit space for the duration of
authorized entry operations, and final
§ 1926.1209 sets forth the duties of
attendants, which include assessing the
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entrants and the conditions inside and
outside the permit space to detect
prohibited conditions and summoning
rescue and other emergency services.
The requirement for an attendant is
similar to a requirement in the general
industry standard. In this FEA, as in the
PEA, OSHA estimates that the cost of
posting an attendant is the wage rate of
a skilled construction worker multiplied
by the time that entrants spend in the
confined space.
Rescue Capability
The proposed standard sets forth
several requirements for non-entry and
entry rescue, including provisions for
preparing, protecting, and training
entry-rescue employees. In the PEA,
OSHA estimated that compliance with
rescue-related provisions would have a
total annualized cost of approximately
$9.6 million, including costs for nonentry rescue and in-house entry rescue
teams for many construction projects.
One comment characterized the
estimated costs related to rescue
‘‘planning and compliance’’ as
‘‘drastically low and inaccurate’’ (ID–
124). Several commenters seized on the
proposed requirement to summon an
entry-rescue team whenever an
employer initiates a non-entry rescue.
For example, at the hearing, testimony
from the National Utility Contractors
Association suggested that the proposed
rule required employers to have ‘‘a
standby entry rescue team that can
respond to the incident in a timely
manner’’ (ID–210, Tr. p. 177). Another
commenter stated that the rescue
requirements are ‘‘unreasonable and
burdensome’’ (ID–075). This
commenter, representing utility
contractors, elaborated on its concerns:
It is not always practical or feasible to have
a rescue team onsite and it is very expensive
to have a team on standby unless it is the
local fire/police rescue squad. The proposed
rule should be revised to permit entry into
the average PRCS without having a rescue
team onsite or on standby. Most fire
department rescue squads can handle the
majority of confined space rescues, such as
manhole, pipe, vault and underground tank
rescues. However, due to liability, most fire
departments will not assume the
responsibility of being the designated rescue
team on standby, although they will respond
to a call and perform the rescue. In our
opinion it is safer to have professionals
respond than to depend on employees who
have had some training and probably no
experience handling an actual rescue. Id.
(emphasis in original).
Other commenters suggested that
rescue equipment costs could be high.
One commenter stated: ‘‘At the very
least, the equipment would include a
tri-pod, retrieval device, ventilation
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equipment, air monitors, two airsupplied respirators, air cart and air
bottles or air compressor designed to
provide breathing air, stokes stretcher
and necessary equipment to package the
victim and much more’’ (ID–075).
Another commenter stated that the
‘‘rescue equipment required could vary
greatly. A Confined Space Rescue Team
Kit, consisting of a tripod, rescue
harnesses/helmets, blower, rope,
hardware, software, etc., can easily cost
upwards of $17,000 per set’’ (ID–112).
In response to these and other
comments, OSHA revised the
requirements for rescue and emergency
services for the final rule. For example,
OSHA dropped the requirement in
proposed § 1926.1211(h)(2) that
required employers to summon an
entry-rescue team every time they
initiated non-entry rescue. OSHA also
clarified the Agency’s preference for
non-entry rescue, which typically
consists of a retrieval system and is,
therefore, less expensive than entry
rescue. Moreover, it appears that some
of the commenters mistakenly included
costs for equipping contracted rescue
services (rather than in-house services
of employees) when asserting that
OSHA’s estimates were too low;
employers would not incur such costs
as the result of this final rule, and
OSHA, therefore, did not include these
costs in this analysis.
Final § 1926.1204(i) requires
employers to develop and implement
procedures for: Providing rescue and
emergency services, including
procedures for summoning emergency
assistance in the event of a failed nonentry rescue; rescuing entrants from
permit spaces; providing necessary
emergency services to rescued
employees; and preventing
unauthorized personnel from attempting
a rescue. Paragraph (a) of § 1926.1211
specifies the criteria according to which
employers can choose rescue and
emergency services; § 1926.1211(b)
specifies requirements for employers
who choose to designate their own
employees as the rescue service; and
§ 1926.1211(c) sets forth requirements
related to retrieval systems used to
facilitate non-entry rescue from permit
spaces. These provisions are similar to
the general industry standard for
confined spaces. For cost-estimation
purposes in the PEA, OSHA judged that
entry employers would designate
employees who use self-contained
breathing apparatuses to provide entry
rescue services. OSHA also determined
that the rescue-related compliance costs
incurred by these employers include
expenditures for training and
equipment. The Agency used the time of
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a skilled construction worker to
estimate the labor costs associated with
training four employees in rescue
operations, conducting practice rescue
operations, and training one employee
in CPR. Separately, OSHA estimated
costs of retrieval lines for employers
electing non-entry rescues. Thus, for the
proposed rule, the Agency estimated
costs for entry rescue and non-entry
rescue separately.
Final § 1926.1211(c) requires
employers to use non-entry rescue, such
as retrieval equipment, unless the
retrieval equipment would increase the
overall risk of entry or would not
contribute to the rescue of the entrant.
Therefore, for this FEA, OSHA
estimated that employers that use nonentry rescue (retrieval lines) would not
also designate employees for entry
rescue for the same project, but would
instead continue to rely solely on
emergency services in the event of nonentry rescue failure. OSHA estimated a
unit cost per entrant of $3,250 for
retrieval systems. The cost of retrieval
systems includes the cost of harnesses,
which, according to one commenter,
cost $100 each and have a useful life of
5 years (ID–112). However, harnesses
are a small part of a retrieval system’s
total cost. In addition to the equipment
cost of retrieval lines for each entrant,
employers using non-entry rescue
would incur additional costs, including
one hour of supervisor time to establish
rescue procedures and one hour of
practice annually for a supervisor and
team of 4 non-entry rescuers.
OSHA judges that, when employers
do not employ non-entry rescue, they
will rely on in-house rescue teams only
when entrants use a self-contained
breathing apparatus, and will rely on
outside rescue service in other
situations. OSHA estimates one hour of
supervisor time to establish rescue
procedures for all employers electing
entry-rescue procedures. Following the
PEA, OSHA modeled additional costs
only for employers using in-house
rescue teams; these costs include one
hour of practice annually for a
supervisor and a team of four rescuers,
as well as costs for annual training, CPR
training, and entry-rescue equipment.
OSHA did not receive any comments
addressing its method of estimating
costs for employers using in-house
rescue services.
In the PEA, OSHA estimated that
confined-space entry-rescue team kits
will cost approximately $5,330 per unit
(in 2009 dollars). While rescue team kits
as such are not required by the standard,
they are a simple way for an employer
to obtain the equipment typically
necessary for an adequate rescue team.
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OSHA concurs with the comment that
unit costs for these rescue kits can vary
considerably, but a review of
commercially available kits shows that
the estimate developed by OSHA is
reasonable. For example, one
commercially available system priced at
$2,735 includes a tripod rescue/retrieval
system, blower, gas monitor with
calibration capability, and a harness.
Another system, priced at $4,450,
includes a two-way communication
system, talk box, cable splitter, operator
headset, face masks, speaker harnesses,
cables, hooks, and connectors.
Confined-space rescue kits are available
at a price range of $3,000–$4,500. These
kits typically include a wide range of
items such as a tripod with bag, spine
splint, collar kit, 4:1 rescue kit, fullbody harnesses, tag line, belay line,
anchor sling, continuous-loop sling,
handled ascender, helmets, ascending
stirrup, rope pad, rope guard, and
carabiners.54 Based on these prices, and
given that OSHA estimated costs for
communication devices, ventilation
equipment, and gas monitors elsewhere
in this analysis, OSHA believes that its
estimate of $5,330 for a rescue kit more
accurately reflects the requirements of
the standard than does the estimate of
$17,000 suggested by the commenter.
