Standard for the Flammability (Open Flame) of Mattresses and Mattress/Foundation Sets; Notice of Proposed Rulemaking, 2470-2514 [05-416]
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Federal Register / Vol. 70, No. 9 / Thursday, January 13, 2005 / Proposed Rules
CONSUMER PRODUCT SAFETY
COMMISSION
16 CFR Part 1633
Standard for the Flammability (Open
Flame) of Mattresses and Mattress/
Foundation Sets; Notice of Proposed
Rulemaking
Consumer Product Safety
Commission.
ACTION: Notice of proposed rulemaking.
AGENCY:
SUMMARY: The Commission is proposing
a flammability standard under the
authority of the Flammable Fabrics Act
that would address open flame ignition
of mattresses and mattress and
foundation sets (‘‘mattresses/sets’’). The
Commission currently has a
flammability standard that addresses
ignition of mattresses by cigarettes.
However, that standard does not address
mattress fires ignited by open flames.
The proposed standard sets performance
requirements based on research
conducted by the National Institute of
Standards and Technology (‘‘NIST’’).
Mattresses/sets that comply with the
proposed requirements will generate a
smaller size fire, thus reducing the
possibility of flashover occurring. These
improved mattresses should result in
significant reductions in deaths and
injuries associated with mattress fires.
Due to the interaction of mattresses and
bedclothes discussed herein, elsewhere
in today’s Federal Register the
Commission is publishing an advance
notice of proposed rulemaking to begin
rulemaking on bedclothes.
DATES: Written comments in response to
this document must be received by the
Commission not later than March 29,
2005. Comments on elements of the
proposed rule that, if issued in final
form would constitute collection of
information requirements under the
Paperwork Reduction Act, may be filed
with the Office of Management and
Budget (‘‘OMB’’) and with the
Commission. Comments will be
received by OMB until March 14, 2005.
ADDRESSES: Comments should be filed
by email to cpsc-os@cpsc.gov.
Comments also may be filed by
telefacsimile to (301)504–0127 or
mailed, preferably in five copies, to the
Office of the Secretary, Consumer
Product Safety Commission,
Washington, DC 20207–0001, or
delivered to the Office of the Secretary,
Consumer Product Safety Commission,
Room 502, 4330 East-West Highway,
Bethesda, Maryland; telephone (301)
504–7530. Comments should be
captioned ‘‘Mattress NPR.’’
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Comments to OMB should be directed
to the Desk Officer for the Consumer
Product Safety Commission, Office of
Information and Regulatory Affairs,
OMB, Washington, DC 20503. The
Commission asks commenters to
provide copies of such comments to the
Commission’s Office of the Secretary,
with a caption or cover letter identifying
the materials as comments submitted to
OMB on the proposed collection of
information requirements for the
proposed mattress standard.
FOR FURTHER INFORMATION CONTACT:
Margaret Neily, Directorate for
Engineering Sciences, Consumer
Product Safety Commission,
Washington, DC 20207; telephone (301)
504–7530.
SUPPLEMENTARY INFORMATION:
A. Background
On October 11, 2001, the Commission
issued an advance notice of proposed
rulemaking (‘‘ANPR’’) concerning the
open flame ignition of mattresses/
bedding. 66 FR 51886. The ANPR was
the result of the staff’s evaluation of fire
data over the course of several years and
petitions filed by Whitney Davis,
director of the Children’s Coalition for
Fire-Safe Mattresses (‘‘CCFSM’’).
Although the Commission has an
existing mattress flammability standard
that addresses ignition by cigarettes, 16
CFR Part 1632, no current Commission
standard directly addresses open flame
ignition of mattresses. The most
common open flame sources are
lighters, candles and matches. The
Commission is now issuing a notice of
proposed rulemaking (‘‘NPR’’)
proposing a flammability standard to
address open flame ignition of
mattresses.1
Characteristics of mattress/bedding
fires. A burning mattress generally
provides the biggest fuel load in a
typical bedroom fire. Once the mattress
ignites, the fire develops rapidly
creating dangerous flashover conditions.
Flashover is the point at which the
entire contents of a room are ignited
simultaneously by radiant heat, making
conditions in the room untenable and
safe exit from the room impossible. At
flashover, room temperatures typically
exceed 600–800 C (approximately 1100–
1470 F). In these conditions, carbon
monoxide rapidly increases, and oxygen
is rapidly depleted. Mattress fires that
lead to flashover are responsible for
about two-thirds of all mattress
fatalities. This accounts for nearly all of
1 Commissioner Thomas H. Moore issued a
statement, a copy of which is available from the
Commission’s Office of the Secretary or from the
Commission’s Web site, https://www.cpsc.gov.
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the fatalities that occur outside the room
where the fire originated and about half
of the fatalities that occur within the
room of origin. A mattress that reduces
the likelihood of reaching flashover
could significantly reduce deaths and
injuries associated with bedroom fires.
[1&2] 2
The size of a fire is measured by its
rate of heat release. A heat release rate
of approximately 1,000 kilowatts
(‘‘kW’’) leads to flashover in a typical
room. Tests of twin size mattresses of
traditional construction (complying
with the existing mattress standard in
16 CFR 1632) without bedclothes have
measured peak heat release rates that
exceeded 2,000 kW in less than 5
minutes. Tests of traditional king size
mattresses measured nearly double that
peak rate of heat release. [2]
Fire modeling and available test data
show that as a room fire grows, a layer
of accumulating hot gases and smoke
thickens downward from the ceiling.
For fires exceeding 600 kW, this layer
typically descends to less than three feet
from the floor. Heat release rates
exceeding 500 kW are generally
considered to pose a serious threat of
incapacitation and of igniting nearby
items. [2]
The objective of the proposed
standard is to limit the size of mattress/
bedding fires to below 1,000 kW for a
period of time by reducing the heat
release from the bed, specifically the
mattress and foundation, and by
reducing the likelihood that other
objects in the room will become
involved in the fire.
Research has shown that the mattress,
foundation and bedclothes operate as a
system in bedroom fires. Often the first
item ignited is bedclothes, which then
ignite the mattress. The gas burners
used in the proposed test method are
designed to represent burning
bedclothes. Research has indicated that
bedclothes themselves can contribute
significantly to fires, even reaching heat
release rates of up to 800 kW. [2&13]
Because of the role of bedclothes in
mattress fires, the Commission is
initiating a rulemaking on bedclothes
through an ANPR that is published
elsewhere in today’s Federal Register.
The Commission received numerous
comments on the mattress ANPR
concerning the role of bedclothes and
the need for a rule addressing them.
These comments are discussed in
section J of this document.
2 Numbers in brackets refer to documents listed
at the end of this notice. They are available from
the Commission’s Office of the Secretary (see
‘‘Addresses’’ section above) or from the
Commission’s Web site (https://www.cpsc.gov/
library/foia/foia.html).
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NIST research. The industry’s Sleep
Products Safety Council (‘‘SPSC’’), an
affiliate of the International Sleep
Products Association (‘‘ISPA’’),
sponsored a research program at the
National Institute of Standards and
Technology (‘‘NIST’’) to better
understand mattress/bedding fires and
establish the technological basis for
future performance requirements of a
standard. NIST has conducted extensive
research, which has become the basis
for California’s open flame mattress
standard (Technical Bulletin or ‘‘TB’’
603) and for the Commission’s proposed
standard.
The NIST research showed that a fullscale test is the most reliable method for
measuring fire performance of
mattresses/sets because they contain
many materials in a complex
construction. Because the order of
materials, method of assembly, quantity
of materials, and quality of construction,
among other factors, can affect fire
behavior, the complete product may
perform differently in a fire than the
individual components would. Based on
its research, NIST drafted a full-scale
test method for mattresses that uses a
pair of gas burners to represent burning
bedclothes as the ignition source. Both
the Commission’s proposed standard
and California’s TB 603, use this test
method. [1&2]
Overview of the proposed standard.
With certain exceptions explained in
section G below, the proposed standard
requires manufacturers to test
specimens of each of their mattress
prototypes (designs) before mattresses
based on that prototype may be
introduced into commerce. If a mattress
and foundation are offered for sale as a
set, the mattress must be tested with the
corresponding foundation. The
prototype specimens are tested using a
pair of gas burners as the ignition
source. The mattress and corresponding
foundation, if any, must not exceed a
200 kW peak heat release rate at any
time during the 30 minute test, and the
total energy released must be less than
15 megajoules (‘‘MJ’’) for the first 10
minutes of the test. The proposed
standard is discussed in greater detail in
section G of this document.
B. Statutory Authority
This proceeding is conducted
pursuant to Section 4 of the Flammable
Fabrics Act (‘‘FFA’’), which authorizes
the Commission to initiate proceedings
for a flammability standard when it
finds that such a standard is ‘‘needed to
protect the public against unreasonable
risk of the occurrence of fire leading to
death or personal injury, or significant
property damage.’’ 15 U.S.C. 1193(a).
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Section 4 also sets forth the process
by which the Commission may issue a
flammability standard. As required in
section 4(g), the Commission has issued
an ANPR. 66 FR 51886. 15 U.S.C.
1193(g). The Commission has reviewed
the comments submitted in response to
the ANPR and now is issuing a notice
of proposed rulemaking (‘‘NPR’’)
containing the text of the proposed rule
along with alternatives the Commission
has considered and a preliminary
regulatory analysis. 15 U.S.C. 1193(i).
The Commission will consider
comments provided in response to the
NPR and decide whether to issue a final
rule along with a final regulatory
analysis. 15 U.S.C. 1193(j). The
Commission cannot issue a final rule
unless it makes certain findings and
includes these in the regulation. The
Commission must find: (1) If an
applicable voluntary standard has been
adopted and implemented, that
compliance with the voluntary standard
is not likely to adequately reduce the
risk of injury, or compliance with the
voluntary standard is not likely to be
substantial; (2) that benefits expected
from the regulation bear a reasonable
relationship to its costs; and (3) that the
regulation imposes the least
burdensome alternative that would
adequately reduce the risk of injury. 15
U.S.C. 1193(j)(2). In addition, the
Commission must find that the standard
(1) is needed to adequately protect the
public against the risk of the occurrence
of fire leading to death, injury or
significant property damage, (2) is
reasonable, technologically practicable,
and appropriate, (3) is limited to fabrics,
related materials or products which
present unreasonable risks, and (4) is
stated in objective terms. 15 U.S.C.
1193(b).
C. The Product
The proposed standard applies to
mattresses and mattress and foundation
sets (‘‘mattresses/sets’’). Mattress is
defined as a resilient material, used
alone or in combination with other
materials, enclosed in a ticking and
intended or promoted for sleeping upon.
This includes adult mattresses, youth
mattresses, crib mattresses (including
portable crib mattresses), bunk bed
mattresses, futons, flip chairs without a
permanent back or arms, sleeper chairs,
and water beds and air mattresses if
they contain upholstery material
between the ticking and the mattress
core. Mattresses used in items of
upholstered furniture such as
convertible sofa bed mattresses are also
included. Not included as mattresses
are: sleeping bags, mattress pads, or
other items used on top of the bed, or
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upholstered furniture which does not
contain a mattress. However, the
Commission could decide to address
mattress pads or other top of the bed
items in its rulemaking on bedclothes.
Under the proposed standard, the
mattress must be tested with its
corresponding foundation if the
mattress and foundation are offered for
sale as a set. A foundation is a ticking
covered structure used to support a
mattress.
According to ISPA, the top four
producers of mattresses and foundations
account for almost 60 percent of total
U.S. production. In 2001, there were 639
establishments producing mattresses in
the U.S. [10]
Mattresses and foundations are
typically sold as sets. However, more
mattresses are sold annually than
foundations; some mattresses are sold as
replacements for existing mattresses
(without a new foundation) or are for
use in platform beds or other beds that
do not require a foundation. ISPA
estimated that the total number of U.S.
conventional mattress shipments was
21.5 million in 2002, and is estimated
to be 22.1 million in 2003 and 22.8
million in 2004. These estimates do not
include futons, crib mattresses, juvenile
mattresses, sleep sofa inserts, or hybrid
water mattresses. These ‘‘nonconventional’’ sleep surfaces are
estimated to comprise about 10 percent
of total annual shipments of all sleep
products. The value of mattress and
foundation shipments in 2002,
according to ISPA, was $3.26 and $1.51
billion respectively. [10]
The expected useful life of mattresses
can vary substantially, with more
expensive models generally
experiencing the longest useful lives.
Industry sources recommend
replacement of mattresses after 10 to 12
years of use, but do not specifically
estimate the average life expectancy. In
the 2001 mattress ANPR, the
Commission estimated the expected
useful life of a mattress at about 14
years. To estimate the number of
mattresses in use for analysis of the
proposed rule, the Commission used
both a 10 year and 14 year average
product life. Using CPSC’s Product
Population Model, the Commission
estimates the number of mattresses
currently in use (i.e., in 2004) to be 233
million mattresses using a ten-year
average product life, and 302.6 million
mattresses using a fourteen-year average
product life. [8&10]
According to industry sources, queen
size mattresses are the most commonly
used. In 2002, queen size mattresses
were used by 34 percent of U.S.
consumers. Twin and twin XL are used
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by 31.2 percent of U.S. consumers,
followed by full and full XL (21
percent), king and California king (11
percent), and all other sizes (2.6
percent). The average manufacturing
price in 2002 was $152 for a mattress
and $86 for a foundation. Thus, the
average manufacturing price of a
mattress/foundation set was about $238
in 2002. Although there are no readily
available data on average retail prices
for mattress/foundation sets by size,
ISPA reports that sets selling under
$500 represent 40.7 percent of the
market. Sets selling for between $500
and $1000 represent 39.2 percent of the
market. [10]
The top four manufacturers of
mattresses and foundations operate
about one-half of the 639 U.S.
establishments producing these
products. The remainder of the
establishments are operated by smaller
firms. According to the Statistics of U.S.
Businesses Census Bureau data for 2001,
there were 557 mattress firms operating
these 639 establishments. According to
the same data source, all but twelve
mattress firms had less than 500
employees. If one considers a firm with
fewer than 500 employees to be a small
business, then 97.8 percent (557–12/
557) of all mattress firms are small
businesses. [9&10] The potential impact
of the proposed standard on these small
businesses is discussed in section M of
this document.
D. Risk of Injury
Annual estimates of national fires and
fire losses involving ignition of a
mattress or bedding are based on data
from the U.S. Fire Administration’s
National Fire Incident Reporting System
(‘‘NFIRS’’) and the National Fire
Protection Administration’s (‘‘NFPA’’)
annual survey of fire departments. The
most recent national fire loss estimates
indicated that mattresses and bedding
were the first items to ignite in 19,400
residential fires attended by the fire
service annually during 1995–1999.
These fires resulted in 440 deaths, 2,230
injuries and $273.9 million in property
loss each year. Of these, the staff
considers an estimated 18,500 fires, 440
deaths, 2,160 injuries, and $259.5
million property loss annually to be
addressable by the proposed standard.
Addressable means the incidents were
of a type that would be affected by the
proposed standard solely based on the
characteristics of the fire cause (i.e., a
fire that ignited a mattress or that
ignited bedclothes which in turn ignited
the mattress). For example, an incident
that involved burning bedclothes and
occurred in a laundry room would not
be considered addressable. [3]
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Among the addressable casualties,
open flame fires accounted for about
140 deaths (32 percent) and 1,050
injuries (49 percent) annually. Smoking
fires accounted for 210 deaths (48
percent) and about 640 injuries (30
percent) annually. Children younger
than age 15 accounted for an estimated
120 addressable deaths (27 percent) and
500 addressable injuries (23 percent)
annually. Adults age 65 and older
accounted for an estimated 120
addressable deaths (27 percent) and 250
addressable injuries (12 percent)
annually. [3]
E. NIST Research
Overview. NIST has conducted
extensive research on mattress/bedding
fires for SPSC and the Commission.
SPSC sponsored several phases of
research at NIST to gain an
understanding of the complex fire
scenario involving mattresses and to
develop an effective test method to
evaluate a mattress’s performance when
it is exposed to an open flame ignition
source. The first phase of the research
program, known as Flammability
Assessment Methodology for Mattresses,
involved four main objectives: (1)
Evaluating the behavior of various
combinations of bedclothes, (2)
characterizing the heat impact imposed
on a mattress by bedclothes, (3)
developing burners to simulate burning
bedclothes, and (4) testing the burners
on different mattress designs to ensure
their consistency. NIST’s findings,
published in NISTIR 6498, established
the basis for an appropriate test method
and the next phase of the research
program. [2] 3
Phase 2 of the NIST research focused
on (1) analyzing the hazard by
estimating the peak rate of heat release
from a mattress with an improved
design, (2) measuring a burning
mattress’s ability to involve nearby
items in the room, and (3) assessing (in
a limited way) bedclothes and their
contribution to mattress fire hazards.
This testing used mattresses with
improved flammability properties while
the flammability properties of
bedclothes remained unchanged. [2]
The findings from Phase 2 are detailed
in NIST Technical Note 1446,
Estimating Reduced Fire Risk Resulting
from an Improved Mattress
Flammability Standard.
Bedclothes. During phase 2, NIST
conducted tests on twin and king size
mattresses with corresponding size
bedclothes. In some tests, the bedclothes
contributed up to 400 kW to the fire.
3 NIST publications can be found at NIST’s Web
site, (https://fire.nist.gov/bfrlpubs/).
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NIST had previously estimated that a
heat release rate that may cause
flashover for an ordinary sized room is
about 1000 kW. Thus, a mattress that
contributes more than 500 kW at the
same time as bedclothes are
contributing 400 kW could lead to
flashover. NIST conducted additional
tests concerning bedclothes for CPSC,
which are discussed later in this
section. [2]
Other objects in the same room. Part
of the NIST study assessed the potential
of a bed fire to ignite other objects in the
same room. Other objects become
involved by either direct flame
impingement or by fire generated
radiation. Although the location of
objects in a bedroom is highly variable,
their potential involvement is
significantly influenced by their shape
and properties relating to ease of
ignition. NIST concluded from this
research that further reducing the heat
release rate from the bed could reduce
the potential for ignition of other objects
and therefore reduce their contribution
to the overall heat release rate. [2]
Modeling. NIST used fire modeling to
explore the effect that heat and toxic
gases from bed fires can have
throughout a home. Fire modeling is an
analytical tool that uses mathematical
calculations to predict real-world fire
behavior. NIST used this modeling to
corroborate test data exploring the
predicted levels of heat and toxic gases
for the room of origin and outside the
room of origin. The modeling suggested
that untenable fire conditions would
occur within the room, with little
difference between a small and large
room, at 10 minutes and 25 MJ. [2]
Gas burners’ correspondence to
bedclothes. In addition to the research
discussed above, NIST conducted
separate studies for CPSC. One series of
tests evaluated improved mattress
designs and further supported the
correlation between full scale mattress
tests with the NIST gas burners and
actual bedclothes. The study, NISTIR
7006–Flammability Test of Full-Scale
Mattresses: Gas Burners Versus Burning
Bedclothes, found that mattress designs
showing good performance when tested
with burners also exhibited significantly
improved performance when tested
with burning bedclothes. [2]
Interaction between mattresses and
bedclothes. NIST’s work for CPSC also
reinforced observations from previous
NIST research on the interaction
between the mattress and bedclothes.
NISTIR 7006. Tests on improved
mattress designs with burning
bedclothes as the ignition source tend to
have two distinct heat release rate
peaks. The first peak is predominantly
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from the burning bedclothes, while the
second is predominantly from the
mattress and foundation. In tests of good
performing mattress designs, NIST
found the second peak (i.e., from the
mattress/foundation) to be comparable
or lower than the first peak (i.e., from
the bedclothes) and to occur appreciably
later. [2]
Mattress size. In another study
conducted by NIST in 2004 for CPSC,
NIST found that a twin size mattress
made in a design that yields a very low
peak heat release rate (less than 50 kW)
tested with gas burners behaves
essentially the same as a queen or king
size mattress of the same design.
Mattress designs that yield a moderate
heat release rate peak (greater than 100
kW, but less than 200 kW) tend to
behave the same for the first 30 minutes
in twin size and king size. After ignition
with the burners, the fire is localized
(i.e., its spread is limited) and is not
affected by the mattress size. [2]
NIST evaluated the same mattress
designs and sizes with burning
bedclothes. NIST found the mattress
size to have an apparent effect during
these tests due to the differences in the
size and fuel load of bedclothes. In tests
of ‘‘well performing’’ mattress designs
with burning bedclothes, the early heat
release rate peak when testing a king
size mattress was triple that when
testing a twin size mattress. This was
driven by the burning bedclothes.
Mattress designs that showed a
moderate heat release rate peak when
tested with gas burners resulted in more
serious fires when tested with burning
bedclothes, especially in king size
mattresses. [2]
F. Existing Open Flame Standards
In the mattress ANPR the staff
reviewed 13 existing tests or standards
relevant to open flame hazards
associated with mattresses/bedding.
These included Technical Bulletin
(‘‘TB’’) 129, TB 121, and TB 117 from
California, the Michigan Roll-up Test,
and Boston Fire Department (‘‘BFD’’)
1X–11, as well as standards from ASTM
International (formerly the American
Society for Testing and Materials)
(ASTM E–1474 and ASTM E–1590),
Underwriters Laboratories (UL 1895 and
UL 2060), the National Fire Protection
Association (NFPA 264A and NFPA
267) and the United Kingdom (British
Standard (‘‘BS’’) 6807 and BS 5852). 66
FR 51886.
As directed by California Assembly
Bill 603, California’s Bureau of Home
Furnishings and Thermal Insulation
(‘‘CBHF’’) adopted Technical Bulletin
603 (‘‘TB 603’’), an open flame fire
standard for mattresses and mattress/
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box spring sets and futons. TB 603 is
expected to go into effect January 1,
2005 and applies to items manufactured
for sale in California. The California
standard incorporates the same test
methodology as the Commission’s
proposed standard. Both are based on
testing and research conducted at NIST.
Both TB 603 and the Commission’s
proposed standard require that
mattresses not exceed a 200 kW peak
heat release rate during the 30 minute
test. However, the Commission’s
proposed standard requires that
mattresses not exceed a total heat
release of 15 MJ in the first ten minutes
of the test, while TB 603 sets test criteria
of 25 MJ in the first 10 minutes of the
test.
The Commission believes that the
research NIST has conducted, discussed
above, establishes the most appropriate
basis for an open flame mattress
standard. Several comments on the
ANPR also expressed this view (see
section J of this document).
G. The Proposed Standard
1. General
The proposed standard sets forth
performance requirements that each
mattress/set must meet before being
introduced into commerce. The test
method is a full scale test based on the
NIST research discussed above. The
mattress specimen (a mattress or
mattress and foundation set, usually in
a twin size) is exposed to a pair of T
shaped propane burners and allowed to
burn freely for a period of 30 minutes.
The burners were designed to represent
burning bedclothes. Measurements are
taken of the heat release rate from the
specimen and energy generated from the
fire. The proposed standard establishes
two test criteria, both of which the
mattress/set must meet in order to
comply with the standard: (1) The peak
rate of heat release for the mattress/
foundation set must not exceed 200 kW
at any time during the 30 minute test;
and (2) The total heat release must not
exceed 15 MJ for the first 10 minutes of
the test.
2. Scope
The proposed standard applies to
mattresses and mattress and foundation
combinations sold as sets. Mattress is
defined, as it is in the existing mattress
standard at 16 CFR 1632, as ‘‘a resilient
material or combination of materials
enclosed by a ticking (used alone or in
combination with other products)
intended or promoted for sleeping
upon.’’ The proposed standard lists
several types of mattresses that are
included in this definition (e.g., futons,
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crib mattresses, youth mattresses). It
also refers to a glossary of terms where
these items are further defined.
Specifically excluded from the
definition of mattress are mattress pads,
pillows and other top of the mattress
items, upholstered furniture which does
not contain a mattress, and juvenile or
other product pads. Mattress pads and
other top of the bed items may be
addressed in the Commission’s
rulemaking on bedclothes.
Like the Commission’s existing
mattress standard, the proposed
standard allows an exemption for oneof-a-kind mattresses and foundations if
they are manufactured to fulfill a
physician’s written prescription or
manufactured in accordance with
comparable medical therapeutic
specifications.
3. Test Method
The proposed standard uses the full
scale test method developed by NIST in
the course of its research. Based on the
NIST work, the Commission believes
that a full scale test is necessary because
of the complexities of mattress
construction. Testing individual
components will not necessarily reveal
the likely fire performance of the
complete mattress.
Under the proposed standard, the
specimen (a mattress and corresponding
foundation if they are to be offered for
sale together as a set) is exposed to a
pair of T-shaped gas burners. The
specimen is to be no smaller than twin
size, unless the largest size mattress or
set produced of that type is smaller than
twin size, in which case the largest size
must be tested.
The burners impose a specified local
heat flux simultaneously to the top and
side of the mattress/set for a specified
period of time (70 seconds for the top
burner and 50 seconds for the side
burner). The burners were designed to
represent the local heat flux imposed on
a mattress by burning bedclothes. The
heat flux and burner duration were
derived from data obtained from
burning a wide range of bedding items.
As discussed above, NIST test results
using the burners have been shown to
correlate with results obtained with
bedclothes.
The proposed standard allows the test
to be conducted either in an open
calorimeter or test room configuration.
Tests have shown that either
configuration is acceptable. Although
room effects (i.e., the size and
characteristics of the room) can be a
factor in mattress flammability
performance, test data show that room
effects do not become an issue until a
fire reaches about 300 to 400 kW.
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Because the proposed standard limits
the peak rate of heat release to 200 kW,
room effects should not be an issue in
the test. Preliminary analysis of data
from the inter-laboratory study
(discussed in section I) does not suggest
any significant differences between tests
based on either test configuration. The
NIST test method allowed a third test
configuration, essentially a smaller test
room than described in the proposed
standard. However, in addition to safety
concerns, using the burners in the
smaller size room is awkward. Only one
laboratory in the country uses this
configuration. Therefore, the
Commission decided to propose only
the two configurations.
4. Test Criteria
The proposed standard establishes
two test criteria that the specimen must
meet to pass the test. The peak rate of
heat release must not exceed 200 kW at
any time during the 30 minute test, and
the total heat release must not exceed 15
MJ during the first 10 minutes of the
test. [2&8]
Setting the peak rate of heat release
limit at 200 kW (during the 30 minute
test) ensures a less flammable mattress,
reducing the contribution from the
mattress, while taking into account that
bedclothes and other room contents are
likely to contribute to the fire.
Numerous technologically feasible
mattress designs are available that can
meet the 200 kW criterion. Limiting the
peak rate of heat release represents a
significant improvement in performance
compared to the 16 CFR part 1632
cigarette ignition standard for mattresses
and will have the most impact on
available escape time. A peak rate of
heat release lower than 200 kW could
limit the mattress design approaches
that would meet the standard, thus
increasing costs. [2&8] We note that
California’s TB 603 also prescribes a 200
kW peak rate of heat release.
The proposed standard requires that
the total heat release in the first 10
minutes of the test must not exceed 15
MJ. This early limit ensures that the
mattress will have little involvement in
the fire initially and provides a
substantial increase in escape time by
slowing the rate of fire growth and
severity. The mattress’s initial
performance is important because if the
mattress becomes significantly involved
in the early stages of the fire, this will
greatly limit the time a person has to
escape. [2]
The proposed 15 MJ limit in the first
10 minutes takes into account that
bedclothes, and possibly other items,
will be burning during this initial
period and will contribute significantly
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to the fire. The Commission believes
that the types of ticking (i.e, the
outermost fabric or material that covers
the mattress) currently used on
mattresses can continue to be used with
the 15 MJ/10 minute criteria. [2] This
will allow manufacturers considerable
flexibility in their mattress designs
because they should be able to change
tickings without affecting the mattresses
performance under the test method,
except in the unusual case where the
ticking itself is part of the fire resistance
design.
California’s TB 603 prescribes a 25 MJ
limit in the first 10 minutes of the test.
However, NIST research, supported by
fire modeling, has shown that untenable
fire conditions can occur in a room from
a fire producing 25 MJ in the first 10
minutes of a test. This represents the
total contribution from all possibly
involved items. That is, a fire that
reaches a size of 25 MJ within 10
minutes could limit a person’s ability to
escape the room. According to the
mattress industry and available test
data, there are numerous
technologically feasible approaches to
mattress designs for meeting the
proposed 15 MJ /first 10 minute limit.
[2]
The 30 minute test duration is related
to, but not equivalent to, the estimated
time required to permit discovery of the
fire and allow escape under typical fire
scenarios. A mattress complying with
the proposed criteria under the 30
minute test is estimated to provide an
adequate time for discovery of and
escape from the fire under certain
conditions or assuming the bedclothes
do not contribute to the extent of posing
a hazardous condition early in the fire.
Compared to current scenarios, this is a
substantial increase in estimated escape
time. The effectiveness of the estimated
escape time is based on timely escape
from the potentially hazardous
conditions. [2&3]
Multiple test results indicate that a
large number of mattress designs (using
a range of fire retardant barrier
technologies) can perform well in tests
with gas burners for 30 minutes. Many
of the tested designs are able to meet the
proposed test criteria for 30 minutes,
but perform erratically after 30 minutes.
The number of failures, test variability,
and performance unreliability increases
after 30 minutes. A substantial range of
technologically feasible and viable
solutions and design choices exist that
meet the proposed test criteria for 30
minutes. [2] We note that California’s
TB 603 also includes a 30 minute test
duration.
The Commission considered
proposing a 60 minute test duration.
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However, as discussed above, after 30
minutes, test variability increases, costs
increase, and substantially fewer
technologically feasible design
approaches are available to meet the
test. Most importantly, it is unclear from
available data that much additional
benefit would accrue with a 60 minute
test.
5. Prototype Testing
The proposed standard requires, with
certain exceptions, that mattress
manufacturers must test specimens
representative of their mattress/set
prototype (design) before introducing a
mattress/set into commerce. Mattresses
then produced based on the prototype
mattress must be identical in all
material aspects of their components,
materials, and method of construction to
the prototype. The term ‘‘manufacturer’’
is defined as ‘‘an individual plant or
factory at which mattresses and/or
mattress and foundation sets are
manufactured or assembled.’’ The
definition includes importers. As in the
existing mattress standard (16 CFR part
1632), this definition refers to the
establishment where the mattress is
produced or assembled, not the
company. Thus, the plant or factory
producing or assembling the mattress/
set is required to conduct prototype
testing. This is also true for importers.
However, there are three exceptions to
this requirement.
A manufacturer is allowed to sell a
mattress/set based on a prototype that
has not been tested if the prototype
differs from a qualified prototype (one
that has been tested and meets the
criteria) only with respect to: (1) The
mattress/foundation size (e.g twin,
queen, king etc.); (2) the ticking, unless
the qualified ticking has characteristics
that are designed to improve the
mattress’s test performance; and/or (3)
any other component, material or
method of construction, provided that
the manufacturer can show, on an
objectively reasonable basis, that such
change will not cause the prototype to
exceed the specified test criteria. The
third numbered option allows a
manufacturer to construct and test a
‘‘worst case’’ prototype and rely on it to
cover a range of related designs without
having to perform additional testing. If
a manufacturer chooses to take this
approach, he/she must maintain records
documenting that the change(s) will not
cause the prototype to exceed the test
criteria (see § 1633.11(b)(4) of the
proposed rule).
When conducting prototype testing,
the manufacturer must test a minimum
of three specimens of the prototype in
accordance with the test method
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described, and all of the mattresses/sets
must meet both of the test criteria
discussed above. If any one prototype
specimen that the manufacturer tests
fails the specified criteria, the prototype
is not qualified (even if the
manufacturer chooses to test more than
three specimens).
The Commission believes that three
specimens is the appropriate minimum
number for testing. Numerous research
studies have typically used replicates of
three for tests using the developed gas
burners. This is also the number
industry has generally used as it has
researched and developed options for
meeting the requirements of California’s
TB 603. Preliminary analysis of the
inter-laboratory study also indicates that
three replicates are appropriate to
accurately characterize mattress
performance. [2] Moreover, because
small changes in mattresses’
construction or components can affect
their flammability, testing more than
one mattress will provide a better
indication of their performance. [1]
6. Pooling
The proposed standard allows for one
or more manufacturers to rely on a given
prototype. Under this approach, one
manufacturer would conduct (or cause
to be conducted) the full prototype
testing required (testing three prototype
specimens), obtaining passing results,
and the other manufacturer(s) may then
produce mattresses/sets represented by
that prototype so long as they conduct
one confirming test on a specimen they
produce. If the mattress/set fails the
confirming test, the manufacturer must
take corrective measures, and then
perform a new confirmation test that
must meet the test criteria. If a
confirmation test specimen fails to meet
the test criteria, the manufacturer of that
specimen must also notify the
manufacturer of the pooled prototype
about the test failure. Pooling may be
used by two or more plants within the
same firm or by two or more
independent firms. As discussed in the
initial regulatory flexibility analysis,
pooling should reduce testing costs for
smaller companies. Once they have
conducted a successful confirmation
test, pooling firms can produce
mattresses based on a pooled prototype
and may continue to do as long as any
changes to the mattresses based on the
pooled prototype are limited to the three
discussed above: (1) Size of the
mattress/foundation; (2) the ticking,
unless the qualified ticking has
characteristics that are designed to
improve the mattress’s test performance,
and/or (3) any component, material or
method of construction that the
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manufacturer can show (on an
objectively reasonable basis) will not
cause the prototype to exceed the
specified test criteria.
