Notice of Requests for Approval of an Alternative Means of Emission Limitation at Chevron Phillips Chemical Company LP, 16392-16399 [2017-06597]
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Federal Register / Vol. 82, No. 63 / Tuesday, April 4, 2017 / Notices
and the Regulations under the NGA (18
CFR 157.10). A person obtaining party
status will be placed on the service list
maintained by the Secretary of the
Commission and will receive copies of
all documents filed by the applicant and
by all other parties. A party must submit
7 copies of filings made with the
Commission and must mail a copy to
the applicant and to every other party in
the proceeding. Only parties to the
proceeding can ask for court review of
Commission orders in the proceeding.
However, a person does not have to
intervene in order to have comments
considered. The second way to
participate is by filing with the
Secretary of the Commission, as soon as
possible, an original and two copies of
comments in support of or in opposition
to this project. The Commission will
consider these comments in
determining the appropriate action to be
taken, but the filing of a comment alone
will not serve to make the filer a party
to the proceeding. The Commission’s
rules require that persons filing
comments in opposition to the project
provide copies of their protests only to
the party or parties directly involved in
the protest.
Persons who wish to comment only
on the environmental review of this
project should submit an original and
two copies of their comments to the
Secretary of the Commission.
Environmental commentors will be
placed on the Commission’s
environmental mailing list, will receive
copies of the environmental documents,
and will be notified of meetings
associated with the Commission’s
environmental review process.
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documents on all other parties.
However, the non-party commentors
will not receive copies of all documents
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Commission (except for the mailing of
environmental documents issued by the
Commission) and will not have the right
to seek court review of the
Commission’s final order.
The Commission strongly encourages
electronic filings of comments, protests
and interventions in lieu of paper using
the ‘‘eFiling’’ link at https://
www.ferc.gov. Persons unable to file
electronically should submit an original
and 5 copies of the protest or
intervention to the Federal Energy
Regulatory Commission, 888 First Street
NE., Washington, DC 20426.
There is an ‘‘eSubscription’’ link on
the Web site that enables subscribers to
receive email notification when a
document is added to a subscribed
docket(s). For assistance with any FERC
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Online service, please email
FERCOnlineSupport@ferc.gov, or call
(866) 208–3676 (toll free). For TTY, call
(202) 502–8659.
Comment Date: 5:00 p.m. Eastern
Time on April 19, 2017.
Dated: March 29, 2017.
Kimberly D. Bose,
Secretary.
[FR Doc. 2017–06603 Filed 4–3–17; 8:45 am]
BILLING CODE 6717–01–P
DEPARTMENT OF ENERGY
Federal Energy Regulatory
Commission
[Docket No. EL17–54–000]
Dynegy Marketing and Trade, LLC
Illinois Power Marketing Company v.
Midcontinent Independent System
Operator, Inc.; Notice of Complaint
Take notice that on March 28, 2017,
pursuant to sections 206 and 306 of the
Federal Power Act,1 and Rule 206 of the
Federal Energy Regulatory
Commission’s (Commission) Rules of
Practice and Procedure,2 Dynegy
Marketing and Trade, LLC and Illinois
Power Marketing Company
(collectively, Complainants), filed a
formal complaint against Midcontinent
Independent System Operator, Inc.,
(MISO or Respondent) alleging that
MISO has violated its tariff by charging
Complainants duplicative congestion
and losses costs for pseudo-tied
resources through Financial Schedules,
as more fully explained in the
complaint.
Complainants certify that copies of
the complaint were served on the
contacts for Respondent, as listed on the
Commission’s list of Corporate Officials.
Any person desiring to intervene or to
protest this filing must file in
accordance with Rules 211 and 214 of
the Commission’s Rules of Practice and
Procedure (18 CFR 385.211, 385.214).
Protests will be considered by the
Commission in determining the
appropriate action to be taken, but will
not serve to make protestants parties to
the proceeding. Any person wishing to
become a party must file a notice of
intervention or motion to intervene, as
appropriate. The Respondent’s answer
and all interventions, or protests must
be filed on or before the comment date.