Indeed, OSHA’s cost estimate may be an
overestimate of the true cost to the
extent that a particular confined space
covered by the final standard may not
require some of the equipment included
in commercially available kits.
The final rule requires non-entry
rescue unless the retrieval equipment
would increase the overall risk of entry
or would not contribute to the rescue of
the entrant. To calculate compliance
costs, OSHA estimated that employers
will use non-entry rescue with retrieval
lines for projects whenever required
under the standard, and will select entry
rescue for all other projects. OSHA
estimated that, for all projects, one hour
of supervisor time is necessary to set up
procedures, and estimates this cost as
the supervisor’s hourly wage, applied to
all projects not already in compliance.
In addition, OSHA estimated costs for
projects that use non-entry rescue based
on the equipment costs for retrieval
lines ($3,250) multiplied by the number
of entrants on a project. The Agency
annualized this cost over a useful life of
20 years, with the total applied to the
percentage of projects not already in
54 See https://www.majorsafety.com/index.cfm/
product/450_105/confined-space-tripod-rescuesystem-with-bw-gasalert-max-xt-and-blower.cfm;
https://www.rocknrescue.com/acatalog/Con-SpaceRescue-Kit-3.html#aCSI_2dRES_2dKIT3; https://
www.rocknrescue.com/acatalog/Skedco-EvacConfined-Space-Rescue-Kit.html.
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25495
compliance, adjusted for the number of
projects with retrieval lines onsite but
not properly used. OSHA estimated four
hours of skilled worker time per year to
capture the cost of non-entry rescue
practice, and applied this total to the
percentage of projects not already in
compliance.
OSHA estimated costs for projects
using entry rescue as the cost of
providing in-house rescue for a subset of
projects. For all other projects, OSHA
estimated that employers will rely on
local emergency responders to provide
entry rescue, as most employers who
have programs do today. For projects
using in-house rescue, OSHA calculated
the cost of 2 days of entry-rescue
training for 4 skilled construction
workers (16 hours times 4 workers times
the skilled construction worker’s hourly
wage), 4 hours of CPR training for one
skilled worker, and a set of rescue
equipment annualized over a useful life
of 5 years. OSHA estimated 4 hours of
skilled worker time per year to capture
the cost of non-entry rescue practice,
and applied this total to the percentage
of projects not already in compliance.
Based on this method, OSHA estimates
that the annualized costs for the
requirements in the final standard to
provide rescue capability total to $8.3
million.
Training
Final § 1926.1207 sets forth
requirements for training entrants,
attendants, and supervisors to ensure
safe performance of the duties assigned
under the standard.
In the PEA, OSHA estimated that
annualized training costs associated
with the proposed standard would total
to $8.1 million. As stated in the PEA,
this total reflected an adjustment to the
estimates in the CONSAD report based
on comments received from potentially
affected small businesses, and the
findings and recommendations made by
a panel of reviewers. Several
commenters stated that training under
the proposed rule would be expensive.
However, since the final rule represents
a significant simplification of the
requirements in the proposed rule,
OSHA reduced the cost estimates
accordingly. OSHA further notes that,
although it anticipates that most
affected employers will train workers
once using a procedure that covers
many topics, and conduct refresher
training as appropriate along with
training newly arrived employees, the
Agency modeled training costs on a perproject basis to be consistent with the
rest of the CONSAD-derived analysis.
This assumption, along with the unit-
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cost figures used, results in a large and
inflated estimate of the training costs.
OSHA notes that the duties of
entrants and attendants as set forth in
the final standard are now similar to the
duties of comparable employees covered
by the general industry standard, and
that many commenters stated that they
were already complying with the
general industry standard. In addition,
29 CFR 1926.21(b), a decades-old
provision applicable to confined spaces
in construction, already requires some
training on the characteristics of
confined spaces and associated safety
practices. Many comments echoed the
statement that ‘‘affected construction
workers are already extremely familiar
with the existing general industry
standard’’ (ID–148). Therefore,
consistent with the observations above,
OSHA believes that the training
required for employees will be less
extensive than was suggested by the
Agency’s preliminary training cost
estimates.
For this final analysis, OSHA
estimates that the costs associated with
training entrants and attendants would
primarily involve supervisor and
employee time necessary for the
supervisor to conduct the training. For
this FEA, OSHA estimated that
employers will spend four hours of
supervisor time plus an hour of clerical
time developing or revising the training
programs for entrants, attendants, and
supervisors. OSHA estimates 15
minutes of training for entrants and
attendants (1 supervisor and 1 clerical
worker are modeled to provide training
to a class of 10 entrants). OSHA also
includes 1 hour of supervisor training,
and 6 minutes of supervisor time to
provide the training, per project (again,
assuming a class size of 10). As a
reminder, most supervisors are already
familiar with the general industry rule
and, therefore, with many provisions of
this final rule. Based on these
underlying unit costs, OSHA estimates
that the annualized training-related
costs under the final standard will be
$11.3 million.
Other Compliance Costs
Other compliance costs associated
with the final standard include
providing disposable coveralls when
necessary, emergency lights, traffic
barriers, and communication
equipment. OSHA identified these costs
in the PEA and received no specific
comments on the compliance costs for
these requirements. Therefore, the
Agency used the same methodology in
this FEA to estimate these costs.
OSHA modeled the clothing costs
based on workers wearing disposable
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coveralls. The Agency multiplied the
number of worker entries requiring
disposable coveralls for each project
type (by activity and size) by the
number of projects in that category that
are not currently in compliance and by
the unit-cost for disposable coveralls of
$8.94 per set. The number of entries
requiring this clothing is a subset of the
entire number of entries. The estimated
annual cost for disposable overalls
comes to $2.7 million.
To calculate the costs of emergency
lights, OSHA estimated the number of
simultaneous entries for each project
type. OSHA then multiplied that
number by the unit cost of a lantern,
$19.04, and annualized it over a useful
life of 3 years. Finally, OSHA multiplied
the cost per project by the number of
projects not in compliance for each
category, and summed across categories.
The resulting cost is about $193,000 a
year.
To calculate the costs of traffic
barriers, OSHA added costs for traffic
barricades and barricade tape. The
Agency estimated that 50 percent of all
projects require these controls. OSHA
then annualized the unit cost of $165.64
for a traffic barricade over 3 years, and
the unit cost of barricade tape at $2.12.
The total annualized cost of these
barriers comes to $2.9 million.
To calculate the costs of
communication equipment, OSHA
assumes that employers use two-way
radios. OSHA estimated using this
equipment for each simultaneous entry.
The useful life of this equipment is
typically three years. OSHA multiplied
annualized costs by the number of
simultaneous entries per project and by
the number of projects not in
compliance per category, and summed
the results across categories. The total
annual communication costs come to
about $55,000.
The total annualized costs for these
other requirements come to $6.5
million.