7. Quality Assurance Requirements
Research and testing indicates that
small variations in construction of a
mattress/set (e.g. missed stitching
around the side of the mattress) can
affect the fire performance of a mattress.
Therefore, the proposed standard
contains strict requirements for quality
assurance. Each manufacturer must
implement a quality assurance program
to ensure that the mattresses/sets it
produces are identical in all material
respects to the prototype on which they
are based. This means that at a
minimum, manufacturers must: (1) Have
controls in place on components and
materials to ensure that they are
identical to those used in the prototype;
(2) designate a production lot that is
represented by the prototype; and (3)
inspect mattresses/sets produced for
sale. The Commission is not requiring
manufacturers to conduct testing of
production mattresses. However, the
Commission recognizes the value of
such testing as part of a quality
assurance program. Therefore, the
Commission encourages manufacturers
to conduct random testing of mattresses/
sets that are produced for sale.
8. Recordkeeping
The proposed standard requires
manufacturers to maintain certain
records to document compliance with
the standard. This includes records
concerning prototype testing, pooling
and confirmation testing, and quality
assurance procedures and any
associated testing. The required records
must be maintained for as long as
mattresses/sets based on the prototype
are in production and must be retained
for three years thereafter.
The purpose of these recordkeeping
requirements is to enable manufacturers
to keep track of materials, construction
methods and testing. Thus, if a
manufacturer produced a mattress/set
that failed to meet the test criteria, he/
she should be able to use the records to
determine the prototype on which the
failing mattress was based, as well as
the components and method of
construction that were used. This
information would help the
manufacturer correct the problem that
caused the mattress to fail the test
criteria.
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9. Other Requirements: Labeling, One of
a Kind Exemption, and Policy on
Renovation of Mattresses
Under the proposed standard, each
mattress/set must bear a permanent
label stating the name and location of
the manufacturer, the month and year of
manufacture, the model identification,
prototype identification number, and a
certification that the mattress complies
with the standard. By placing the
certification on the mattress, the
manufacturer is attesting that the
specific mattress would comply with
the test criteria if tested.
The proposed standard allows an
exemption for a one-of-a-kind mattress/
set if it is manufactured in response to
a physician’s written prescription or
manufactured in accordance with
comparable medical therapeutic
specifications.
Subpart C of the proposed standard
restates the policy clarification on
renovation of mattresses that is in
Subpart C of the existing mattress
standard (16 CFR Part 1632). The policy
statement informs the public that
mattresses renovated for sale are
considered by the Commission to be
newly manufactured for purposes of the
requirements of the proposed standard.
H. Effectiveness Evaluation
To determine the potential
effectiveness of the proposed standard,
CPSC staff conducted an effectiveness
evaluation, focusing primarily on
reduction of deaths and injuries. The
staff’s analysis is explained in detail in
the memorandum ‘‘Residential Fires
Involving Mattresses and Bedding.’’ [3]
The evaluation was based primarily on
review of CPSC investigation reports
that provided details of the occupants’
situations and actions during the fire.
Staff reviewers identified criteria that
affected the occupants’ ability to escape
the fires they had experienced. The staff
used these criteria to estimate
percentage reductions in deaths and
injuries expected to occur under the
much less severe fire conditions
anticipated with improved designs of
mattresses that would comply with the
proposed standard. The staff then
applied these estimated reductions to
national estimates of mattress/bedding
fire deaths and injuries to estimate
numbers of deaths and injuries that
could be prevented with the proposed
standard. [3]
As stated in section D of this
document, the most recent national fire
loss estimates indicated that mattresses
and bedding were the first items to
ignite in 19,400 residential fires
attended by the fire service annually
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during 1995—1999. These fires resulted
in 440 deaths, 2,230 injuries and $273.9
million in property loss each year. Of
these, the staff considers an estimated
18,500 fires, 440 deaths, 2,160 injuries,
and $259.5 million property loss
annually to be addressable by the
proposed standard (i.e., of the type that
the proposed standard could affect
based on the characteristics of the fire).
[3]
Overall, CPSC staff estimates that the
proposed standard may be expected to
prevent 80 to 86 percent of the deaths
and 86 to 92 percent of the injuries
presently occurring in addressable
mattress/bedding fires attended by the
fire service. Applying these percentage
reductions to 1998–2002 estimates of
addressable mattress/bedding fire
losses, staff estimates potential
reductions of 310 to 330 deaths and
1,660 to 1,780 injuries annually in fires
attended by the fire service when all
existing mattresses have been replaced
with mattresses meeting the new
standard. There may also be reductions
in property damage resulting from the
proposed standard, but data are not
sufficient for the staff to quantify this
impact. [3]
I. Inter-Laboratory Study
An inter-laboratory study was
conducted with the support of the
SPSC, NIST, and participating
laboratories to explore the sensitivity,
repeatability, and reproducibility of the
NIST test method. All of the
participating labs conducted multiple
tests of eight different mattress designs.
The mattress designs varied critical
elements (e.g., the barrier—sheet or
high-loft, the type of mattress—single or
double-sided) and the style of mattress
(e.g., tight or pillow top). [2]
Preliminary analysis of the data does
not suggest either unreasonable
sensitivities (i.e., significantly different
test results when minor variations in
test procedure are made) or practical
limitations in the test protocol. The
preliminary analysis suggests that some
mattress designs perform more
consistently than others. The type of
barrier appears to have a significant
impact on the performance and
repeatability of performance of all
mattress designs tested. However, the
uniformity of other components and the
manufacturing process can also affect
the variability in fire performance. [2]
The inter-lab tests also appear to
confirm earlier observations that
mattresses constructed with currently
available barrier technologies are able to
limit the fire severity for a substantial
but not indefinite time. Most of the
tested mattress designs could meet the
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proposed requirements if the test ended
at 30 minutes, but appeared to perform
erratically after 30 minutes. [2]
The preliminary analysis, supported
by earlier data, suggests that significant
variability exists among currently
available mattress designs. Although
products appear to be moving toward
consistency, manufacturers clearly need
to control components, materials, and
methods of construction. Thus, quality
assurance measures, as required in the
proposed rule, are important. [2]
The inter-lab study was only recently
completed, and the discussion above is
based on the staff’s preliminary analysis
of the results. A final report on the interlab study is expected by the end of 2004
and will be available to the public.
J. Response to Comments On the ANPR
On October 11, 2001, the Commission
published an ANPR in the Federal
Register. 66 FR 51886. During the
comment period, the Commission
received sixteen written comments from
businesses, associations and interested
parties representing various segments of
the mattress and bedding industries.
After the close of the comment period,
the Commission received a number of
additional comments, including one
from the California Bureau of Home
Furnishings and Thermal Insulation
urging the Commission to adopt
California’s TB 603 as a federal
standard. Significant issues raised by all
of these comments are discussed below.
[14&15]
Mattress Comments
1. Comment. Commenters agree that
the hazards associated with mattress
fires appear to be clearly identified. All
of the commenters support the need for
an open flame standard for mattresses
and initiation of federal rulemaking.
Response. CPSC agrees that mattress
and bedding fires continue to be one of
the major contributors to residential fire
deaths and civilian injuries among
products within CPSC’s jurisdiction.
The most recent national fire loss
estimates indicate that mattresses and
bedding were the first items to ignite in
19,400 residential fires attended by the
fire service annually during 1995—
1999. These fires resulted in an
estimated 440 deaths, 2,230 injuries,
and $273.9 million property loss
annually. In these fires, the bedclothes
are most frequently ignited by a small
open flame source. The burning bedding
then creates a large open-flame source
igniting the mattress and creating
dangerous flashover conditions, the
point when the entire room and its
contents are ignited simultaneously by
radiant heat.
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The proposed standard is designed to
address the identified hazard of
flashover resulting from open flame
ignition of mattresses, usually from
burning bedclothes. Under the proposed
standard, mattresses and mattress/sets
are exposed to gas burners, simulating
burning bedclothes. Mattresses are
required to meet two performance
criteria that minimize the possibility of
or delay flashover for a period of time.
Mattresses must not exceed 200 kW
peak heat release rate during the 30
minute test, and the total heat released
must be less than 15 MJ for the first 10
minutes of the test.
2. Comment. Most commenters
endorsed the direction of the mattress
flammability test development research
underway at NIST and encouraged the
CPSC to issue a technologically
practicable, reasonable standard. More
recent commenters suggest California
TB 603 be adopted as the federal
standard.
Response. CPSC agrees with the
technical approach suggested by the
NIST research. A majority of the
commenters agreed that preventing
flashover from mattress fires would
appropriately address the risk and that
a full scale test with an ignition source
comparable to burning bedclothes could
achieve that objective. They strongly
supported the NIST approach and
discouraged the adoption of any existing
standards.
Before California’s adoption of TB
603, one commenter suggested using a
modification of the small-scale British
test, BS 5852, for smoldering and
flaming ignition of upholstered
furniture seating composites. However,
a full-scale rather than small-scale test
is generally considered the most reliable
method for measuring performance of a
product that contains many materials in
a complex construction, such as a
mattress. NIST research confirmed that
a full-scale test of the mattress was
needed to measure its performance
when exposed to burning bedclothes or
the representative set of gas burners.
NIST’s comprehensive, scientifically
based research program was designed to
address the open-flame ignition of
mattresses and bedclothes under
controlled conditions closely
resembling those of real-life fire
scenarios. The program focused on
understanding the dynamics of fires
involving mattress and bedclothing
assemblies and on developing an
appropriate and technologically
practicable methodology to effectively
measure the hazard.
NIST subsequently prepared a test
method which the state of California
incorporated into their TB 603,
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‘‘Requirements and Test Procedure for
Resistance of a Mattress/Box Spring Set
to a Large Open-Flame’’ in 2004. The
proposed standard is also based on the
test method developed by NIST.
Research on mattress and bedclothes
fires conducted by NIST for CPSC and
the industry provides the basis for the
test criteria specified in the proposed
standard. Manufacturers and suppliers
have demonstrated that mattress designs
complying with these performance
criteria and suitable for the residential
market can be produced.
3. Comment. One commenter
requested the exclusion of certain
product categories, such as mattresses
used for therapeutic reasons and in
healthcare environments, from an open
flame standard.
Response. The proposed standard
includes all mattresses, including those
used in or as part of upholstered
furniture items. ‘‘One-of-a-kind’’
mattresses and foundations are defined
as physician prescribed mattresses to be
used in connection with the treatment
or management of a named individual’s
physical illness or injury. These
products may be exempted from testing
under the proposed standard in
accordance with the rules established by
the Commission. The proposed standard
requires them to be permanently labeled
with a warning statement indicating that
the mattress and foundation have not
been tested under the standard and may
be subject to a large fire if exposed to
an open flame.
4. Comment. In October 2003 the
California Bureau of Home Furnishings
(CBHF) urged the Commission to adopt
their new standard, TB 603.
Subsequently, a number of commenters
expressed written support for adopting
the TB 603 test methodology and
performance criteria.
CBHF claimed that harmonization of
California and federal standards would
avoid a number of potential problems.
They noted potential problems such as
possible federal preemption and
negative impacts on interstate
commerce. Since TB 603 is a newly
developed methodology, CBHF
suggested that an inter-laboratory study
be conducted before a potential
adoption of TB 603 by CPSC. They
noted that data obtained from an interlaboratory study would verify the
credibility of the test method.
Response. An inter-laboratory study
was conducted with the support of
SPSC, NIST, CBHF, and other
participating laboratories to collect
additional data and confirm the test
protocol developed by NIST. A number
of laboratories participated in the study
to evaluate sensitivity, repeatability, and
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reproducibility of the test protocol.
While the final report is not yet
available, preliminary analysis of the
data does not suggest either
unreasonable sensitivities or practical
limitations in the test protocol.
The Commission’s proposed standard
is similar to California’s TB 603. The
proposed standard and TB 603 use the
same test method and limit the peak rate
of heat release of a mattress or mattress/
foundation to 200 kW. TB 603 also
limits the size of the fire produced in
the first 10 minutes of the test to 25 MJ.
According to NIST research, untenable
fire conditions could occur in a room
from a fire of this size. Unlike TB 603,
the staff’s draft proposed standard
requires that the mattress contribute no
more than 15 MJ to the early fire
scenario. This ensures that the mattress
will have little involvement in the fire
for the specified period of time. This
lower limit partially compensates for
the contribution of an uncertain
combination of burning bedclothes on
the bed, helping to preserve tenable
conditions for egress.
5. Comment. Two commenters
recognize the sophistication and
complexity of the test method used in
California TB 603 and potentially in a
federal standard. They suggest that
CPSC explore laboratory accreditation
programs to insure test labs are properly
qualified to conduct this complex test.
Response. The interlaboratory study
may identify laboratory practices,
equipment, and other related factors
that must be controlled to ensure
consistent and accurate test results. The
report and findings of the study will be
available to the public; and appropriate
guidance can be provided to interested
laboratories. While accrediting test
laboratories is not a CPSC function, the
Commission supports industry and
commercial laboratory development of
such a program.
6. Comment. A commenter expressed
concerns about environmental impact
and consumer sensitivity to flame
retardants that may be used in
mattresses, whether topically applied or
integrated into fibers. The commenter
recommends requiring a label that
discloses the use of flame retardants in
the mattress and provides a source of
more specific information.
Response. Mattress fire performance
can be improved by incorporating fire
retardant chemicals into component
materials or by using materials that are
inherently fire resistant. Flame retardant
chemicals are already widely used in
other applications. More than one
billion pounds of different flame
retardant chemicals are currently used
annually in the United States, including
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applications in many consumer
products. There are also flame resistant
(FR) materials that may be used for
mattress barriers that have other
consumer product applications. For
example, melamine resins, which can be
used in FR barriers, are also used in
many laminated counter tops.
Based on available data, the
Commission believes that there are
available options for meeting the
standard without posing an
unacceptable health risk to consumers
or significantly affecting the
environment. Moreover, as described in
section N of this preamble, even if a
method used by some manufacturers to
meet the standard were suspected of
posing an unacceptable risk, there
would be regulatory and other
mechanisms that can be used to control
that particular method. The staff is
planning to conduct migration and
exposure studies on various FR
chemicals that could be used to meet
the standard.
The commenter suggested labeling of
chemically treated components as a
possible requirement of the standard, to
inform consumers of the materials used.
The Commission questions whether
such information would be of practical
value to consumers. Simply stating that
a mattress component has been
chemically treated does not indicate to
the consumer whether the mattress
poses any health risk or not. The
proposed standard requires
manufacturers to maintain records
specifying details of all materials,
including flame retardant treatments
applied and inherently flame resistant
materials, used in each mattress design
(prototype). This will allow
identification of relevant mattresses and
mattress/sets if an unacceptable risk is
identified.
7. Comment. Another commenter
recommended test provisions in the
standard that address the long term
durability of the flame retardant
chemicals used in mattresses to ensure
they continue to meet the fire
performance requirements.
Response. It is expected that most
manufacturers will use some kind of
flame resistant barrier material to
protect the mattress components with
the greatest combustible fuel load from
exposure to an open flame. Flame
resistant barriers for mattresses may take
several forms, including ticking fabrics,
woven and non-woven interlinings, and
battings. It is likely that these barriers
will be made with an inherently flame
resistant fiber (e.g., para-aramid or
fiberglass) or by treatment with flame
retardant chemicals, many of which are
incorporated within the fiber, foam, or
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other material. At this point in the
development of technologies that may
be used to meet TB 603 or the proposed
standard, the staff has seen no evidence
that suggests that changes in these
materials over time will occur or affect
fire performance.
8. Comment. One commenter
expressed concerns about the
potentially severe economic impact of a
federal regulation, similar to TB 603, on
small businesses.
Response. The Commission
acknowledges that the cost of testing,
record keeping, and quality control/
quality assurance programs could be
disproportionately higher for small
businesses. While these costs are
estimated to be a little over one dollar
per mattress per year for average-sized
establishments, they could be
substantially higher for some small
mattress producers. The proposed
standard, however, allows
manufacturers to pool their prototype
qualification and testing, and thus these
costs can be mitigated. Moreover, if
manufacturers produce mattress/set
constructions for longer than a year or
use a worst-case prototype to represent
other mattress constructions, these costs
will be lower. It is also expected that
some barrier suppliers or independent
laboratories would be willing to do the
testing and quality control/assurance
programs for small producers in
exchange for a small charge. Therefore,
the proposed standard is expected to
minimize the impact on small
businesses, while maintaining the
benefits resulting from the standard.
The Commission is requesting
comments from small businesses on the
expected economic impact of the
requirements of the proposed standard
and the proposed effective date of 12
months after publication of the final
rule in the Federal Register.
9. Comment. One commenter reported
that some juvenile or crib mattresses,
while meeting the 200 kW peak rate of
heat release requirement, produce large
amounts of flaming droplets that have
the potential for spreading flames
beyond the mattress. TB 603 does not
address these flaming droplets.
Response. The objective of the
proposed standard is to reduce the size
of mattress/bedding fires and, thereby
reduce the likelihood of or delay the
development of flashover conditions in
the room. Based on research conducted
by NIST, performance criteria were
developed to limit the size of the
mattress fire and reduce the likelihood
of it involving other objects in the room.
The Commission believes that, while
the proposed standard may be less
effective in isolated circumstances, the
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objective of the standard can be met
with the performance criteria specified:
maximum 200 kW peak heat release rate
during the 30-minute test and maximum
15 MJ total heat release in the first 10
minutes of the test. Laboratory tests of
currently marketed crib mattresses of
which the Commission is aware show
unacceptable performance in one or
both of these fire performance measures.
Like full-size mattresses, these crib
mattresses would also need to be
improved to meet the requirements of
the proposed standard.
10. Comment. One commenter
suggested that a 60-minute test duration
is needed in the standard to allow for
fire and rescue workers to respond and
help occupants escape.
The commenter notes that the longer
test time will allow emergency
responders to assist vulnerable citizens
to escape fires involving mattresses and
bedding. They report that response
times can vary widely among local
circumstances, from approximately 16
minutes to an hour or more.
Response. To estimate the proposed
standard’s potential effectiveness, the
staff reviewed in-depth investigations
that provided detailed information
about fires that ignited mattresses and
bedding, details of the occupants’
situation, and occupants’ actions during
the fire. Most investigations also
included documentation from the fire
department that attended the fire. The
in-depth investigations involved fires
occurring during 1999–2004, and
included a total of 195 deaths and 205
injuries. In some of these cases, even
with traditional mattresses and bedding,
other members of the household present
at the time of the fire and emergency
responders arriving within as little as 5
minutes were able to rescue victims.
With improved mattresses, those
complying with the 30-minute test
specified in the proposed standard, the
fire growth is slowed considerably and
flashover conditions are delayed,
making successful rescue efforts of
family members and emergency
responders more likely. The
Commission estimates that 310 to 330
deaths and 1,660 to 1,780 injuries
resulting from mattress and bedding
fires could be prevented annually by the
proposed standard. A maximum
additional 80 deaths and 280 injuries,
considered addressable by the draft
standard, might be further reduced with
a 60-minute test. However, actual
reductions would likely be much lower.
This is because those considered likely
to die or be injured in conditions
associated with a proposed 30 minute
test are those incapable of acting on
their own and with no potential rescuer
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in the occupancy. Even with more time,
in such circumstances, the fire
continues to progress, and the chances
of rescue are unpredictable.
Based on the preliminary regulatory
analysis, the expected benefits of the
proposed standard, incorporating a 30minute test, are greater than the costs.
The regulatory analysis also considered
alternatives to the proposed standard,
including a 60-minute test; neither this
nor the other alternatives was shown to
increase expected net benefits.
11. Comment. A few commenters
expressed the need to maintain
protection from the threat from cigarette
ignitions while considering an open
flame standard.
Response. The standard that
addresses cigarette ignition resistance,
the Standard for the Flammability of
Mattresses and Mattress Pads, codified
as 16 CFR part 1632, remains in effect
unless it is modified or revoked by the
Commission in a separate rulemaking
proceeding. If such a rulemaking
occurred, the Commission would
thoroughly evaluate the need for
maintaining both an open flame
standard and the standard for cigarette
ignition resistance.
Bedclothes Comments
Comment. Most of the commenters
refer to the impact of burning
bedclothes on mattress/bedding fires
and express opinions on the potential
scope of an open flame mattress
standard. Some commenters urge the
Commission to limit the scope of a
standard to mattresses while opposing
commenters recommend that either the
scope be expanded to incorporate
bedclothes or bedclothes should have
ignition standards of their own.
Commenters in support of regulating
bedclothes believe that studying the
impact of burning bedclothes is
appropriate and would assist in the
development of better performing, safer
products. They note that bedclothes
contribute to the intensity and spread of
the original ignition source often
involved in mattress fires. Therefore,
burning bedclothes become a significant
ignition source to the mattress and
impact the burning characteristics of the
mattress and foundation. They further
note that bedclothes alone have been
shown to generate a fire large enough to
pose a hazard and can alone be the
cause of ignition to nearby items.
According to these commenters,
improving the flammability of certain
bedding items, such as filled items, is
economically feasible. One commenter
claims that mattress fires cannot be
adequately addressed without also
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considering the flammability of
bedclothes.
In support of limiting the scope to
mattresses and not regulating
bedclothes, some commenters identify
bedding items as an uncontrolled
variable. They claim that there is no
way to predict the type of bedclothes
that may be involved in an incident at
any given time; the number and type of
items used by consumers is indefinable
and consumers select items based on
season, fashion, and climate. In
addition, according to these
commenters, there is no objective
method to determine if consumers
would use regulated bedclothes; there is
little data to suggest that regulating
some selected items will have an impact
on the hazard; and flammability
performance should not be based on
what consumers may or may not use as
bedclothes. These commenters also state
that most U.S. textile manufacturers
already voluntarily test for small open
flame ignition of bedclothes using
ASTM voluntary test methods. They
assert that the additional burden and
expense of any regulation on bedclothes
would be substantial and could not be
justified.
Response. The Commission notes that
bedclothes substantially contribute to
the complexity and magnitude of the
mattress fire hazard. In laboratory tests
peak heat release rates as high as 800
kW were observed from some larger
bedclothes items. This presents a clear
risk of flashover; and this heat release
rate is much higher than that allowed
for a mattress/set in the proposed
standard. The extent to which
bedclothes can be modified in a manner
that is technologically practicable and
economically feasible is unclear at this
time. However, reducing the
contribution of certain high fuel load
bedding items to a mattress/bedding fire
is desirable. The Commission is issuing
an ANPR for a bedclothes flammability
standard. The Commission believes that
such a standard could increase the
likelihood that mattress/bedding fire
losses are effectively reduced.
K. Preliminary Regulatory Analysis
The Commission has preliminarily
determined to issue a rule establishing
a flammability standard addressing the
open flame ignition of mattresses.
Section 4(i) of the FFA requires that the
Commission prepare a preliminary
regulatory analysis for this action and
that it be published with the proposed
rule. 15 U.S.C. 1193(i). The following
discussion, extracted from the staff’s
memorandum titled ‘‘Preliminary
Regulatory Analysis of a Draft Proposed
Standard to Address Open-Flame
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Ignitions of Mattresses,’’ addresses this
requirement. [8]
1. Introduction
There were an estimated 18,900 fires
where the first item ignited was
mattress/bedding in 1998 (the last year
for which detailed data comparable to
previous years are available). These fires
caused an estimated 2,260 civilian
injuries, 410 deaths, and $255.4 million
in property losses. As discussed
elsewhere in this document, NIST has
conducted extensive research and
developed a test methodology to test
open flame ignition of mattresses.
California Technical Bulletin (TB)
603, which is based on the use of NIST
test burners designed to mimic the local
thermal insult (heat flux levels and
duration) imposed by burning
bedclothes, is scheduled to become
effective in California January 1, 2005.
TB 603 requires all mattress/foundation
sets, mattresses intended to be used
without a foundation, and futons to
meet the following pass/fail criteria: (1)
The peak heat release rate (‘‘PHRR’’)
does not exceed 200 kW during the 30
minute test, and (2) the total heat release
does not exceed 25 mega joules (MJ) in
the first 10 minutes of the test.
Large mattress manufacturers may
eventually produce TB 603-compliant
mattresses for sale nationwide, because
of legal liability and production
logistics. In the short-run, however,
some manufacturers may limit their sale
of TB 603-complying mattresses to
California. Sealy’s president and CEO
said that ‘‘[they] plan to be ready by the
end of this year [2004] if a national
retailer wants the same product’’ with
fire resistant technology, but will not
convert all production by January 2005
(Furniture Today, March, 10, 2004).
Smaller producers are more likely to
wait until they have a better idea of
enforcement efforts in California, or
until a federal standard is adopted. The
mattress industry, represented by ISPA,
supports the development of a
mandatory federal standard (Furniture
Today, May, 10, 2004). A Federal
standard would eliminate the
uncertainty that may result from having
different flammability standards for
different states.
2. The Proposed Standard: Scope and
Testing Provisions
The proposed standard will apply to
all mattresses, where the term mattress
means a ticking (i.e., an outer layer of
fabric) filled with a resilient material
used alone or in combination with other
products intended or promoted for
sleeping upon. This definition is
discussed further in section G.2. above.
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A typical innerspring mattress
construction might include ticking;
binding tape fabric; quilt cushioning
with one or more separate layers; quilt
backing fabric; thread; cushioning with
one or more separate layers; flanging;
spring insulator pad; spring unit; and
side (border) panels. Options for
meeting the standard include the use of
one or a combination of the following:
fire resistant ticking; chemically treated
or otherwise fire resistant filling
products; or a fire blocking barrier
(either a sheet style barrier, sometimes
called a fabric barrier, or a high-loft
barrier, sometimes called a fiber barrier).
The fire blocking barrier is placed either
directly between the exterior cover
fabric of the product and the first layer
of cushioning materials, or beneath one
or more ‘‘sacrificial’’ layers that can
burn without reaching the proposed
heat release constraints.
There are already over twenty
different vendors of fire resistant
materials associated with the
production of mattresses, including
barriers, ticking, foam, tape, and thread.
These materials include chemically
treated cotton, rayon, and/or polyester,
melamine, modacrylic, fiberglass,
aramid (Kevlar’’), or some combination
of them. The cost of using sheet barriers
is higher than using high-loft barriers,
since sheet barriers are thin and
therefore could not be substituted for an
existing foam or cushioning layer. There
is also concern that some sheet barriers,
unlike high-loft barriers, may reduce the
comfort of the sleeping surface.
To qualify a prototype, three
mattresses/sets must be tested and must
pass the test requirements. To obtain a
passing result, each mattress/set must
pass a 30 minute test, where the PHRR
does not exceed 200 kW and the total
heat release does not exceed 15 MJ in
the first 10 minutes of the test. If any of
the sets fail, the problem must be
corrected, the prototype must be
retested and pass the test (in triplicate).
Manufacturers may sell any mattress/set
based on a qualified prototype.
Manufacturers may also sell a mattress/
set based on a prototype that has not
been tested if that prototype differs from
a qualified prototype only with respect
to (1) mattress/foundation size; (2)
ticking, unless the ticking of the
qualified prototype has characteristics
designed to improve performance on the
burn test; and/or (3) any component,
material, or method of construction that
the manufacturer can demonstrate, on
an objectively reasonable basis, will not
cause the prototype to exceed the test
criteria specified above.
If one or more establishments (plants
within the same firm) or independent
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firms choose to ‘‘pool’’ prototypes, then
each pooling plant or firm is required to
test one mattress/set for confirmation
testing. If that set fails, then the plant or
firm will need to test another mattress/
set after correcting its production to
make sure that it is identical to the
original prototype.
A pooling firm may sell other
mattresses that have not been tested by
the pooling firm if they differ from the
pooled prototype only with respect to
(1) mattress/set size; (2) ticking, unless
the ticking of the qualified prototype
has characteristics designed to improve
performance on the burn test; and/or (3)
any component, material, or method of
construction that the manufacturer can
demonstrate, on an objectively
reasonable basis, will not cause the
prototype to exceed the test criteria
specified above.
3. Products and Industries Potentially
Affected
According to ISPA, the mattress
producers’ trade organization, the top
four producers of mattresses account for
almost sixty percent of total U.S.
production. In total, there are 639
establishments (as of 2001) that produce
mattresses in the U.S., using the U.S.
Department of Commerce NAICS (North
American Industry Classification
System) Code 33791 for mattresses. The
top four producers account for about
half of the number of all these
establishments. The number of
establishments has been declining over
time due to mergers and buy-outs. Total
employment in the industry, using the
NAICS Code 33791, was 25,500 workers
in 2001.
The mattress manufacturing industry
has three key supplying industries:
spring and wire product manufacturing,
broad-woven fabric mills, and foam
products manufacturing. Depending on
the type of fire resistant barrier chosen
by different manufacturers, the demand
for foam padding for mattresses might
decline if it were replaced by the highloft barrier in the construction of the
mattress and foundation. This would be
offset by an increase in the demand for
the high-loft barrier. If sheet barriers
were chosen by some mattress
producers, then sales of, and
employment by, the sheet barrier
suppliers would increase. Since the
sheet barriers would not replace other
inputs, there would most likely be no
offsetting effect on other industries.
Fiberglass, melamine, and aramid
producers may also be affected to the
extent that they are used to produce fire
resistant materials used in mattress
production.
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Manufacturers of bedclothes may also
be affected by the proposed standard.
Sales of bedclothes may increase or
decrease based on whether consumers
view bedclothes as complements or
substitutes for a new mattress/set
(complements are goods generally
consumed together, substitutes
generally substitute for each other). For
example, if people tend to buy all parts
of a new bed (mattress, foundation, and
bedclothes consisting of a comforter,
pillows, and sheets) at the same time,
then an increase in the quantity of
mattresses sold would cause an increase
in sales of bedclothes. If, alternatively,
people tend to have a fixed budget from
which to buy all mattresses and bedding
items, then an increase in the quantity
of mattresses sold would lead to a
decrease in sales of bedclothes. Also, if
the decision to buy a new mattress (or
mattress/set) involves buying a mattress
that is much thicker than the one
currently in use, then consumers will
most likely buy new sheets (and
possibly matching pillowcases and
other bedclothes items) to fit the new
thicker mattress.
If the cost increase is relatively small
or there is no resulting increase in the
price of a mattress/set, then the demand
for bedclothes will only be affected if
consumers place a higher value on the
safer mattress and replace their current
mattress sooner than they would have
with no standard in place. An increased
demand for the safer (and thicker, if the
current mattress is relatively old)
mattress will likely result in an
increased demand for sheets that fit the
newer mattresses. This effect, however,
is not directly resulting from the
adoption of the proposed standard since
the thickness of the mattress need not be
increased by the presence of either type
of barrier. It is the result of the increased
utility some consumers may derive from
the safer mattress and the consequent
increase in demand for bedclothes. The
increased demand for safer mattresses
would most probably lead to an increase
in sales and employment in the spring
and wire products, broad-woven fabric,
and foam products industries, as well as
in the mattress and bedclothes
industries.
Other producers that could
potentially be affected, if the price
change associated with producing
compliant mattresses is significant, are
those of other substitute products, like
airbeds, waterbeds, * * * etc. that
contain no upholstered material and
would, therefore, not be covered by the
proposed standard. Their sales may
increase as a proportion of total bedding
products.
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4. Characteristics of Mattresses Used in
U.S. Households
The total number of U.S. conventional
mattress shipments was 21.5 million in
2002 and is estimated to be 22.1 in 2003
and 22.8 in 2004. Mattress shipments
have grown at an average rate of three
percent over the period 1981 to 2004.
Unconventional mattresses (including
futons; crib mattresses; juvenile
mattresses; sleep sofa inserts; and
hybrid water mattresses) are estimated
to be about ten percent of the total
market. This yields an estimated total
number of mattresses produced
domestically of 25.3 million in 2004.
The value of mattress and foundation
shipments in 2002, according to ISPA,
was $3.26 and $1.51 billion
respectively.
The CPSC Product Population Model
(PPM) estimate of the number of
mattresses in use in different years is
based on available annual sales data and
an estimate of the average product life
of a mattress. Industry representatives
assert that the average consumer
replaces a mattress/set after ten years. A
1996 CPSC market study estimated the
average expected life of a mattress to be
14 years. The PPM estimates the number
of (conventional and non-conventional)
mattresses in use in 2004 to be 233
million mattresses, using a 10-year
average product life, and 302.6 million
mattresses, using a 14-year average
product life. These two numbers are
later used to estimate the pre-standard
baseline risk and the expected benefits
of the proposed standard.