The Respondent’s answer, motions to
intervene, and protests must be served
on the Complainants.
The Commission encourages
electronic submission of protests and
1 16
2 18
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U.S.C. 824e and 825e (2012).
CFR 385.206 (2016).
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interventions in lieu of paper using the
‘‘eFiling’’ link at https://www.ferc.gov.
Persons unable to file electronically
should submit an original and 5 copies
of the protest or intervention to the
Federal Energy Regulatory Commission,
888 First Street NE., Washington, DC
20426.
This filing is accessible on-line at
https://www.ferc.gov, using the
‘‘eLibrary’’ link and is available for
electronic review in the Commission’s
Public Reference Room in Washington,
DC There is an ‘‘eSubscription’’ link on
the Web site that enables subscribers to
receive email notification when a
document is added to a subscribed
docket(s). For assistance with any FERC
Online service, please email
FERCOnlineSupport@ferc.gov, or call
(866) 208–3676 (toll free). For TTY, call
(202) 502–8659.
Comment Date: 5:00 p.m. Eastern
Time on April 17, 2017.
Dated: March 29, 2017.
Kimberly D. Bose,
Secretary.
[FR Doc. 2017–06605 Filed 4–3–17; 8:45 am]
BILLING CODE 6717–01–P
ENVIRONMENTAL PROTECTION
AGENCY
[EPA–HQ–OAR–2014–0738; FRL–9960–13–
OAR]
Notice of Requests for Approval of an
Alternative Means of Emission
Limitation at Chevron Phillips
Chemical Company LP
Environmental Protection
Agency (EPA).
ACTION: Notice; request for comments.
AGENCY:
This action provides public
notice and solicits comment on the
alternative means of emission limitation
(AMEL) request from Chevron Phillips
Chemical Company LP (CP Chem),
requested under the Clean Air Act
(CAA), to operate a multi-point ground
flare (MPGF) at their new ethylene plant
in Baytown, Texas, and an MPGF at
their new polyethylene plant in Old
Ocean, Texas.1 In this action, the
Environmental Protection Agency (EPA)
is soliciting comment on all aspects of
this request for an AMEL and the
alternative operating conditions that
would be sufficient to achieve a
reduction in emissions of volatile
organic compounds (VOC) and
SUMMARY:
1 The MPGF at both the ethylene plant and
polyethylene plant will utilize pressure-assisted
burners on all the high pressure stages; however,
the first two stages on the MPGF at the polyethylene
plant will also be steam-assisted.
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hazardous air pollutants (HAP) at least
equivalent to the reduction in emissions
required by various standards in 40 CFR
parts 60, 61, and 63 that apply to
emission sources controlled by these
MPGFs. These standards incorporate the
design and operating requirements for
flares in the General Provisions to parts
60 and 63, respectively, as part of the
emission reduction requirements. The
proposed MPGF designs cannot meet
the velocity requirements in these
General Provisions; however, CP Chem’s
request for an alternative means of
emission limit demonstrates that the
alternative proposed would achieve at
least equivalent emissions reductions as
flares that meet the standards in the
General Provisions.
DATES: Comments. Comments must be
received on or before May 4, 2017,
unless a public hearing is requested by
April 10, 2017. If a public hearing is
requested on this action, written
comments must be received by May 19,
2017.
Public Hearing. If a public hearing is
requested by April 10, 2017, we will
hold a public hearing on April 19, 2017,
from 1:00 p.m. [Central Daylight Time]
to 5:00 p.m. [Central Daylight Time] in
the Houston, Texas, area. We will
provide details on the public hearing, if
one is requested, on our Web site at:
https://www3.epa.gov/ttn/atw/
groundflares/groundflarespg.html. The
EPA does not intend to publish another
notice in the Federal Register
announcing any updates on the request
for a public hearing, so please be sure
to check the Web site above for updates.