Respiratory Protection
In this FEA, OSHA did not include
costs for respiratory protection for two
reasons. First, OSHA designed the final
rule to prevent an employee’s exposure
to confined-space hazards whenever
possible, thereby obviating the need for
respirators and other PPE in those cases;
the provisions of the final rules
designed to prevent such exposure
include training, information exchanges,
and a program that ensures appropriate
testing and evaluation, monitoring,
planning, and control of the space to
prevent unauthorized entry (including
unauthorized rescues). This approach is
fundamental to OSHA’s regulatory
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policy, which recognizes a hierarchy of
controls consisting of engineering
controls when possible, then workpractice controls when engineering
controls are not possible, and finally
personal protective equipment only
when the other controls are not
feasible.55 Second, consistent with the
design of the final rule, none of the
safety benefits estimated in this FEA
were attributable to respiratory
protection. The Agency believes that it
would be inconsistent to attribute costs,
but not benefits, to respiratory
protection (unless, of course, the
respiratory protection requirement
generates costs but not benefits).
This treatment of respiratory
protection in the FEA is fundamentally
different from OSHA’s earlier treatment
of respiratory protection in the PEA. In
the PEA, OSHA included costs for
employers to provide respiratory
protection. These costs included the
purchase of the appropriate type of
respirator (e.g., self-contained breathing
apparatus, powered air purifying
respirators, dust masks), time and
materials for cleaning respirators, and
other necessary equipment such as a
55 The following excerpt from the preamble to
OSHA’s Cadmium standard at 57 FR 42101, 42340
(Sept. 14, 1992) provides a typical summary of
OSHA’s concerns about reliance on PPE and the
importance of the hierarchy of controls:
Engineering controls are preferred by OSHA for
a number of reasons. Engineering controls are
reliable, provide consistent levels of protection to
large numbers of workers, can be monitored
continually and inexpensively, allow for
predictable performance levels, and can remove
toxic substances from the workplace. Once
removed, the toxic substances no longer pose a
threat to the employee. Moreover, the effectiveness
of engineering controls does not depend to any
marked degree on human behavior, and . . . the
operation of equipment is not as vulnerable to
human error as is the use of personal protective
equipment . . .
Respirators are another, important method of
compliance. However, to be used effectively,
respirators must be individually selected; fitted and
periodically refitted; conscientiously and properly
worn; regularly maintained; and replaced as
necessary. In many workplaces, these preconditions
for effective respirator use are difficult to achieve
with sufficient consistency to provide adequate
protection. The absence of any of these
preconditions can reduce or eliminate the
protection the respirator provides to the employee.
Because there are so many ways that respirators
can be rendered ineffective and so many potential
problems associated with their use, OSHA has
traditionally relied less on respirators than on
engineering and work-practice controls in the
hierarchy of controls. For example, where work is
strenuous, the increased breathing resistance of
certain types of respirators may contribute to an
employee’s health problems and may reduce the
acceptability of wearing a respirator to employees.
Although experience in industry shows that most
healthy workers do not have physiological
problems wearing properly chosen and fitted
respirators, common health problems can cause
difficulty in breathing while an employee is
wearing a respirator.
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compressor or air supply, depending on
the type of confined space and the type
of work performed in the space.
Furthermore, the Agency used a
relatively low rate of current respirator
compliance in the PEA, resulting in
significant estimated costs
(approximately $11.6 million in 2009
dollars) for respirator protection.
The revised treatment of respiratorprotection costs in this FEA remedies
several issues retrospectively identified
in the PEA. First, OSHA designed the
final rule to avoid respirator use by
relying instead on training, information
exchanges, and a program that ensures
appropriate testing and evaluation,
monitoring, planning, and control of the
space to prevent unauthorized entry
(including unauthorized rescues). The
costs estimated for respirator protection
in the PEA failed to fully appreciate the
underlying logic of the proposed rule to
avoid respirator use whenever possible.
Second, OSHA did not attribute any
benefits to respirator protection in the
PEA. Removing the respirator-protection
costs in the FEA resolves the
inconsistent treatment of respirator
costs and respirator benefits in the PEA.
The third issue concerns the relatively
low rate of respirator compliance used
to estimate the costs of respirator
protection in the PEA. These rates
reflected the findings of the 1994
CONSAD report. As noted earlier in this
FEA, some commenters questioned the
continued relevance of the CONSAD
report produced in 1994 (ID–222, p. 20).
In light of these comments, OSHA
reexamined the CONSAD report and
concluded that, generally, while it is the
best available data source for this
rulemaking, the Agency had to make
adjustments in particular areas to reflect
updated information. One of these areas
involves CONSAD’s outdated
assumptions and data regarding
respirator use. Based on surveys
conducted in 1993, the CONSAD report
assumed a high rate of non-compliance
with the Respiratory Protection standard
that existed at the time, and the PEA
included significant respirator costs
under the assumption that the new
confined-spaces standard for
construction would have a significant
impact on respirator use. However, the
CONSAD assumption did not account
for the publication of OSHA’s
significantly revised Respiratory
Protection standard in 1998 (63 FR 1152
(Jan. 8, 1998)). In that 1998 rulemaking,
OSHA reviewed its enforcement data for
the years 1990–1996, acknowledged that
many of the respiratory-protection
programs were deficient, and designed
the new standard to improve employer’s
selection, maintenance, fit testing, and
training for proper respirator use, and
‘‘to provide employers with the tools
needed to implement an effective
respiratory protection program’’ (63 FR
1160). The rulemaking increased
monitoring requirements and awareness
and understanding of the respirator
requirements. In light of these revisions
to the Respirator Protection standard
subsequent to the CONSAD report,
OSHA concluded that the new standard
would significantly enhanced employer
compliance with the respiratoryprotection requirements by reducing
25497
misinterpretations and inconsistencies
(63 FR 1158). Enhanced compliance
increased the respiratory protection
provided to workers, making it
unnecessary to rely on the provisions of
this final confined-space rulemaking to
protect workers from respiratory
hazards.
The new confined-spaces standard
does not require any additional
respirator use beyond that already
required by the existing Respiratory
Protection standard. OSHA believes that
the much-reduced need for respirator
protection in confined spaces in the
future (as a result of this final rule) will
not increase, and could arguably
decrease, future respirator use in
confined spaces in construction relative
to current respirator use.
Annualized Costs by NAICS Industry
Based on the cost estimates for the
individual provisions contained in this
final standard, Table IV–15 shows, by
affected industry engaged in
construction activity, annualized
compliance costs for all establishments,
annualized compliance costs for all
small entities (as defined by the Small
Business Act and the Small Business
Administration’s (SBA’s) implementing
regulations; see 15 U.S.C. 632 and 13
CFR 121.201), and annualized
compliance costs for all very small
entities (those with fewer than 20
employees). OSHA annualized the costs
presented in Table IV–15 using the
discount rate of 7 percent, which is,
along with a discount rate of 3 percent,
recommended by OMB in Circular A–4.
TABLE IV–15—ANNUALIZED COSTS, BY INDUSTRY, FOR ALL CONSTRUCTION ENTITIES AFFECTED BY THE FINAL CONFINEDSPACE STANDARD FOR ALL ESTABLISHMENTS, SMALL ENTITIES, AND VERY SMALL ENTITIES
All
establishments
NAICS
Industry
221310 ..........
236115 ..........
Water Supply and Irrigation Systems .............................................
New Single-Family Housing Construction (except Operative
Builders).
New Multifamily Housing Construction (except Operative Builders).
Residential Remodelers .................................................................
Industrial Building Construction ......................................................
Commercial and Institutional Building Construction .......................
Water and Sewer Line and Related Structures Construction ........
Power and Communication Line and Related Structures Construction.
Highway, Street, and Bridge Construction .....................................
Other Heavy and Civil Engineering Construction ..........................
Other Foundation, Structure, and Building Exterior Contractors ...
Electrical Contractors and Other Wiring Installation Contractors ..