This analysis focuses principally on
queen-size mattresses because they are
the most commonly used. In 2002
queen-size mattresses were used by 34
percent of U.S. consumers. Following
the queen-size are the sizes: Twin and
Twin XL (31.2 percent), Full and Full
XL (21 percent), King and California
King (11 percent), and all other (2.6
percent). ISPA data reflect that the
average size of a mattress is increasing.
The average manufacturing price in
2002 was $152 for a mattress of average
size and $86 for a foundation of average
size. Hence the average manufacturing
price of a mattress/set was about $238
in 2002.
There are no readily available data on
average retail prices for mattress/
foundation sets by size. ISPA, however,
reports that mattress/foundation sets
selling for under $500 represent 40.7
percent of the market. Mattress/
foundation sets selling for between $500
and $1000 represent 39.2 percent of the
market.
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5. Trends in Mattress/Bedding
Residential Fires, Deaths, Injuries, and
Property Losses
Open-Flame Ignition. The staff
estimates average annual mattress/
bedding fires from open-flame ignitions
(including candles, matches and
lighters) to have been 8,367 and 6,367
over the 1993–95 and 1996–98 periods
respectively. This represents a reduction
of 23.9 percent. The resulting average
mattress/bedding deaths, injuries, and
property losses from open-flame
ignitions have decreased by 28.2
percent, 22.1 percent, and 5.6 percent
respectively, over the 1993 to 1998
period. When adjusted for inflation, the
decrease in the value of property losses
becomes 37.7 percent.
Smoking Material Ignition. The staff
estimates average annual mattress/
bedding fires from smoking material
ignition (including cigarettes, cigars,
and pipes) to have been 7,733 and 6,067
over the 1993–95 and 1996–98 periods
respectively. This represents a reduction
of 21.6 percent over the 1993 to 1998
period. Average annual deaths, injuries,
and property losses due to mattress/
bedding smoking material ignitions
have decreased by 4.7 percent, 19.7
percent, and 9.7 percent, respectively,
over the same period. When adjusted for
inflation, the decrease in the value of
property losses becomes 40.4 percent.
Other Ignition Sources. The staff
estimates average annual mattress/
bedding fires from other ignition
sources (including sparks, embers, or
flames escaping from fueled equipment,
arcs or sparks from electric equipment,
small torches, hot embers, and
fireworks, heat escaping from fueled
equipment, molten material, short
circuit arc, and heat overloaded
equipment) to have been 8,633 and
7,767 over the 1993–95 and 1996–98
periods respectively. This represents a
reduction of 10 percent over the 1993 to
1998 period. Average annual injuries
and inflation-adjusted property losses
have decreased by 13.8 percent and 38.7
percent respectively. Average annual
deaths increased by 51.7 percent (from
97 to 147). This increase offsets the
decrease in deaths resulting from openflame and smoking material ignition
fires. The annual average number of
deaths from all ignition sources
remained unchanged over the period,
equal to 510.
6. Expected Benefits of the Proposed
Standard
The expected benefits of the proposed
standard are estimated as reductions in
the baseline risk of death and injury
from all mattress fires, based on a CPSC
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staff study of fire investigations from
1999–2004. Risk reductions are then
calculated on a per-mattress-in-use basis
based on estimates of the number of
mattresses in use. The monetary value
of expected benefits per mattress is
derived using current (i.e., 2004)
estimates for the value of a statistical
life and the average cost of a mattress
fire injury. To derive the monetary value
of expected benefits over the life of a
mattress, the expected annual benefits
are discounted (using a three percent
discount rate), and then summed over
the expected life of the mattress. The
analysis considers mattress lives of 10
and 14 years.
The potential benefits of the proposed
standard consist of the reduction in
deaths, injuries, and property damage
that would result. Since the objective of
the proposed standard is to reduce the
likelihood of flashover or increase the
time before flashover occurs, and not to
reduce fires, changes in property losses
associated with the proposed standard
are hard to quantify. Property losses are
expected to decline but the extent of the
decline cannot be quantified.
Consequently, for purposes of this
analysis, no reduction in property losses
is assumed. That is, all expected
benefits from the proposed standard are
in the form of prevented deaths and
injuries. This underestimates net
benefits, since there will likely be some
benefits from reduced property losses.
The proposed standard is expected to
reduce the likelihood of flashover
resulting from fires started by smoking
materials or other ignition sources, as
well as those started by open-flame
ignition. Fires, injuries, and property
losses resulting from smoking material
ignition and other ignitions, and deaths
from smoking material ignition are
lower for the 1996–98 period than the
1993–95 period. (Deaths from other
ignition sources are more than 50
percent higher). Any additional
reduction in these figures due to the
proposed open-flame ignition standard
will translate into societal benefits, as
will be discussed in the benefit-cost
analysis (Section 8).
Estimates of the effectiveness of the
proposed standard are based on a CPSC
staff evaluation of in-depth investigation
reports of fires (including details of the
occupants’ situations and actions during
the fire) occurring in 1999–2004 in
which a mattress or bedding was the
first item to ignite, the fire was of the
type considered addressable by the
proposed standard, and a civilian death
or injury resulted. Most of the
investigations also included
documentation from the fire department
that attended the fire. Some incident
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reports were initiated from death
certificates with follow-up
documentation from the fire
department. This resulted in a total of
195 deaths and 205 injuries in the
investigations to be evaluated. The
distribution of mattress ignition sources
was not representative of all fires
involving mattresses and thus the data
were weighted to match the NFIRSbased national fire data distributions.
Evaluations of the fire incidents by
CPSC staff reviewers used the results of
NIST testing (Ohlemiller, 2004;
Ohlemiller and Gann, 2003; Ohlemiller
and Gann, 2002) conducted to assess the
hazard produced from burning
mattresses and bedclothes. Specifically,
the evaluations were based on the
expectation that occupants in bed when
the fire ignited but able to escape the
burning bedclothes in the first three to
five minutes faced a minimal hazard.
Occupants in direct contact with
burning bedclothes for a longer period
(5 to 10 minutes) would be subject to
potentially hazardous levels of heat
release. If the burning bedclothes did
not ignite other non-bedding items or
produce flashover at this time, heat
release would subside temporarily and
then begin to increase as the
involvement of the mattress increased.
These conditions would allow
occupants 10 to 15 minutes to escape
the room of origin before the situation
in the room would become untenable.
Since the proposed standard is expected
to slow the rate of fire spread and hence
increase escape time, assuming that
bedclothes do not contribute enough
heat to pose a hazardous condition, it
was assumed that no deaths would
occur among people who were outside
the room of origin at the time of
ignition, unless they entered the room
later or were incapable of exiting on
their own. The analysis focused on
reduction of deaths and injuries because
the proposed standard is designed to
limit fire intensity and spread rather
than prevent ignition.
Each investigation was evaluated by
CPSC staff reviewers to identify the
features related to the occurrence of a
death or injury once the fire was ignited.
These included casualty age, casualty
location when the fire started (at the
point of ignition, in the room of origin
but not at the point of ignition, or
outside the room of origin), whether the
casualty was asleep, or suffered from
additional conditions likely to increase
the time needed to escape, whether the
casualty engaged in fighting the fire, and
whether a rescuer was present. All of
these conditions were used to determine
a range for the likelihood that each
individual death or injury would have
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been prevented had the draft proposed
standard been in effect. Percentage
reductions of deaths (injuries) within
subcategories of heat source and age
group were applied to equivalent
subcategories of the national estimates
based on the NFIRS and NFPA data for
1995–1999. The estimated reductions
per category were summed and the
overall percentage reductions were
calculated as the percent of addressable
deaths (or injuries) that would have
been prevented if the likelihood of
flashover were reduced in the first 30
minutes and victims had 10 to 15
minutes of escape time.
The staff indicates that the proposed
standard is expected to reduce all
addressable deaths from mattress/
bedding fires by 80 to 86 percent and
reduce all addressable injuries from
mattress/bedding fires by 86 to 92
percent. The results vary only slightly
by source of ignition. These estimated
effectiveness percentages result in the
prevention of an estimated 310 to 330
deaths and 1660 to 1780 injuries
annually, for the 1998–2002 period.
The staff’s analysis presents the
estimated annual deaths and injuries
that are expected to be prevented by the
proposed standard, based on average
figures for 1998–2002. For purposes of
this analysis, it is assumed that the
annual deaths and injuries prevented by
the proposed standard equal the average
annual deaths and injuries prevented for
the 1998–2002 period. The analysis is
conducted as if the standard went into
effect in 2004. All dollar estimates are
based on constant 2004 dollars. A
discount rate of 3 percent and average
expected lives of a mattress of 10 and
14 years are also assumed.
The estimated ranges of deaths and
injuries prevented are calculated by
applying the range of percent reductions
to average addressable deaths and
injuries for the period 1998–2002.
Staff’s analysis also presents the risk
reduction in deaths and injuries that
would result from the proposed
standard (per million mattresses). Based
on the estimated number of mattresses
in use (described in Section 4) and an
average expected life of 10 years, the
annual reduction in the risk of death
equals 1.33 deaths per million
mattresses (310 deaths divided by the
estimated 233 million mattresses in use
in 2004) to 1.42 per million mattresses
(330 deaths / 233 million mattresses).
The estimated reduction in the risk of
injury, similarly calculated, equals 7.12
to 7.64 injuries per million mattresses
for an estimated 10-year life of a
mattress. The estimated risk reductions
for an estimated 14-year life of a
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mattress are 1.02 to 1.09 deaths and 5.49
to 5.88 injuries per million mattresses.
Annual risk reductions resulting from
the proposed standard are used to
derive the monetary benefits from
reduced deaths and injuries. The
estimated reduction in the risk of death
is multiplied by the value of a statistical
life (and divided by a million) to derive
a first-year monetary estimate for the
range of benefits from lives saved per
mattress. Based on the existing
literature, a value of a statistical life of
five million dollars is assumed (Viscusi,
1993). The estimated reduction in the
risk of injury is similarly used to derive
the range of first-year monetary benefits
from injuries prevented. The benefits
from preventing an injury (the cost of an
injury) in 2004 are estimated to average
about $179,300, based on Miller et. al.
(1993). The first-year benefits associated
with preventing deaths and injuries
equal $7.93 to $8.45 for an estimated
mattress life of 10 years and $6.11 to
$6.51 for an estimated mattress life of 14
years.
Lifetime benefits are derived by
projecting annual benefits for the life of
the mattress and summing the
discounted (at a rate of 3 percent)
stream of annual benefits (measured in
constant dollars). The number of
mattresses in use is projected to grow at
a rate of zero to three percent, based on
the average growth rate for the 1981–
2002 period. Since the number of deaths
and injuries are implicitly assumed to
remain constant over time, a positive
growth rate of mattresses in use implies
a declining risk over time. The lower
end of the ranges for estimated (10 and
14 years) lifetime benefits correspond to
a 3 percent projected growth rate and
the lower end of the effectiveness
ranges. The upper end of the ranges for
estimated (10 and 14 years) lifetime
benefits correspond to a zero percent
projected growth rate and the upper end
of the effectiveness ranges. For an
expected mattress life of 10 years, the
resulting expected lifetime benefits of
saved lives associated with the
proposed standard equal $51.70 to
$62.22 per mattress. The corresponding
benefits of prevented injuries equal
$9.93 to $12.03. Hence, for an expected
mattress life of 10 years, the expected
total lifetime benefits of a compliant
mattress equal $61.66 to $74.25. For an
expected mattress life of 14 years, total
benefits equal $59.88 to $75.71 per
mattress. The sensitivity analysis
section below examines how the results
might change when a discount rate of
seven percent is used.
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7. Expected Costs of the Proposed
Standard
This section presents the expected
resource costs associated with the
proposed standard. Resource costs are
costs that reflect the use of a resource
that would have been available for other
uses had it not been used in conjunction
with the production of mattresses
compliant with the proposed standard.
These costs include material and labor
costs; testing costs; costs to wholesalers,
distributors, and retailers; costs of
producers’ information collection and
record keeping; costs of quality control/
quality assurance programs; and
compliance and enforcement costs. The
effect on retail prices will be discussed
in Section 8.
Material and Labor Costs. To comply
with the proposed standard, the
construction of most mattress/sets will
include a barrier technology with
improved fire performance. This barrier
may be thick (high-loft) or thin (sheet).
High-loft barriers are generally used to
replace some of the existing non-woven
fiber, foam, and/or batting material,
leading to a smaller increase in costs
than sheet barriers, which constitute an
addition to production materials (and
costs).
According to several barrier producers
and mattress manufacturers, the price of
a high-loft barrier that would make a
mattress comply with the proposed
standard, defined to have a width of 88
to 92 inches, is $3.00 to $5.00 per linear
yard. The high-loft barrier replaces the
currently-used polyester batting, which
costs an average of $0.50 to $1.70 per
linear yard. Hence, the net increase in
the cost attributed to the use of the highloft barrier is $1.30 to $4.50 per linear
yard, which translates to a net increase
in barrier-related manufacturing costs of
$7.80 to $27.00 for a queen-size
mattress/set.4 The queen-size is used for
all the cost estimates, because it is the
mode size, used by 34 percent of
consumers in 2002.
According to several barrier producers
and mattress manufacturers, the price of
a sheet barrier that would make a
mattress comply with the proposed
standard is $4.00 to $6.00 per linear
yard. Because of its different texture, the
sheet barrier would generally not
replace any of the materials being used
in the construction of the mattress/set.5
4 This calculation is based on the assumption that
a queen-size mattress/set requires six linear yards
of the barrier mateiral to be used in the two (top
and bottom) panels of the mattress and the side
panels of both the mattress and foundation. Some
producers are able to use less than six linear yards,
which reduces their cost per queen mattress/set.
5 The only exception to this might involve using
a sheet barrier in the side panel of the mattress and
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This translates to $24.00 to $36.00 for a
queen-size mattress/set. The large
difference in the net cost of the two
barrier types suggests that if a barrier’s
fire performance is not a function of its
type, most manufacturers will use highloft barriers, the less costly alternative.
A large mattress manufacturer also
indicated that mattresses produced with
sheet barriers in the top panel of the
mattress (as opposed to the side panels)
may be less comfortable.
In addition to the increase in material
costs due to the use of a barrier, costs
will increase due to the use of fireresistant (FR) thread for tape stitching.
According to several thread producers,
the cost of FR thread is $0.41 to $0.60
per queen-size mattress/set. Given that
the cost of nylon (non-FR) thread is
about $0.10 per queen-size mattress/set,
the net increase in costs per queen-size
mattress/set due to the use of FR thread
is $0.31 to $0.50.
Costs may also increase due to
slightly reduced labor productivity.
Based on industry estimates of an
average of two labor hours for the
production of a queen-size mattress/set,
and a 10 percent reduction in labor
productivity and an industry average
hourly wage rate of $11.50, the cost
increase due to reduced labor
productivity is about $2.30.
The increase in the materials and
labor costs of a mattress, is thus equal
to $10.41 ($7.80 barrier cost + $0.31
thread cost + $2.30 labor cost) to $29.80
($27 barrier cost + $0.50 thread cost +
$2.30 labor cost) for a high-loft barrier
and $26.61 ($24.00 barrier cost + $0.31
thread cost + $2.30 labor cost) to $38.80
($36 barrier cost + $0.50 thread cost +
$2.30 additional labor cost) for a sheet
barrier.6 Various types of high-loft and
sheet barriers are widely available for
sale and therefore it is expected that
those whose prices are at the upper end
of the range will either not be produced
(because mattress manufacturers will
not buy them) or their prices will drop
foundation. Because the existence of cushioning
along the side of the mattress and foundation would
probably not be noticed or missed by consumers,
substitution of the sheet barrier for the material
currently being used in the side panel may be
implemented to reduce the cost of using the sheet
barrier. The side panel is small, relative to the size
of the entire surface area of a mattress/set, and its
possibly different construction is therefore not
included in the cost calculation. This leads to a
slight over-estimation of the cost of the sheet barrier
and consequently the relative cost of using a sheet
instead of a high-loft barrier.
6 Some producers are also using an FR mattress
edge binding tape, which costs an average of $2.52
per mattress, while a non-FR tape costs an average
of $1.68. This makes the net increase in costs, due
to using FR edge binding tape, equal to $0.84. This
cost is not added to the total production costs,
because it is not required for the mattress to pass
the burn test.
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(so that they can compete with other
barriers available for sale). Hence the
total materials and labor costs will most
likely be closer to the lower end of the
estimated range.
Costs of Prototype and Confirmation
Testing. Each mattress/set prototype is
required to be tested in triplicate for
prototype qualification. According to
industry representatives, the cost of
testing per twin-size mattress/set may be
about $500: the sum of the average cost
of the materials and shipping ($100) and
the cost of the use of the lab ($400).
Hence, the cost of testing three
mattresses/sets for prototype
qualification equals $1500.
Additionally, if some mattress/set
prototypes do not pass the first time,
then the cost will be higher, because
additional tests will be done after action
is taken to improve the resistance of the
prototype. If 10 percent of mattresses are
retested, then the average cost of testing
a prototype would be 10 percent higher,
or $1650. This cost is assumed to be
incurred no more than once per
establishment for each prototype. It is
expected that a qualified prototype will
be used to represent a mattress
construction (e.g., single-sided pillow
top) with all other prototypes using the
same construction (with different size
and different ticking materials) being
based on the qualified prototype. If
companies pool their prototype
definitions across different
establishments or different companies,
testing costs would be smaller as all but
one of the firms/establishments
producing to the specification of a
pooled prototype will burn one mattress
(for the confirmation test) instead of
three (for the prototype test). The
probability of a mattress failing a
confirmation test is small. Therefore, it
is expected that the average cost of
testing per mattress will be lower for
firms and/or establishments that pool
their results than for those that do not.
If manufacturers test every mattress
construction (e.g., single-sided pillow
top, double-sided pillow-top, tight-top,
euro-top, * * * etc.), which is
estimated, based on conversations with
manufacturers, to average about twenty
per manufacturer, for every
establishment in a given year, then their
average testing cost per mattress would
approximately equal 92.5 cents ($1650 ×
20 constructions × 639 establishments/
22.8 million conventional mattresses)
per mattress for the first year of
production. If manufacturers use a
qualified prototype of the least fireresistant mattress/set construction
(‘‘worst case’’) to represent other
mattress/set constructions, then the
average cost of testing per mattress for
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the first year of production will be
reduced. Pooling testing results across
establishments and/or firms will further
reduce the average cost of testing per
mattress. On an annual basis testing
costs will be further reduced because
prototypes need only be tested in the
year they are first developed.
Cost of Information Collection and
Record Keeping. In addition to
prototype testing, the proposed standard
will require detailed documentation of
all tests performed and their results
including video or pictures; prototype
or production identification number;
date and time of test; and name and
location of testing facility; test room
conditions; and test data for as long as
the prototype is in production and for
three years after its production ceases.
Manufacturers are also required to keep
records of a unique identification
number for the qualified prototype and
a list of the unique identification
numbers of each prototype based on the
qualified prototype and a description of
the materials substituted and/or the size
change. Moreover, they are required to
document the name and supplier of
each material used in construction of a
prototype and keep physical samples of
the material. Additionally, they are
required to identify the details of the
application of any fire retardant
treatments and/or inherently fire
resistant fibers employed relative to
mattress components. This
documentation is in addition to
documentation already conducted by
mattress manufacturers in their efforts
to meet the cigarette standard. Detailed
testing documentation will be done by
the test lab and is included in the
estimated cost of testing. Based on CPSC
Office of Compliance staff estimates, all
requirements of the proposed standard
are expected to cost an establishment
about 110 minutes, or 1.3 hours, per
qualified prototype. Assuming that
every establishment will produce 20
different qualified prototypes, the
increase in record keeping costs is about
$935 (110 minutes × 20 qualified
prototypes × $25.50 in average civilian
workers’ compensation per hour) per
establishment per year. (Note that
pooling among establishments or using
a qualified prototype for longer than one
year will reduce this estimate.) This
translates to an average cost of 2.6 cents
per mattress for an average
establishment, with average output of
35,681 conventional mattresses.
Cost of Quality Control/Quality
Assurance Programs. To ensure that all
mattresses are produced to the
prototype specification across all
factories and over the years for which a
production line exists, mattress
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manufacturers will need a thorough
well-documented quality control/
assurance program. The top 12 mattress
producers (with a market share of
almost 80 percent) have existing quality
control programs which could be
modified to fit the new standard with
minimal additional costs. Smaller
producers, whose quality control
programs are less detailed or nonexistent, will incur some incremental
costs as a result of the proposed
standard. These incremental costs will
be small for each manufacturer and less
when measured per mattress. (See the
section on impact of the proposed
standard on small businesses for a
description of their cost of quality
control and quality assurance
programs.)
Additionally, although the proposed
standard does not require production
testing, it encourages random
production testing to assure
manufacturers that their mattresses
continue to meet the requirements of the
rule, as a possible component of the
quality control/quality assurance
program. Assuming that an average of 3
mattress/foundation constructions will
be tested per establishment per year
yields an estimated cost of production
testing of about $1500. Based on this
assumption, the estimated cost of testing
mattress/foundation sets for quality
assurance purposes, therefore, equals
4.2 cents per mattress ($1500/35,681) for
an average establishment.
The labor needed to meet the quality
assurance measures required by the
standard is estimated by CPSC Office of
Compliance staff to be 224 minutes per
establishment per prototype per year.
Assuming that every establishment will
produce 20 qualified prototypes, the
increase in labor costs associated with
quality assurance requirements of the
proposed standard is about $1904 (224
minutes × 20 qualified prototypes ×
$25.50 average civilian workers’
compensation per hour) per
establishment per year. (Note that
pooling among establishments or using
a qualified prototype for longer than one
year will reduce this estimate.) This
yields an average cost of 5.3 cents per
mattress for an average establishment,
with average output of 35,681
mattresses. Hence total costs of quality
assurance/quality control programs may
average about 9.5 cents (4.2 + 5.3) per
conventional mattress per year.
Costs to Wholesalers, Distributors,
and Retailers. An added cost of the
proposed standard is the increase in
costs to wholesalers, distributors, and
retailers in the form of additional
storage, transportation, and inventory
financing costs. Since a mattress
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complying with the proposed standard
will not be bigger than a similar
mattress produced before the standard
becomes effective, storage and
transportation costs are not expected to
increase. Inventory financing costs will
increase by the average cost of
borrowing money, applied to the
wholesale price of a mattress over the
average inventory holding time period.
Since most mattress producers use justin-time production and have small
inventories, this additional cost will
probably not exceed ten percent of the
increase in production cost (which is
the sum of material, labor, testing,
record keeping, and quality assurance
costs). A ten percent mark-up is,
therefore, being used to measure the
cost to wholesalers, distributors, and
retailers. This yields a resource cost to
wholesalers, distributors, and retailers
equal to $1.15 to $3.98 per mattress/set.
Retail prices may increase by more than
the ten percent mark-up. Section 8
discusses the impact of the proposed
standard on retail prices of mattresses.
Costs of Compliance and
Enforcement. Compliance and
enforcement costs refer to the costs
incurred by CPSC to ensure that
manufacturers are complying with the
proposed standard. Based on past
experience with the existing mattress
standard, the estimated CPSC inspection
time spent per location (establishment)
equals 33 hours for inspection and 6
hours for sample collection. This yields
a cost per inspection of about $1,664.52
(39 hours × $42.68, the average wage
rate for CPSC inspectors). Additionally,
compliance officers spend an average of
20 hours per case, making their cost
equal to $1,032.80 (20 hours × $51.64,
the average hourly wage rate for
compliance officers). This yields an
average compliance and enforcement
total labor cost of $2,697.32 per
inspected establishment per year.
It should be noted that the expected
cost per establishment, if less than one
hundred percent of establishments are
inspected every year, equals the cost per
inspected establishment times the
probability that a given establishment
will be inspected. Though the
probability that a given establishment
will be inspected in a given year is not
known, assuming that a third of all
establishments will be inspected (i.e.,
about 213 establishments) yields a
compliance and enforcement total
expected labor cost of $899.11
($2,697.32 × (1⁄3)) per establishment per
year.
In addition to labor costs, CPSC will
incur testing costs. It should be noted
that the decision to collect samples after
an inspection visit is made at the
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discretion of the investigator and,
therefore an accurate assumption about
the number of samples collected and
sent for a burn test cannot be made. If,
based on inspection, samples from 10
percent of all inspected establishments
were to be collected and sent to a lab for
a burn test, and if samples representing
5 qualified prototypes are taken from
each of these establishments, then the
total cost of CPSC testing will be
$157,500 (5 qualified prototypes ×
$1,500 (the cost of testing up to 3
mattresses for each qualified prototype)
× 21 (10 percent of 213 inspected
establishments)). These assumptions
about frequency of testing yield an
expected cost of testing per
establishment of $246.48 ($157,500/
639).
Therefore the expected total CPSC
wage and testing costs associated with
the proposed standard per
establishment per year equal $1,145.59
($899.11 + $246.48). With an average
production of 35,681 mattresses per
establishment (22.8 million mattresses
divided by 639 establishments), the
average CPSC wage and testing costs
equal 3.2 cents per mattress ($1,145.59/
35,681). These costs are expected to
decrease over time as manufacturers
learn the requirements of the proposed
standard.
Total Resource Costs. Therefore total
resource costs (including material costs,
labor costs, costs of prototype and
confirmation testing, paperwork
collection and record keeping costs,
costs of quality control/quality
assurance programs, production testing
costs, costs to wholesalers, distributors,
and retailers, and costs of compliance
and enforcement) are estimated to range
from $12.63 to $43.86 per mattress. This
range includes both the high-loft and
sheet barriers. The section on the impact
of the proposed standard on small
businesses and other small entities
discusses how costs of testing and
quality control/quality assurance
programs may differ for small
businesses and strategies that small
manufacturers might adopt to reduce
these costs.
Projected Future Costs. It is possible
that costs associated with the standard
will decline over time. A supplier of fire
resistant barriers predicts that the price
of the barriers will decline by 40 percent
in the next two years, due to decreased
uncertainty and increased competition.
(They have already dropped
significantly since TB603 was
proposed.) The increase in labor costs
due to decreased productivity is
expected to be temporary and be
reduced when workers get more training
and/or the older machines get replaced
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with newer machines that are more
capable of handling the FR thread and
material used in fire resistant barriers.
Moreover, as noted above, prototype
testing costs are expected to decline
after the first year of the standard.
The proposed standard references an
effective date of twelve months
following publication of a final rule.
The costs reported here are based on the
assumption that supplier companies
will be able to maintain existing
capacity. If federal standards for
bedclothes and upholstered furniture
were mandated at the same time and
input producers were not given enough
time to increase their capacity, input
prices would rise in the short-run
because of increased demand for the FR
material used by all three industries.
Unquantifiable Costs. A mattress
manufacturer indicated that in response
to an FR mattress standard, the number
of models/styles produced may be cut
by half. If this response is typical, then
there may be a reduction in consumers’
utility, because of the reduction in
mattress types that they would have to
choose from. Others indicate that there
will be an aversion to producing doublesided mattresses, because it would be
harder for them to pass the burn test.
Double-sided mattresses possibly have a
longer expected life than single-sided
ones. To the extent that consumers
prefer double-sided mattresses to singlesided mattresses, the shift away from
producing double-sided mattresses
imposes a non-monetary cost. Though
unquantifiable, this reduction in choices
of construction type and design is an
added cost to consumers of the
proposed standard.
Another unquantifiable cost is the
possible increase in liability insurance
faced by mattress manufacturers.
Because the draft proposed standard
measures the performance of the entire
mattress when exposed to fire, and not
its individual components, liability will
be shared by input suppliers and
mattress manufacturers. Industry
representatives expect that
manufacturers’ liability insurance will
increase to reflect the additional
possibility of litigation. This increase,
however, cannot be quantified because
of the novelty of this performance test.
Compliance of more mattress firms with
the California TB 603 standard may
enable us to estimate the additional
liability insurance. Notice that any
increase in liability insurance faced by
FR input suppliers will be included in
the price charged for the FR inputs and
does not add to the total increase in
resource cost that is expected to result
from the proposed standard.
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8. Benefits and Costs of the Proposed
Standard
This section compares benefits and
costs of the proposed standard, presents
a sensitivity analysis, and highlights the
impact of the proposed standard on
retail prices, small businesses, children,
and the environment. The sensitivity
analysis examines the effect of changing
some of the assumptions used earlier.
The analysis shows that net benefits
continue to be positive under a
reasonable range of assumptions about
the death and injury effectiveness of the
proposed standard, the reduction in
injuries resulting from the proposed
standard, the value of a statistical life
estimate, the discount rate, or the
expected mattress life.
The expected aggregate lifetime
benefits associated with one year’s
production of mattresses (25.3 million
units) using a discount rate of three
percent and an expected 10-year
mattress life are $1.56 to $1.88 billion
($61.66 to $74.25 per mattress × 25.3
million mattresses). The corresponding
expected aggregate costs of the proposed
standard are $0.32 to $1.11 billion
($12.63 to $43.86 times 25.3 million).
The resulting net aggregate benefits
equal $0.45 to $1.56 billion ($17.79 to
$61.62 times 25.3 million). For a
mattress life of 14 years (and a 3 percent
discount rate), aggregate lifetime
benefits, costs, and net benefits of the
proposed standard associated with one
year of production are $1.52 to $1.92,
$0.32 to $1.11, and $0.41 to $1.60
billion respectively. The expected
benefits of the proposed standard will
accrue for a long period of time and
discounted net benefits will, therefore,
be much greater than net benefits
associated with only the mattress
production in the first year the standard
becomes effective.
Sensitivity Analysis. The previous
analysis compares benefits and costs of
the proposed standard using expected
mattress lives of 10 and 14 years, a
discount rate of 3 percent, an expected
effectiveness rate of the proposed
standard of 80 to 86 percent of deaths
and 86 to 92 percent of injuries, an
estimated value of a statistical life of 5
million dollars, and an estimated cost of
injury of $179,300. This section
examines the effect of changing any of
these assumptions on the expected net
benefits of the proposed standard.
Comparing expected benefits and
costs of the proposed standard, it is
clear that net benefits are expected to be
positive (i.e., expected total benefits
exceed expected costs) for an average
mattress life of 10 or 14 years. Though
increasing the expected mattress life
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from 10 to 14 years, while using the 3
percent discount rate, expands the
positive range of net benefits, it does not
affect the conclusion regarding net
benefits. A further increase of the
expected life of a mattress similarly
would not affect the estimate of net
benefits. For example, using the Product
Population Model estimate of the
number of mattresses in use based on an
expected mattress life of 18 years (equal
to 367.1 million mattresses) yields net
benefits of $14.42 to $64.49 per
mattress, using a discount rate of 3
percent.
Net benefits are also positive using
discount rates of 3 and 7 percent. Using
a 3 percent discount rate, net benefits
per mattress equal $17.79 to $61.62 for
an average life of 10 years and $16.01
to $63.08 for an average life of 14 years.
Using a 7 percent discount rate, net
benefits per mattress equal $9.36 to
$50.88 for an average life of 10 years
and $5.15 to $48.26 for an average life
of 14 years. Assuming a larger discount
rate reduces net benefits, because future
benefits reaped over the life of the
mattress contribute less to total benefits.
Net benefits are based on an estimated
value of a statistical life equal to $5
million. Changing the estimate used for
the value of a statistical life does not
have a major impact on the results. For
example, if $3 million, the lower bound
estimate in Viscusi (1993), is used as an
estimate of the value of a statistical life,
net benefits become -$2.90 to $36.73 per
mattress (using a 3 percent discount rate
and an estimated mattress life of 10
years).7 Alternatively, a $7 million
estimate, the higher bound estimate in
Viscusi (1993), yields net benefits equal
to $38.48 to $86.51 per mattress (using
a 3 percent discount rate and an
estimated mattress life of 10 years).
Changing the estimate used for the
cost of injury will have minimal impact
on the results, because the share of
benefits from reduced injuries is 16
percent of total benefits. Hence, even if
there were no reduction in injuries from
the proposed standard, the net benefits
would be $7.86 to $49.59 per mattress
(using a mattress life of 10 years and a
3 percent discount rate).
The analysis assumes that the
effectiveness of the proposed standard
ranges from 80 to 86 percent for deaths
and 86 to 92 percent for injuries. The
7 The range for net benefits was derived by
subtracting the upper end of the cost range from the
lower end of the benefits range to get the lower end
of the range for net benefits and subtracting the
lower end of the cost range from the higher end of
the benefits range to get the higher end of the range
for net benefits. Because of this method, both ends
of the range for net benefits are a very unlikely
occurrence.
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net benefits will remain positive, with a
lower effectiveness rate. For example,
assuming an effectiveness rate of
preventing death of only 55 percent
yields net benefits of $1.86 to $39.84 per
mattress and aggregate net benefits of 50
million to 1.01 billion dollars from all
mattresses produced the first year the
proposed standard is mandated (using a
mattress life of 10 years, a 3 percent
discount rate, and the same
effectiveness for injuries as used in the
baseline analysis). Also, assuming a
smaller number of deaths and injuries
before the proposed standard is
mandated (a smaller baseline risk)
would still result in positive net
benefits. A 25 percent reduction in
baseline death and injury risks yields
net benefits of $2.38 to $43.06 per
mattress and aggregate net benefits of
$60 million to $1.09 billion from all
mattresses produced the first year the
mattress standard is mandated (using a
mattress life of 10 years, a 3 percent
discount rate, and the estimated
effectiveness measures used in the
baseline analysis).