Again, a public hearing will not be held
unless someone specifically requests
that the EPA hold a public hearing
regarding these requests. Please contact
Ms. Virginia Hunt, Sector Policies and
Programs Division (E143–01), Office of
Air Quality Planning and Standards,
U.S. Environmental Protection Agency,
Research Triangle Park, NC 27711;
telephone number: (919) 541–0832;
email address: hunt.virginia@epa.gov; to
request a public hearing, to register to
speak at the public hearing or to inquire
as to whether a public hearing will be
held. The last day to pre-register in
advance to speak at the public hearing
will be April 17, 2017.
ADDRESSES: Comments. Submit your
comments, identified by Docket ID No.
EPA–HQ–OAR–2014–0738, at https://
www.regulations.gov. Follow the online
instructions for submitting comments.
Once submitted, comments cannot be
edited or removed from Regulations.gov.
The EPA may publish any comment
received to its public docket. Do not
submit electronically any information
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you consider to be Confidential
Business Information (CBI) or other
information whose disclosure is
restricted by statute. Multimedia
submissions (audio, video, etc.) must be
accompanied by a written comment.
The written comment is considered the
official comment and should include
discussion of all points you wish to
make. The EPA will generally not
consider comments or comment
contents located outside of the primary
submission (i.e., on the Web, cloud, or
other file sharing system). For
additional submission methods, the full
EPA public comment policy,
information about CBI or multimedia
submissions, and general guidance on
making effective comments, please visit
https://www2.epa.gov/dockets/
commenting-epa-dockets.
Instructions. Direct your comments to
Docket ID No. EPA–HQ–OAR–2014–
0738. The EPA’s policy is that all
comments received will be included in
the public docket without change and
may be made available online at https://
www.regulations.gov, including any
personal information provided, unless
the comment includes information
claimed to be CBI or other information
whose disclosure is restricted by statute.
Do not submit information that you
consider to be CBI or otherwise
protected through https://
www.regulations.gov or email. The
https://www.regulations.gov Web site is
an ‘‘anonymous access’’ system, which
means the EPA will not know your
identity or contact information unless
you provide it in the body of your
comment. If you send an email
comment directly to the EPA without
going through https://
www.regulations.gov, your email
address will be automatically captured
and included as part of the comment
that is placed in the public docket and
made available on the Internet. If you
submit an electronic comment, the EPA
recommends that you include your
name and other contact information in
the body of your comment and with any
disk or CD–ROM you submit. If the EPA
cannot read your comment due to
technical difficulties and cannot contact
you for clarification, the EPA may not
be able to consider your comment.
Electronic files should not include
special characters or any form of
encryption and be free of any defects or
viruses. For additional information
about the EPA’s public docket, visit the
EPA Docket Center homepage at https://
www.epa.gov/dockets.
Docket. The EPA has established a
docket for this rulemaking under Docket
ID No. EPA–HQ–OAR–2014–0738. All
documents in the docket are listed in
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the Regulations.gov index. Although
listed in the index, some information is
not publicly available, e.g., CBI or other
information whose disclosure is
restricted by statute. Certain other
material, such as copyrighted material,
is not placed on the Internet and will be
publicly available only in hard copy.
Publicly available docket materials are
available either electronically in
Regulations.gov or in hard copy at the
EPA Docket Center, Room 3334, EPA
WJC West Building, 1301 Constitution
Avenue NW., Washington, DC. The
Public Reading Room is open from 8:30
a.m. to 4:30 p.m., Monday through
Friday, excluding legal holidays. The
telephone number for the Public
Reading Room is (202) 566–1744, and
the telephone number for the EPA
Docket Center is (202) 566–1742.
FOR FURTHER INFORMATION CONTACT: For
questions about this action, contact Mr.
Andrew Bouchard, Sector Policies and
Programs Division (E143–01), Office of
Air Quality Planning and Standards
(OAQPS), U.S. Environmental
Protection Agency, Research Triangle
Park, North Carolina 27711; telephone
number: (919) 541–4036; fax number:
(919) 541–0246; and email address:
bouchard.andrew@epa.gov.