Plumbing, Heating, and Air-Conditioning Contractors ...................
Drywall and Insulation Projects ......................................................
Site Preparation Contractors ..........................................................
Total .........................................................................................
236116 ..........
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236118
236210
236220
237110
237130
..........
..........
..........
..........
..........
237310
237990
238190
238210
238220
238310
238910
..........
..........
..........
..........
..........
..........
..........
Small entities
(SBA-defined)
$51,635
813,505
$14,299
578,128
$8,738
351,852
955,662
533,573
174,635
8,277,207
2,331,853
11,862,610
8,687,099
2,125,111
7,853,017
527,967
5,868,843
4,956,577
697,984
4,342,753
175,989
1,747,634
1,400,582
105,944
15,614,845
1,405,363
1,627,010
1,627,010
2,471,532
1,627,010
844,522
4,915,948
513,278
1,069,906
877,857
1,450,572
686,015
559,703
1,061,237
145,898
428,448
330,259
551,757
203,983
211,959
60,321,976
31,103,667
11,241,667
Source: U.S. Department of Labor, OSHA, Directorate of Standards and Guidance, Office of Regulatory Analysis-Safety.
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Very small entities
<20 employees)
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Time Distribution of Compliance Costs
Table VI–4 provides the estimated
stream of unannualized compliance
costs for 10 years following the effective
date of the final standard.
TABLE VI–4—DISTRIBUTION OF
COMPLIANCE COSTS BY YEARS
Year
Year
Year
Year
Year
Year
Year
Year
Year
Year
1 ...................................
2 ...................................
3 ...................................
4 ...................................
5 ...................................
6 ...................................
7 ...................................
8 ...................................
9 ...................................
10 .................................
$ 93,068,644
50,514,323
50,950,150
55,365,256
50,950,150
76,163,971
55,801,082
50,514,323
50,950,150
55,365,256
Source: Department of Labor, OSHA, Directorate of Standards and Guidance,
Office of Regulatory Analysis-Safety.
7. Economic Feasibility Analysis and
Regulatory Flexibility Determination
Introduction
In this chapter, OSHA investigates the
economic impacts of its final standard
on confined spaces in construction. This
impact investigation has two overriding
objectives: (1) To determine whether the
final rule is economically feasible for all
affected industries, and (2) to establish
if the Agency can certify that the final
standard will not have a significant
economic impact on a substantial
number of small entities.
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Economic Feasibility
Section 6(b)(5) of the OSH Act states:
‘‘The Secretary . . . shall set the
standard which most adequately
assures, to the extent feasible, on the
basis of the best available evidence, that
no employee will suffer material
impairment of health or functional
capacity. . . .56 [Emphasis added.]
OSHA interpreted the phrase ‘‘to the
extent feasible’’ to encompass economic
feasibility. The U.S. Court of Appeals
for the D.C. Circuit supported this
interpretation in a 1974 decision.57 The
court noted that ‘‘Congress does not
appear to have intended to protect
employees by putting their employers
out of business . . ., ’’ 58 and then
proceeded to define the concept of
‘‘economic feasibility’’ and to indicate
its boundaries:
Standards may be economically feasible
even though, from the standpoint of
employers, they are financially burdensome
and affect profit margins adversely. Nor does
the concept of economic feasibility
necessarily guarantee the continued
56 29
U.S.C. 655(b)(5).
Union Dep’t v. Hodgson, 499 F.2d 467
(D.C. Cir. 1974).
58 Id. at 478.
57 Indus
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existence of individual employers. It would
appear to be consistent with the purposes of
the Act to envisage the economic demise of
an employer who has lagged behind the rest
of the industry in protecting the health and
safety of employees and is consequently
financially unable to comply with new
standards as quickly as other employers. As
the effect becomes more widespread within
an industry, the problem of economic
feasibility becomes more pressing.59
Thus, according to the court, OSHA
standards would satisfy the economicfeasibility criterion even if they impose
significant costs on regulated industries
and force some marginal firms out of
business, so long as they did not cause
massive economic dislocations within a
particular industry or imperil the
existence of the industry.60 The
implication for analysis of economic
impacts is that OSHA must determine
whether its standards will eliminate or
alter the competitive structure of an
industry, not to determine whether any
individual plants may close.
In practice, the economic burden of
an OSHA standard on an industry—and
whether the standard is economically
feasible for that industry—depends on
the magnitude of compliance costs
incurred by establishments in that
industry and the extent to which they
are able to pass those costs on to their
customers. To determine whether a rule
is economically feasible for an industry,
OSHA begins with two screening tests
to consider minimum threshold effects
of the rule under two extreme cases: (1)
All costs are passed through to
customers in the form of higher prices,
and (2) firms absorb all costs in the form
of reduced profits. In the former case,
the immediate impact of the rule would
appear as increased industry revenues.
In the absence of evidence to the
contrary, OSHA generally considers a
standard to be economically feasible for
an industry when the annualized costs
of compliance are less than a threshold
level of one percent of annual revenues.
Retrospective studies of previous OSHA
regulations show that potential impacts
of such a small magnitude are unlikely
to eliminate an industry or significantly
alter its competitive structure.61
In the second case, the immediate
impact of the rule would appear as
reduced industry profits. Again, in the
absence of evidence to the contrary,
OSHA generally considers a standard to
be economically feasible for an industry
59 Id.
60 Id.; see also Am. Iron and Steel Inst. v. OSHA,
939 F.2d 975, 980 (D.C. Cir. 1991); United
Steelworkers of Am., AFL–CIO–CLC v. Marshall,
647 F.2d 1189, 1265 (D.C. Cir. 1980).
61 See OSHA’s Web page, https://www.osha.gov/
dea/lookback.html#Completed, for a link to all
completed OSHA lookback reviews.
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when the annualized costs of
compliance are less than a threshold
level of 10 percent of annual profits.
OSHA’s choice of a threshold level of 10
percent of annual profits is low enough
that even if the industry incurred all
compliance costs upfront, the costs
could still be met from profits without
needing to resort to the credit market.
Assuming a 7 percent discount rate and
a 10-year annualization period, the
compliance costs would equal about 70
percent of first-year profits; the industry
could absorb these costs from profits
without resorting to credit markets. The
industry analysis refers to an average
firm and its threshold level of profits.
Some firms in any industry are belowaverage, and under-capitalized, poorly
run, saddled with lawsuits, or operating
in a shrinking market. OSHA cannot
guarantee that not a single firm in any
industry will become unprofitable in the
first year because of this rule, but rather
that the vast majority of firms will have
their profits impacted by 10 percent or
less.
To implement the economic
feasibility screening tests described
above, OSHA first compared, for each
affected industry, annualized
compliance costs to annual revenues
and profits per (average) affected
establishment. The results for all
affected establishments in affected
industries are in Table IV–14. Shown in
the table for each affected industry are
the total number of affected firms
(entities) and establishments, the
percentage of firms affected, annualized
costs per affected establishment, annual
revenues per establishment, annual
profits per establishment, annualized
compliance costs as a percentage of
annual revenues, and annualized
compliance costs as a percentage of
annual profits.
To estimate costs for different NAICS
construction industries, OSHA
developed ‘‘crosswalks’’ from project
types used in the CONSAD report to the
appropriate NAICS. The Agency then
used data from the 2007 Statistics of
U.S. Businesses to obtain information on
the number of establishments and
receipts (revenues), and data from the
Internal Revenue Service Corporation
Source Book to obtain the average of
2003–2007 profit rates for these sectors.