Impact on Retail Prices. One of the
top four mattress manufacturers in the
industry has re-merchandised its
product lines to lower the costs of other
materials so that total costs (and prices)
are the same as they were before the
production of mattresses that comply
with TB603. Other manufacturers have
indicated that they will have to increase
their price which, according to some
manufacturers and based on reported
traditional industry mark-ups, might
translate to an increase in the retail
price to consumers that could reach
approximately four-fold the increase in
manufacturer’s costs. Hence the average
increase in the price at which mattress
manufacturers are willing to sell their
products (supply price) will be
anywhere between the price of a similar
mattress without FR material and that
price plus four times the increase in the
costs of production. Given the presence
of at least one company that will not
increase the price, it is unlikely that the
new average price will be close to the
higher end of the range because of
competition for market share among
manufacturers.
The market (equilibrium) price is
determined by the intersection of
consumers’ willingness to buy and
producers’ willingness to sell the
product at different prices. The value
the equilibrium price will take (relative
to the price before the introduction of
fire resistant mattress/sets) will be
affected by the change in the demand
and supply curves for fire resistant
mattress/sets and their relative
elasticities. Assuming that the demand
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curve is unaffected, the equilibrium
price will reflect the price elasticity of
demand (i.e. the sensitivity of the
change in the quantity demanded to the
change in price) as well as the shift in
supply. In the short-run, consumers
have a relatively elastic demand curve,
because they can always postpone the
purchase of a durable good, and
therefore the increase in the equilibrium
price is expected to be much lower than
the increase in the supply price (what
producers would want to sell the same
number of mattress/sets for). Because of
the relatively high elasticity of demand,
sales are likely to decrease in the shortrun. In the long-run, the demand curve
is less elastic, and therefore the
equilibrium price and quantity (sales)
will be higher than the short-run price
and quantity.
Given the availability of mattresses
whose retail prices will not increase and
the competitive nature of the industry,
it is possible that, on average, prices
will rise by about twice the costs
associated with the standard (i.e., retail
price mark-up will average about twice
the increase in manufacturing costs).
Under this assumption, consumers
would pay an additional $22.91 ($11.46
× 2) to $79.69 ($39.85 × 2) per mattress/
set (compared to the price they would
have paid for a current mattress that
does not comply with the proposed
standard.8 Assuming that the demand
curve for mattresses is unaffected by the
draft proposed standard, some
consumers will choose not to purchase
(or at least delay the purchase of) a new
mattress/set. These consumers who
delay or choose not to purchase a new
set will not be getting the value (or
benefits) that they would have gained
from purchasing a new set. This loss,
though difficult to quantify, is
sometimes measured as a loss in
consumer surplus (McCloskey, 1982).
It is unlikely, however, that the poststandard demand curve for mattresses
will be the same as the current demand.
Early 2004 market observations indicate
consumer and retail enthusiasm about
the fire resistant mattresses already
available for sale (Furniture Today,
April 26th, 2004.) If this enthusiasm
generally reflects consumers’
preferences, then the demand for
mattresses may increase. This would
tend to offset any reduction in mattress
sales and possible losses in consumer
surplus.
8 These cost figures include labor and material
costs; testing costs; record-keeping costs; and
quality assurance program costs. They do not
include the costs to wholesalers, distributors, and
retailers or compliance costs because they are not
incurred by the manufacturers.
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Impact on Small Businesses and
Other Small Entities. The increase in
material and labor costs to meet the
proposed standard is not likely to be
dependent on a firm’s size and will
therefore not disproportionately affect
small businesses. The cost imposed
disproportionately (per unit produced)
on small businesses will be the cost of
testing, information collection and
record keeping and quality control/
quality assurance programs. While these
costs are estimated to be a little over one
dollar per mattress per year for averagesized establishments, they could be
substantially higher for small mattress
manufacturers. The proposed rule
includes measures that these
manufacturers can use to minimize the
testing burden. Furthermore, firms with
more than one establishment, or
different firms, may be able to reduce
these costs by pooling their testing and
quality control programs over all
establishments or firms.
Use of pooling across establishments
and firms would ameliorate the impact
of the proposed standard on small
businesses. By getting together across
different states and regions, small
manufacturers who do not share a
common market (and therefore do not
compete with each other) can resemble
a large producer in their testing and
quality control/quality assurance efforts
and therefore reduce their costs per
mattress. It is also expected that some
barrier suppliers would be willing to do
the testing and quality control/
assurance programs for small
manufacturers in exchange for a small
charge, which will be similar to the
average cost per mattress for large
businesses, because the volume of
output will be large.
Impact on the Environment. The
extraction, processing, refinement, and
conversion of raw materials to meet the
proposed standard involve energy
consumption, labor, and the use of
potentially toxic chemicals. Most
manufacturing has some impact on the
environment, and manufacturing fire
resistant mattresses is no exception.
Because the proposed standard is a
performance standard, it does not
restrict manufacturers’ choice of fire
resistant materials and methods that
could be used in the production of
mattresses. There appear to be several
economically viable options to meet the
standard that, based on available
information, do not impose health risks
to consumers or significantly affect the
environment. (See discussion at Section
N of this preamble.)
Impact on Children. Deaths and
injuries among children constitute a
substantial proportion of mattress-
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related fire losses, and of the potential
benefits of the proposed standard. A
CPSC staff report, based on a field
investigation study in 1995 to learn
more about cigarette-ignited fires and
open-flame fires, found that 70 percent
of open-flame fires involved child play
and that child play was involved in 83
percent of the 150 deaths of children
less than five years of age. A National
Association of State Fire Marshals 1997
study also indicated that 66 percent of
the small open-flame ignitions were
reportedly started by children under the
age of 15 (21 percent by children under
5).
For virtually all of the fires started by
children less than 15 years of age, the
ignition was not witnessed by an adult
(Boudreault and Smith, 1997). Reducing
the likelihood of flashover in the first 30
minutes of the fire may therefore benefit
children disproportionately, as it allows
enough time for adults to detect the fire
and save young children in close
proximity to the fire. Also children
between 5 and 9 who sometimes do not
cooperate with adults and run away
from adults to other parts of the
occupancy will have enough time to be
found and rescued by an adult.
The Epidemiology staff’s
memorandum shows that, based on
national fire estimates for the years
1995–1999, children younger than 15
accounted for 27 percent of addressable
deaths and 23 percent of addressable
injuries. They also indicate that the
proposed standard would reduce deaths
and injuries to children ages 5 and
younger by 85 to 92 percent and 80 to
87 percent respectively. Deaths and
injuries to children ages 5 to 14 were
estimated to be reduced by 94 to 97
percent and 88 to 94 percent
respectively. This represents a total of
100 to 110 deaths of children less than
15 years of age per year for the 1995–
1999 period. It also represents 410 to
440 injuries to children less than 15
years of age for the same period.
resource costs to manufacturers of a
queen mattress/foundation set by $15.06
to $50.65 compared to non-complying
products (i.e., those not conforming to
the proposed standard.) 9 Adding the
costs to wholesalers, distributors, and
retailers, the costs of testing, quality
control/assurance programs, recordkeeping, and CPSC compliance efforts,
yields a total resource cost of the stricter
standard (150 kW and 60 minutes) of
$16.59 to $55.74 (costs to manufacturers
{$15.06 to $50.65} + cost to wholesalers,
distributors, and retailers, equal to 10%
of costs to manufacturers {$1.51 to
$5.06} + 3.2 cents CPSC compliance
costs) per mattress. This represents a
marginal increase in costs of $3.96
($16.59¥$12.63) to $11.88
($55.74¥$43.86) over the costs
associated with the proposed
standard.10
Such increase in costs would likely
result in consumers facing higher
mattress prices. Based on traditional
industry mark-ups, the new price may
reflect a two- to four-fold increase over
the increase in production costs,
depending on the relative elasticity of
demand and supply for mattresses. This
yields a total increase in the average
price of a queen mattress/set of $30.11
(2 × $15.06) to $202.58 (4 × $50.65).
Potential benefits of the stricter standard
could be higher than the proposed
standard, but the extent is uncertain.
Given an effectiveness rate of greater
than 80 percent of the proposed
standard, the additional benefits of
stricter test requirements are limited.
Assuming that the stricter standard
could eliminate 50 percent of the
remaining deaths and injuries (i.e., it
could save 39 additional lives and
prevent 136 additional injuries), then an
additional benefit of about $7.66 per
mattress would be expected. This
additional benefit, however, would
come with additional costs (discussed
above) and therefore may reduce net
benefits. Moreover, a small increase in
9. Alternatives to the Proposed Standard
Alternative Maximum Peak Heat
Release Rate (PHRR) and Test Duration.
The initial California TB 603 proposal
required the duration of the test to last
60 minutes with a maximum PHRR of
150kW. After receiving comments on
this proposal, the California Bureau of
Home Furnishings and Thermal
Insulation changed the criterion to a
maximum of 200 kW PHRR in the first
30 minutes, the requirement for both the
federal proposed standard and the
current TB 603.
Increasing the duration of the test and
reducing the PHRR would, according to
several input suppliers, increase the
9 The lower end of the range is based on barrier
price of one supplier, whose capacity is expected
to meet 25 to 30 percent of the whole market
demand in the short run. The next cheapest
alternative costs $24 for the barrier material alone.
10 These cost estimates (and the resulting
marginal increase) should be viewed as
approximate since no extensive tests of the barriers
have been conducted for 60 minutes, as most
manufacturers are focused on meeting the less strict
requirements. Input suppliers generally do not
assemble and test large numbers of mattresses, and
may therefore underestimate reduced labor
productivity and/or reduced output per machine
(compared to a maximum PHRR of 200 kW for a
30-minute test) due to handling the thicker denser
barrier. A number of mattress producers estimate
that to meet the stricter standard, manufacturing
costs would increase (over those of non-compliant
mattresses) by $50 to $70 for a queen-sized set
(Furniture/Today, July 21, 2004).
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net benefits may not justify the large
increase in retail price that would result
from a stricter standard.
A bedding official estimated that such
price increases may result in reduction
in sales of 25 percent or more
(Furniture/Today, July 21, 2004). The
larger increase in prices (compared to
the less strict test requirements) and the
resulting reduction in sales could drive
some of the smaller manufacturers out
of business. (The stricter standard is
more likely to require replacing some
existing machines to accommodate the
denser barrier material, which would be
disproportionately more costly for
smaller firms whose machinery is older
and less sophisticated.) Since mattresses
are durable goods, one would expect a
larger drop in sales in the short-run, as
consumers choose to keep their old
mattresses longer than before. This
would make the reduction in sales more
pronounced in the short-run, increasing
the likelihood that some firms may exit
the market. Moreover, if a large number
of consumers choose to extend the life
of their mattresses for a longer time
period, it will take longer to achieve the
benefits expected to be associated with
the safer mattresses.
Alternative Total Heat Released in the
First Part of the Test. TB 603 limits the
total heat released during the first 10
minutes of the test to 25 MJ. The
proposed standard’s stricter limit (15 MJ
in the first 10 minutes) reduces the
expected size of the initial fire and
hence allows consumers a greater
chance to escape the fire and get out of
the room, even if the room never
reaches flashover. The effectiveness
rates presented in the analysis are based
on the stricter criterion. Using the TB
603 criterion (25 MJ in the first 10
minutes) would likely reduce estimated
benefits (the estimated reductions in
deaths and injuries), without having any
significant effect on costs. According to
several producers, mattresses that use
existing barrier technology release total
heat that is far below the 25 MJ
requirement of TB 603. Therefore, using
the TB 603 criterion for the total heat
released would not change costs but
could potentially reduce the benefits
and, hence, the net benefits of the
proposed standard.
Moreover, because of the small fuel
load of ticking materials currently being
used, the lower total heat release
requirement allows the production of
mattress/sets based on a prototype that
has not been tested so long as it differs
from the qualified prototype only with
respect to ticking and the ticking
material is not part of the fire resistance
solution. Requiring a test for every
prototype with a different ticking was
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rejected because of the magnitude of the
burden it would impose on small
manufacturers who do not produce large
numbers of any one prototype and who
would have been disproportionately
adversely affected by these
requirements.
Alternative Testing Requirements.
The proposed standard requires
prototype testing (of three mattress/sets)
before a manufacturer starts production
of a given mattress design and a
confirmatory test of one mattress if more
than one establishment or firm are
pooling their results. Manufacturers
may sell a mattress/set based on a
prototype that has not been tested if that
prototype differs from the qualified
prototype only with respect to: (1)
Mattress/foundation size; (2) ticking,
unless the ticking of the qualified
prototype has characteristics designed
to improve the performance on the burn
test; and/or (3) any component,
material, or method of construction that
the manufacturer can demonstrate on an
objectively reasonable basis will not
cause the prototype to exceed the test
criteria. Though production testing (i.e.,
random burning of mattress/sets to
ensure that all production units meet
the standard) is encouraged by the
proposed standard under quality
assurance program requirements, it is
not required. The individual
manufacturer’s decision on whether to
conduct production testing (and if so, at
what frequency) will clearly depend on
the efficacy of his/her quality assurance/
control efforts.
As an alternative, the proposed
Federal standard could, like TB 603,
omit testing or prototype definition
requirements. Without testing, however,
it might be difficult for manufacturers to
know whether their mattresses will
comply with the standard.
Alternatively, the standard could
require production testing with a
specified frequency. This specification,
however, could result in unnecessary
costs if they are not justified given the
quality control measures generally
undertaken by manufacturers in the
absence of the proposed standard.
Requiring more tests per establishment,
prototype, or enterprise will increase
the estimated costs per mattress and
could reduce net benefits.
Alternative Effective Date. The
proposed effective date is twelve
months from the date of publication of
the final rule in the Federal Register.
Given the length of time needed to
ensure the availability of inputs for the
production of barrier materials,
availability of barriers for mattress
producers, and a sufficient volume of
inventories at retailers’ showrooms, an
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earlier effective date may result in
higher input costs to manufacturers.
More importantly, it is expected that
smaller manufacturers will be
disproportionately affected, as they are
more likely to wait to invest in
development efforts until the
technology is developed by larger firms,
or until the proposed standard becomes
effective. A later effective date (longer
than twelve months) could reduce
expected net benefits as more fires,
deaths, and injuries associated with
mattresses would occur between the
date of publication in the Federal
Register and the date the standard
becomes effective. The staff is unaware
of evidence that small manufacturers
would be negatively impacted by a
twelve months period relative to a
longer period, such as eighteen or
twenty-four months. The Commission is
requesting comments from small
businesses on the expected economic
impact of the effective date and other
requirements of the proposed rule (see
section M of this document below).
Taking No Action or Relying on a
Voluntary Standard. If the Commission
chose to take no action, California may
attempt to enforce its standard despite
the Commission General Counsel’s
position on preemption. Larger
producers are already moving to comply
with California’s standard. They also
want to avoid product liability claims
associated with selling mattresses with
different fire resistance in other areas of
the country. Three of the largest four
producers plan to meet TB 603
nationwide by the end of 2005. Some
small California manufacturers may
have a smaller incentive to meet TB 603
than a Federal standard. Small
manufacturers who do not sell in
California may similarly have no
incentive to sell mattresses that meet TB
603 requirements in other parts of the
country. Hence, expected aggregate net
benefits associated with the draft
proposed standard are higher than the
net benefits that might result under
California TB 603 even if it could be
enforced in the face of preemption
concerns.
No effort has been undertaken to
develop a voluntary standard.
Furthermore, industry representatives
support a mandatory standard to level
the playing field among domestic
producers (large and small) and
importers. If a voluntary standard were
developed, the economic burden would
fall primarily on the larger firms (who
would likely be the first to comply),
their market shares could be reduced
and benefits to consumers (in terms of
reduced deaths and injuries) would
likely decline accordingly.
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Labeling Requirements. The
Commission could require labeling on
mattresses to warn consumers in lieu of
a standard. Labeling is not considered
an effective option for reducing the risk
of fires. Since mattress labels are usually
covered by bedclothes and may not be
seen by the mattress users, labeling
mattresses is likely to be an ineffective
means of warning consumers. Moreover,
fires started by children who cannot
read or do not change the bed sheets
will not be reduced by a labeling
requirement. Hence, while labeling
costs are probably negligible, labels are
unlikely to reduce mattress fires.
Labeling of chemically treated
components has been suggested as a
possible requirement of the draft
standard, to inform consumers of the
materials used. The costs of such
labeling would also be negligible, since
existing mattresses have labels and
producers could probably add a
description of the chemical treatment (if
any) to the existing label. Labeling of
chemically treated components could
provide small unquantifiable benefits to
consumers as it would provide some
additional information. However,
because a label would only provide the
name of any chemical treatment without
any information about whether the
treatment has any potential health
effects, it would be of little practical use
for the consumer. Information on the
use of chemically treated components
is, however, required as part of the
record keeping requirements of the
standard.
L. Paperwork Reduction Act
The proposed standard will require
manufacturers (including importers) of
mattresses/sets to perform testing and
maintain records of their testing and
quality assurance efforts. For this
reason, the rule proposed below
contains ‘‘collection of information
requirements,’’ as that term is used in
the Paperwork Reduction Act, 44 U.S.C.
3501–3520. Therefore, the proposed rule
is being submitted to the Office of
Management and Budget (‘‘OMB’’) in
accordance with 44 U.S.C. 3507(d) and
implementing regulations codified at 5
CFR 1320.11. The estimated costs of
these requirements are discussed below.
Costs of Prototype and Confirmation
Testing. According to industry
representatives, the cost of testing per
twin-size mattress/set may be about
$500: the sum of the average cost of the
materials and shipping ($100) and the
cost of the use of the lab ($400). Hence,
the cost for testing three specimens as
required by the proposed rule
mattresses equals $1500. This cost is
assumed to be incurred no more than
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once per establishment for each
prototype. If manufacturers test every
mattress construction (e.g., single-sided
pillow top, double-sided pillow-top,
tight-top, euro-top, * * * etc.), which is
estimated, based on conversations with
manufacturers, to average about 20 per
manufacturer, for every establishment in
a given year, then the estimated
industry testing cost per establishment
per year would approximately equal
$30,000. The total number of
establishments producing conventional
mattresses in 2001 was 639. Using an
estimated number of 739 producers of
both conventional and unconventional
mattresses, the annual cost to all
(conventional and unconventional)
mattress producers is $22.17 million.
Cost of information collection and
recordkeeping. In addition to prototype
testing, the proposed standard will
require detailed documentation of
prototype identification and testing
records, model and prototype
specifications, inputs used, name and
location of suppliers, and confirmation
test record, if establishments choose to
pool a prototype. This documentation is
in addition to documentation already
conducted by mattress manufacturers in
their efforts to meet the cigarette
standard. Detailed testing
documentation will be done by the test
lab and is included in the estimated cost
of testing. Based on CPSC Office of
Compliance staff estimates, all
requirements of the proposed standard
are expected to cost an establishment
about 110 minutes, or 1.3 hours, per
qualified prototype. Assuming that
every establishment will produce 20
different qualified prototypes, the
increase in record keeping costs is about
$935 (110 minutes × 20 prototypes ×
$25.50 in average civilian workers’
compensation per hour) per
establishment per year. (Note that
pooling among establishments or using
a prototype qualification for longer than
one year will reduce this estimate.) This
translates to an annual cost to all
(conventional and unconventional)
mattress producers of $690,965 ($935 ×
739).
Cost of quality control/quality
assurance programs. To ensure that all
mattresses are produced to the
prototype specification across all
factories and over the years for which a
production line exists, mattress
manufacturers will need a thorough
well-documented quality control/
assurance program. The top 12 mattress
producers (with a market share of
almost 80 percent) have a existing
quality control programs which could
be modified to fit the new standard with
minimal additional costs. Smaller
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producers, whose quality control
program is less detailed or non-existent,
will incur some incremental costs as a
result of the proposed standard. These
incremental costs will be small for each
manufacturer and less when measured
per mattress. (See the section on impact
of the proposed standard on small
businesses for a description of their cost
of quality control and quality assurance
programs.)
Additionally, the proposed standard
encourages random production testing
to assure manufacturers that their
mattresses continue to meet the
requirements of the rule. Assuming that
an average of 3 mattress/set
constructions will be tested per
establishment per year yields an
estimated cost of production testing of
about $1500. The labor needed to meet
the quality assurance measures required
by the standard is estimated by CPSC
Office of Compliance staff to be 224
minutes per establishment per qualified
prototype per year. Assuming that every
establishment will produce twenty
different qualified prototypes, the
increase in labor costs associated with
quality assurance requirements of the
draft proposed standard is about $1904
(224 minutes × 20 qualified prototypes
× $25.50 average civilian workers’
compensation per hour) per
establishment per year. Hence total
costs of quality assurance/quality
control programs may average about
$3,404 ($1500+1904) per establishment
per year. This translates to an annual
cost to all (conventional and
unconventional) mattress producers of
$2,515,556 ($3,404 × 739).
M. Initial Regulatory Flexibility
Analysis
1. Introduction
The Regulatory Flexibility Act
(‘‘RFA’’) generally requires that agencies
review proposed rules for their potential
economic impact on small entities,
including small businesses. Section 603
of the RFA calls for agencies to prepare
and make available for public comment
an initial regulatory flexibility analysis
describing the impact of the proposed
rule on small entities and identifying
impact-reducing alternatives.
Accordingly, staff prepared an initial
regulatory flexibility analysis for the
mattress proposed rule. 9 A summary of
that analysis follows.
2. Impact on Small Businesses and
Other Small Entities
Summary of proposed requirements.
The proposed standard will apply to
all mattresses and mattress and
foundation sets, as discussed earlier in
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this document (see section G.2. above).
Options that manufacturers may choose
in order to meet the proposed standard
include one or a combination of the
following: fire resistant ticking;
chemically treated or otherwise fire
resistant filling products; or a fire
blocking barrier (either a sheet style
barrier or a high-loft barrier, sometimes
called a fiber barrier).
For each qualified prototype, three
mattresses/sets must be tested and must
pass the test requirements. To obtain a
passing result, each mattress/set must
pass a 30 minute test, where the PHRR
does not exceed 200 kW and the total
heat release does not exceed 15 MJ in
the first 10 minutes of the test. A failure
of any of the sets would require that the
problem be corrected and the prototype
be retested and pass the test (in
triplicate). Manufacturers may sell any
mattress/foundation set based on a
qualified prototype. Manufacturers may
also sell a mattress/set based on a
prototype that has not been tested if that
prototype differs from a qualified
prototype only with respect to (1)
mattress/foundation size; (2) ticking,
unless the ticking of the qualified
prototype has characteristics designed
to improve performance on the burn
test; and/or (3) any component,
material, or method of construction that
the manufacturer can demonstrate,
based on an objectively reasonable
basis, will not cause the prototype to
exceed the test criteria specified above.
If one or more establishments (plants
within the same firm) or independent
firms choose to ‘‘pool’’ prototypes, then
each pooling plant or firm is required to
conduct a confirmation test for one
mattress/set it produces locally. If that
set fails, then its producer cannot sell
mattresses based on that prototype
unless it successfully tests another
mattress/set after correcting its
production to make sure that it is
identical to the original prototype. A
pooling firm may sell other mattresses
that have not been tested by the pooling
firm if they differ from the pooled
prototype only with respect to (1)
mattress/foundation size; (2) ticking,
unless the ticking of the qualified
prototype has characteristics designed
to improve performance on the burn
test; and/or (3) any component,
material, or method of construction that
the manufacturer can demonstrate,
based on an objectively reasonable
basis, will not cause the prototype to
exceed the test criteria specified above.
Manufacturers are required to keep
records of all tests performed and their
results, including video or pictures,
prototype identification number, date
and time of test, name and location or
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testing facility for as long as the
prototype is in production and for three
years after its production ceases.
Manufacturers are also required to keep
records of a unique identification
number for the qualified prototype and
a list of the unique identification
numbers of all other prototypes based
on the qualified prototype, together with
a description of the material substituted
and/or size change. Moreover, they are
required to document the name and
supplier of each material used in
construction and keep physical samples
of the material. Additionally, they are
required to identify the details of the
application of any flame retardant
treatments and/or inherently flame
retardant fibers employed relative to
mattress components. Finally, they are
required to have an adequate quality
assurance program in place.
Impact on small businesses. The
proposed standard covers manufacturers
and importers of mattresses. There were
557 mattress firms and 639 mattress
establishments in 2001, according to the
Statistics of U.S. businesses, Census
Bureau data. All but the largest twelve
firms had less than 500 employees. The
U.S. Small Business Administration’s
Office of Advocacy defines a small
business as one that is independently
owned and operated and not dominant
in its fields. A definition that is used
frequently and is less subject to
interpretation is a firm with fewer than
500 employees. The latter definition
classifies 97.8 percent ((557 ¥ 12)/557)
of all mattress firms as small businesses.
Average employment per firm for the
whole industry is 45.8 employees.
Average employment for the 1–4
employees per enterprise group, which
represents 22.98 percent of all firms, is
2.4 employees. Average employment for
the fewer than twenty employees per
enterprise group, which represents
61.22 percent of all firms, is 6.2
employees. Hence more than half of
mattress firms have fewer than twenty
employees.
In addition to domestic producers,
importers will be affected by the
proposed standard. Imported mattresses
represent less than two percent of total
U.S. shipments.
The increase in material and labor
costs of the proposed standard
(estimated to be $10.41 to $38.80 per
mattress) is not likely to be dependent
on a firm’s size and will therefore not
adversely affect small businesses. Larger
firms are bearing all the capital
investment costs of research and
development, sharing some of these
costs with input suppliers. Most smaller
firms are waiting to buy from the
suppliers a barrier solution, which has
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been tested extensively and is known to
meet the standard. The price smaller
firms pay to cover the development and
testing costs borne by the supplier will
not disproportionately impact them,
because it is not measured relative to
their small output, but relative to the
supplier’s output. Other smaller firms
may combine their development efforts
to be able to benefit from dividing the
costs over a larger number of firms.
Finally, small mattress producers who
do not assemble the mattress panels, but
buy them from a panel supplier are
effectively acting as a large producer by
combining all their output. This is
because the panel supplier will be
responsible for including a barrier in the
panel assembly and will pass that cost
on to the mattress producers, again not
disproportionately impacting the small
producers who buy the already
assembled panels.
The cost imposed disproportionately
(per unit produced) on small businesses
will be the cost of testing, information
collection and record keeping, and
quality control/quality assurance
programs. While the regulatory analysis
estimates these costs to be a little over
one dollar per mattress per year for
average-sized establishments, they
could be substantially higher for small
mattress producers. If manufacturers use
a prototype qualification to produce
mattress/set constructions for longer
than a year, or if they use a worst-case
prototype to represent other mattress
constructions, these costs will be lower.
Furthermore, firms with more than one
establishment may be able to reduce
these costs by pooling their testing and
quality control programs over all
establishments. Small independent
firms could also pool their testing to
reduce their costs per mattress.
Use of pooling across establishments
and firms would ameliorate the impact
of the proposed standard on small
businesses. By getting together across
different states and regions, small
manufacturers who do not share a
common market (and therefore do not
compete with each other) can resemble
a large manufacturer in their testing and
quality control/quality assurance efforts
and therefore reduce their costs per
mattress. It is also expected that some
barrier suppliers would be willing to do
the testing and quality control/
assurance programs for small
manufacturers in exchange for a small
charge, which will be similar to the
average cost per mattress for large
businesses, because the volume of
output will be large.
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3. Alternatives and Their Possible Effect
on Small Businesses
Alternatives considered by the
Commission are discussed in the
Preliminary Regulatory Analysis section
of this preamble (Section K). As
discussed therein, increasing the
duration of the test and reducing the
PHRR would increase costs without
necessarily increasing benefits. This
would necessitate an increase in costs.
Staff estimates the marginal increase in
costs to be $3.96 to $11.88 over the costs
of the proposed standard. Although a
stricter standard might increase benefits,
any increase is likely to be small since
the proposed standard has an
effectiveness rate of 80 percent.
An increase in costs would likely
result in an increase in mattress prices.
A bedding official estimated that such
price increases may result in reduction
in sales of 25% or more (Furniture/
Today, July 21, 2004). The larger
increase in prices (compared to the less
strict test) and the resulting reduction in
sales could drive some of the smaller
producers out of business. (A stricter
standard would be more likely to
require replacing some existing
machines, to accommodate the denser
barrier material, which would be
disproportionately more costly for
smaller firms, whose machinery is older
and less sophisticated.) Since mattresses
are durable goods, one would expect a
larger drop in sales in the short-run than
in the long-run, as consumers choose to
keep their old mattresses longer than
before. This would make the reduction
in sales more pronounced in the shortrun, increasing the likelihood that some
firms may exit the market. Moreover, if
a large number of consumers choose to
extend the life of their mattresses for a
longer time period, it will take longer to
achieve the benefits expected to be
associated with the safer mattresses.
As discussed in the preliminary
regulatory analysis, the Commission
also considered a different criterion for
the total heat released during the first 10
minutes of the test, i.e., 25 MJ instead
of the 15 MJ the Commission is
proposing. Using the 25 MJ criterion
would likely reduce estimated benefits
(the estimated reductions in deaths and
injuries), without having any significant
effect on costs. According to several
producers, mattresses that use existing
barrier technology release total heat that
is far below the 25 MJ level.
Moreover, because of the small fuel
load of ticking materials currently being
used, the lower total heat release
requirement allows the production of
mattress/sets based on a prototype that
has not been tested so long as it differs
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from the qualified prototype only with
respect to ticking and the ticking is not
part of the fire resistance solution.
Requiring a test for every prototype with
a different ticking was rejected because
of the magnitude of the burden it would
impose on small producers who do not
produce large numbers of any one
prototype and would have been
adversely affected by these
requirements.
The Commission also considered
alternative testing requirements. The
proposed standard requires prototype
testing (of three specimens of mattress/
sets) before a manufacturer starts
production of a given mattress design
and a confirmatory test of one mattress
if a firm is producing a mattress based
on a prototype produced by another
manufacturer in a pooling arrangement.
Although production testing (i.e.
burning mattress/sets to ensure that
production units meet the standard) is
encouraged by the proposed standard
under quality assurance program
requirements, it is not required. The
individual manufacturer’s decision on
the need for and frequency of
production testing will clearly depend
on the efficacy of its quality assurance/
control efforts.
As an alternative, the Federal
standard could, like TB 603, omit
testing requirements. However, without
testing, it might be difficult for
manufacturers to know whether their
mattresses will comply with the
standard. Alternatively, the standard
could require production testing with a
specified frequency. This specification,
however, could result in unnecessary
costs if they are not justified given the
quality control measures generally
undertaken by producers in the absence
of the proposed standard. Requiring
more tests per establishment, prototype,
or enterprise will increase the estimated
costs per mattress and could reduce net
benefits.
The Commission also could have
chosen to take no action. In this
situation, the larger producers would
probably follow TB 603 for all their
mattresses, not just those sold in
California, in order to avoid product
liability claims. Some small California
manufacturers may decline to meet TB
603 on the basis that it is preempted by
the existing federal standard. Small
manufacturers who do not sell in
California may have no incentive to
meet TB 603 requirements throughout
the country. Hence, expected aggregate
net benefits associated with the draft
proposed standard are higher than the
net benefits that might result under
California TB 603.
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Another possible option would be to
require labeling on mattresses to warn
consumers in lieu of a standard.
However, as discussed in the
Preliminary Regulatory Analysis,
labeling is not likely to be effective at
reducing mattress-related deaths and
injuries.
A final possible option might be to set
a later effective date for small
companies. If needed, this could allow
smaller companies more time to prepare
for the standard since they are less
likely to be currently preparing for
California’s similar TB 603. However,
the Commission has no evidence at this
time that a split effective date is
necessary.
4. Conclusion
Almost all mattress firms would be
considered small businesses, using the
Small Business Administration
definition. Material and labor costs for
all firms are expected to initially
increase on average by $10–$39 dollars
per mattress set produced. These cost
increases are expected to be borne
equally by all firms and hence do not
have an adverse impact on the smaller
mattress producers. These costs are
expected to decline in the future due to
improved technology of producing fire
retardant materials and increase
competition among input suppliers.
Although testing and recordkeeping
requirements may have a
disproportionate impact on small
manufacturers, the proposed standard
allows manufacturers to pool test
results, to vary their tickings without
new prototype testing (unless the
ticking had characteristics designed to
improve performance on the specified
mattress test), and to make other
changes in their prototype without new
prototype testing if the change does not
negatively effect the mattress’s ability to
meet the test criteria. These options
should minimize burdens on small
businesses.