SUPPLEMENTARY INFORMATION:
Acronyms and Abbreviations. We use
multiple acronyms and terms in this
notice. While this list may not be
exhaustive, to ease the reading of this
notice and for reference purposes, the
EPA defines the following terms and
acronyms here:
AMEL alternative means of emission
limitation
Btu/scf British thermal units per standard
cubic foot
CAA Clean Air Act
CBI confidential business information
CFR Code of Federal Regulations
CP Chem Chevron Phillips Chemical
Company LP
EPA Environmental Protection Agency
Eqn equation
HAP hazardous air pollutants
HP high pressure
LFL lower flammability limit
LFLcz lower flammability limit of
combustion zone gas
LFLvg lower flammability limit of flare vent
gas
MPGF multi-point ground flares
NESHAP national emission standards for
hazardous air pollutants
NHV net heating value
NHVcz net heating value of combustion
zone gas
NHVvg net heating value of flare vent gas
NSPS new source performance standards
OAQPS Office of Air Quality Planning and
Standards
scf standard cubic feet
VOC volatile organic compounds
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Organization of This Document. The
information in this notice is organized
as follows:
I. Background
A. Regulatory Flare Requirements and CP
Chem’s AMEL Request
II. Requests for AMEL
A. CP Chem’s Ethylene Plant
B. CP Chem’s Polyethylene Plant
C. Information Supporting CP Chem’s
MPGF AMEL Requests
III. AMEL for the Proposed MPGFs
IV. Request for Comments
I. Background
A. Regulatory Flare Requirements and
CP Chem’s AMEL Request
CP Chem submitted a complete MPGF
AMEL request, following the MPGF
AMEL framework that was published in
the Federal Register (see 81 FR 23480,
April 21, 2016), to the EPA on
November 28, 2016. CP Chem is seeking
an AMEL to operate an MPGF for use
during limited high-pressure
maintenance, startup, and shutdown
events, as well as during upset events at
their ethylene plant in Baytown, Texas.
In addition, CP Chem is seeking an
AMEL to operate an MPGF during
certain routine operations (i.e., the first
two stages only), as well as during
periods of maintenance, startup,
shutdown, and upset at their
polyethylene plant in Old Ocean, Texas
(see section II.B. below for more details).
In their request, CP Chem cited various
regulatory requirements in 40 CFR parts
60, 61, and 63 that will apply to the
flare vent gas streams that will be
collected and routed to their MPGF at
each of these two plants. See Table 1 for
a list of regulations, by subparts, that CP
Chem has identified as applicable to the
two plants described above. These new
source performance standards (NSPS)
and national emissions standards for
hazardous air pollutants (NESHAP)
require that flares subject to these
subparts meet the flare design and
operating requirements in the General
Provisions of part 60 and 63,
respectively (i.e., 40 CFR 60.18(b) and
63.11(b)). CP Chem is requesting that
the EPA approve an AMEL for the flare
requirements in these subparts.
TABLE 1—SUMMARY OF APPLICABLE RULES THAT MAY APPLY TO VENT STREAMS CONTROLLED BY MULTI-POINT
GROUND FLARES
CP Chem
ethylene plant
CP Chem
polyethylene
plant
Rule citation from Title 40 CFR that
allow for use of a flare
NSPS Subpart VV ...................
NSPS Subpart VVa .................
NSPS Subpart DDD ................
NSPS Subpart NNN ................
NSPS Subpart RRR ................
NESHAP Subpart FF ..............
NESHAP Subpart SS ..............
NESHAP Subpart UU ..............
NESHAP Subpart XX ..............
........................
X
........................
X
X
X
X
X
X
X
........................
X
........................
........................
........................
........................
........................
........................
NESHAP Subpart YY ..............
X
........................
NESHAP Subpart FFFF ..........
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Applicable rules with vent
streams going to control
device(s)
........................
X
60.482–10(d) .....................................
60.482–10a(d) ...................................