Subsequently, OSHA allocated
confined-space projects to sectors and
size classes on the assumption that
smaller establishments are less likely to
work in such spaces than larger ones,
and on an allocation rule whereby the
Agency assigned each establishment a
project before assigning any
establishment a second project (for
analytical tractability). Finally, OSHA
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of compliance represent about 0.08
percent of revenues and 1.6 percent of
profits, on average, across all affected
entities.
As previously noted, OSHA
established a minimum threshold level
of annualized costs, equal to 1 percent
of annual revenues or 10 percent of
annual profits, below which the Agency
concluded that costs are unlikely to
threaten the economic viability of an
affected industry. The key result from
Table IV–16, for purposes of
determining economic feasibility, is that
annualized compliance costs do not
represent more than 0.48 percent of
revenues for affected firms in any
industry. Furthermore, there is only one
industry, NAICS 236210 (Industrial
Building Construction), in which
annualized compliance costs for
affected firms exceed 10 percent of
annual profits. For that industry,
annualized compliance costs are equal
to 10.56 of annual profits. However, the
aggregated compliance costs by
industry, divided by the number of
affected establishments in the industry
to derive average compliance costs per
affected establishment by industry, and
compared the quotient to average
annual establishment revenues and
profits by industry.
Note that, in any industry sector in
construction, the final standard will
affect directly only a small percentage of
firms and establishments in any given
year. Many business entities in affected
industries do not regularly work with
confined spaces. As demonstrated in
Tables IV–16 and IV–3, respectively, the
final standard will affect only about 6.3
percent of firms and 7.2 percent of
establishments in the affected
industries. OSHA estimates that the
average cost of complying with the final
standard, per affected establishment,
will be less than $2,000 annually
(compared with average revenues of
about $2.6 million). The estimated costs
Agency believes that the final standard
would still be clearly feasible for this
industry because, first, the final
standard affects only 1.84 percent of all
firms in that industry each year (see
Table IV–4). Second, OSHA believes
that firms engaged in confined-spaces
work are larger and more profitable than
average, so profit losses to them are
likely to be less than modeled. Third,
OSHA does not believe that industries
will absorb all or most of the costs of the
final standard in lost profits. The price
elasticity of demand in construction is
sufficiently inelastic to enable affected
firms to substantially offset variable
compliance costs through minor price
increases—here, less than 0.5 percent—
without experiencing any significant
reduction in total revenues or in net
profits. Consequently, the Agency
concludes that the final standard for
confined spaces in construction is
economically feasible for all affected
industries.62
TABLE IV–16—POTENTIAL ECONOMIC IMPACTS FOR ENTITIES AFFECTED BY THE FINAL STANDARD FOR CONFINED SPACES
IN CONSTRUCTION
[2009 dollars]
Affected
NAICS
industry
code
221310 ...
236115 ...
236116 ...
236118 ...
236210 ...
236220 ...
237110 ...
237130 ...
237310 ...
237990 ...
238190 ...
238210 ...
238220 ...
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238310 ...
238910 ...
Industry name
Firms
Water Supply and Irrigation Systems.
New
Single-Family
Housing
Construction (except Operative Builders).
New Multifamily Housing Construction (except Operative
Builders).
Residential Remodelers .............
Industrial Building Construction ..
Commercial and Institutional
Building.
Water and Sewer Line and Related Structures Construction.
Power and Communication Line
and Related Structures Construction.
Highway, Street, and Bridge
Construction.
Other Heavy and Civil Engineering Construction.
Other Foundation, Structure, and
Building Exterior Contractors.
Electrical Contractors .................
Plumbing, Heating, and Air-Conditioning Contractors.
Drywall and Insulation Projects ..
Site Preparation Contractors ......
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Annualized
compliance
costs per
affected firm
Average
revenues
per firm
($ thousands)
Average profits per firm
($ thousands)
Annualized
costs as a
percentage
of affected
firm
revenues
(percent)
Annualized
costs as a
percentage
of affected
firm profits
(percent)
22
65
0.61
$2,347
$2,235
$132
0.11
1.78
1,075
1,321
1.75
757
1,691
77
0.04
0.99
830
883
19.22
1,151
5,774
262
0.02
0.44
9,405
71
5,401
9,602
106
6,408
9.44
1.84
13.08
880
32,843
2,196
757
6,865
9,519
34
311
431
0.12
0.48
0.02
2.57
10.56
0.51
2,579
2,765
18.85
3,368
3,787
227
0.09
1.49
127
341
2.49
16,733
6,968
417
0.24
4.01
3,486
4,275
31.83
4,479
10,230
612
0.04
0.73
778
965
14.96
1,806
4,633
277
0.04
0.65
1,163
1,182
20.40
1,399
1,243
57
0.11
2.46
2,046
2,264
2,680
2,934
2.59
2.28
795
1,092
1,635
1,688
74
65
0.05
0.06
1.07
1.68
1,640
225
2,284
255
7.53
0.55
992
3,753
1,941
1,647
89
79
0.05
0.23
1.12
4.77
62 In Chapter 6 of this FEA, OSHA explained why
it was not including costs for respiratory protection
as part of the estimated costs of the final standard.
The Agency notes that this feasibility determination
would not change with respect to any affected
industry even if OSHA attributed to the final
standard the respiratory-protection costs included
in the PEA. Using the PEA assumptions, and
updating unit-cost information for half masks and
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Establishments
Affected
firms as a
percentage
of total
(percent)
HEPA filters (based on currently available online
price quotes), OSHA finds that none of the
annualized costs for any NAICS code exceed the
Agency’s threshold of presumptive feasibility of one
percent of revenues. The annualized costs for only
one NAICS code, 236210 (Industrial Building
Construction), exceed the threshold of presumptive
feasibility of 10 percent of annual profits. The
overall annualized costs for this NAICS code would
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total roughly $2.8 million after including the costs
for respiratory protection; this figure represents 0.57
percent of annual revenue and 12.6 percent of
annual profit for this industry. However, for the
reasons stated above, the Agency believes that the
final standard would be feasible for this industry
even after including the respiratory-protection
costs.
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TABLE IV–16—POTENTIAL ECONOMIC IMPACTS FOR ENTITIES AFFECTED BY THE FINAL STANDARD FOR CONFINED SPACES
IN CONSTRUCTION—Continued
[2009 dollars]
Affected
NAICS
industry
code
Industry name
Firms
Total ........................................
Establishments
31,112
Affected
firms as a
percentage
of total
(percent)
Annualized
compliance
costs per
affected firm
6.27
1,939
36,066
Average profits per firm
($ thousands)
Annualized
costs as a
percentage
of affected
firm
revenues
(percent)
Annualized
costs as a
percentage
of affected
firm profits
(percent)
121
Average
revenues
per firm
($ thousands)
0.08
1.60
2,559
Source: U.S. Department of Labor, OSHA, Directorate of Standards and Guidance, Office of Regulatory Analysis-Safety.
Regulatory Flexibility Screening
Analysis
To determine if the Assistant
Secretary of Labor for Occupational
Safety and Health can certify that the
final standard for confined spaces in
construction will not have a significant
economic impact on a substantial
number of small entities, the Agency
applied long-standing screening tests to
consider minimum threshold effects of
the final standard on small entities. The
minimum threshold effects for this
purpose are annualized costs equal to
one percent of annual revenues, or
annualized costs equal to five percent of
annual profits, applied to each affected
industry. OSHA applied these screening
tests both to small entities and to very
small entities. For purposes of
certification, affected small entities or
very small entities in any affected
industry cannot exceed the minimum
threshold effects.