The Commission requests comments
on any or all of the provisions in the
proposed rule with regard to : (1) The
impact of the provisions (including any
benefits and costs), if any, on small
entities and (2) what alternatives, if any,
the Commission should consider, as
well as the costs and benefits of those
alternatives to small entities in light of
the above analysis. The Commission is
particularly interested in information
with regard to the impact of the
following aspects of the proposed rule:
• Prototype and confirmation testing
requirements
• Quality Control/quality assurance
program requirements
• Recordkeeping requirements
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2491
• Twelve month effective date
Also, it would be most useful to
receive comments on ways in which the
proposal could be modified to reduce
any costs or burdens for small entities,
and whether and how technological
developments could reduce the costs for
small entities of complying with the
rule.
N. Environmental Considerations
General. Usually, CPSC rules
establishing performance requirements
are considered to ‘‘have little or no
potential for affecting the human
environment,’’ and environmental
assessments are not usually prepared for
these rules (see 16 CFR 1021.5 (c)(1)).
However, in order to meet this standard,
many manufacturers will need to
change some materials that they use to
manufacture mattresses: either using
more inherently flame resistant
materials or incorporating flame
retardant (FR) chemicals into their
products. Therefore, the Commission
concluded that a more thorough
consideration of the potential for
environmental impacts is warranted.
The staff’s analysis contained in the
memorandum ‘‘Preliminary
Environmental Assessment of a Draft
Proposed Open-Flame Ignition
Resistance Standard for Mattresses,’’ [7]
concludes that since the proposed
standard states performance
requirements, manufacturers will have
several options for meeting the
requirements of the proposed standard.
Although there are still some unsettled
questions, there appear to be numerous
promising methods that manufacturers
could use without posing an
unacceptable health risk to consumers
or significantly affecting the
environment. Moreover, even if a
chemical used by some manufacturers
were shown to pose an unacceptable
risk to human health or the
environment, there would be various
regulatory and other mechanisms that
could be used to remove the chemical
from applications where it poses a risk.
Possible approaches to meet the
proposed standard. The standard does
not prescribe the means that
manufacturers must use to meet the
standard. The staff expects, however,
that most manufacturers will use some
kind of flame resistant barrier to protect
the mattress components with the
greatest combustible fuel loads from the
flames. These barriers may be fabric,
batting, or other materials that are either
inherently flame resistant or that have
been treated with flame retardant
chemicals. [6&7]
Because manufacturers are now
evaluating their alternatives, the staff
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does not know the methods that each
manufacturer will use to meet the
proposed standard. Therefore, the staff’s
analysis attempts to provide some
context for considering the
environmental impacts of the standard.
More definitive conclusions should be
possible as more information
concerning the methods that
manufacturers will use to meet the
standard becomes available.
How the proposed standard could
affect the environment. About 25
million mattresses are sold annually,
and most will probably require some
changes in materials used or
construction to meet the standard.
These changes, such as the
incorporation of a flame resistant barrier
or other materials, will increase the
manufacture of fire resistant materials or
FR chemicals. This could mean
increased exposure to such chemicals
for workers and consumers.
Additionally, at the end of their useful
lives, the mattresses/sets will be
disposed of. Potential environmental
impacts will vary depending on the
method the manufacturer used to meet
the standard and the potential for the
particular FR chemicals used to persist
in the environment. [7]
FR chemicals widely in use, but new
applications possible. Many FR
chemicals are widely used. In the U.S.,
the consumption of flame retardant
chemicals is estimated to be over 1
billion pounds annually and is
increasing. This includes various fire
retardant chemicals based on bromine,
antimony, chlorine, phosphorous,
nitrogen, and boron. Additionally, there
are some fibers where the FR chemical
is incorporated into the polymer of the
fiber itself or that are inherently fire
resistant. These include some
modacrylic, melamine, and para-aramid
fibers.
Because the chemicals and materials
that would be used to meet a mattress
standard are already being used in other
applications, the manufacture of these
materials will not create new impacts,
though it could intensify effects that are
already occurring. A mattress
flammability standard could result in
some FR chemicals or flame resistant
materials being used in applications
where they have not been used before.
This would result in some new
exposure patterns for these materials.
For example, workers in mattress
factories could be exposed to the
chemicals as could the ultimate
consumers. However, these new
exposure patterns may be similar to
ones that are already occurring since
these chemicals are widely used in
other applications. For example,
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workers involved in manufacturing
protective apparel, carpets, and
transportation upholstery may already
be exposed to these chemicals as are the
consumers of the products. Some of
these FR chemicals and materials may
already be used in mattress and bedding
applications. For example, boric acid is
already used to treat cotton batting in
mattresses and futons. [6&7]
Possible regulatory protections. Some
chemicals that have been used for their
fire resistant properties have been
determined to have unacceptable
adverse impacts on health and the
environment in some applications (e.g.,
TRIS (2,3,-dibromopropyl) phosphate,
pentabromodiphenyl oxide (‘‘PBDPO’’)
and octabromodiphenyl oxide
(‘‘BDPO’’)). [7]
The U.S. Environmental Protection
Agency (EPA) has the authority to
regulate the use of toxic chemicals
under the Toxic Substances Control Act
(TSCA) (15 U.S.C. 2601 et seq.). EPA
also monitors and promotes research
into potential toxic or environmental
effects of chemicals which it believes
could pose environmental risks. With
regard to flame retardants, the EPA is
developing a significant new use rule
(SNUR), under section 5(a)(2) of TSCA,
which is expected to cover the use of
several flame retardants in residential
upholstered furniture. A SNUR would
require chemical manufacturers and
importers to report scientific data to the
EPA so that EPA may determine
whether controls on the use of the
chemical may be warranted. There is
expected to be some overlap between
the flame retardants that will be covered
by the SNUR for use in upholstered
furniture and flame retardants that can
be used in mattresses.
Decabromodiphenyl oxide (DBDPO), for
example, can be used as a backcoating
in upholstery fabric or on fire resistant
barriers for mattresses. Additional
activities by EPA, The National
Toxicology Program (NTP) of the
Department of Health and Human
Services (DHHS), and the Occupational
Safety and Health Administration
(OSHA) can provide information about
any adverse health effects of FR
chemicals and take actions to limit their
use if necessary. [6&7] Work by the
National Research Council of the
National Academy of Sciences on
selected flame-retardant chemicals is an
additional source of information on
these FR chemicals. [16]
Conclusion. The staff’s environmental
analysis examines some of the methods
manufacturers might use to meet the
proposed standard and discusses what
is known about their potential toxicity
and possible environmental impact. The
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analysis concludes that there are FR
chemicals and flame resistant materials
that, based on currently available data,
are not expected to pose unacceptable
risks to the environment and that are
widely used in other applications. [7]
In accordance with the National
Environmental Policy Act (‘‘NEPA’’),
the Executive Director of CPSC has
issued a Finding of No Significant
Impact (‘‘FONSI’’) for the proposed
mattress standard. The FONSI is based
on the staff’s Environmental
Assessment, which has been
summarized above. The FONSI
concludes that there will be no
significant impacts on the quality of the
human environment as a result of the
proposed mattress flammability
standard. The Commission requests
comments on both the Environmental
Assessment and the FONSI.11
O. Executive Order 12988
According to Executive Order 12988
(February 5, 1996), agencies must state
the preemptive effect, if any, of new
regulations.
The FFA provides that, generally, if
the Commission issues a flammability
standard for a fabric, related material or
product under the FFA, ‘‘no State or
political subdivision of a State may
establish or continue in effect a
flammability standard or other
regulation for such fabric, related
material or product if the standard or
other regulation is designed to protect
against the same risk of the occurrence
of fire with respect to which the
standard or other regulation under this
Act is in effect unless the State or
political subdivision standard or other
regulation is identical to the Federal
standard other regulation.’’ 15 U.S.C.
1203(a). Upon application to the
Commission, a State or political
subdivision of a State may be exempted
from this preemptive effect if
compliance with the State or political
subdivision requirement would not
cause the fabric, related material or
product to be in violation of any FFA
standard or regulation, and the State or
political subdivision’s standard (1)
provides a significantly higher degree of
protection from the risk of occurrence of
fire than the FFA standard and (2) does
not unduly burden interstate commerce.
Id. 1203(c)(1). In addition, the Federal
government, or a State or local
government, may establish and continue
in effect a non-identical flammability
standard or other regulation for the
11 Both of these documents are available from the
Commission’s Office of the Secretary (see
‘‘Addresses’’ section above) or from the
Commission’s web site (https://www.cpsc.gov/
library/foia/foia.html).
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Federal, State or local government’s
own use if it provides a higher degree
of protection than the FFA standard. Id.
1203(b). Thus, with the exceptions
noted above, the proposed open flame
standard for mattresses would preempt
non-identical state or local mattress
flammability standards designed to
protect against the same risk of the
occurrence of fire.
The issue of preemption has been
raised with regard to the proposed
standard because of California’s TB 603.
In a letter to the Bureau Chief of
California’s Bureau of Home
Furnishings and Thermal Insulation,
dated April 9, 2003, the Commission’s
General Counsel has taken the position
that CPSC’s existing federal Standard for
the Flammability of Mattresses (16 CFR
1632) preempts California’s TB 603.
That conclusion was based on
legislative history and CPSC’s General
Counsel Advisory Opinion 289 (Dec. 8,
1983) indicating that if federal and state
requirements are both designed to
address the same risk (i.e., the
occurrence of fire), the federal standard
will have preemptive effect even if the
two standards use different ignition
sources.
Legislative history of the FFA’s
preemption provision states:
[A] State standard designed to protect
against the risk of injury from a fabric
catching on fire would be preempted by a
Federal flammability standard covering the
same fabric even though the Federal
flammability standard called for tests using
matches and the State standard called for
tests using cigarettes. When an item is
covered by a Federal flammability standard,
* * * a different State or local flammability
requirement applicable to the same item will
be preempted since both are designed to
protect against the same risk, that is the
occurrence of or injury from fire.
H.R. Rep. No. 1022, 94th Cong., 2d Sess.
29 (1976). The Commission believes that
this legislative history indicates that the
proposed standard would preempt nonidentical state requirements addressing
the flammability of mattresses.
P. Effective Date
The Commission proposes that the
rule would become effective one year
from publication of a final rule in the
Federal Register and would apply to
mattresses entering the chain of
distribution on or after that date. The
Commission is aware that many
mattress manufacturers are modifying
their products to comply with
California’s TB 603 which prescribes
requirements that are similar to this
proposed rule and will become effective
January 1, 2005. Thus, the Commission
believes that a one-year effective date
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should allow sufficient time for
manufacturers to develop products for
nationwide markets that will meet the
proposed requirements. The
Commission requests comments,
especially from small businesses on the
proposed effective date and the impact
it would have on them.
Q. Proposed Findings
Section 1193(a) and (j)(2) of the FFA
require the Commission to make certain
findings when it issues a flammability
standard. The Commission must find
that the standard: (1) Is needed to
adequately protect the public against the
risk of the occurrence of fire leading to
death, injury or significant property
damage; (2) is reasonable,
technologically practicable, and
appropriate; (3) is limited to fabrics,
related materials or products which
present unreasonable risks; and (4) is
stated in objective terms. Id. 1193(b). In
addition, the Commission must find
that: (1) If an applicable voluntary
standard has been adopted and
implemented, that compliance with the
voluntary standard is not likely to
adequately reduce the risk of injury, or
compliance with the voluntary standard
is not likely to be substantial; (2) that
benefits expected from the regulation
bear a reasonable relationship to its
costs; and (3) that the regulation
imposes the least burdensome
requirement that would prevent or
adequately reduce the risk of injury. The
last three findings must be included in
the regulation. Id. 1193(j)(2). These
findings are discussed below.
The standard is needed to adequately
protect the public against unreasonable
risk of the occurrence of fire. National
fire loss estimates indicate that
mattresses and bedding were the first
items to ignite in 19,400 residential fires
attended by the fire service annually
during 1995–1999. These fires resulted
in 440 deaths, 2,230 injuries and $273.9
million in property loss each year. Of
these, the staff considers an estimated
18,500 fires, 440 deaths, 2,160 injuries,
and $259.5 million property loss
annually to be addressable by the
proposed standard. The Commission
estimates that the standard will prevent
80 to 86 percent of deaths and 86 to 92
percent of the injuries occurring with
these addressable mattress/bedding
fires. Thus, the Commission estimates
that when all mattresses have been
replaced by ones that comply with the
standard, 310 to 330 deaths and 1,660
to 1,780 injuries will be avoided
annually as a result of the standard.
The regulatory analysis explains that
the Commission estimates lifetime net
benefits of $18 to $62 per mattress or
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aggregate lifetime net benefits for all
mattresses produced in the first year of
the standard of $450 to $1,560 million
from the standard. Thus, the
Commission preliminarily finds that the
standard is needed to adequately protect
the public from the unreasonable risk of
the occurrence of fire.
The standard is reasonable,
technologically practicable, and
appropriate. Through extensive research
and testing, NIST developed a test
method to assess the flammability of
mattresses ignited by an open flame.
The test method represents the typical
scenario of burning bedclothes igniting
a mattress. Based on NIST’s testing, the
standard establishes criteria that will
reduce the fire intensity of a burning
mattress, allowing more time for
occupants to escape before flashover
occurs. NIST testing has also
demonstrated that mattresses can be
constructed with available materials and
construction that will meet the test
criteria. Therefore, the Commission
finds that the standard is reasonable,
technologically practicable, and
appropriate.
The standard is limited to fabrics,
related materials, and products that
present an unreasonable risk. The
standard applies to mattresses and
mattress and foundation sets. It is a
performance standard. Thus, it neither
requires nor restricts the use of
particular fabrics, related materials or
products. Manufacturers may choose the
materials and methods of construction
that they believe will best suit their
business and result in mattresses that
can meet the specified test criteria. As
discussed above, the Commission
concludes that current mattresses
present an unreasonable risk. Therefore,
the Commission finds that the standard
is limited to fabrics, related materials,
and products that present an
unreasonable risk.
Voluntary standards. The
Commission is not aware of any
voluntary standard in existence that
adequately and appropriately addresses
the specific risk of injury addressed by
this standard. Thus, no findings
concerning compliance with and
adequacy of voluntary standards are
necessary.
Relationship of Benefits to Costs. The
Commission estimates that the total
lifetime benefits of a mattress complying
with this standard will range from $62
to $74 per mattress (based on a 10 year
mattress life and 3% discount rate). The
Commission estimates that total
resource costs of the standard will range
from $13 to $44 per mattress. This
yields net benefits of $18 to $62 per
mattress. The Commission estimates
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that aggregate lifetime benefits
associated with all mattresses produced
the first year the standard becomes
effective range from $1,560 to $1,880
million, and that aggregate resource
costs associated with these mattresses
range from $320 to $1,110 million,
yielding net benefits of about $450 to
$1,560 million. Therefore, the
Commission finds that the benefits from
the regulation bear a reasonable
relationship to its costs.
Least burdensome requirement. The
Commission considered the following
alternatives: alternative maximum peak
heat release rate and test duration,
alternative total heat released in the first
10 minutes of the test, mandatory
production testing, a longer effective
date, taking no action, relying on a
voluntary standard, and requiring
labeling alone. As discussed in the
preamble above and the regulatory
analysis, these alternatives are expected
to increase costs without increasing
benefits, or significantly reduce the
benefits expected from the rule.
Therefore, the Commission finds that
the standard imposes the least
burdensome requirement that would
adequately reduce the risk.
R. Conclusion
For the reasons stated in this
preamble, the Commission preliminarily
finds that an open flame flammability
standard for mattresses and mattress
and foundation sets is needed to
adequately protect the public against the
unreasonable risk of the occurrence of
fire leading to death, injury, and
significant property damage. The
Commission also preliminarily finds
that the standard is reasonable,
technologically practicable, and
appropriate. The Commission further
finds that the standard is limited to the
fabrics, related materials and products
which present such unreasonable risks.
List of Subjects in 16 CFR Part 1633
PART 1633—STANDARD FOR THE
FLAMMABILITY (OPEN-FLAME) OF
MATTRESSES and MATTRESS AND
FOUNDATION SETS
Subpart A—The Standard
Sec.
1633.1 Purpose, scope and applicability.
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Subpart B—Rules and Regulations
1633.10 Definitions.
1633.11 Records.
1633.12 Labeling.
1633.13 Tests for guaranty purposes,
compliance with this section, and ‘‘one
of a kind’’ exemption.
Subpart C—Interpretations and Policies
1633.14 Policy clarification on renovation
of mattresses.
Figure 1 to Part 1633—Test Assembly,
Shown in Furniture Calorimeter
(Configuration A)
Figure 2 to Part 1633—Test Arrangement in
3.05m × 3.66m (10 ft × 12 ft) Room
(Configuration B)
Figure 3 to Part 1633—Details of Horizontal
Burner Head
Figure 4 to Part 1633—Details of Vertical
Burner Head
Figure 5 to Part 1633—Details of Burner
Stand-off
Figure 6 to Part 1633—Burner Assembly
Showing Arms and Pivots (Shoulder
Screws), in Relation to, Portable Frame
Allowing Burner Height Adjustment
Figure 7 to Part 1633—Elements of Propane
Flow Control for Each Burner
Figure 8 to Part 1633—Jig for Setting
Mattresses and Foundation Sides in
Same Plane
Figure 9 to Part 1633—Burner Placements on
Mattress/Foundation
Figure 10 to Part 1633—Jig for Setting
Burners at Proper Distances from
Mattress/Foundation
Figure 11 to Part 1633—Diagrams for
Glossary of Terms
Appendix A to Part 1633—Calibration of
Propane Flowmeters
Appendix B to Part 1633—Burner Operation
Sequence
Authority: 15 U.S.C. 1193, 1194.
Subpart A—The Standard
Consumer protection, Flammable
materials, Labeling, Mattresses and
mattress pads, Records, Textiles,
Warranties.
For the reasons stated in the
preamble, the Commission proposes to
amend Title 16 of the Code of Federal
Regulations by adding a new part 1633
to read as follows:
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1633.2 Definitions.
1633.3 General requirements.
1633.4 Prototype testing requirements.
1633.5 Prototype pooling and confirmation
testing requirements.
1633.6 Quality assurance requirements.
1633.7 Mattress test procedure.
1633.8 Findings.
1633.9 Glossary of terms.
§ 1633.1
Purpose, scope, and applicability.
(a) Purpose. This Part 1633 establishes
flammability requirements that all
mattress and mattress and foundation
sets must meet before sale or
introduction into commerce. The
purpose of the standard is to reduce
deaths and injuries associated with
mattress fires by limiting the size of the
fire generated by a mattress or mattress
and foundation set during a thirty
minute test.
(b) Scope. (1) All mattresses and all
mattress and foundation sets, as defined
in § 1633.2(a) and § 1633.2(b), of any
size, manufactured or imported after
[the effective date of this standard] are
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subject to the requirements of the
standard.
(2) One-of-a-kind mattresses and
foundations may be exempted from
testing under this standard in
accordance with § 1633.13(c).
(c) Applicability. The requirements of
this part 1633 shall apply to each
‘‘manufacturer’’ (as that term is defined
in § 1633.2(i)) of mattresses and/or
mattress and foundation sets which are
manufactured for sale in commerce.
§ 1633.2
Definitions.
In addition to the definitions given in
section 2 of the Flammable Fabrics Act
as amended (15 U.S.C. 1191), the
following definitions apply for purposes
of this part 1633.
(a) Mattress means a resilient material
or combination of materials enclosed by
a ticking (used alone or in combination
with other products) intended or
promoted for sleeping upon.
(1) This term includes, but is not
limited to, adult mattresses, youth
mattresses, crib mattresses (including
portable crib mattresses), bunk bed
mattresses, futons, flip chairs without a
permanent back or arms, sleeper chairs,
and water beds or air mattresses if they
contain upholstery material between the
ticking and the mattress core. Mattresses
used in or as part of upholstered
furniture are also included; examples
are convertible sofa bed mattresses,
corner group mattresses, day bed
mattresses, roll-away bed mattresses,
high risers, and trundle bed mattresses.
See § 1633.9 Glossary of terms, for
definitions of these items.
(2) This term excludes mattress pads,
mattress toppers (items with resilient
filling, with or without ticking, intended
to be used with or on top of a mattress),
sleeping bags, pillows, liquid and
gaseous filled tickings, such as water
beds and air mattresses that contain no
upholstery material between the ticking
and the mattress core, upholstered
furniture which does not contain a
mattress, and juvenile product pads
such as car bed pads, carriage pads,
basket pads, infant carrier and lounge
pads, dressing table pads, stroller pads,
crib bumpers, and playpen pads. See
§ 1633.9 Glossary of terms, for
definitions of these items.
(b) Foundation means a ticking
covered structure used to support a
mattress or sleep surface. The structure
may include constructed frames, foam,
box springs, or other materials, used
alone or in combination.
(c) Ticking means the outermost layer
of fabric or related material of a mattress
or foundation. It does not include any
other layers of fabric or related materials
quilted together with, or otherwise
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attached to, the outermost layer of fabric
or related material.
(d) Upholstery material means all
material, either loose or attached,
between the mattress ticking and the
core of a mattress, if a core is present.
(e) Edge seam means the seam or
border edge of a mattress or foundation
that joins the top and/or bottom with
the side panels.
(f) Tape edge means an edge seam
made by using binding tape to encase
and finish raw edges.
(g) Binding tape means a fabric strip
used in the construction of some edge
seams.
(h) Seam thread means the thread
used to form stitches in construction
features, seams, and tape edges.
(i) Manufacturer means an individual
plant or factory at which mattresses
and/or mattress and foundation sets are
manufactured or assembled. For
purposes of this Part 1633, an importer
is considered a manufacturer.
(j) Prototype means a specific design
of mattress and corresponding
foundation, if any, which, except as
permitted by § 1633.4(b), is the same in
all material respects as, and serves as a
model for, production units intended to
be introduced into commerce.
(k) Prototype pooling means a
cooperative arrangement whereby one
or more manufacturers may rely on a
prototype produced by a different
manufacturer.
(l) Production lot means any quantity
of finished mattresses or mattress and
foundation sets that are produced in a
production interval defined by the
manufacturer, and are intended to
replicate a specific prototype that
complies with this part 1633.
(m) Confirmation test means a premarket test conducted by a
manufacturer that is relying on a pooled
prototype produced by another
manufacturer. A confirmation test must
be conducted in accordance with the
procedures set forth in § 1633.7 to
confirm that the manufacturer can
produce a mattress and corresponding
foundation, if any, that is identical to
the prototype in all material respects.
(n) Specimen means a mattress and
corresponding foundation, if any, tested
under this part.
(o) Twin size means any mattress with
the dimensions 38 inches (in) (96.5
centimeters (cm)) x 74.5 in. (189.2 cm),
all dimensions may vary by ± 1⁄2 in. (±
1.3 cm)
(p) Qualified prototype means a
prototype that has been tested in
accordance with § 1633.4(a) and meets
the criteria stated in § 1633.3(b).
(q) Core means the main support
system that may be present in a
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mattress, such as springs, foam, water
bladder, air bladder, or resilient filling.
§ 1633.3
General requirements.
(a) Summary of test method. The test
method set forth in § 1633.7 measures
the flammability (fire test response
characteristics) of a mattress specimen
by exposing the specimen to a specified
flaming ignition source and allowing it
to burn freely under well-ventilated,
controlled environmental conditions.
The flaming ignition source shall be a
pair of propane burners. These burners
impose differing fluxes for differing
times on the top and sides of the
specimen. During and after this
exposure, measurements shall be made
of the time-dependent heat release rate
from the specimen, quantifying the
energy generated by the fire. The rate of
heat release must be measured by means
of oxygen consumption calorimetry.
(b) Test criteria. When testing the
mattress or mattress and foundation set
in accordance with the test procedure
set forth in § 1633.7, the specimen shall
comply with both of the following
criteria:
(1) The peak rate of heat release shall
not exceed 200 kilowatts (‘‘kW’’) at any
time within the 30 minute test; and
(2) The total heat release shall not
exceed 15 megajoules (‘‘MJ’’) for the first
10 minutes of the test. In the interest of
safety, the test operator should
discontinue the test and record a failure
if a fire develops to such a size as to
require suppression for the safety of the
facility.
(c) Testing of mattress and
corresponding foundation. Mattresses to
be offered for sale with a foundation
shall be tested with that foundation.
Mattresses to be offered for sale without
a foundation shall be tested alone.
(d) Compliance with this standard.
Each mattress or mattress and
foundation set sold or introduced into
commerce after [the effective date of this
standard] shall meet the test criteria
specified in paragraph (b) of this section
and otherwise comply with all
applicable requirements of this part
1633.
§ 1633.4
Prototype testing requirements.
(a) Except as otherwise provided in
paragraph (b) of this section, each
manufacturer shall cause three
specimens of each prototype to be tested
according to § 1633.7 and obtain passing
test results according to § 1633.3(b)
before selling or introducing into
commerce any mattress or mattress and
foundation set based on that prototype,
unless the manufacturer complies with
the prototype pooling and confirmation
testing requirements in § 1633.5.
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(b) Notwithstanding the requirements
of paragraph (a) of this section, a
manufacturer may sell or introduce into
commerce a mattress or mattress and
foundation set based on a prototype that
has not been tested according to
§ 1633.3(b) if that prototype differs from
a qualified prototype only with respect
to:
(1) Mattress/foundation size (e.g.,
twin, queen, king);
(2) Ticking, unless the ticking of the
qualified prototype has characteristics
(such as chemical treatment or special
fiber composition) designed to improve
performance on the test prescribed in
this part; and/or
(3) The manufacturer can
demonstrate, on an objectively
reasonable basis, that a change in any
component, material, or method of
construction will not cause the
prototype to exceed the test criteria
specified in § 1633.3(b).
(c) All tests must be conducted on
specimens that are no smaller than a
twin size, unless the largest size
mattress or mattress and foundation set
produced is smaller than a twin size, in
which case the largest size must be
tested.
(d)(1) If each of the three specimens
meets both the criteria specified in
§ 1633.3(b), the prototype shall be
qualified. If any one (1) specimen fails
to meet the test criteria of § 1633.3(b),
the prototype is not qualified.
(2) Any manufacturer may produce
mattresses and foundations, if any, for
sale in reliance on prototype tests
performed before [the effective date of
this Standard], provided that such tests
were conducted in accordance with all
requirements of this section and
§ 1633.7 and yielded passing results
according to the test criteria of
§ 1633.3(b).
§ 1633.5 Prototype pooling and
confirmation testing requirements.
(a) Prototype pooling. One or more
manufacturers may rely on a prototype
produced by another manufacturer
provided that:
(1) The prototype meets the
requirements of § 1633.4; and
(2) The mattresses or mattress and
foundation sets being produced based
on the prototype have components,
materials, and methods of construction
that are identical in all material respects
to the prototype except as otherwise
permitted by § 1633.4(b).
(b) Confirmation testing. Any
manufacturer (‘‘Manufacturer B’’)
producing mattresses or mattress and
foundation sets in reliance on a
prototype produced by another
manufacturer (‘‘Manufacturer A’’) shall
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cause to be tested in accordance with
§ 1633.7 at least one (1) specimen
produced by Manufacturer B of each
prototype of Manufacturer A upon
which said Manufacturer B is relying.
The tested specimen must meet the
criteria under § 1633.3(b) before
Manufacturer B may sell or introduce
any mattresses or mattress and
foundation sets based on the pooled
prototype.
(c) Confirmation test failure. (1) If the
confirmation test specimen fails to meet
the criteria of § 1633.3(b), the
manufacturer thereof shall not sell any
mattress or mattress and foundation set
based on the same prototype until that
manufacturer takes corrective measures,
tests a new specimen, and the new
specimen meets the criteria of
§ 1633.3(b).
(2) If a confirmation test specimen
fails to meet the criteria of § 1633.3(b),
the manufacturer thereof must notify the
manufacturer of the prototype of the test
failure.
§ 1633.6
Quality assurance requirements.
(a) Quality assurance. Each
manufacturer shall implement a quality
assurance program to ensure that
mattresses and mattress and foundation
sets manufactured for sale are identical
in all material respects to the prototype
on which they are based. At a minimum
these procedures shall include:
(1) Controls, including incoming
inspection procedures, of all mattress
and mattress and foundation set
components and materials to ensure that
they are identical in all material
respects to those used in the prototype;
(2) Designation of a production lot
that is represented by the prototype; and
(3) Inspection of mattresses and
mattress and foundation sets produced
for sale sufficient to demonstrate that
they are identical to the prototype in all
material respects.
(b) Production testing. Manufacturers
are encouraged to conduct, as part of the
quality assurance program, random
testing of mattresses and mattress and
foundation sets being produced for sale
according to the requirements of
§§ 1633.3 and 1633.7.
(c) Failure of mattresses produced for
sale to meet flammability standard. (1)
Sale of mattresses and foundations. If
any test performed for quality assurance
yields results which indicate that any
mattress or mattress and foundation set
of a production lot does not meet the
criteria of § 1633.3(b), or if a
manufacturer obtains test results or
other evidence that a component or
material or construction/assembly
process used could negatively affect the
test performance of the mattress as set
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forth in § 1633.3(b), the manufacturer
shall cease production and distribution
in commerce of such mattresses and/or
mattress and foundation sets until
corrective action is taken.
(2) Corrective actions. A manufacturer
must take corrective action when any
mattress or mattress and foundation set
is manufactured or imported for sale
fails to meet the flammability test
criteria set forth in § 1633.3(b).
§ 1633.7
Mattress test procedure.
(a) Apparatus and test materials (1)
Calorimetry. The rate of heat release
must be measured by means of oxygen
consumption calorimetry. The
calibration should follow generally
accepted practices for calibration. The
calorimetry system shall be calibrated at
a minimum of two (2) calibration points,
at 75 kW and 200 kW.
(2) Testroom. The testroom must have
either Test Configuration A or B.
(i) Test Configuration A. (an open
calorimeter (or furniture calorimeter)).
In this configuration, the specimen to be
tested is placed under the center of an
open furniture calorimeter. Figure 1 of
this part shows the test assembly atop
a bedframe and catch surface. The
specimen shall be placed under an open
hood which captures the entire smoke
plume and is instrumented for heat
release rate measurements. The area
surrounding the test specimen in an
open calorimeter layout shall be
sufficiently large that there are no heat
re-radiation effects from any nearby
materials or objects. The air flow to the
test specimen should be symmetrical
from all sides. The air flow to the
calorimeter hood shall be sufficient to
ensure that the entire fire plume is
captured, even at peak burning. Skirts
may be placed on the hood periphery to
help assure this plume capture, if
necessary, though they must not be of
such an excessive length as to cause the
incoming flow to disturb the burning
process. Skirts must also not heat up to
the point that they contribute significant
re-radiation to the test specimen. The air
supply to the hood shall be sufficient
that the fire is not in any way limited
or affected by the available air supply.
The fire plume should not enter the
hood exhaust duct. Brief (seconds)
flickers of flame that occupy only a
minor fraction of the hood exhaust duct
inlet cross-section are not a problem
since they do not signify appreciable
suppression of flames.
(ii) Test Configuration B. The test
room shall have dimensions 3.05 meters
(m) ± 25 millimeters (mm) by 3.66 m ±
25 mm by 2.44 m ± 25 mm (10 feet (ft)
by 12 ft by 8 ft) high. The specimen is
placed within the burn room. All smoke
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exiting from the room is caught by a
hood system instrumented for heat
release rate measurements. The room
shall have no openings permitting air
infiltration other than a doorway
opening 0.97 m ± 6.4 mm by 2.03 m ±
6.4 mm (38 in by 80 in) located as
indicated in Figure 2 of this part and
other small openings as necessary to
make measurements. Construct the test
room of wood or metal studs and line
it with fire-rated wallboard or calcium
silicate board. Position an exhaust hood
outside of the doorway so as to collect
all of the combustion gases. There shall
be no obstructions in the air supply to
the set-up.
(2) Location of test specimen. The
location of the test specimen is shown
in Figure 2 of this part. The angled
placement is intended to minimize the
interaction of flames on the side
surfaces of the test specimen with the
room walls. One corner of the test
specimen shall be 13 centimeters (cm)
to 17 cm from the wall and the other
corner shall be 25 cm to 30 cm from the
wall. The test room shall contain no
other furnishings or combustible
materials except for the test specimen.
(3) Bed frame. For twin size
mattresses, the specimen shall be placed
on top of a welded bed frame (1.90 m
by 0.99 m by 115 mm high; 75 in by 39
in by 4.5 in high) made from 38 mm (1.5
in) steel angle. The frame shall be
completely open under the foundation
except for two crosspieces, 25 mm wide
(1 in) at the 1⁄3 length points. If testing
a size other than twin, the relationship
of the mattress to the frame shall be
comparable to that specified in this
paragraph.
(4) Catch pan. The bed frame feet
shall rest on a surface of either calcium
silicate board or fiber cement board, 13
mm (0.5 in) thick, 2.11 m by 1.19 m (83
in by 47 in). The board serves as a catch
surface for any flaming melt/drip
material falling from the bed assembly
and may be the location of a pool fire
that consumes such materials. This
surface must be cleaned between tests to
avoid build-up of combustible residues.
Lining this surface with aluminum foil
to facilitate cleaning is not
recommended since this might increase
fire intensity via reflected radiation.