60.562–1(a)(1)(i)(C) ...........................
60.662(b) ...........................................
60.702(b) ...........................................
61.349(a)(2) .......................................
63.982(b) ...........................................
63.1034 ..............................................
63.1091 ..............................................
* Note—This
subpart
cross-references to NESHAP subpart FF
above.
Table 7 to § 63.1103(e) cross-references to NESHAP subpart SS
above.
63.2450(e)(2) .....................................
The provisions in each NSPS and
NESHAP cited above that ensure flares
meet certain specific requirements when
used to satisfy the requirements of the
NSPS or NESHAP were established as
work practice standards pursuant to
CAA sections 111(h)(1) or 112(h)(1). For
standards established according to these
provisions, CAA sections 111(h)(3) and
112(h)(3) allow the EPA to permit the
use of an AMEL by a source if, after
notice and opportunity for comment,2 it
is established to the Administrator’s
satisfaction that such an AMEL will
achieve emissions reductions at least
equivalent to the reductions required
under the CAA section 111(h)(1) or
112(h)(1) standard. As noted in Table 1,
many of the NSPS and NESHAP also
include specific regulatory provisions
allowing sources to request an AMEL.
CP Chem submitted an AMEL request
because their MPGFs are designed to
2 CAA section 111(h)(3) specifically requires that
the EPA provide an opportunity for a hearing.
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operate above the maximum permitted
velocity requirements for flares in the
General Provisions in 40 CFR parts 60
and 63. CP Chem provided information
that the MPGF designs they propose to
use at both sites will achieve a
reduction in emissions at least
equivalent to the reduction in emissions
for flares complying with these General
Provisions requirements. For further
information on CP Chem’s specific
AMEL request, see supporting materials
from CP Chem at Docket ID No. EPA–
HQ–OAR–2014–0738.
II. Requests for AMEL
A. CP Chem’s Ethylene Plant
CP Chem indicates in their MPGF
AMEL request that they plan to
construct and operate an MPGF at their
Cedar Bayou ethylene plant in Baytown,
Texas. This new ethylene plant will use
ethane as a feedstock and be able to
produce approximately 1.5 million
metric tons per year of ethylene. CP
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Provisions for alternative means of
emission limitation
60.484(a)–(f).
60.484a(a)–(f).
CAA section 111(h)(3).
CAA section 111(h)(3).
CAA section 111(h)(3).
61.353(a); also see 61.12(d).
CAA section 112(h)(3).
63.1021(a)–(d).
63.1097(b)(1).
63.1113.
63.2545(b)(1); also see 63.6(g).
Chem is proposing to use a staged flare
design to control emissions of VOC and
HAP from various process vents during
normal operations, as well as during
maintenance, startup, shutdown, and
upset operating conditions. During
normal operation and most of the
routine maintenance activities, CP
Chem will operate a low pressure steamassisted ground flare consisting of eight
Callidus MP4U burners. This low
pressure stage of the flare is not
specifically part of the AMEL request,
because this flare can comply with the
General Provisions requirements of 40
CFR 60.18(b) and 63.11(b), which are
cross-referenced in the applicable NSPS
and NESHAP provisions. CP Chem has
submitted an AMEL request to operate
the 17 high pressure (HP) stages (i.e., 16
stages plus one spare stage) of the MPGF
because the designed flaring scenarios
for when this portion of the MPGF will
be used (i.e., during limited HP
maintenance, startup, and shutdown
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events, as well as during upset events)
will exceed the maximum permitted
velocity requirements in the General
Provisions at 40 CFR 60.18(b) and 40
CFR 63.11(b). The HP stages will also
use Callidus MP4U burners and have
anywhere from 6 to 62 burners per stage
(see supporting materials from CP Chem
at Docket ID No. EPA–HQ–OAR–2014–
0738 for more details).