Table IV–17 shows that the
annualized costs of the standard do not
exceed one percent of annual revenues
for small entities in any affected
construction industry, but they do
exceed five percent of annual profits for
small entities in two construction
industries—NAICS 236210 (Industrial
Building Construction) and NAICS
238910 (Site Preparation Contractors).
Table IV–18 shows that the annualized
costs of the standard exceed one percent
of revenues and five percent of annual
profits for very small entities in NAICS
236210 (Industrial Building
Construction), and exceed five percent
of annual profits for very small entities
in two other construction industries—
NAICS 237130 (Power and
Communication Line and Related
Structures) and NAICS 238910 (Site
Preparation Contractors). OSHA is,
therefore, unable to certify that the final
standard will not have a significant
economic impact on a substantial
number of small entities in
construction, and must prepare a Final
Regulatory Flexibility Analysis (FRFA)
(see Chapter 8 below).
TABLE IV–17—POTENTIAL ECONOMIC IMPACTS FOR SMALL ENTITIES AFFECTED BY THE FINAL STANDARD FOR CONFINED
SPACES
[2009 dollars]
NAICS
industry
code
221310 ...
236115 ...
236116 ...
236118 ...
236210 ...
236220 ...
237110 ...
237130 ...
237310 ...
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237990 ...
238190 ...
238210 ...
238220 ...
238310 ...
Industry name
Water Supply and Irrigation Systems.
New Single-Family Housing Construction (except
Operative Builders).
New Multifamily Housing
Construction (except
Operative Builders).
Residential Remodelers ...
Industrial Building Construction.
Commercial and Institutional Building.
Water and Sewer Line and
Related Structures Construction.
Power and Communication Line and Related
Structures Construction.
Highway, Street, and
Bridge Construction.
Other Heavy and Civil Engineering Construction.
Other Foundation, Structure, and Building Exterior Contractors.
Electrical Contractors .......
Plumbing, Heating, and
Air-Conditioning Contractors.
Drywall and Insulation
Projects.
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Average compliance costs
per affected
firm
($)
Average revenues per firm
($ thousand)
Average profits per firm
($ thousand)
Costs as a
percentage
of affected
firm
revenues
Costs as a
percentage
of affected
firm profits
Cost as a
percentage
of overall
category
firm
revenues
Costs as a
percentage
of overall
category
firm profits
16
894
713
42
0.13
2.13
0.00
0.01
942
614
1,255
57
0.05
1.08
0.00
0.02
719
742
3,600
163
0.02
0.46
0.00
0.08
9,384
24
837
21,999
736
2,827
33
128
0.11
0.78
2.51
17.18
0.01
0.01
0.24
0.11
4,398
1,334
4,950
224
0.03
0.60
0.00
0.06
2,248
2,203
2,462
147
0.09
1.50
0.02
0.25
95
7,347
3,012
180
0.24
4.08
0.00
0.08
2,738
1,795
4,304
258
0.04
0.70
0.01
0.19
579
884
2,085
125
0.04
0.71
0.00
0.08
1,100
973
936
43
0.10
2.27
0.02
0.44
1,424
1,700
616
853
1,037
1,130
47
44
0.06
0.08
1.31
1.96
0.00
0.00
0.02
0.03
1,119
613
1,127
52
0.05
1.19
0.00
0.06
Affected
firms
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TABLE IV–17—POTENTIAL ECONOMIC IMPACTS FOR SMALL ENTITIES AFFECTED BY THE FINAL STANDARD FOR CONFINED
SPACES—Continued
[2009 dollars]
NAICS
industry
code
238910 ...
Average compliance costs
per affected
firm
($)
Average revenues per firm
($ thousand)
Average profits per firm
($ thousand)
Costs as a
percentage
of affected
firm
revenues
Costs as a
percentage
of affected
firm profits
Cost as a
percentage
of overall
category
firm
revenues
Costs as a
percentage
of overall
category
firm profits
167
3,352
1,223
58
0.27
5.74
0.00
0.02
26,653
1,167
1,533
71
0.08
1.64
0.00
0.09
Affected
firms
Industry name
Site Preparation Contractors.
Total ...........................
* Source: U.S. Department of Labor, OSHA, Directorate of Standards and Guidance, Office of Regulatory Analysis—Safety.
TABLE IV–18—POTENTIAL ECONOMIC IMPACTS FOR VERY SMALL ENTITIES (FEWER THAN 20 EMPLOYEES) AFFECTED BY
THE FINAL STANDARD FOR CONFINED SPACES
[2009 dollars]
Average compliance costs
per affected
firm
($)
Average revenues per affected firm
($ thousand)
Average profits per affected
firm
($ thousand)
Costs as a
percentage
of affected
firm
revenues
Costs as a
percentage
of affected
firm profits
Cost as a
percentage
of overall
category
firm
revenues
Costs as a
percentage
of overall
category
firm profits
11
794
532
31
0.15
2.54
0.00
0.01
580
607
977
44
0.06
1.37
0.00
0.01
271
644
1,650
75
0.04
0.86
0.00
0.06
7,104
611
545
25
0.11
2.47
0.01
0.18
8
21,999
1,471
67
1.45
31.92
0.00
0.08
1,327
1,317
2,273
103
0.06
1.28
0.00
0.05
642
2,182
1,105
66
0.20
3.30
0.01
0.19
17
6,232
945
57
0.66
11.02
0.00
0.05
601
1,766
1,814
109
0.10
1.63
0.01
0.12
166
879
1,007
60
0.09
1.46
0.00
0.06
706
607
552
25
0.11
2.40
0.01
0.32
544
655
607
842
575
622
26
24
0.11
0.14
2.33
3.51
0.00
0.00
0.02
0.03
336
607
599
27
0.10
2.21
0.00
0.04
64
3,312
681
33
0.49
10.18
0.00
0.02
13,032
863
827
38
0.10
2.27
0.00
0.07
Annual
number of
affected
firms
NAICS
industry code
Industry name
221310 ...........
Water Supply and Irrigation Systems.
New Single-Family
Housing Construction (except Operative Builders).
New Multifamily
Housing Construction (except Operative Builders).
Residential Remodelers.
Industrial Building
Construction.
Commercial and Institutional Building.
Water and Sewer
Line and Related
Structures Construction.
Power and Communication Line and
Related Structures
Construction.
Highway, Street, and
Bridge Construction.
Other Heavy and
Civil Engineering
Construction.
Other Foundation,
Structure, and
Building Exterior
Contractors.
Electrical Contractors
Plumbing, Heating,
and Air-Conditioning Contractors.
Drywall and Installation Projects.
Site Preparation Contractors.
236115 ...........
236116 ...........
236118 ...........
236210 ...........
236220 ...........
237110 ...........
237130 ...........
237310 ...........
237990 ...........
238190 ...........
238210 ...........
238220 ...........
238310 ...........
238910 ...........
Total ......................
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Source: U.S. Department of Labor, OSHA, Directorate of Standards and Guidance, Office of Regulatory Analysis—Safety.