(5) Ignition source. (i) General. The
ignition source shall consist of two Tshaped burners as shown in Figures 3
and 4 of this part. One burner impinges
flames on the top surface of the
mattress. The second burner impinges
flames on the side of the mattress and
on the side of the foundation. Each of
the burners shall be constructed from
stainless steel tubing (12.7 mm diameter
with 0.89 ± 0.5 mm wall thickness; 0.50
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in diameter with 0.035 ± 0.002 in wall).
Each burner shall incorporate a standoff foot to set its distance from the test
specimen surface (Figure 5 of this part).
Both burners shall be mounted with a
mechanical pivot point but the side
burner is locked in place to prevent
movement about this pivot in normal
usage. The top burner, however, is free
to rotate about its pivot during a burner
exposure and is lightly weighted so as
to exert a downward force on the
mattress top through its stand-off foot so
that the burner follows a receding top
surface on the test specimen (Figure 6
of this part). The combination of burner
stand-off distance and propane gas flow
rate to the burners determines the heat
flux they impose on the surface of the
test specimen so that both of these
parameters are tightly controlled.
(ii) Top surface burner. The T head of
the top surface burner (horizontal
burner, Figure 3 of this part) shall be
305 ± 2 mm (12 ± 0.08 in) long with gas
tight plugs in each end. Each side of the
T shall contain 17 holes equally spaced
over a 135 mm length (8.5 mm ± 0.1 mm
apart; 0.333 ± 0.005 in). The holes on
each side shall begin 8.5 mm (0.33 in)
from the centerline of the burner head.
The holes shall be drilled with a #56
drill and are to be 1.17 mm to 1.22 mm
(0.046 in to 0.048 in) in diameter. The
holes shall be pointed 5° out of the
plane of the Figure. This broadens the
width of the heat flux profile imposed
on the surface of the test specimen.
(iii) Side surface burner. The T head
of the side surface burner (vertical
burner) shall be constructed similarly to
the top surface burner, as shown in
Figure 4 of this part, except that its
overall length shall be 254 ± 2 mm (10
± 0.08 in). Each side of the burner head
shall contain 14 holes spaced evenly
over a 110 mm length (8.5 mm ± 0.1 mm
apart; 0.333 ± 0.005 in). The holes shall
be drilled with a #56 drill and are to be
1.17 mm to 1.22 mm (0.046 in to 0.048
in) in diameter. The holes shall be
pointed 5° out of the plane of the Figure.
(iv) Burner stand-off. The burner
stand-off on each burner shall consist of
a collar fixed by a set screw onto the
inlet tube of the burner head (Figure 5
of this part). The collar shall hold a 3
mm diameter stainless steel rod having
a 12.7 mm by 51 mm by (2–2.5 mm)
thick (0.5 in by 2 in by (0.08–0.10) in
thick) stainless steel pad welded on its
end with its face (and long axis) parallel
to the T head of the burner. The foot pad
shall be displaced about 10 mm to 12
mm from the longitudinal centerline of
the burner head so that it does not rest
on the test specimen in an area of peak
heat flux. A short section (9.5 mm outer
diameter (‘‘OD’’), about 80 mm long; 3⁄8
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in OD, about 3.2 in long) of copper
tubing shall be placed in the inlet gas
line just before the burner to facilitate
making the burner nominally parallel to
the test specimen surface (by a
procedure described in this paragraph).
The copper tube on the top surface
burner must be protected from excessive
heat and surface oxidation by wrapping
it with a suitable layer of high
temperature insulation. Both copper
tubes are to be bent by hand in the
burner alignment process. They must be
replaced if they become work-hardened
or crimped in any way. The gas inlet
lines (12.7 mm OD stainless steel
tubing; 0.50 in) serve as arms leading
back to the pivot points and beyond, as
shown in Figure 6 of this part. The
length to the pivot for the top burner
shall be approximately 1000 mm (40 in).
(v) Frame. Figure 6 shows the frame
that holds the burners and their pivots,
which are adjustable vertically in
height. All adjustments (burner height,
burner arm length from the pivot point,
counterweight positions along the
burner arm) are facilitated by the use of
knobs or thumbscrews as the set screws.
The three point footprint of the burner
frame, with the two forward points on
wheels, facilitates burner movement and
burner stability when stationary.
(vi) Arms. The metal arms attached to
the burners shall be attached to a
separate gas control console by flexible,
reinforced plastic tubing.1 The gas
control console is mounted separately
so as to facilitate its safe placement
outside of the test room throughout the
test procedure. The propane gas lines
running between the console and the
burner assembly must be anchored on
the assembly before running to the
burner inlet arms. A 1.5 m ± 25 mm (58
in ± 1 in) length of flexible, reinforced
tubing between the anchor point and the
end of each burner inlet allows free
movement of the top burner about its
pivot point. The top burner arm shall
have a pair of moveable cylindrical
counterweights that are used, as
described below, to adjust the
downward force on the stand-off foot.
(vii) Burner head. Each burner head
shall have a separate pilot light
consisting of a 3 mm OD (1⁄8in OD)
copper tube with an independentlycontrolled supply of propane gas. The
tube terminates within 10 mm of the
center of the burner head. Care must be
taken to set the pilot flame size small
enough so as not to heat the test
specimen before the timed burner
exposure is begun.
1 Fiber-reinforced plastic tubing (6 mm ID by 9.5
mm OD; 1⁄4 inch ID by 3⁄4 inch OD) made of PVC
should be used.
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(viii) Flow control system. Each
burner shall have a flow control system
of the type shown in Figure 7 of this
part. Propane gas from a source such as
a bottle is reduced in pressure to
approximately 70 kilopascals (‘‘kPa’’)
(20 pounds per square inch gage
(‘‘psig’’)) and fed to the system shown
in Figure 8 of this part. The gas flow to
the burner is delivered in a square-wave
manner (constant flow with rapid onset
and termination) by means of the
solenoid valve upstream of the
flowmeter. An interval timer (accurate
to ± 0.2 s) determines the burner flame
duration. The pilot light assures that the
burner will ignite when the solenoid
valve opens 2. The gas flow shall be set
using a rotameter type of flowmeter,
with a 150 mm scale, calibrated for
propane. When calibrating the
flowmeter, take into account that the
flow resistance of the burner holes
causes a finite pressure increase in the
flowmeter above ambient. (If a
calibration at one atmosphere is
provided by the manufacturer, the
flowmeter reading, at the internal
pressure existing in the meter, required
to get the flow rates listed in this
paragraph must be corrected, typically
by the square root of the absolute
pressure ratio. This calls for measuring
the actual pressure in the flow meters
when set near the correct flow values.
A value roughly in the range of 1 kPa
to 3 kPa—5 in to 15 in of water—can be
expected.) Useful guidelines for
calibration are provided in Appendix A
of this part.
(ix) Gas flow rate. Use propane gas
with a known net heat of combustion of
46.5 ± 0.5 MJ/kg (nominally 99% to
100% propane). Each burner has a
specific propane gas flow rate set with
its respective, calibrated flowmeter. The
gas flow rate to the top burner is 12.9
liters per minute (‘‘L/min’’) ± 0.1 L/min
at a pressure of 101 ± 5 kPa (standard
atmospheric pressure) and a
temperature of 22 ± 3 °C. The gas flow
rate to the side burner is 6.6 ± 0.05 L/
min at a pressure of 101 ± 5 kPa
(standard atmospheric pressure) and a
temperature of 22 ± 3 °C. For the
flowmeters supplied with the burner
assembly, the black float setting for the
top burner is expected to be in the 85
mm to 95 mm range. For the side
burner, the expected range for the black
float is 115 m to 125 mm. The total heat
release rate of the burners is 27 kW.
2 If the side burner, or more commonly one half
of the side burner, fails to ignite quickly, adjust the
position of the igniter, bearing in mind that propane
is heavier than air. The best burner behavior test
assessment is done against an inert surface (to
spread the gas as it would during an actual test).
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(b) Conditioning. Remove the
specimens from any packaging prior to
conditioning. Specimens shall be
conditioned in air at a temperature
greater than 18 °C (65 °F) and a relative
humidity less than 55 percent for at
least 48 continuous hours prior to test.
Specimens shall be supported in a
manner to permit free movement of air
around them during conditioning.
(c) Test preparation. (1) General.
Horizontal air flow at a distance of 0.5
m (20 in) on all sides of the test
specimen at the mattress top height
shall be ≤ 0.5 m/s. If there is any visual
evidence that the burner flames are
being shifted around during their
exposure durations, the burner regions
must be enclosed on two or more sides
by at least a triple layer of screen wire.
The screen(s) for the top burner shall sit
on the mattress top but must be far
enough away (typically 30 cm or more)
so as not to interfere or interact with
flame spread during the burner
exposure. The screen for the side burner
will require a separate support from
below. All screens shall be removed at
the end of the 70 second exposure
interval.
(2) Specimen. Remove the test
specimen from the conditioning room
immediately before it is to be tested. Be
sure the bed frame is approximately
centered on the catch surface. Place the
specimen on the bed frame. Carefully
center them on the bed frame and on
each other. The mattress shall be
centered on top of the foundation (see
Figure 1 of this part). However, in order
to keep the heat flux exposure the same
for the sides of the two components, if
the mattress is 1 cm to 2 cm narrower
than the foundation, the mattress shall
be shifted so that the side to be exposed
is in the same plane as the foundations.
Refer to Figure 8 of this part. A product
having an intended sleep surface on
only one side shall be tested with the
sleeping side up so that the sleeping
surface is exposed to the propane
burner.
(d) Burner flow rate/flow timer
confirmation. Just prior to moving the
burner adjacent to the test specimen,
briefly ignite each burner at the same
time, and check that the propane flow
to that burner is set at the appropriate
level on its flowmeter to provide the
flows listed in paragraph (a)(5)(ix) of
this section. Check that the timers for
the burner exposures are set to 70
seconds for the top burner and 50
seconds for the side burner. For a new
burner assembly, check the accuracy of
the gas flow timers against a stop watch
at these standard time settings. Set pilot
flows to a level that will not cause them
to impinge on sample surfaces.
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(e) Location of the gas burners. Place
the burner heads so that they are within
300 mm (1 ft) of the mid-length of the
mattress. The general layout for the
room configuration is shown in Figure
2 of this part. For a quilted mattress top
the stand-off foot pad must alight on a
high, flat area between dimples or
quilting thread runs. The same is to be
true for the side burner if that surface is
quilted. If a specimen design presents a
conflict in placement such that both
burners cannot be placed between local
depressions in the surface, the top
burner shall be placed at the highest flat
surface.
(f) Burner set-up. The burners shall be
placed in relation to the mattress and
foundation surfaces in the manner
shown in Figure 9 of this part, i.e., at the
nominal spacings shown there and with
the burner tubes nominally parallel 3 to
the mattress surfaces on which they
impinge. Since the heat flux levels seen
by the test specimen surfaces depend on
burner spacing, as well as gas flow rate,
care must be taken with the set-up
process.
(g) Burner alignment procedure. (1)
Preparation. Complete the following
before starting the alignment procedure:
(i) Check that the pivot point for the
mattress top burner feed tube and the
two metal plates around it are clean and
well-lubricated so as to allow smooth,
free movement.
(ii) Set the two burners such that the
5° out-of-plane angling of the flame jets
makes the jets on the two burners point
slightly toward each other.
(iii) Check the burner stand-off feet for
straightness and perpendicularity
between foot pad and support rod and
to see that they are clean of residue from
a previous test.
(iv) Have at hand the following items
to assist in burner set-up: the jig, shown
in Figure 10 of this part, for setting the
stand-off feet at their proper distances
from the front of the burner tube; a 3
mm thick piece of flat stock (any
material) to assist in checking the
parallelness of the burners to the
mattress surfaces; and a 24 gage
stainless steel sheet metal platen that is
30 mm (12 in) wide, 610 mm (24 in)
long and has a sharp, precise 90° bend
355 mm (14 in) from one 30 mm wide
end.
(2) Alignment. (i) Place the burner
assembly adjacent to the test specimen.
Place the sheet metal platen on the
mattress with the shorter side on top.
3 The top burner will tend to be tangential to the
mattress surface at the burner mid-length; this
orientation will not necessarily be parallel to the
overall average mattress surface orientation nor will
it necessarily be horizontal. This is a result of the
shape of the mattress top surface.
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The location shall be within 30 cm (1
ft) of the longitudinal center of the
mattress. The intended location of the
stand-off foot of the top burner shall not
be in a dimple or crease caused by the
quilting of the mattress top. Press the
platen laterally inward from the edge of
the mattress so that its side makes
contact with either the top and bottom
tape edge or the vertical side of the
mattress.4 Use a 20 cm (8 in) strip of
duct tape (platen to mattress top) to
hold the platen firmly inward in this
position.
(ii) With both burner arms horizontal
(pinned in this position), fully retract
the stand-off feet of both burners and, if
necessary, the pilot tubes as well 5.
(Neither is to protrude past the front
face of the burner tubes at this point.)
Move the burner assembly forward
(perpendicular to the mattress) until the
vertical burner lightly contacts the sheet
metal platen. Adjust the height of the
vertical burner on its vertical support
column so as to center the tube on the
crevice between the mattress and the
foundation. (This holds also for pillow
top mattress tops, i.e., ignore the crevice
between the pillow top and the main
body of the mattress.) 6 Adjust the
height of the horizontal burner until it
sits lightly on top of the sheet metal
platen. Its burner arm should then be
horizontal.
(iii) Move the horizontal burner in/out
(loosen the thumb screw near the pivot
point) until the outer end of the burner
tube is 13 mm to 19 mm (1⁄2 in to 3⁄4 in)
from the corner bend in the platen (this
is facilitated by putting a pair of lines
on the top of the platen 13 mm and 19
mm from the bend and parallel to it).
Tighten the thumb screw.
(iv) Make the horizontal burner
parallel to the top of the platen (within
3 mm, 1⁄8 in over the burner tube length)
by bending the copper tube section
4 Mattresses having a convex side are treated
separately since the platen cannot be placed in the
above manner. Use the platen only to set the top
burner parallelness. Set the in/out distance of the
top burner to the specification in the paragraph
(g)(2)(iii). Set the side burner so that it is
approximately (visually) parallel to the flat side
surface of the foundation below the mattress/
foundation crevice once its foot is in contact with
the materials in the crevice area. The burner will
not be vertical in this case. If the foundation side
is also non-flat, set the side burner vertical (± 3 mm,
as above) using a bubble level as a reference. The
side surface convexities will then bring the bowed
out sections of the specimen closer to the burner
tube than the stand-off foot.
5 The pilot tubes can normally be left with their
ends just behind the plane of the front of the burner
tube. This way they will not interfere with
positioning of the tube but their flame will readily
ignite the burner tubes.
6 For tests of the mattress alone, set the side
burner mid-height equal to the lower tape edge of
the mattress.
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appropriately. Note: After the platen is
removed in paragraph (g)(2)(vii), the
burner tube may not be horizontal; this
is normal. For mattress/foundation
combinations having nominally flat,
vertical sides, the similar adjustment for
the vertical burner is intended to make
that burner parallel to the sides and
vertical. Variations in the shape of
mattresses and foundations can cause
the platen section on the side to be nonflat and/or non-vertical. If the platen is
flat and vertical, make the vertical
burner parallel to the side of the platen
(± 3 mm) by bending its copper tube
section as needed. If not, make the side
burner parallel to the mattress/
foundation sides by the best visual
estimate after the platen has been
removed.
(v) Move the burner assembly
perpendicularly back away from the
mattress about 30 cm (1 ft). Set the two
stand-off feet to their respective
distances using the jig designed for this
purpose. Install the jig fully onto the
burner tube (on the same side of the
tube as the stand-off foot), with its side
edges parallel to the burner feed arm, at
about the position where one end of the
foot will be. Loosen the set screw and
slide the foot out to the point where it
is flush with the bottom end of the jig.
Tighten the set screw. Make sure the
long axis of the foot is parallel to the
burner tube. It is essential to use the
correct side of the spacer jig with each
burner. Double check this. The jig must
be clearly marked.
(vi) Set the downward force of the
horizontal burner. Remove the retainer
pin near the pivot. While holding the
burner feed arm horizontal using a
spring scale 7 hooked onto the
thumbscrew holding the stand-off foot,
move the small and/or large weights on
the feed tube appropriately so that the
spring scale reads 170 g to 225 g (6 oz
to 8 oz).
(vii) Remove the sheet metal platen
(and tape holding it).
(viii) Hold the horizontal burner up
while sliding the burner assembly
forward until its stand-off foot just
touches the mattress and/or the
foundation 8, then release the horizontal
7 An acceptable spring scale has a calibrated
spring mounted within a holder and hooks on each
end.
8 The foot should depress the surface it first
contacts by no more than 1 mm to 2 mm. This is
best seen up close, not from the rear of the burner
assembly. However, if a protruding tape edge is the
first item contacted, compress it until the foot is in
the plane of the mattress/foundation vertical sides.
The intent here is that the burner be spaced a fixed
distance from the vertical mattress/foundation
sides, not from an incidental protrusion. Similarly,
if there is a wide crevice in this area which would
allow the foot to move inward and thereby place the
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burner. The outer end of the burner tube
should extend at least 6 mm to 12 mm
(1⁄4 in to 1⁄2 in) out beyond the
uppermost corner/edge of the mattress
so that the burner flames will hit the
tape edge. (For a pillow top mattress,
this means the outer edge of the pillow
top portion and the distance may then
be greater than 6 mm to 12 mm.) If this
is not the case, move the burner
assembly (perpendicular to the mattress
side)—not the horizontal burner alone—
until it is. Finally, move the vertical
burner tube until its stand-off foot just
touches the side of the mattress and/or
the foundation. (Use the set screw near
the vertical burner pivot.)
(ix) Make sure all thumbscrews are
adequately tightened. Care must be
taken, once this set-up is achieved, to
avoid bumping the burner assembly or
disturbing the flexible lines that bring
propane to it.
(x) If there is any indication of flow
disturbances in the test facility which
cause the burner flames or pilot flames
to move around, place screens around
the burners so as to minimize these
disturbances 9. These screens (and any
holders) must be far enough away from
the burners (about 30 cm or more for the
top, less for the side) so that they do not
interact with the flames growing on the
specimen surfaces. For the top surface
burner, at least a triple layer of window
screen approximately 30 cm high sitting
vertically on the mattress top (Figure 9
of this part) has proved satisfactory. For
the side burner at least a triple layer of
screen approximately 15 cm wide,
formed into a square-bottom U-shape
and held from below the burner has
proved satisfactory. Individual
laboratories will have to experiment
with the best arrangement for
suppressing flow disturbances in their
facility.
(xi) Proceed with the test (see Test
Procedure in paragraph (h) of this
section and Appendix B of this part).
(h) Running the test. (1) Charge the
hose line to be used for fire suppression
with water.
(2) Ignite the pilot lights on both
burners and make sure they are small
enough as to not heat the test specimen
surfaces significantly.
(3) With the calorimetry system fully
operational, after instrument zeroes and
burners too close to the vertical mattress/foundation
sides, it will be necessary to use the spacer jig
(rather than the stand-off foot) above or below this
crevice to set the proper burner spacing. Compress
the mattress/foundation surface 1 mm to 2 mm
when using the jig for this purpose.
9 The goal here is to keep the burner flames
impinging on a fixed area of the specimen surface
rather than wandering back and forth over a larger
area.
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spans, start the video lights and video
camera and data logging systems two
minutes before burner ignition (or, if not
using video, take a picture of the setup).
(4) Start the burner exposure by
activating power to the burner timers.
Also start a 30 minute timer of the test
duration. If not using video, one photo
must be taken within the first 45
seconds of starting the burners.
(5) When the burners go out (after 70
seconds for the longer exposure),
carefully lift the top burner tube away
from the specimen surface, producing as
little as possible disturbance to the
specimen. Remove the burner assembly
from the specimen area to facilitate the
video camera view of the full side of the
specimen. In the case of the room-based
configurations, remove the burner
assembly from the room to protect it.
Remove all screens.
(i) Video recording/photographs.
Place a video or still frame camera so as
to have (when the lens is zoomed out)
just slightly more than a full-length
view of the side of the test specimen
being ignited, including a view of the
flame impingement area while the
burner assembly is present. The view
must also include the catch pan so that
it is clear whether any melt pool fire in
this pan participates significantly in the
growth of fire on the test specimen. The
camera shall include a measure of
elapsed time to the nearest 1 second for
video and 1 minute for still frame
within its recorded field of view
(preferably built-in to the camera). For
the room-based configuration, the
required full-length view of the sample
may require an appropriately placed
window, sealed with heat resistant
glass, in one of the room walls. Place the
camera at a height just sufficient to give
a view of the top of the specimen while
remaining under any smoke layer that
may develop in the room. The specimen
shall be brightly lit so that the image
does not lose detail to over-exposed
flames. This will require a pair or more
of 1 kW photo flood lights illuminating
the viewed side of the specimen. The
lights may need to shine into the room
from the outside via sealed windows.
(j) Cessation of test. (1) The heat
release rate shall be recorded and video/
photographs taken until either 30
minutes has elapsed since the start of
the burner exposure or a fire develops
of such size as to require suppression
for the safety of the facility.
(2) Note the time and nature of any
unusual behavior that is not fully within
the view of the video camera. This is
most easily done by narration to a
camcorder.
(3) Run the heat release rate system
and datalogger until the fire has been
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fully out for several minutes to allow
the system zero to be recorded.
§ 1633.8
Findings.
(a) General. In order to issue a
flammability standard under the FFA,
the FFA requires the Commission to
make certain findings and to include
these in the regulation, 15 U.S.C.
1193(j)(2). These findings are discussed
in this section.
(b) Voluntary standards. No findings
concerning compliance with and
adequacy of a voluntary standard are
necessary because no relevant voluntary
standard addressing the risk of injury
that is addressed by this regulation has
been adopted and implemented.
(c) Relationship of benefits to costs.
The Commission estimates the potential
total lifetime benefits of a mattress that
complies with this standard to range
from $62 to $74 per mattress (based on
a 10 year mattress life and a 3%
discount rate). The Commission
estimates total resource costs of the
standard to range from $13 to $44 per
mattress. This yields net benefits of $18
to $62 per mattress. The Commission
estimates that aggregate lifetime benefits
associated with all mattresses produced
the first year the standard becomes
effective range from $1,560 to $1,880
million, and that aggregate resource
costs associated with these mattresses
range from $320 to $1,110 million,
yielding net benefits of about $450 to
$1,560 million. Accordingly, the
Commission finds that the benefits from
the regulation bear a reasonable
relationship to its costs.
(d) Least burdensome requirement.
The Commission considered the
following alternatives: Alternative
maximum peak heat release rate and test
duration, alternative total heat released
in the first 10 minutes of the test,
mandatory production testing, a longer
effective date, taking no action, relying
on a voluntary standard, and requiring
labeling alone (without any performance
requirements). The alternatives of taking
no action, relying on a voluntary
standard (if one existed) requiring
labeling alone are unlikely to adequately
reduce the risk. Requiring a criterion of
25 MJ total heat release during the first
10 minutes of the test instead of 15 MJ
would likely reduce the estimated
benefits (deaths and injuries reduced)
without having much effect on costs.
Both options of increasing the duration
of the test from 30 minutes to 60
minutes and decreasing the peak rate of
heat release from 200 kW to 150 kW
would likely increase costs significantly
without substantial increase in benefits.
Requiring production testing would also
likely increase costs. Therefore, the
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Commission finds that an open flame
standard for mattresses with the testing
requirements and criteria that are
specified in the Commission rule is the
least burdensome requirement that
would prevent or adequately reduce the
risk of injury for which the regulation is
being promulgated.
§ 1633.9
Glossary of terms.
(a) Absorbent pad. Pad used on top of
mattress. Designed to absorb moisture/
body fluids thereby reducing skin
irritation, can be one time use.
(b) Basket pad. Cushion for use in an
infant basket.
(c) Bunk beds. A tier of beds, usually
two or three, in a high frame complete
with mattresses (see Figure 11 of this
part).
(d) Car bed. Portable bed used to carry
a baby in an automobile.
(e) Carriage pad. Cushion to go into a
baby carriage.
(f) Chaise lounge. An upholstered
couch chair or a couch with a chair
back. It has a permanent back rest, no
arms, and sleeps one (see Figure 11).
(g) Convertible sofa. An upholstered
sofa that converts into an adult sized
bed. Mattress unfolds out and up from
under the seat cushioning (see Figure
11).
(h) Corner groups. Two twin size
bedding sets on frames, usually
slipcovered, and abutted to a corner
table. They also usually have loose
bolsters slipcovered (see Figure 11).
(i) Crib bumper. Padded cushion
which goes around three or four sides
inside a crib to protect the baby. Can
also be used in a playpen.
(j) Daybed. Daybed has foundation,
usually supported by coil or flat springs,
mounted between arms on which
mattress is placed. It has permanent
arms, no backrest, and sleeps one (see
Figure 11).
(k) Dressing table pad. Pad to cushion
a baby on top of a dressing table.
(l) Drop-arm loveseat. When side arms
are in vertical position, this piece is a
loveseat. The adjustable arms can be
lowered to one of four positions for a
chaise lounge effect or a single sleeper.
The vertical back support always
remains upright and stationary (see
Figure 11).
(m) Futon. A flexible mattress
generally used on the floor that can be
folded or rolled up for storage. It usually
consists of resilient material covered by
ticking.
(n) High riser. This is a frame of sofa
seating height with two equal size
mattresses without a backrest. The
frame slides out with the lower mattress
and rises to form a double or two single
beds (see Figure 11).
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(o) Infant carrier and lounge pad. Pad
to cushion a baby in an infant carrier.
(p) Mattress foundation. This is a
ticking covered structure used to
support a mattress or sleep surface. The
structure may include constructed
frames, foam, box springs or other
materials used alone or in combination.
(q) Murphy Bed. A style of sleep
system where the mattress and
foundation are fastened to the wall and
provide a means to retract or rotate the
bed assembly into the wall to release
more floor area for other uses.
(r) Pillow. Cloth bag filled with
resilient material such as feathers,
down, sponge rubber, urethane, or fiber
used as the support for the head of a
person.
(s) Playpen pad. Cushion used on the
bottom of a playpen.
(t) Portable crib. Smaller size than a
conventional crib. Can usually be
converted into a playpen.
(u) Quilted means stitched with
thread or by fusion through the ticking
and one or more layers of material.
(v) Roll-away-bed. Portable bed which
has frame that folds with the mattress
for compact storage.
(w) Sleep lounge. Upholstered seating
section is mounted on a frame. May
have bolster pillows along the wall as
backrests or may have attached
headrests (see Figure 11).
(x) Stroller pad. Cushion used in a
baby stroller.
(y) Sofa bed. These are pieces in
which the back of the sofa swings down
flat with the seat to form the sleeping
surface. All upholstered. Some sofa beds
have bedding boxes for storage of
bedding. There are two types: The onepiece, where the back and seat are
upholstered as a unit, supplying an
unbroken sleeping surface; and the twopiece, where back and seat are
upholstered separately (see Figure 11).
(z) Sofa lounge—(includes glideouts).
Upholstered seating section is mounted
on springs and in a frame that permit it
to be pulled out for sleeping. Has
upholstered backrest bedding box that is
hinged. Glideouts are single sleepers
with sloping seats and backrests. Seat
pulls out from beneath back and evens
up to supply level sleeping surface (see
Figure 11).
(aa) Studio couch. Consists of
upholstered seating section on
upholstered foundation. Many types
convert to twin beds (see Figure 11).
(bb) Studio divan. Twin size
upholstered seating section with
foundation is mounted on metal bed
frame. Has no arms or backrest, and
sleeps one (see Figure 11).
(cc) Trundle bed. A low bed which is
rolled under a larger bed. In some lines,
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the lower bed springs up to form a
double or two single beds as in a high
riser (see Figure 11).
(dd) Tufted means buttoned or laced
through the ticking and upholstery
material and/or core, or having the
ticking and loft material and/or core
drawn together at intervals by any other
method which produces a series of
depressions on the surface.
(ee) Twin studio divan. Frames which
glide out (but not up) and use seat
cushions, in addition to upholstered
foundation to sleep two. Has neither
arms nor back rest (see Figure 11).
(ff) Flip or sleeper chair. Chair that
unfolds to be used for sleeping,
typically has several connecting fabric
covered, solid foam core segments.
Subpart B—Rules and Requirements
§ 1633.10
Definitions.
(a) Standard means the Standard for
the Flammability (Open-Flame) of
Mattresses and Foundations (16 CFR
part 1633, subpart A).
(b) The definition of terms set forth in
§ 1633.2 of the standard shall also apply
to this subpart.
§ 1633.11
Records.
(a) Test and manufacturing records—
General. Every manufacturer (including
importers) or other person initially
introducing into commerce mattresses
or mattress and foundation sets subject
to the standard, irrespective of whether
guarantees are issued relative thereto,
shall maintain the following records:
(1) Test results and details of each test
performed by or for that manufacturer
(including failures), whether for
prototype, confirmation, or production,
in accordance with § 1633.7. Details
shall include: Location of test facility,
type of test room, test room conditions,
prototype or production identification
number, and test data including the
peak rate of heat release, total heat
release in first 10 minutes, a graphic
depiction of the peak rate of heat release
and total heat release over time. These
records shall include the name and
signature of person conducting the test,
the date of the test, and a certification
by the person overseeing the testing as
to the test results and that the test was
carried out in accordance with the
Standard. For confirmation tests, the
identification number must be that of
the prototype tested.
(2) Video and/or a minimum of eight
photographs of the testing of each
mattress or mattress and foundation set,
in accordance with § 1633.4 (one taken
before the test starts, one taken within
45 seconds of the start of the test, and
the remaining six taken at five minute
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intervals, starting at 5 minutes and
ending at 30 minutes), with the
prototype identification number or
production lot identification number of
the mattress or mattress foundation set,
date and time of test, and name and
location of testing facility clearly
displayed.
(b) Prototype records. In addition to
the records specified in paragraph (a) of
this section, the following records
related to prototype testing shall be
maintained:
(1) Unique identification number for
the qualified prototype and a list of the
unique identification numbers of each
prototype based on the qualified
prototype.
(2) A detailed description of all
materials, components, and methods of
construction for each prototype mattress
or prototype mattress and foundation
set. Such description shall include at a
minimum, the specifications of all
materials and components, name and
location of each material and
component supplier, and a physical
sample of each material and component
of the prototype.
(3) A list of which models and
production lots of mattresses or mattress
and foundation sets are represented by
each prototype identification number.
(4) Where a prototype is not required
to be tested before sale, pursuant to
§ 1633.4(b), the prototype identification
number of the qualified prototype on
which the mattress to be offered for sale
is based, and, at a minimum, the
manufacturing specifications and a
description of the materials substituted
and/or the size change, photographs or
physical specimens of the substituted
materials, and documentation based on
objectively reasonable criteria that the
change in any component, material, or
method of construction will not cause
the prototype to exceed the test criteria
specified in § 1633.3(b).
(5) Identification, composition, and
details of the application of any flame
retardant treatments and/or inherently
flame resistant fibers or other materials
employed in mattress components.
(c) Pooling confirmation test records.
With respect to pooling confirmation
testing, records shall be maintained to
show:
(1) The prototype identification
number assigned by the original
prototype manufacturer.
(2) Name and location of the
prototype manufacturer.
(3) Copy of prototype test records, and
records required by paragraph (b)(2) of
this section.
(4) A list of models of mattresses, and/
or mattress and foundation sets,
represented by the prototype.
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(d) Quality assurance records. In
addition to the records required by
paragraph (a) of this section, the
following quality assurance records
shall be maintained:
(1) A written copy of the
manufacturer’s quality assurance
procedures.
(2) Records of any production tests
performed. Production test records must
be maintained and shall include in
addition to the requirements of
paragraph (a) of this section, an assigned
production lot identification number
and the identification number of the
prototype associated with the specimen
tested.
(3) For each prototype, the number of
mattresses or mattress and foundation
sets in each production lot based on that
prototype.
(4) The duration of manufacture of the
production lot, i.e., the start and end
dates of production of that lot.
(5) Component, material and assembly
records. Every manufacturer conducting
tests and/or technical evaluations of
components and materials and/or
methods of construction must maintain
detailed records of such tests and
evaluations.
(e) Record retention requirements.
The records required under this section
shall be maintained by the manufacturer
(including importers) for as long as
mattresses/foundations based on the
prototype in question are in production
and shall be retained for 3 years
thereafter. Records shall be available
upon the request of Commission staff.
§ 1633.12
Labeling.
(a) Each mattress or mattress/
foundation set subject to the standard
shall bear a permanent, conspicuous,
and legible label containing:
(1) Name of the manufacturer;
(2) Location of the manufacturer,
including street address, city and state;
(3) Month and year of manufacture;
(4) Model identification;
(5) Prototype identification number
for the mattress; and
(6) A certification that the mattress
complies with this standard.
(b) The information required on labels
by this section shall be set forth
separately from any other information
appearing on such label. Other
information, representations, or
disclosures, appearing on labels
required by this section or elsewhere on
the item, shall not interfere with,
minimize, detract from, or conflict with
the required information.