B. CP Chem’s Polyethylene Plant
CP Chem indicates in their MPGF
AMEL request that they also plan to
construct and operate an MPGF at their
new polyethylene plant that will be
located adjacent to their Sweeny
Chemical and Natural Gas Liquids
(NGL) Fractionation Plant in Old Ocean,
Texas. The polyethylene plant consists
of two polyethylene units, each capable
of producing 500,000 metric tons per
year of polyethylene products. CP Chem
is also proposing to use a staged flare
design scheme to control emissions of
VOC and HAP from various process
vents during normal operations, as well
as during maintenance, startup,
shutdown, and upset operating
conditions; however, the design, burner
type and configuration of this flare
differ from that of the MPGF at the
ethylene plant in a few key ways. First,
the low pressure stage of the flare will
have four steam-assisted Callidus LPExpert tip burners. Similar to the design
of CP Chem’s ethylene plant MPGF, this
low pressure stage is not specifically
part of the AMEL request as it can
comply with the flare General
Provisions requirements of 40 CFR
60.18(b) and 40 CFR 63.11(b). Second,
the MPGF will consist of 10 HP stages
(i.e., nine stages plus one spare stage),
with each stage using Callidus MP4U
burners. Lastly, unlike CP Chem’s
ethylene plant MPGF, the first two
stages of the HP side of this MPGF will
operate pressure-assisted burners that
will also be steam-assisted and control
emissions during certain routine
operations, as well as during periods of
startup, shutdown, maintenance, and
upset conditions. CP Chem indicates in
their AMEL request that this particular
control scheme was chosen due to
insufficient area in the plot plan to add
additional flare burners on the low
pressure side that could comply with
the maximum permitted velocity
requirements of 40 CFR 60.18(b) and 40
CFR 63.11(b). Thus, in order to account
for all potential routine flaring operation
scenarios, CP Chem will operate the first
two stages of the HP side of the MPGF
as flexible, or ‘‘swing’’ stages that can
operate in both a low pressure capacity
as well as high pressure capacity. These
first two stages will have a total of 18
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burners, which account for
approximately 10 percent of the total
number of flare burners on the HP side
of the MPGF being proposed for use by
CP Chem (see supporting materials from
CP Chem at Docket ID No. EPA–HQ–
OAR–2014–0738 for more details).
C. Information Supporting CP Chem’s
MPGF AMEL Requests
CP Chem provided all the information
specified in the MPGF AMEL
framework finalized on April 21, 2016
(see 81 FR 23480), to support their
AMEL request. This information
includes, but is not limited to: (1)
Details on the project scope and
background; (2) information on
regulatory applicability; (3) MPGF test
data on destruction efficiency/
combustion efficiency; (4) MPGF
stability testing data, (5) MPGF crosslight testing data; (6) information on
flare reduction considerations; and (7)
information on appropriate MPGF
monitoring and operating conditions. In
addition, because the MPGF AMEL
framework did not specifically address
an MPGF design that would utilize
pressure-assisted burners and that
would also be steam-assisted (i.e., HP
stages 1 and 2 of CP Chem’s
polyethylene plant MPGF), CP Chem
conducted additional performance
testing on an n-butane/nitrogen vent gas
mixture over a range of combustion
zone net heating values (NHVcz), vent
gas exit velocity regimes, and steam
flow rate regimes in order to establish
where the burners can achieve a
destruction efficiency of n-butane of 98
percent or greater.3 An n-butane vent
gas mixture was tested because CP
Chem indicated in their AMEL request
that a cooling water failure would be
their worst case upset design scenario
from an MPGF perspective and that the
vent gas sent to the flare would be
predominantly isobutane. However,
given that n-butane was more readily
available than isobutane and given that
they both have the same molecular
formula (C4H10), the same lower
flammability limits, and have almost
identical net heating values, n-butane
was tested in lieu of isobutane (see
Table 2 in section III. below for more
details). In addition, each of the valid
destruction efficiency test runs
conducted lasted for a minimum of 10
3 The EPA has previously concluded that flares
operating in accordance with the General
Provisions flare requirements of part 60 and 63
destroy VOC and HAP with a destruction efficiency
of 98 percent or greater. Standard of Performance
for New Stationary Sources: General Provisions;
National Emission Standards for Hazardous Air
Pollutants for Source Categories: General
Provisions, 63 FR 24436, 24437 (May 4, 1998).