8. Final Regulatory Flexibility Analysis
The Regulatory Flexibility Act, as
amended in 1996 and 2010, requires
that an agency prepare a final regulatory
flexibility analysis for any rule expected
to have a significant economic impact
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on a substantial number of small entities
(5 U.S.C. 601–612). Under the
provisions of the law, such an analysis
must contain:
1. A description of the impact of the
rule on small entities;
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2. A statement of the need for, and
objectives of, the rule;
3. The response of the agency to any
comments filed by the Chief Counsel for
Advocacy of the Small Business
Administration in response to the
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proposed rule, and a detailed statement
of any change made to the proposed rule
in the final rule as a result of the
comments;
4. A statement of the significant issues
raised by public comments in response
to the initial regulatory flexibility
analysis, a statement of the assessment
of the agency of such issues, and a
statement of any changes made in the
proposed rule as a result of such
comments;
5. A description, and estimate, of the
number of small entities to which the
rule will apply, or an explanation of
why no such estimate is available;
6. A description of the projected
reporting, recordkeeping, and other
compliance requirements of the rule,
including an estimate of the classes of
small entities that will be subject to the
requirements, and the type of
professional skills necessary for
preparation of the report or record; and
7. A description of the steps the
agency took to minimize the significant
economic impact on small entities
consistent with the stated objectives of
the applicable statutes, including a
statement of the factual, policy, and
legal reasons for selecting the alternative
adopted in the final rule, and why the
agency rejected each of the other
significant alternatives to the rule
considered by the agency which affect
the impact on small entities.
1. A Description of the Impact of the
Final Rule on Small Entities
As shown in Table IV–19, the
estimated total annualized cost of the
final standard for all affected small
entities in construction (as defined by
SBA) is $31.1 million. Also shown in
that table are annualized costs per
affected small entity by industry. These
costs per affected small entity range
from $613 for NAICS 238310 (Drywall
and Insulation Projects) to $21,999 for
NAICS 236210 (Industrial Building
Construction). The average yearly cost
per affected small entity is $1,167.
To assess the potential economic
impact of the final rule on affected small
entities, OSHA calculated the ratios of
these annualized compliance costs to
yearly profits and to yearly revenues.
These percentages for each construction
industry are in Table IV–17 (see Chapter
7 of this FEA). As shown, among small
entities potentially affected by the final
rule, the annualized cost of the rule is
equal to approximately 0.07 percent of
annual revenues. In no construction
industry does the annualized cost of the
rule for affected small entities exceed
0.7 percent of annual revenues.
Accordingly, on average, prices for
affected small entities in construction
would have to increase by about 0.08
percent to completely offset the cost of
the final rule. For affected small entities
in the most impacted industry, NAICS
236210 (Industrial Building
Construction), prices would have to
increase by about 0.8 percent to
completely offset the cost of the final
rule.
Only to the extent that such price
increases are not possible would there
be any effect on the average profits of
affected small entities. Even in the
unlikely event that entities could not
pass the costs of the final rule through
in the form of higher prices, the entities
could absorb the costs completely
through a reduction in profits of 1.64
percent, on average, for affected small
entities (as shown in Table IV–17). In all
but two of the affected industries, the
affected small entities could absorb the
compliance costs completely through an
average reduction in profits of less than
5 percent; the reduction in profits
would not exceed 17.2 percent for
affected small entities in any of the
construction industries, again assuming
these entities could not pass through the
costs.
To further ensure that OSHA fully
analyzed and considered the potential
impacts on small entities, the Agency
separately examined the potential
impacts of the final standard on very
small entities, defined as those entities
with fewer than 20 employees. As
shown in Table IV–20, OSHA estimated
the total annualized cost of the final
standard for all affected very small
entities in construction to be $11.2
million. Also shown in that table are
annualized costs per affected small
entity by industry. These costs per
affected small entity range from $607 for
several construction industries to
$21,999 for NAICS 236210 (Industrial
Building Construction). The average
yearly cost per affected small entity is
$862.
To assess the potential economic
impact of the final standard on very
small entities, OSHA calculated the
ratios of the annualized costs of the final
rule to yearly profits and to yearly
revenues. These percentages for each
affected construction industry are in
Table IV–18. As shown, among very
small entities potentially affected by the
final rule, the annualized cost of the
rule is equal to approximately 0.10
percent of annual revenues. In no
construction industry does the
annualized cost of the rule for affected
very small entities exceed 1.45 percent
of annual revenues. Accordingly, on
average, prices for affected very small
entities in construction would have to
increase by about 0.10 percent to
completely offset the cost of the final
rule. For affected very small entities in
the most impacted industry, NAICS
236210 (Industrial Building
Construction), prices would have to
increase by about 1.45 percent to
completely offset the cost of the final
rule.
TABLE IV–19—ANNUALIZED COMPLIANCE COSTS ASSOCIATED WITH THE FINAL CONFINED-SPACES STANDARD FOR SMALL
ENTITIES, BY NAICS INDUSTRY
[2009 dollars]
NAICS
industry
code
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221310
236115
236116
236118
236210
236220
237110
Industry name
Affected firms
Water Supply and Irrigation Systems
New Single-Family Housing Construction.
New Multifamily Housing Construction.
Residential Remodelers ....................
Industrial Building Construction .........
Commercial and Institutional Building
Water and Sewer Line and Related
Structures Construction.
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Affected firms as
a percentage of
total
(percent)
Affected
establishments
Annualized
compliance
costs
Cost per firm
16
942
18
953
0.5
1.5
$14,299
578,128
$894
614
719
728
17.1
533,573
742
9,384
24
4,398
2,248
9,468
24
4,463
2,272
9.4
0.7
10.9
16.8
7,853,017
527,967
5,868,843
4,956,577
837
21,999
1,334
2,205
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25503
TABLE IV–19—ANNUALIZED COMPLIANCE COSTS ASSOCIATED WITH THE FINAL CONFINED-SPACES STANDARD FOR SMALL
ENTITIES, BY NAICS INDUSTRY—Continued
[2009 dollars]
NAICS
industry
code
237130
237310
237990
238190
238210
238220
238310
238910
Industry name
Power and Communication Line and
Related Structures Construction.
Highway, Street, and Bridge Construction.
Other Heavy and Civil Engineering
Const..
Other Foundation, Structure, and
Building Exterior Contractors.
Electrical Contractors ........................
Plumbing, Heating, and Air-Conditioning Contractors.
Drywall and Insulation Projects .........
Site Preparation Contractors .............
Affected firms as
a percentage of
total
(percent)
Affected
establishments
Affected firms
Annualized
compliance
costs
Cost per firm
95
1.9
697,984
7,347
2,738
2,784
26.8
4,915,948
1,795
579
584
11.6
513,278
886
1,100
1,112
19.5
1,069,906
973
1,424
1,700
1,446
1,722
1.8
1.7
877,857
1,450,572
616
853
1,119
167
1,130
169
5.3
0.4
686,015
559,703
613
3,352
26,653
Total ...............................................
112
26,985
5.4
31,103,667
1,167
Source: U.S. Department of Labor, OSHA, Directorate of Standards and Guidance, Office of Regulatory Analysis-Safety.
TABLE IV–20—ANNUALIZED COMPLIANCE COSTS ASSOCIATED WITH THE FINAL CONFINED-SPACES STANDARD FOR VERY
SMALL ENTITIES, BY NAICS INDUSTRY
[2009 dollars]
NAICS
industry
code
221310
236115
236116
236118
236210
236220
237110
237130
237310
237990
238190
238210
238220
238310
238910
Affected
firms
Industry name
Water Supply and Irrigation Systems
New Single-Family Housing Construction.
New Multifamily Housing Construction.
Residential Remodelers ....................
Industrial Building Construction ........
Commercial and Institutional Building
Water and Sewer Line and Related
Structures Construction.
Power and Communication Line and
Related Structures Construction.
Highway, Street, and Bridge Construction.
Other Heavy and Civil Engineering
Const.