(c) No person, other than the ultimate
consumer, shall remove or mutilate, or
cause or participate in the removal or
mutilation of, any label required by this
section to be affixed to any item.
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§ 1633.13 Tests for guaranty purposes,
compliance with this section, and one of a
kind exemption.
(a) Tests for guaranty purposes.
Reasonable and representative tests for
the purpose of issuing a guaranty under
section 8 of the Flammable Fabrics Act,
15 U.S.C. 1197, for mattresses or
mattress and foundation sets subject to
the standard shall be the tests performed
to show compliance with the standard.
(b) Compliance with this section. No
person subject to the Flammable Fabrics
Act shall manufacture for sale, import,
distribute, or otherwise market or
handle any mattress or mattress and
foundation set which is not in
compliance with the provisions under
subpart B of this part.
(c) ‘‘One of a kind’’ exemption for
physician prescribed mattresses. (1)(i) A
mattress or mattress and foundation set
manufactured in accordance with a
physician’s written prescription or
manufactured in accordance with other
comparable written medical therapeutic
specification, to be used in connection
with the treatment or management of a
named individual’s physical illness or
injury, shall be considered a ‘‘one of a
kind mattress’’ and shall be exempt
from testing under the standard
pursuant to § 1633.7 thereof: Provided,
that the mattress or mattress and
foundation set bears a permanent,
conspicuous and legible label which
states:
WARNING: This mattress or mattress and
foundation set may be subject to a large fire
if exposed to an open flame. It was
manufactured in accordance with a
physician’s prescription and has not been
tested under the Federal Standard for the
Flammability (Open-Flame) of Mattresses
and Foundation Sets (16 CFR part 1633).
(ii) Such labeling must be attached to
the mattress or mattress and foundation
set so as to remain on or affixed thereto
for the useful life of the mattress or
mattress and foundation set. The label
must be at least 40 square inches (250
sq. cm) with no linear dimension less
than 5 inches (12.5 cm). The letters in
the word ‘‘WARNING’’ shall be no less
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than 0.5 inch (1.27 cm) in height and all
letters on the label shall be in a color
which contrasts with the background of
the label. The warning statement which
appears on the label must also be
conspicuously displayed on the invoice
or other sales papers that accompany
the mattress in commerce from the
manufacturer to the final point of sale
to a consumer.
(2) The manufacturer of a mattress or
mattress and foundation set exempted
from testing under this paragraph shall,
in lieu of the records required to be kept
by §1633.10, retain a copy of the written
prescription or other comparable
written medical therapeutic
specification for such mattress during a
period of three years, measured from the
date of manufacture.
(3) For purposes of this subpart the
term physician shall mean a physician,
chiropractor or osteopath licensed or
otherwise permitted to practice by any
State of the United States.
Subpart C—Interpretations and
Policies
§ 1633.14 Policy clarification on
renovation of mattresses.
(a) Section 3 of the Flammable Fabrics
Act (15 U.S.C. 1192) prohibits, among
other things, the ‘‘manufacture for sale’’
of any product which fails to conform
to an applicable standard issued under
the Act. The standard for the
Flammability (Open-Flame) of
Mattresses and Foundations in subpart
A of this part, issued pursuant to the
Act, provides that, with certain
exceptions, mattresses must be tested
according to a prescribed method. The
standard does not exempt renovation;
nor does it specifically refer to
renovation.
(b) The purpose of this subpart is to
inform the public that mattresses
renovated for sale are considered by the
Commission to be mattresses
manufactured for sale and, therefore,
subject to the requirements of the openflame Mattress Standard. The
Commission believes that this policy
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clarification will better protect the
public against the unreasonable risk of
fires leading to death, personal injury or
significant property damage, and assure
that purchasers of renovated mattresses
receive the same protection under the
Flammable Fabrics Act as purchasers of
new mattresses.
(c) For purposes of this subpart,
mattress renovation includes a wide
range of operations. Replacing the
ticking or batting, stripping a mattress to
its springs, rebuilding a mattress, or
replacing components with new or
recycled materials, are all part of the
process of renovation. Any one, or any
combination of one or more, of these
steps in mattress renovation is
considered to be mattress manufacture.
(d) If the person who renovates the
mattress intends to retain the renovated
mattress for his or her own use, or if a
customer or a renovator merely hires the
services of the renovator and intends to
take back the renovated mattress for his
or her own use, ‘‘manufacture for sale’’
has not occurred and such a renovated
mattress is not subject to the mattress
standard.
(e) However, if a renovated mattress is
sold or intended for sale, either by the
renovator or the owner of the mattress
who hires the services of the renovator,
such a transaction is considered to be
‘‘manufacture for sale’’.
(f) Accordingly, mattress renovation is
considered by the Commission to be
‘‘manufacture for sale’’ and, therefore,
subject to the open-flame Mattress
Standard, when renovated mattresses
are sold or intended for sale by a
renovator or the customer of the
renovator.
(g) A renovator who believes that
certain mattresses are entitled to one-ofa-kind exemption, may present relevant
facts to the Commission and petition for
an exemption. Renovators are expected
to comply with all the testing
requirements of the open-flame Mattress
Standard until an exemption is
approved.
BILLING CODE 6355–01–P
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Appendix A: Calibration of Propane
Flowmeters
1. Once the assembly of the burner is
completed and all the connecting points are
checked for gas leakage, the most critical task
is ensuring the exact flow rates of propane
into the top and side burners, as described
in the test protocol. The gas flow rates are
specified at 12.9 Liters per minute (LPM) ±
0.1 LPM and 6.6 LPM ± 0.05 LPM for the top
and side burners (Burners 1 and 2),
respectively, at a pressure of 101 ± 5
kiloPascal (kPa) (standard atmospheric
pressure) and a temperature of 22 ± 3°
Centigrade (C). The rotameters that are
installed in the control box of the burner
assembly need to be calibrated for accurate
measurement of these flow rates.
2. The most practical and accurate method
of measuring and calibrating the flow rate of
gases (including propane) is use of a
diaphragm test meter (also called a dry test
meter). A diaphragm test meter functions
based on positive displacement of a fixed
volume of gas per rotation and its reading is
therefore independent of the type of the gas
being used. The gas pressure and
temperature, however, can have significant
impact on the measurement of flow rate.
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3. The gas pressure downstream of the
rotameters that are installed in the control
box of the burner assembly is maintained
near atmospheric pressure (only a few
millimeters of water above atmosphere).
Therefore, the best location to place the
diaphragm test meter for gas flow calibration
is right downstream of the control box. The
pressure at the propane tank must be set at
20 ± 0.5 pounds per square inch gage (psig).
Calibration Procedure:
Install the diaphragm test meter (DTM)
downstream of the control box in the line for
the top burner. Check all connecting points
for gas leakage. Open the main valve on the
propane tank and set a pressure of 20 ± 0.5
psig. Set the timers in the control box for 999
seconds (or the maximum range possible).
Record the barometric pressure. Turn the
‘‘Burner 1’’ switch to ON and ignite the top
burner. Allow the gas to flow for 2–3 minutes
until the DTM is stabilized. Record the
pressure and temperature in the DTM. Use a
stopwatch to record at least one minute
worth of complete rotations while counting
the number of rotations.1 Calculate the
1 With a diaphragm test meter well-sized to this
application, this should be more than five rotations.
A one liter per rotation meter will require 10 to 15
rotations for the flow measurements and greater
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propane gas flow rate using the recorded time
and number of rotations (total flow in that
time). Use the pressure and temperature
readings to convert to standard conditions.
Repeat this measurement for two additional
meter setting to allow for calibrating the
flowmeter throughout the range of interest.
Plot the flow versus meter reading, fit a best
line (possibly quadratic) through these points
to find the meter setting for a flow of 12.9
LPM at the above ‘‘standard’’ conditions.
Repeat this procedure for ‘‘Burner 2’’ using
three meter readings to find the setting that
gives a flow rate of 6.6 LPM at the standard
conditions. After completion of the
calibration, re-set the timers to 70 and 50
seconds.
Appendix B: Burner Operation Sequence
1. Starting point: AC power on (red knob
out); propane pressure set to 20 psig at bottle;
timers set to 70 s (top burner) and 50 s (side
burner); flowmeters pre-set to values that
give the requisite propane gas flow rates to
each burner. Pilot tubes set just behind front
surface of burners; pilot flow valves set for
ca. 2 cm flames.
2. Position burner on test specimen and
remove sheet metal platen.
than the minimum of one minute recording time
specified here.
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3. Place screens around both burners.
4. Open pilot ball valves one at a time and
ignite pilots with hand-held flame; adjust
flame size if necessary being very careful to
avoid a jet flame that could prematurely
ignite the test specimen (Beware: after a long
interval between tests the low pilot flow rate
will require a long time to displace air in the
line and achieve the steady-state flame size.)
5. Open both burner ball valves.
6. Start test exposure by simultaneously
turning on power to both timers (timers will
turn off burners at appropriate times).
7. Check/adjust propane flow rates (DO
THIS ESSENTIAL TASK IMMEDIATELY.
Experience shows the flow will not remain
the same from test-to-test in spite of fixed
valve positions so adjustment is essential.)
8. After burners are out:
a. Lift top burner and back assembly away
from specimen.
b. Turn off power to both timers.
c. Remove screens.
d. Turn off pilots at their ball valves.
Dated: December 22, 2004.
Todd Stevenson,
Secretary, Consumer Product Safety
Commission.
[FR Doc. 05–416 Filed 1–12–05; 8:45 am]
BILLING CODE 6355–01–P
List of Relevant Documents
1. Briefing memorandum from Margaret
Neily, Project Manager, Directorate for
Engineering Sciences, to the Commission,
‘‘Notice of Proposed Rulemaking for Mattress
Flammability (Open Flame) and Options for
Addressing Bedclothes Involvement in
Mattress/Bedding Fires,’’ November 1, 2004.
2. Memorandum from Allyson Tenney, ES,
to Margaret Neily, Engineering Sciences,
‘‘Background and Technical Rationale for
Draft Proposed Standard for Open Flame
Mattress Flammability,’’ October 29, 2004.
3. Memorandum from Linda Smith and
David Miller, EPI, ‘‘Residential Fires
Involving Mattresses and Bedding,’’ October
2004.
4. Memorandum from Carolyn Meiers,
ESHF, to Margaret Neily, Project Manager,
‘‘Criteria for Judging Effectiveness of
Proposed Mattress Standard,’’ October 14,
2004.
5. Memorandum from Carolyn Meiers,
ESHF, to Margaret Neily, Project Manager,
‘‘Human Behavior in Fire,’’ October 7, 2004.
6. Memorandum from Treye Thomas and
Patricia Brundage, HS, ‘‘Qualitative
Assessment of Potential Risk from the Use of
Flame Retardant Chemicals in Mattresses,’’
October 25, 2004.
7. Memorandum from Robert Franklin, EC,
to Margaret L. Neily, ES, ‘‘Preliminary
Environmental Assessment of a Draft
Proposed Open-Flame Ignition Resistance
Standard for Mattresses,’’ October 21, 2004.
8. Memorandum from Soumaya Tohamy,
EC, to Margaret Neily, Project Manager,
‘‘Preliminary Regulatory Analysis of a Draft
Proposed Standard to Address Open Flame
Ignitions of Mattresses,’’ October 27, 2004.
9. Memorandum from Soumaya Tohamy,
EC, to Margaret Neily, Project Manager,
‘‘Initial Regulatory Flexibility Analysis of a
Draft Proposed Standard to Address Open
Flame Ignitions of Mattresses,’’ October 27,
2004.
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10. Terrance R. Karels, EC, to Margaret L.
Neily, ES, ‘‘Updated Mattress Market
Information,’’ October 5, 2004.
11 Memorandum from Linda Smith EPI,
‘‘Involvement of Bedclothes in Residential
Mattress Fires,’’ May 2004.
12. Terrance R. Karels, EC, to Margaret L.
Neily, ES, ‘‘Bedding Market Information,’’
October 5, 2004.
13. Memorandum from Allyson Tenney,
ES, to Margaret Neily, Engineering Sciences,
‘‘Bedclothes Flammability,’’ October 29,
2004.
14. Memorandum from Martha A. Kosh,
OS, to ES, ‘‘Standard to Address Open Flame
Ignition of Mattresses/Bedding; ANPR,’’ List
of comments on CF 02–1, December 13, 2001.
15. Memorandum from Martha A. Kosh,
OS, to ES, ‘‘Standard to Address Open Flame
Ignition of Mattresses/Bedding; ANPR
(Revised),’’ List of comments on CF 02–1,
September 27, 2004.
16. National Research Council (2000).
Toxicological Risks of Selected FlameRetardant Chemicals (Washington, DC,
National Academy Press).
CONSUMER PRODUCT SAFETY
COMMISSION
16 CFR Part 1634
Standard To Address Open Flame
Ignition of Bedclothes; Advance Notice
of Proposed Rulemaking
Consumer Product Safety
Commission.
ACTION: Advance Notice of proposed
rulemaking.
AGENCY:
SUMMARY: The Commission is
considering issuing a flammability
standard that would address open flame
ignition of bedclothes. (Commissioner
Thomas H. Moore issued a statement, a
copy of which is available from the
Commission’s Office of the Secretary or
from the Commission’s Web site,
https://www.cpsc.gov.) Elsewhere in
today’s Federal Register, the
Commission is proposing a flammability
standard that addresses open flame
ignition of mattresses/foundations.
Research indicates that in mattress fires
the mattress and bedclothes operate
together as a system. Thus, the
Commission believes that a
flammability standard for bedclothes in
addition to one for mattresses may be
appropriate. The Commission invites
comments concerning the risk of injury
identified in this notice, the regulatory
alternatives being considered, and other
possible alternatives. The Commission
also invites submission of any existing
standard or statement of intention to
modify or develop a voluntary standard
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to address small open flame ignition of
bedclothes.
DATES: Comments and submissions
must be received by March 14, 2005.
ADDRESSES: Comments should be
mailed, preferably in five copies, to the
Office of the Secretary, Consumer
Product Safety Commission,
Washington, DC 20207–0001, or
delivered to the Office of the Secretary,
Consumer Product Safety Commission,
Room 502, 4330 East-West Highway,
Bethesda, Maryland; telephone (301)
504–0800. Comments also may be filed
by telefacsimile to (301) 504–0127 or by
email to cpsc-os@cpsc.gov. Comments
should be captioned ‘‘Bedclothes
ANPR.’’
FOR FURTHER INFORMATION CONTACT:
Margaret Neily, Directorate for
Engineering Sciences, Consumer
Product Safety Commission,
Washington, DC 20207; telephone (301)
504–0508, extension 1293.
SUPPLEMENTARY INFORMATION:
A. Background
An existing flammability standard for
mattresses addresses ignition of
mattresses and mattress pads by
cigarettes. 16 CFR Part 1632. On October
11, 2001, the Commission published an
advance notice of proposed rulemaking
(‘‘ANPR’’) addressing open flame
ignition of mattresses. 66 FR 51886.
That ANPR was the result of several
years of evaluation by Commission staff
and petitions on mattress flammability
submitted by Whitney Davis, Director of
the Children’s Coalition for Fire-safe
Mattresses. As explained in the ANPR,
the Sleep Products Safety Council
(‘‘SPSC’’), an affiliate of the
International Sleep Products
Association (‘‘ISPA’’), sponsored a
research program at the National
Institute of Standards and Technology
(‘‘NIST’’). The NIST research program
has provided a great deal of technical
information about mattress fires,
including the role of bedclothes in such
fires.
As noted in the mattress ANPR,
mattresses generally are not used alone,
but are covered by bedding or
bedclothes, whose presence
significantly affects the character of the
fire. In most incidents a small open
flame initially ignites the bedding, and
these materials serve as a larger ignition
source for the mattress. Because few
materials can resist such a large ignition
source, the typical approach of
preventing ignition of a mattress
through a product performance standard
may not be fully adequate for an open
flame mattress standard. Therefore, the
Commission has taken the approach in
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[Federal Register Volume 70, Number 9 (Thursday, January 13, 2005)]
[Proposed Rules]
[Pages 2470-2514]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: 05-416]
[[Page 2469]]
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Part II
Consumer Product Safety Commission
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16 CFR Parts 1633 and 1634
Standard for the Flammability (Open Flame) of Mattresses and Mattress/
Foundation Sets; Standard To Address Open Flame Ignition of Bedclothes;
Proposed Rules
Federal Register / Vol. 70, No. 9 / Thursday, January 13, 2005 /
Proposed Rules
[[Page 2470]]
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CONSUMER PRODUCT SAFETY COMMISSION
16 CFR Part 1633
Standard for the Flammability (Open Flame) of Mattresses and
Mattress/Foundation Sets; Notice of Proposed Rulemaking
AGENCY: Consumer Product Safety Commission.
ACTION: Notice of proposed rulemaking.
-----------------------------------------------------------------------
SUMMARY: The Commission is proposing a flammability standard under the
authority of the Flammable Fabrics Act that would address open flame
ignition of mattresses and mattress and foundation sets (``mattresses/
sets''). The Commission currently has a flammability standard that
addresses ignition of mattresses by cigarettes. However, that standard
does not address mattress fires ignited by open flames. The proposed
standard sets performance requirements based on research conducted by
the National Institute of Standards and Technology (``NIST'').
Mattresses/sets that comply with the proposed requirements will
generate a smaller size fire, thus reducing the possibility of
flashover occurring. These improved mattresses should result in
significant reductions in deaths and injuries associated with mattress
fires. Due to the interaction of mattresses and bedclothes discussed
herein, elsewhere in today's Federal Register the Commission is
publishing an advance notice of proposed rulemaking to begin rulemaking
on bedclothes.
DATES: Written comments in response to this document must be received
by the Commission not later than March 29, 2005. Comments on elements
of the proposed rule that, if issued in final form would constitute
collection of information requirements under the Paperwork Reduction
Act, may be filed with the Office of Management and Budget (``OMB'')
and with the Commission. Comments will be received by OMB until March
14, 2005.
ADDRESSES: Comments should be filed by email to cpsc-os@cpsc.gov.
Comments also may be filed by telefacsimile to (301)504-0127 or mailed,
preferably in five copies, to the Office of the Secretary, Consumer
Product Safety Commission, Washington, DC 20207-0001, or delivered to
the Office of the Secretary, Consumer Product Safety Commission, Room
502, 4330 East-West Highway, Bethesda, Maryland; telephone (301) 504-
7530. Comments should be captioned ``Mattress NPR.''
Comments to OMB should be directed to the Desk Officer for the
Consumer Product Safety Commission, Office of Information and
Regulatory Affairs, OMB, Washington, DC 20503. The Commission asks
commenters to provide copies of such comments to the Commission's
Office of the Secretary, with a caption or cover letter identifying the
materials as comments submitted to OMB on the proposed collection of
information requirements for the proposed mattress standard.
FOR FURTHER INFORMATION CONTACT: Margaret Neily, Directorate for
Engineering Sciences, Consumer Product Safety Commission, Washington,
DC 20207; telephone (301) 504-7530.
SUPPLEMENTARY INFORMATION:
A. Background
On October 11, 2001, the Commission issued an advance notice of
proposed rulemaking (``ANPR'') concerning the open flame ignition of
mattresses/bedding. 66 FR 51886. The ANPR was the result of the staff's
evaluation of fire data over the course of several years and petitions
filed by Whitney Davis, director of the Children's Coalition for Fire-
Safe Mattresses (``CCFSM''). Although the Commission has an existing
mattress flammability standard that addresses ignition by cigarettes,
16 CFR Part 1632, no current Commission standard directly addresses
open flame ignition of mattresses. The most common open flame sources
are lighters, candles and matches. The Commission is now issuing a
notice of proposed rulemaking (``NPR'') proposing a flammability
standard to address open flame ignition of mattresses.\1\
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\1\ Commissioner Thomas H. Moore issued a statement, a copy of
which is available from the Commission's Office of the Secretary or
from the Commission's Web site, https://www.cpsc.gov.
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Characteristics of mattress/bedding fires. A burning mattress
generally provides the biggest fuel load in a typical bedroom fire.
Once the mattress ignites, the fire develops rapidly creating dangerous
flashover conditions. Flashover is the point at which the entire
contents of a room are ignited simultaneously by radiant heat, making
conditions in the room untenable and safe exit from the room
impossible. At flashover, room temperatures typically exceed 600-800 C
(approximately 1100-1470 F). In these conditions, carbon monoxide
rapidly increases, and oxygen is rapidly depleted. Mattress fires that
lead to flashover are responsible for about two-thirds of all mattress
fatalities. This accounts for nearly all of the fatalities that occur
outside the room where the fire originated and about half of the
fatalities that occur within the room of origin. A mattress that
reduces the likelihood of reaching flashover could significantly reduce
deaths and injuries associated with bedroom fires. [1&2] \2\
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\2\ Numbers in brackets refer to documents listed at the end of
this notice. They are available from the Commission's Office of the
Secretary (see ``Addresses'' section above) or from the Commission's
Web site (https://www.cpsc.gov/library/foia/foia.html).
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The size of a fire is measured by its rate of heat release. A heat
release rate of approximately 1,000 kilowatts (``kW'') leads to
flashover in a typical room. Tests of twin size mattresses of
traditional construction (complying with the existing mattress standard
in 16 CFR 1632) without bedclothes have measured peak heat release
rates that exceeded 2,000 kW in less than 5 minutes. Tests of
traditional king size mattresses measured nearly double that peak rate
of heat release. [2]
Fire modeling and available test data show that as a room fire
grows, a layer of accumulating hot gases and smoke thickens downward
from the ceiling. For fires exceeding 600 kW, this layer typically
descends to less than three feet from the floor. Heat release rates
exceeding 500 kW are generally considered to pose a serious threat of
incapacitation and of igniting nearby items. [2]
The objective of the proposed standard is to limit the size of
mattress/bedding fires to below 1,000 kW for a period of time by
reducing the heat release from the bed, specifically the mattress and
foundation, and by reducing the likelihood that other objects in the
room will become involved in the fire.
Research has shown that the mattress, foundation and bedclothes
operate as a system in bedroom fires. Often the first item ignited is
bedclothes, which then ignite the mattress. The gas burners used in the
proposed test method are designed to represent burning bedclothes.
Research has indicated that bedclothes themselves can contribute
significantly to fires, even reaching heat release rates of up to 800
kW. [2&13] Because of the role of bedclothes in mattress fires, the
Commission is initiating a rulemaking on bedclothes through an ANPR
that is published elsewhere in today's Federal Register. The Commission
received numerous comments on the mattress ANPR concerning the role of
bedclothes and the need for a rule addressing them. These comments are
discussed in section J of this document.
[[Page 2471]]
NIST research. The industry's Sleep Products Safety Council
(``SPSC''), an affiliate of the International Sleep Products
Association (``ISPA''), sponsored a research program at the National
Institute of Standards and Technology (``NIST'') to better understand
mattress/bedding fires and establish the technological basis for future
performance requirements of a standard. NIST has conducted extensive
research, which has become the basis for California's open flame
mattress standard (Technical Bulletin or ``TB'' 603) and for the
Commission's proposed standard.
The NIST research showed that a full-scale test is the most
reliable method for measuring fire performance of mattresses/sets
because they contain many materials in a complex construction. Because
the order of materials, method of assembly, quantity of materials, and
quality of construction, among other factors, can affect fire behavior,
the complete product may perform differently in a fire than the
individual components would. Based on its research, NIST drafted a
full-scale test method for mattresses that uses a pair of gas burners
to represent burning bedclothes as the ignition source. Both the
Commission's proposed standard and California's TB 603, use this test
method. [1&2]
Overview of the proposed standard. With certain exceptions
explained in section G below, the proposed standard requires
manufacturers to test specimens of each of their mattress prototypes
(designs) before mattresses based on that prototype may be introduced
into commerce. If a mattress and foundation are offered for sale as a
set, the mattress must be tested with the corresponding foundation. The
prototype specimens are tested using a pair of gas burners as the
ignition source. The mattress and corresponding foundation, if any,
must not exceed a 200 kW peak heat release rate at any time during the
30 minute test, and the total energy released must be less than 15
megajoules (``MJ'') for the first 10 minutes of the test. The proposed
standard is discussed in greater detail in section G of this document.
B. Statutory Authority
This proceeding is conducted pursuant to Section 4 of the Flammable
Fabrics Act (``FFA''), which authorizes the Commission to initiate
proceedings for a flammability standard when it finds that such a
standard is ``needed to protect the public against unreasonable risk of
the occurrence of fire leading to death or personal injury, or
significant property damage.'' 15 U.S.C. 1193(a).
Section 4 also sets forth the process by which the Commission may
issue a flammability standard. As required in section 4(g), the
Commission has issued an ANPR. 66 FR 51886. 15 U.S.C. 1193(g). The
Commission has reviewed the comments submitted in response to the ANPR
and now is issuing a notice of proposed rulemaking (``NPR'') containing
the text of the proposed rule along with alternatives the Commission
has considered and a preliminary regulatory analysis. 15 U.S.C.
1193(i). The Commission will consider comments provided in response to
the NPR and decide whether to issue a final rule along with a final
regulatory analysis. 15 U.S.C. 1193(j). The Commission cannot issue a
final rule unless it makes certain findings and includes these in the
regulation. The Commission must find: (1) If an applicable voluntary
standard has been adopted and implemented, that compliance with the
voluntary standard is not likely to adequately reduce the risk of
injury, or compliance with the voluntary standard is not likely to be
substantial; (2) that benefits expected from the regulation bear a
reasonable relationship to its costs; and (3) that the regulation
imposes the least burdensome alternative that would adequately reduce
the risk of injury. 15 U.S.C. 1193(j)(2). In addition, the Commission
must find that the standard (1) is needed to adequately protect the
public against the risk of the occurrence of fire leading to death,
injury or significant property damage, (2) is reasonable,
technologically practicable, and appropriate, (3) is limited to
fabrics, related materials or products which present unreasonable
risks, and (4) is stated in objective terms. 15 U.S.C. 1193(b).
C. The Product
The proposed standard applies to mattresses and mattress and
foundation sets (``mattresses/sets''). Mattress is defined as a
resilient material, used alone or in combination with other materials,
enclosed in a ticking and intended or promoted for sleeping upon. This
includes adult mattresses, youth mattresses, crib mattresses (including
portable crib mattresses), bunk bed mattresses, futons, flip chairs
without a permanent back or arms, sleeper chairs, and water beds and
air mattresses if they contain upholstery material between the ticking
and the mattress core. Mattresses used in items of upholstered
furniture such as convertible sofa bed mattresses are also included.
Not included as mattresses are: sleeping bags, mattress pads, or other
items used on top of the bed, or upholstered furniture which does not
contain a mattress. However, the Commission could decide to address
mattress pads or other top of the bed items in its rulemaking on
bedclothes.
Under the proposed standard, the mattress must be tested with its
corresponding foundation if the mattress and foundation are offered for
sale as a set. A foundation is a ticking covered structure used to
support a mattress.
According to ISPA, the top four producers of mattresses and
foundations account for almost 60 percent of total U.S. production. In
2001, there were 639 establishments producing mattresses in the U.S.
[10]
Mattresses and foundations are typically sold as sets. However,
more mattresses are sold annually than foundations; some mattresses are
sold as replacements for existing mattresses (without a new foundation)
or are for use in platform beds or other beds that do not require a
foundation. ISPA estimated that the total number of U.S. conventional
mattress shipments was 21.5 million in 2002, and is estimated to be
22.1 million in 2003 and 22.8 million in 2004. These estimates do not
include futons, crib mattresses, juvenile mattresses, sleep sofa
inserts, or hybrid water mattresses. These ``non-conventional'' sleep
surfaces are estimated to comprise about 10 percent of total annual
shipments of all sleep products. The value of mattress and foundation
shipments in 2002, according to ISPA, was $3.26 and $1.51 billion
respectively. [10]
The expected useful life of mattresses can vary substantially, with
more expensive models generally experiencing the longest useful lives.
Industry sources recommend replacement of mattresses after 10 to 12
years of use, but do not specifically estimate the average life
expectancy. In the 2001 mattress ANPR, the Commission estimated the
expected useful life of a mattress at about 14 years. To estimate the
number of mattresses in use for analysis of the proposed rule, the
Commission used both a 10 year and 14 year average product life. Using
CPSC's Product Population Model, the Commission estimates the number of
mattresses currently in use (i.e., in 2004) to be 233 million
mattresses using a ten-year average product life, and 302.6 million
mattresses using a fourteen-year average product life. [8&10]
According to industry sources, queen size mattresses are the most
commonly used. In 2002, queen size mattresses were used by 34 percent
of U.S. consumers. Twin and twin XL are used
[[Page 2472]]
by 31.2 percent of U.S. consumers, followed by full and full XL (21
percent), king and California king (11 percent), and all other sizes
(2.6 percent). The average manufacturing price in 2002 was $152 for a
mattress and $86 for a foundation. Thus, the average manufacturing
price of a mattress/foundation set was about $238 in 2002. Although
there are no readily available data on average retail prices for
mattress/foundation sets by size, ISPA reports that sets selling under
$500 represent 40.7 percent of the market. Sets selling for between
$500 and $1000 represent 39.2 percent of the market. [10]
The top four manufacturers of mattresses and foundations operate
about one-half of the 639 U.S. establishments producing these products.
The remainder of the establishments are operated by smaller firms.
According to the Statistics of U.S. Businesses Census Bureau data for
2001, there were 557 mattress firms operating these 639 establishments.
According to the same data source, all but twelve mattress firms had
less than 500 employees. If one considers a firm with fewer than 500
employees to be a small business, then 97.8 percent (557-12/557) of all
mattress firms are small businesses. [9&10] The potential impact of the
proposed standard on these small businesses is discussed in section M
of this document.
D. Risk of Injury
Annual estimates of national fires and fire losses involving
ignition of a mattress or bedding are based on data from the U.S. Fire
Administration's National Fire Incident Reporting System (``NFIRS'')
and the National Fire Protection Administration's (``NFPA'') annual
survey of fire departments. The most recent national fire loss
estimates indicated that mattresses and bedding were the first items to
ignite in 19,400 residential fires attended by the fire service
annually during 1995-1999. These fires resulted in 440 deaths, 2,230
injuries and $273.9 million in property loss each year. Of these, the
staff considers an estimated 18,500 fires, 440 deaths, 2,160 injuries,
and $259.5 million property loss annually to be addressable by the
proposed standard. Addressable means the incidents were of a type that
would be affected by the proposed standard solely based on the
characteristics of the fire cause (i.e., a fire that ignited a mattress
or that ignited bedclothes which in turn ignited the mattress). For
example, an incident that involved burning bedclothes and occurred in a
laundry room would not be considered addressable. [3]
Among the addressable casualties, open flame fires accounted for
about 140 deaths (32 percent) and 1,050 injuries (49 percent) annually.
Smoking fires accounted for 210 deaths (48 percent) and about 640
injuries (30 percent) annually. Children younger than age 15 accounted
for an estimated 120 addressable deaths (27 percent) and 500
addressable injuries (23 percent) annually. Adults age 65 and older
accounted for an estimated 120 addressable deaths (27 percent) and 250
addressable injuries (12 percent) annually. [3]
E. NIST Research
Overview. NIST has conducted extensive research on mattress/bedding
fires for SPSC and the Commission. SPSC sponsored several phases of
research at NIST to gain an understanding of the complex fire scenario
involving mattresses and to develop an effective test method to
evaluate a mattress's performance when it is exposed to an open flame
ignition source. The first phase of the research program, known as
Flammability Assessment Methodology for Mattresses, involved four main
objectives: (1) Evaluating the behavior of various combinations of
bedclothes, (2) characterizing the heat impact imposed on a mattress by
bedclothes, (3) developing burners to simulate burning bedclothes, and
(4) testing the burners on different mattress designs to ensure their
consistency. NIST's findings, published in NISTIR 6498, established the
basis for an appropriate test method and the next phase of the research
program. [2] \3\
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\3\ NIST publications can be found at NIST's Web site, (https://
fire.nist.gov/bfrlpubs/).
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Phase 2 of the NIST research focused on (1) analyzing the hazard by
estimating the peak rate of heat release from a mattress with an
improved design, (2) measuring a burning mattress's ability to involve
nearby items in the room, and (3) assessing (in a limited way)
bedclothes and their contribution to mattress fire hazards. This
testing used mattresses with improved flammability properties while the
flammability properties of bedclothes remained unchanged. [2] The
findings from Phase 2 are detailed in NIST Technical Note 1446,
Estimating Reduced Fire Risk Resulting from an Improved Mattress
Flammability Standard.
Bedclothes. During phase 2, NIST conducted tests on twin and king
size mattresses with corresponding size bedclothes. In some tests, the
bedclothes contributed up to 400 kW to the fire. NIST had previously
estimated that a heat release rate that may cause flashover for an
ordinary sized room is about 1000 kW. Thus, a mattress that contributes
more than 500 kW at the same time as bedclothes are contributing 400 kW
could lead to flashover. NIST conducted additional tests concerning
bedclothes for CPSC, which are discussed later in this section. [2]
Other objects in the same room. Part of the NIST study assessed the
potential of a bed fire to ignite other objects in the same room. Other
objects become involved by either direct flame impingement or by fire
generated radiation. Although the location of objects in a bedroom is
highly variable, their potential involvement is significantly
influenced by their shape and properties relating to ease of ignition.