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16395
minutes and none of these runs
displayed any characteristics of flame
instability (for further information on
the supporting materials provided by CP
Chem, see the docket at Docket ID No.
EPA–HQ–OAR–2014–0738).
III. AMEL for the Proposed MPGFs
We are seeking the public’s input on
CP Chem’s request that the EPA approve
an AMEL for the two MPGFs proposed
to be used at CP Chem’s ethylene plant
in Baytown, Texas, and CP Chem’s
polyethylene plant in Old Ocean, Texas.
Specifically, the EPA seeks the public’s
input on the requirements that will
ensure that the AMEL will achieve
emission reductions at least equivalent
to the emission reductions achieved
under the applicable NESHAP and
NSPS identified in Table 1, all of which
require compliance with 40 CFR
63.11(b) or 40 CFR 60.18(b),
respectively, when using a flare.3 Based
upon our review of the completed
AMEL request and the available
emissions test data submitted by CP
Chem,4 we believe that, by complying
with the following list of requirements,
the two proposed MPGFs will achieve
emission reductions at least equivalent
to emission reductions achieved under
40 CFR 63.11(b) and 40 CFR 60.18(b), as
required by the applicable NESHAP and
NSPS identified in Table 1:
(1) The MPGF system for all HP stages
at CP Chem’s ethylene plant and for all
HP stages excluding stage 1 and 2 for CP
Chem’s polyethylene plant must be
designed and operated such that the net
heating value of the combustion zone
gas (NHVcz) is greater than or equal to
800 British thermal units per standard
cubic foot (Btu/scf) or lower
flammability limit of the combustion
zone gas (LFLcz) is less than or equal to
6.5 percent by volume. The MPGF
system for HP stages 1 and 2 of CP
Chem’s polyethlene plant must be
designed and operated such that the
NHVcz is greater than or equal to 600
Btu/scf or the LFLcz is less than or equal
to 8.0 percent by volume. Owners or
operators must demonstrate compliance
with the NHVcz or LFLcz metric by
continuously complying with a 15minute block average. Owners or
operators must calculate and monitor
for the NHVcz or LFLcz according to the
following:
(a) Calculation of NHVcz
4 For further information on the test data
submitted by CP Chem to support their AMEL
request, see ‘‘CP Chemical AMEL Request for MultiPoint Ground Flares September 2015’’ at Docket ID
No. EPA–HQ–OAR–2014–0738–0048, as well as
‘‘CP Chemical Response to EPA November 2016’’ at
Docket ID No. EPA–HQ–OAR–2014–0738–0052.
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Federal Register / Vol. 82, No. 63 / Tuesday, April 4, 2017 / Notices
(b) Calculation of LFLcz
(i) The owner or operator shall
determine LFLcz from compositional
analysis data by using the following
equation:
where:
where:
NHVvg = Net heating value of flare vent gas,
Btu/scf. Flare vent gas means all gas
found just prior to the MPGF. This gas
includes all flare waste gas (i.e., gas from
facility operations that is directed to a
flare for the purpose of disposing of the
gas), flare sweep gas, flare purge gas and
flare supplemental gas, but does not
include pilot gas.
i = Individual component in flare vent gas.
n = Number of components in flare vent gas.
xi = Concentration of component i in flare
vent gas, volume fraction.
NHVi = Net heating value of component i
determined as the heat of combustion
where the net enthalpy per mole of
offgas is based on combustion at 25
degrees Celsius (°C) and 1 atmosphere
(or constant pressure) with water in the
gaseous state from values published in
the literature, and then the values
converted to a volumetric basis using 20
°C for ‘‘standard temperature.’’ Table 2
summarizes component properties
including net heating values.