Other Foundation, Structure, and
Building Exterior Contractors.
Electrical Contractors ........................
Plumbing, Heating, and Air-Conditioning Contractors.
Drywall and Insulation Projects .........
Site Preparation Contractors .............
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Affected firms as
a percentage of
total
Annualized
compliance costs
($)
Cost per firm
($)
11
580
11
580
0.3
1.0
8,738
351,851
794
607
271
271
7.2
174,635
644
7,104
8
1,327
642
7,105
8
1,329
642
7.3
0.2
3.9
5.7
4,342,753
175,989
1,747,634
1,400,582
611
21,999
1,317
2,182
17
17
0.4
105,944
6,232
601
601
7.5
1,061,237
1,766
166
166
3.8
145,898
879
706
706
13.5
428,448
607
544
655
544
655
0.8
0.7
330,259
551,757
607
842
336
64
336
64
1.8
0.2
203,983
211,959
607
3,312
13,032
Total ...............................................
Only to the extent that such price
increases are not possible would there
be any effect on the average profits of
affected very small entities. Even in the
unlikely event that the entities could
not pass through the costs of the final
rule in the form of higher prices, small
affected entities could absorb the costs
completely through an average
reduction in profits of 2.27 percent (as
shown in Table IV–18). In all but three
Affected
establishments
13,035
2.9
11,241,667
863
of the affected industries, the affected
small entities could absorb the
compliance costs completely through an
average reduction in profits of less than
5 percent; the reduction in profits
would not exceed 32 percent for
affected small entities in any of the
construction industries, again assuming
that no costs could be passed through.
In practice, given the small
incremental increases in prices
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potentially resulting from compliance
with the final standard and the lack of
readily available substitutes (including
foreign competition) for the products
and services provided by the covered
construction industry sectors, OSHA
believes demand to be sufficiently
inelastic in each affected industry to
enable small and very small entities to
substantially offset variable compliance
costs through minor price increases
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without experiencing any significant
reduction in total revenues or in net
profits.
Further, it is important to note that
cost assignment to entities by size is
approximate, and in some instances
larger firms may bear the burden, so the
impacts on individual small entities is
suggestive only, not definitive. Indeed,
the limitations of available economic
data and the Dodge report data make it
impossible to assign small projects to
small firms in a way that represents
economic reality. Because OSHA did
not assign fractions of projects to firms,
it is likely that the Agency
overestimated the costs of the final rule
on small and very small entities.
Accordingly, OSHA believes that it
overstated its estimates of impacts on
small entities.
With this important caveat, the
Agency notes that there are industries in
which impacts are above the
conventional thresholds of 1 percent of
revenue and 5 percent of profit for some
small and very small entities. However,
only a few firms account for the impacts
as shown from the fact that the costs are
negligible when expressed as a
percentage of overall revenues and
profits for the industry-size class (see
the last two columns of Table IV–17 and
Table IV–18).
2. A Statement of the Need for, and
Objectives of, the Rule
The primary objective of the final rule
is to provide an increased degree of
occupational safety for employees
performing construction work in
confined spaces. Another objective of
the final rule, in support of the primary
objective, is to provide updated, clear,
and comprehensive safety standards
regarding construction work in confined
spaces to the relevant employers,
employees, and interested members of
the public. The estimated 5.2 fatalities
and 780 injuries annually that the final
rule would prevent (assuming full
compliance) demonstrate the need for
the final rule.
The legal basis for the rule is the
responsibility given the Department of
Labor through the Occupational Safety
and Health (OSH) Act of 1970. The OSH
Act authorizes and obligates the
Secretary of Labor to promulgate
mandatory occupational safety and
health standards as necessary ‘‘to assure
so far as possible every working man
and woman in the Nation safe and
healthful working conditions and to
preserve our human resources.’’ 29
U.S.C. 651(b). Additional legal authority
for this final rule includes 29 U.S.C.
653, 655(b), and 657; and 40 U.S.C.
3701.
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3. The Response of the Agency to Any
Comments Filed by the Chief Counsel
for Advocacy of the Small Business
Administration in Response to the
Proposed Rule, and a Detailed
Statement of Any Change Made to the
Proposed Rule in the Final Rule as a
Result of the Comments
In addition to the issues raised by the
SBREFA panel, SBA’s Office of
Advocacy provided recommendations
for OSHA to consider (OSHA–2007–
0026–0119.1). The Agency provides the
following responses to these
recommendations (quoted verbatim):
SBA Recommendation 1: While the
proposed rule is much improved from
the draft version of the rule reviewed
during the SBREFA process, it is still
very complicated and difficult to
understand. Advocacy recommends that
OSHA try to further streamline the rule
and harmonize it as much as possible
with the existing general industry
standard (or consider adopting a single
rule for both industries). Advocacy
notes that many employers operate on
work sites that include both general
industry and construction confined
spaces and employees may encounter
both types of confined spaces in close
proximity. As many of the SERs pointed
out to the SBAR Panel, having two
separate standards could double the cost
of their safety and training programs
(especially if they contract out these
services) and cause unnecessary
confusion on the job site. Further, the
distinction between ‘‘maintenance’’ and
‘‘construction’’ work in various facilities
is often unclear. Having two different
standards increases the complexity of
compliance and could ultimately
increase risk. This was, and remains, a
key concern of the SERs.
OSHA’s Response: When possible,
OSHA adapted requirements in the
general industry confined spaces
standard to construction using parallel
language. For example, § 1926.1205,
Permitting process, in the final standard
contains provisions virtually identical
to those in § 1910.146(e), Permit system,
in the general industry standard, rather
than retaining the distinct classification
system that OSHA proposed. However,
the final standard for confined spaces in
construction bears important
distinctions from the general industry
standard due to:
• Advances in safety systems (for
example, monitoring procedures that
detect increases in atmospheric hazards,
as required in § 1926.1204(c)(5));
• Unique conditions associated with
construction, such as greater emphasis
on assessing hazards at sewer worksites
and the need for information exchange
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in a complex multi-employer
environment;
• Requests from stakeholders and
commenters to allow greater flexibility
for employers, such as permitting
employers to enter a confined space
under the alternative procedures
specified by final § 1926.1203(e) if they
isolate physical hazards within a space,
or permitting employers to suspend a
permit (rather than cancelling it) in
response to certain temporary changes
in conditions;
• Improvements in language for
clarity and enforcement considerations.
SBA Recommendation 2: Advocacy is
concerned about the host-employer and
controlling-contractor provisions of the
proposed rule and remains
apprehensive about OSHA’s imposition
of legal obligations on employers for
employees who are not their own. This
policy seems to emanate from OSHA’s
Multi-Employer Citation Policy, which
has never been promulgated as a rule
and whose legal status has been called
into question in the recent Secretary of
Labor v. Summit Contractors, Inc.
decision. Advocacy filed a similar
comment about the host-contractor
provisions in OSHA’s proposed Electric
Power Transmission rule. Some of the
key concerns of small businesses are
that host employers may not even be
engaged in construction work (and
therefore have no expertise on confined
spaces), and that contractors may be
working in remote locations with no
interaction or oversight. Advocacy
appreciates that OSHA has tried to limit
the scope of this provision by only
requiring host-employers or controlling
contractors to provide information they
actually possess (as opposed to having
to obtain information they do not
already have); however, these
provisions are highly controversial and
are opposed by many small businesses.
Advocacy recommends that OSHA
eliminate these requirements from the
rule.
OSHA’s Response: The U.S. Court of
Appeals