NIST concluded from this research that further reducing the heat
release rate from the bed could reduce the potential for ignition of
other objects and therefore reduce their contribution to the overall
heat release rate. [2]
Modeling. NIST used fire modeling to explore the effect that heat
and toxic gases from bed fires can have throughout a home. Fire
modeling is an analytical tool that uses mathematical calculations to
predict real-world fire behavior. NIST used this modeling to
corroborate test data exploring the predicted levels of heat and toxic
gases for the room of origin and outside the room of origin. The
modeling suggested that untenable fire conditions would occur within
the room, with little difference between a small and large room, at 10
minutes and 25 MJ. [2]
Gas burners' correspondence to bedclothes. In addition to the
research discussed above, NIST conducted separate studies for CPSC. One
series of tests evaluated improved mattress designs and further
supported the correlation between full scale mattress tests with the
NIST gas burners and actual bedclothes. The study, NISTIR 7006-
Flammability Test of Full-Scale Mattresses: Gas Burners Versus Burning
Bedclothes, found that mattress designs showing good performance when
tested with burners also exhibited significantly improved performance
when tested with burning bedclothes. [2]
Interaction between mattresses and bedclothes. NIST's work for CPSC
also reinforced observations from previous NIST research on the
interaction between the mattress and bedclothes. NISTIR 7006. Tests on
improved mattress designs with burning bedclothes as the ignition
source tend to have two distinct heat release rate peaks. The first
peak is predominantly
[[Page 2473]]
from the burning bedclothes, while the second is predominantly from the
mattress and foundation. In tests of good performing mattress designs,
NIST found the second peak (i.e., from the mattress/foundation) to be
comparable or lower than the first peak (i.e., from the bedclothes) and
to occur appreciably later. [2]
Mattress size. In another study conducted by NIST in 2004 for CPSC,
NIST found that a twin size mattress made in a design that yields a
very low peak heat release rate (less than 50 kW) tested with gas
burners behaves essentially the same as a queen or king size mattress
of the same design. Mattress designs that yield a moderate heat release
rate peak (greater than 100 kW, but less than 200 kW) tend to behave
the same for the first 30 minutes in twin size and king size. After
ignition with the burners, the fire is localized (i.e., its spread is
limited) and is not affected by the mattress size. [2]
NIST evaluated the same mattress designs and sizes with burning
bedclothes. NIST found the mattress size to have an apparent effect
during these tests due to the differences in the size and fuel load of
bedclothes. In tests of ``well performing'' mattress designs with
burning bedclothes, the early heat release rate peak when testing a
king size mattress was triple that when testing a twin size mattress.
This was driven by the burning bedclothes. Mattress designs that showed
a moderate heat release rate peak when tested with gas burners resulted
in more serious fires when tested with burning bedclothes, especially
in king size mattresses. [2]
F. Existing Open Flame Standards
In the mattress ANPR the staff reviewed 13 existing tests or
standards relevant to open flame hazards associated with mattresses/
bedding. These included Technical Bulletin (``TB'') 129, TB 121, and TB
117 from California, the Michigan Roll-up Test, and Boston Fire
Department (``BFD'') 1X-11, as well as standards from ASTM
International (formerly the American Society for Testing and Materials)
(ASTM E-1474 and ASTM E-1590), Underwriters Laboratories (UL 1895 and
UL 2060), the National Fire Protection Association (NFPA 264A and NFPA
267) and the United Kingdom (British Standard (``BS'') 6807 and BS
5852). 66 FR 51886.
As directed by California Assembly Bill 603, California's Bureau of
Home Furnishings and Thermal Insulation (``CBHF'') adopted Technical
Bulletin 603 (``TB 603''), an open flame fire standard for mattresses
and mattress/box spring sets and futons. TB 603 is expected to go into
effect January 1, 2005 and applies to items manufactured for sale in
California. The California standard incorporates the same test
methodology as the Commission's proposed standard. Both are based on
testing and research conducted at NIST. Both TB 603 and the
Commission's proposed standard require that mattresses not exceed a 200
kW peak heat release rate during the 30 minute test. However, the
Commission's proposed standard requires that mattresses not exceed a
total heat release of 15 MJ in the first ten minutes of the test, while
TB 603 sets test criteria of 25 MJ in the first 10 minutes of the test.
The Commission believes that the research NIST has conducted,
discussed above, establishes the most appropriate basis for an open
flame mattress standard. Several comments on the ANPR also expressed
this view (see section J of this document).
G. The Proposed Standard
1. General
The proposed standard sets forth performance requirements that each
mattress/set must meet before being introduced into commerce. The test
method is a full scale test based on the NIST research discussed above.
The mattress specimen (a mattress or mattress and foundation set,
usually in a twin size) is exposed to a pair of T shaped propane
burners and allowed to burn freely for a period of 30 minutes. The
burners were designed to represent burning bedclothes. Measurements are
taken of the heat release rate from the specimen and energy generated
from the fire. The proposed standard establishes two test criteria,
both of which the mattress/set must meet in order to comply with the
standard: (1) The peak rate of heat release for the mattress/foundation
set must not exceed 200 kW at any time during the 30 minute test; and
(2) The total heat release must not exceed 15 MJ for the first 10
minutes of the test.
2. Scope
The proposed standard applies to mattresses and mattress and
foundation combinations sold as sets. Mattress is defined, as it is in
the existing mattress standard at 16 CFR 1632, as ``a resilient
material or combination of materials enclosed by a ticking (used alone
or in combination with other products) intended or promoted for
sleeping upon.'' The proposed standard lists several types of
mattresses that are included in this definition (e.g., futons, crib
mattresses, youth mattresses). It also refers to a glossary of terms
where these items are further defined.
Specifically excluded from the definition of mattress are mattress
pads, pillows and other top of the mattress items, upholstered
furniture which does not contain a mattress, and juvenile or other
product pads. Mattress pads and other top of the bed items may be
addressed in the Commission's rulemaking on bedclothes.
Like the Commission's existing mattress standard, the proposed
standard allows an exemption for one-of-a-kind mattresses and
foundations if they are manufactured to fulfill a physician's written
prescription or manufactured in accordance with comparable medical
therapeutic specifications.
3. Test Method
The proposed standard uses the full scale test method developed by
NIST in the course of its research. Based on the NIST work, the
Commission believes that a full scale test is necessary because of the
complexities of mattress construction. Testing individual components
will not necessarily reveal the likely fire performance of the complete
mattress.
Under the proposed standard, the specimen (a mattress and
corresponding foundation if they are to be offered for sale together as
a set) is exposed to a pair of T-shaped gas burners. The specimen is to
be no smaller than twin size, unless the largest size mattress or set
produced of that type is smaller than twin size, in which case the
largest size must be tested.
The burners impose a specified local heat flux simultaneously to
the top and side of the mattress/set for a specified period of time (70
seconds for the top burner and 50 seconds for the side burner). The
burners were designed to represent the local heat flux imposed on a
mattress by burning bedclothes. The heat flux and burner duration were
derived from data obtained from burning a wide range of bedding items.
As discussed above, NIST test results using the burners have been shown
to correlate with results obtained with bedclothes.
The proposed standard allows the test to be conducted either in an
open calorimeter or test room configuration. Tests have shown that
either configuration is acceptable. Although room effects (i.e., the
size and characteristics of the room) can be a factor in mattress
flammability performance, test data show that room effects do not
become an issue until a fire reaches about 300 to 400 kW.
[[Page 2474]]
Because the proposed standard limits the peak rate of heat release to
200 kW, room effects should not be an issue in the test. Preliminary
analysis of data from the inter-laboratory study (discussed in section
I) does not suggest any significant differences between tests based on
either test configuration. The NIST test method allowed a third test
configuration, essentially a smaller test room than described in the
proposed standard. However, in addition to safety concerns, using the
burners in the smaller size room is awkward. Only one laboratory in the
country uses this configuration. Therefore, the Commission decided to
propose only the two configurations.
4. Test Criteria
The proposed standard establishes two test criteria that the
specimen must meet to pass the test. The peak rate of heat release must
not exceed 200 kW at any time during the 30 minute test, and the total
heat release must not exceed 15 MJ during the first 10 minutes of the
test. [2&8]
Setting the peak rate of heat release limit at 200 kW (during the
30 minute test) ensures a less flammable mattress, reducing the
contribution from the mattress, while taking into account that
bedclothes and other room contents are likely to contribute to the
fire. Numerous technologically feasible mattress designs are available
that can meet the 200 kW criterion. Limiting the peak rate of heat
release represents a significant improvement in performance compared to
the 16 CFR part 1632 cigarette ignition standard for mattresses and
will have the most impact on available escape time. A peak rate of heat
release lower than 200 kW could limit the mattress design approaches
that would meet the standard, thus increasing costs. [2&8] We note that
California's TB 603 also prescribes a 200 kW peak rate of heat release.
The proposed standard requires that the total heat release in the
first 10 minutes of the test must not exceed 15 MJ. This early limit
ensures that the mattress will have little involvement in the fire
initially and provides a substantial increase in escape time by slowing
the rate of fire growth and severity. The mattress's initial
performance is important because if the mattress becomes significantly
involved in the early stages of the fire, this will greatly limit the
time a person has to escape. [2]
The proposed 15 MJ limit in the first 10 minutes takes into account
that bedclothes, and possibly other items, will be burning during this
initial period and will contribute significantly to the fire. The
Commission believes that the types of ticking (i.e, the outermost
fabric or material that covers the mattress) currently used on
mattresses can continue to be used with the 15 MJ/10 minute criteria.
[2] This will allow manufacturers considerable flexibility in their
mattress designs because they should be able to change tickings without
affecting the mattresses performance under the test method, except in
the unusual case where the ticking itself is part of the fire
resistance design.
California's TB 603 prescribes a 25 MJ limit in the first 10
minutes of the test. However, NIST research, supported by fire
modeling, has shown that untenable fire conditions can occur in a room
from a fire producing 25 MJ in the first 10 minutes of a test. This
represents the total contribution from all possibly involved items.
That is, a fire that reaches a size of 25 MJ within 10 minutes could
limit a person's ability to escape the room. According to the mattress
industry and available test data, there are numerous technologically
feasible approaches to mattress designs for meeting the proposed 15 MJ
/first 10 minute limit. [2]
The 30 minute test duration is related to, but not equivalent to,
the estimated time required to permit discovery of the fire and allow
escape under typical fire scenarios. A mattress complying with the
proposed criteria under the 30 minute test is estimated to provide an
adequate time for discovery of and escape from the fire under certain
conditions or assuming the bedclothes do not contribute to the extent
of posing a hazardous condition early in the fire. Compared to current
scenarios, this is a substantial increase in estimated escape time. The
effectiveness of the estimated escape time is based on timely escape
from the potentially hazardous conditions. [2&3]
Multiple test results indicate that a large number of mattress
designs (using a range of fire retardant barrier technologies) can
perform well in tests with gas burners for 30 minutes. Many of the
tested designs are able to meet the proposed test criteria for 30
minutes, but perform erratically after 30 minutes. The number of
failures, test variability, and performance unreliability increases
after 30 minutes. A substantial range of technologically feasible and
viable solutions and design choices exist that meet the proposed test
criteria for 30 minutes. [2] We note that California's TB 603 also
includes a 30 minute test duration.
The Commission considered proposing a 60 minute test duration.
However, as discussed above, after 30 minutes, test variability
increases, costs increase, and substantially fewer technologically
feasible design approaches are available to meet the test. Most
importantly, it is unclear from available data that much additional
benefit would accrue with a 60 minute test.
5. Prototype Testing
The proposed standard requires, with certain exceptions, that
mattress manufacturers must test specimens representative of their
mattress/set prototype (design) before introducing a mattress/set into
commerce. Mattresses then produced based on the prototype mattress must
be identical in all material aspects of their components, materials,
and method of construction to the prototype. The term ``manufacturer''
is defined as ``an individual plant or factory at which mattresses and/
or mattress and foundation sets are manufactured or assembled.'' The
definition includes importers. As in the existing mattress standard (16
CFR part 1632), this definition refers to the establishment where the
mattress is produced or assembled, not the company. Thus, the plant or
factory producing or assembling the mattress/set is required to conduct
prototype testing. This is also true for importers. However, there are
three exceptions to this requirement.
A manufacturer is allowed to sell a mattress/set based on a
prototype that has not been tested if the prototype differs from a
qualified prototype (one that has been tested and meets the criteria)
only with respect to: (1) The mattress/foundation size (e.g twin,
queen, king etc.); (2) the ticking, unless the qualified ticking has
characteristics that are designed to improve the mattress's test
performance; and/or (3) any other component, material or method of
construction, provided that the manufacturer can show, on an
objectively reasonable basis, that such change will not cause the
prototype to exceed the specified test criteria. The third numbered
option allows a manufacturer to construct and test a ``worst case''
prototype and rely on it to cover a range of related designs without
having to perform additional testing. If a manufacturer chooses to take
this approach, he/she must maintain records documenting that the
change(s) will not cause the prototype to exceed the test criteria (see
Sec. 1633.11(b)(4) of the proposed rule).
When conducting prototype testing, the manufacturer must test a
minimum of three specimens of the prototype in accordance with the test
method
[[Page 2475]]
described, and all of the mattresses/sets must meet both of the test
criteria discussed above. If any one prototype specimen that the
manufacturer tests fails the specified criteria, the prototype is not
qualified (even if the manufacturer chooses to test more than three
specimens).
The Commission believes that three specimens is the appropriate
minimum number for testing. Numerous research studies have typically
used replicates of three for tests using the developed gas burners.
This is also the number industry has generally used as it has
researched and developed options for meeting the requirements of
California's TB 603. Preliminary analysis of the inter-laboratory study
also indicates that three replicates are appropriate to accurately
characterize mattress performance. [2] Moreover, because small changes
in mattresses' construction or components can affect their
flammability, testing more than one mattress will provide a better
indication of their performance. [1]
6. Pooling
The proposed standard allows for one or more manufacturers to rely
on a given prototype. Under this approach, one manufacturer would
conduct (or cause to be conducted) the full prototype testing required
(testing three prototype specimens), obtaining passing results, and the
other manufacturer(s) may then produce mattresses/sets represented by
that prototype so long as they conduct one confirming test on a
specimen they produce. If the mattress/set fails the confirming test,
the manufacturer must take corrective measures, and then perform a new
confirmation test that must meet the test criteria. If a confirmation
test specimen fails to meet the test criteria, the manufacturer of that
specimen must also notify the manufacturer of the pooled prototype
about the test failure. Pooling may be used by two or more plants
within the same firm or by two or more independent firms. As discussed
in the initial regulatory flexibility analysis, pooling should reduce
testing costs for smaller companies. Once they have conducted a
successful confirmation test, pooling firms can produce mattresses
based on a pooled prototype and may continue to do as long as any
changes to the mattresses based on the pooled prototype are limited to
the three discussed above: (1) Size of the mattress/foundation; (2) the
ticking, unless the qualified ticking has characteristics that are
designed to improve the mattress's test performance, and/or (3) any
component, material or method of construction that the manufacturer can
show (on an objectively reasonable basis) will not cause the prototype
to exceed the specified test criteria.
7. Quality Assurance Requirements
Research and testing indicates that small variations in
construction of a mattress/set (e.g. missed stitching around the side
of the mattress) can affect the fire performance of a mattress.
Therefore, the proposed standard contains strict requirements for
quality assurance. Each manufacturer must implement a quality assurance
program to ensure that the mattresses/sets it produces are identical in
all material respects to the prototype on which they are based. This
means that at a minimum, manufacturers must: (1) Have controls in place
on components and materials to ensure that they are identical to those
used in the prototype; (2) designate a production lot that is
represented by the prototype; and (3) inspect mattresses/sets produced
for sale. The Commission is not requiring manufacturers to conduct
testing of production mattresses. However, the Commission recognizes
the value of such testing as part of a quality assurance program.
Therefore, the Commission encourages manufacturers to conduct random
testing of mattresses/sets that are produced for sale.
8. Recordkeeping
The proposed standard requires manufacturers to maintain certain
records to document compliance with the standard. This includes records
concerning prototype testing, pooling and confirmation testing, and
quality assurance procedures and any associated testing. The required
records must be maintained for as long as mattresses/sets based on the
prototype are in production and must be retained for three years
thereafter.
The purpose of these recordkeeping requirements is to enable
manufacturers to keep track of materials, construction methods and
testing. Thus, if a manufacturer produced a mattress/set that failed to
meet the test criteria, he/she should be able to use the records to
determine the prototype on which the failing mattress was based, as
well as the components and method of construction that were used. This
information would help the manufacturer correct the problem that caused
the mattress to fail the test criteria.
9. Other Requirements: Labeling, One of a Kind Exemption, and Policy on
Renovation of Mattresses
Under the proposed standard, each mattress/set must bear a
permanent label stating the name and location of the manufacturer, the
month and year of manufacture, the model identification, prototype
identification number, and a certification that the mattress complies
with the standard. By placing the certification on the mattress, the
manufacturer is attesting that the specific mattress would comply with
the test criteria if tested.
The proposed standard allows an exemption for a one-of-a-kind
mattress/set if it is manufactured in response to a physician's written
prescription or manufactured in accordance with comparable medical
therapeutic specifications.
Subpart C of the proposed standard restates the policy
clarification on renovation of mattresses that is in Subpart C of the
existing mattress standard (16 CFR Part 1632). The policy statement
informs the public that mattresses renovated for sale are considered by
the Commission to be newly manufactured for purposes of the
requirements of the proposed standard.
H. Effectiveness Evaluation
To determine the potential effectiveness of the proposed standard,
CPSC staff conducted an effectiveness evaluation, focusing primarily on
reduction of deaths and injuries. The staff's analysis is explained in
detail in the memorandum ``Residential Fires Involving Mattresses and
Bedding.'' [3] The evaluation was based primarily on review of CPSC
investigation reports that provided details of the occupants'
situations and actions during the fire. Staff reviewers identified
criteria that affected the occupants' ability to escape the fires they
had experienced. The staff used these criteria to estimate percentage
reductions in deaths and injuries expected to occur under the much less
severe fire conditions anticipated with improved designs of mattresses
that would comply with the proposed standard. The staff then applied
these estimated reductions to national estimates of mattress/bedding
fire deaths and injuries to estimate numbers of deaths and injuries
that could be prevented with the proposed standard. [3]
As stated in section D of this document, the most recent national
fire loss estimates indicated that mattresses and bedding were the
first items to ignite in 19,400 residential fires attended by the fire
service annually
[[Page 2476]]
during 1995--1999. These fires resulted in 440 deaths, 2,230 injuries
and $273.9 million in property loss each year. Of these, the staff
considers an estimated 18,500 fires, 440 deaths, 2,160 injuries, and
$259.5 million property loss annually to be addressable by the proposed
standard (i.e., of the type that the proposed standard could affect
based on the characteristics of the fire). [3]
Overall, CPSC staff estimates that the proposed standard may be
expected to prevent 80 to 86 percent of the deaths and 86 to 92 percent
of the injuries presently occurring in addressable mattress/bedding
fires attended by the fire service. Applying these percentage
reductions to 1998-2002 estimates of addressable mattress/bedding fire
losses, staff estimates potential reductions of 310 to 330 deaths and
1,660 to 1,780 injuries annually in fires attended by the fire service
when all existing mattresses have been replaced with mattresses meeting
the new standard. There may also be reductions in property damage
resulting from the proposed standard, but data are not sufficient for
the staff to quantify this impact. [3]
I. Inter-Laboratory Study
An inter-laboratory study was conducted with the support of the
SPSC, NIST, and participating laboratories to explore the sensitivity,
repeatability, and reproducibility of the NIST test method. All of the
participating labs conducted multiple tests of eight different mattress
designs. The mattress designs varied critical elements (e.g., the
barrier--sheet or high-loft, the type of mattress--single or double-
sided) and the style of mattress (e.g., tight or pillow top). [2]
Preliminary analysis of the data does not suggest either
unreasonable sensitivities (i.e., significantly different test results
when minor variations in test procedure are made) or practical
limitations in the test protocol. The preliminary analysis suggests
that some mattress designs perform more consistently than others. The
type of barrier appears to have a significant impact on the performance
and repeatability of performance of all mattress designs tested.
However, the uniformity of other components and the manufacturing
process can also affect the variability in fire performance. [2]
The inter-lab tests also appear to confirm earlier observations
that mattresses constructed with currently available barrier
technologies are able to limit the fire severity for a substantial but
not indefinite time. Most of the tested mattress designs could meet the
proposed requirements if the test ended at 30 minutes, but appeared to
perform erratically after 30 minutes. [2]
The preliminary analysis, supported by earlier data, suggests that
significant variability exists among currently available mattress
designs. Although products appear to be moving toward consistency,
manufacturers clearly need to control components, materials, and
methods of construction. Thus, quality assurance measures, as required
in the proposed rule, are important. [2]
The inter-lab study was only recently completed, and the discussion
above is based on the staff's preliminary analysis of the results. A
final report on the inter-lab study is expected by the end of 2004 and
will be available to the public.
J. Response to Comments On the ANPR
On October 11, 2001, the Commission published an ANPR in the
Federal Register. 66 FR 51886. During the comment period, the
Commission received sixteen written comments from businesses,
associations and interested parties representing various segments of
the mattress and bedding industries. After the close of the comment
period, the Commission received a number of additional comments,
including one from the California Bureau of Home Furnishings and
Thermal Insulation urging the Commission to adopt California's TB 603
as a federal standard. Significant issues raised by all of these
comments are discussed below. [14&15]
Mattress Comments
1. Comment. Commenters agree that the hazards associated with
mattress fires appear to be clearly identified. All of the commenters
support the need for an open flame standard for mattresses and
initiation of federal rulemaking.
Response. CPSC agrees that mattress and bedding fires continue to
be one of the major contributors to residential fire deaths and
civilian injuries among products within CPSC's jurisdiction. The most
recent national fire loss estimates indicate that mattresses and
bedding were the first items to ignite in 19,400 residential fires
attended by the fire service annually during 1995--1999. These fires
resulted in an estimated 440 deaths, 2,230 injuries, and $273.9 million
property loss annually. In these fires, the bedclothes are most
frequently ignited by a small open flame source. The burning bedding
then creates a large open-flame source igniting the mattress and
creating dangerous flashover conditions, the point when the entire room
and its contents are ignited simultaneously by radiant heat.
The proposed standard is designed to address the identified hazard
of flashover resulting from open flame ignition of mattresses, usually
from burning bedclothes. Under the proposed standard, mattresses and
mattress/sets are exposed to gas burners, simulating burning
bedclothes. Mattresses are required to meet two performance criteria
that minimize the possibility of or delay flashover for a period of
time. Mattresses must not exceed 200 kW peak heat release rate during
the 30 minute test, and the total heat released must be less than 15 MJ
for the first 10 minutes of the test.
2. Comment. Most commenters endorsed the direction of the mattress
flammability test development research underway at NIST and encouraged
the CPSC to issue a technologically practicable, reasonable standard.
More recent commenters suggest California TB 603 be adopted as the
federal standard.
Response. CPSC agrees with the technical approach suggested by the
NIST research. A majority of the commenters agreed that preventing
flashover from mattress fires would appropriately address the risk and
that a full scale test with an ignition source comparable to burning
bedclothes could achieve that objective. They strongly supported the
NIST approach and discouraged the adoption of any existing standards.
Before California's adoption of TB 603, one commenter suggested
using a modification of the small-scale British test, BS 5852, for
smoldering and flaming ignition of upholstered furniture seating
composites. However, a full-scale rather than small-scale test is
generally considered the most reliable method for measuring performance
of a product that contains many materials in a complex construction,
such as a mattress. NIST research confirmed that a full-scale test of
the mattress was needed to measure its performance when exposed to
burning bedclothes or the representative set of gas burners. NIST's
comprehensive, scientifically based research program was designed to
address the open-flame ignition of mattresses and bedclothes under
controlled conditions closely resembling those of real-life fire
scenarios. The program focused on understanding the dynamics of fires
involving mattress and bedclothing assemblies and on developing an
appropriate and technologically practicable methodology to effectively
measure the hazard.
NIST subsequently prepared a test method which the state of
California incorporated into their TB 603,
[[Page 2477]]
``Requirements and Test Procedure for Resistance of a Mattress/Box
Spring Set to a Large Open-Flame'' in 2004. The proposed standard is
also based on the test method developed by NIST. Research on mattress
and bedclothes fires conducted by NIST for CPSC and the industry
provides the basis for the test criteria specified in the proposed
standard. Manufacturers and suppliers have demonstrated that mattress
designs complying with these performance criteria and suitable for the
residential market can be produced.
3. Comment. One commenter requested the exclusion of certain
product categories, such as mattresses used for therapeutic reasons and
in healthcare environments, from an open flame standard.
Response. The proposed standard includes all mattresses, including
those used in or as part of upholstered furniture items. ``One-of-a-
kind'' mattresses and foundations are defined as physician prescribed
mattresses to be used in connection with the treatment or management of
a named individual's physical illness or injury. These products may be
exempted from testing under the proposed standard in accordance with
the rules established by the Commission. The proposed standard requires
them to be permanently labeled with a warning statement indicating that
the mattress and foundation have not been tested under the standard and
may be subject to a large fire if exposed to an open flame.
4. Comment. In October 2003 the California Bureau of Home
Furnishings (CBHF) urged the Commission to adopt their new standard, TB
603. Subsequently, a number of commenters expressed written support for
adopting the TB 603 test methodology and performance criteria.
CBHF claimed that harmonization of California and federal standards
would avoid a number of potential problems. They noted potential
problems such as possible federal preemption and negative impacts on
interstate commerce. Since TB 603 is a newly developed methodology,
CBHF suggested that an inter-laboratory study be conducted before a
potential adoption of TB 603 by CPSC. They noted that data obtained
from an inter-laboratory study would verify the credibility of the test
method.
Response. An inter-laboratory study was conducted with the support
of SPSC, NIST, CBHF, and other participating laboratories to collect
additional data and confirm the test protocol developed by NIST. A
number of laboratories participated in the study to evaluate
sensitivity, repeatability, and reproducibility of the test protocol.
While the final report is not yet available, preliminary analysis of
the data does not suggest either unreasonable sensitivities or
practical limitations in the test protocol.
The Commission's proposed standard is similar to California's TB
603. The proposed standard and TB 603 use the same test method and
limit the peak rate of heat release of a mattress or mattress/
foundation to 200 kW. TB 603 also limits the size of the fire produced
in the first 10 minutes of the test to 25 MJ. According to NIST
research, untenable fire conditions could occur in a room from a fire
of this size. Unlike TB 603, the staff's draft proposed standard
requires that the mattress contribute no more than 15 MJ to the early
fire scenario. This ensures that the mattress will have little
involvement in the fire for the specified period of time. This lower
limit partially compensates for the contribution of an uncertain
combination of burning bedclothes on the bed, helping to preserve
tenable conditions for egress.
5. Comment. Two commenters recognize the sophistication and
complexity of the test method used in California TB 603 and potentially
in a federal standard. They suggest that CPSC explore laboratory
accreditation programs to insure test labs are properly qualified to
conduct this complex test.
Response. The interlaboratory study may identify laboratory
practices, equipment, and other related factors that must be controlled
to ensure consistent and accurate test results. The report and findings
of the study will be available to the public; and appropriate guidance
can be provided to interested laboratories. While accrediting test
laboratories is not a CPSC function, the Commission supports industry
and commercial laboratory development of such a program.
6. Comment. A commenter expressed concerns about environmental
impact and consumer sensitivity to flame retardants that may be used in
mattresses, whether topically applied or integrated into fibers. The
commenter recommends requiring a label that discloses the use of flame
retardants in the mattress and provides a source of more specific
information.
Response. Mattress fire performance can be improved by
incorporating fire retardant chemicals into component materials or by
using materials that are inherently fire resistant. Flame retardant
chemicals are already widely used in other applications. More than one
billion pounds of different flame retardant chemicals are currently
used annually in the United States, including applications in many
consumer products. There are also flame resistant (FR) materials that
may be used for mattress barriers that have other consumer product
applications. For example, melamine resins, which can be used in FR
barriers, are also used in many laminated counter tops.
Based on available data, the Commission believes that there are
available options for meeting the standard without posing an
unacceptable health risk to consumers or significantly affecting the
environment. Moreover, as described in section N of this preamble, even
if a method used by some manufacturers to meet the standard were
suspected of posing an unacceptable risk, there would be regulatory and
other mechanisms that can be used to control that particular method.
The staff is planning to conduct migration and exposure studies on
various FR chemicals that could be used to meet the standard.
The commenter suggested labeling of chemically treated components
as a possible requirement of the standard, to inform consumers of the
materials used. The Commission questions whether such information would
be of practical value to consumers. Simply stating that a mattress
component has been chemically treated does not indicate to the consumer
whether the mattress poses any health risk or not. The proposed
standard requires manufacturers to maintain records specifying details
of all materials, including flame retardant treatments applied and
inherently flame resistant materials, used in each mattress design
(prototype). This will allow identification of relevant mattresses and
mattress/sets if an unacceptable risk is identified.
7. Comment. Another commenter recommended test provisions in the
standard that address the long term durability of the flame retardant
chemicals used in mattresses to ensure they continue to meet the fire
performance requirements.
Response. It is expected that most manufacturers will use some kind
of flame resistant barrier material to protect the mattress components
with the greatest combustible fuel load from exposure to an open flame.
Flame resistant barriers for mattresses may take several forms,
including ticking fabrics, woven and non-woven interlinings, and
battings. It is likely that these barriers will be made with an
inherently flame resistant fiber (e.g., para-aramid or fiberglass) or
by treatment with flame retardant chemicals, many of which are
incorporated within the fiber, foam, or
[[Page 2478]]
other material. At this point in the development of technologies that
may be used to meet TB 603 or the proposed standard, the staff has seen
no evidence that suggests that changes in these materials over time
will occur or affect fire performance.
8. Comment. One commenter expressed concerns about the potentially
severe economic impact of a federal regulation, similar to TB 603, on
small businesses.
Response. The Commission acknowledges that the cost of testing,
record keeping, and quality control/quality assurance programs could be
disproportionately higher for small businesses. While these costs are
estimated to be a little over one dollar per mattress per year for
average-sized establishments, they could be substantially higher for
some small mattress producers. The proposed standard, however, allows
manufacturers to pool their prototype qualification and testing, and
thus these costs can be mitigated. Moreover, if manufacturers produce
mattress/set constructions for longer than a year or use a worst-case
prototype to represent other mattress constructions, these costs will
be lower. It is also expected that some barrier suppliers or
independent laboratories would be willing to do the testing and quality
control/assurance programs for small producers in exchange for a small
charge. Therefore, the proposed standard is expected to minimize the
impact on small businesses, while maintaining the benefits resulting
from the standard.
The Commission is requesting comments from small businesses on the
expected economic impact of the requirements of the proposed standard
and the proposed effective date of 12 months after publication of the
final rule in the Federal Register.
9. Comment. One commenter reported that some juvenile or crib
mattresses, while meeting the 200 kW peak rate of heat release
requirement, produce large amounts of flaming droplets that have the
potential for spreading flames beyond the mattress. TB 603 does not
address these flaming droplets.
Response. The objective of the proposed standard is to reduce the
size of mattress/bedding fires and, thereby reduce the likelihood of or
delay the development of flashover conditions in the room. Based on
research conducted by NIST, performance criteria were developed to
limit the size of the mattress fire and reduce the likelihood of it
involving other objects in the room. The Commission believes that,
while the proposed standard may be less effective in isolated
circumstances, the objective of the standard can be met with the
performance criteria specified: maximum 200 kW peak heat release rate
during the 30-minute test and maximum 15 MJ total heat release in the
first 10 minutes of the test. Laboratory tests of currently marketed
crib mattresses of which the Commission is aware show unacceptable
performance in one or both of these fire performance measures. Like
full-size mattresses, these crib mattresses would also need to be
improved to meet the requirements of the proposed standard.
10. Comment. One commenter suggested that a 60-minute test duration
is needed in the standard to allow for fire and rescue workers to
respond and help occupants escape.
The commenter notes that the longer test time will allow emergency
responders to assist vulnerable citizens to escape fires involving
mattresses and bedding. They report that response times can vary widely
among local circumstances, from approximately 16 minutes to an hour or
more.
Response. To estimate the proposed standard's potential
effectiveness, the staff reviewed in-depth investigations that provided
detailed information about fires that ignited mattresses and bedding,
details of the occupants' situation, and occupants' actions during the
fire. Most investigations also included documentation from the fire
department that attended the fire. The in-depth investigations involved
fires occurring during 1999-2004, and included a total of 195 deaths
and 205 injuries. In some of these cases, even with traditional
mattresses and bedding, other members of the household present at the
time of the fire and emergency responders arriving w