(ii) For all MPGF HP stages at CP
Chem’s ethylene plant and for all MPGF
HP stages, excluding stage 1 and 2 for
CP Chem’s polyethylene plant, NHVvg =
NHVcz.
(iii) For HP stages 1 and 2 of CP
Chem’s polyethlene plant MPGF, NHVcz
shall be calculated using the following
equation:
LFLvg = Lower flammability limit of flare vent
gas, volume percent (vol %).
n = Number of components in the vent gas.
i = Individual component in the vent gas.
ci = Concentration of component i in the vent
gas, vol %.
LFLi = Lower flammability limit of
component i as determined using values
published by the U.S. Bureau of Mines
(Zabetakis, 1965), vol %. All inerts,
including nitrogen, are assumed to have
an infinite LFL (e.g., LFLN2 = ∞, so that
cN2/LFLN2 = 0). LFL values for common
flare vent gas components are provided
in Table 2.
(ii) For all MPGF HP stages at CP
Chem’s ethylene plant and for all MPGF
HP stages excluding stages 1 and 2 for
CP Chem’s polyethylene plant, LFLvg =
LFLcz.
(iii) For HP stages 1 and 2 of CP
Chem’s polyethlene plant MPGF, LFLcz
shall be calculated using the following
equation:
where:
(c) The operator of an MPGF system
shall install, operate, calibrate, and
maintain a monitoring system capable of
continuously measuring the volumetric
flow rate of flare vent gas (Qvg) and the
volumetric flow rate of total assist steam
(Qs).
Qvol = Volumetric flow rate, scf per second.
Qmass = Mass flow rate, pounds per second.
385.3 = Conversion factor, scf per poundmole.
MWt = Molecular weight of the gas at the
flow monitoring location, pounds per
pound-mole.
(iii) Mass flow monitors may be used
for determining volumetric flow rate of
total assist steam. Use Equation 5 to
convert mass flow rates to volumetric
flow rates. Use a molecular weight of 18
pounds per pound-mole for total assist
steam.
(d) The operator shall install, operate,
calibrate, and maintain a monitoring
system capable of continuously
measuring (i.e., at least once every 15
minutes), calculating, and recording the
individual component concentrations
present in the flare vent gas or the
owner or operator shall install, operate,
calibrate, and maintain a monitoring
system capable of continuously
measuring, calculating, and recording
NHVvg (in BTU/scf).
(e) For each measurement produced
by the monitoring system used to
comply with (1)(d) above, the operator
shall determine the 15-minute block
average as the arithmetic average of all
measurements made by the monitoring
system within the 15-minute period.
(f) The operator must follow the
calibration and maintenance procedures
according to Table 3. Maintenance
periods, instrument adjustments, or
checks to maintain precision and
accuracy and zero and span adjustments
may not exceed 5 percent of the time the
flare is receiving regulated material.
EN04AP17.002</GPH>
NHVcz = Net heating value of combustion
zone gas, Btu/scf.
NHVvg = Net heating value of flare vent gas
for the 15-minute block period as
determined according to (1)(a)(i) above,
Btu/scf.
Qvg = Cumulative volumetric flow of flare
vent gas during the 15-minute block
where:
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04APN1
EN04AP17.001</GPH>
asabaliauskas on DSK3SPTVN1PROD with NOTICES
where:
LFLcz = lower flammability limit of
combustion zone gas, vol %.
LFLvg = Lower flammability limit of flare vent
gas, vol %.
Qvg = Cumulative volumetric flow of flare
vent gas during the 15-minute block
period, scf.
Qs = Cumulative volumetric flow of total
assist steam during the 15-minute block
period, scf.
(i) The flow rate monitoring systems
must be able to correct for the
temperature and pressure of the system
and output parameters in standard
conditions (i.e., a temperature of 20 °C
(68 °F) and a pressure of 1 atmosphere).
(ii) Mass flow monitors may be used
for determining volumetric flow rate of
flare vent gas provided the molecular
weight of the flare vent gas is
determined using compositional
analysis so that the mass flow rate can
be converted to volumetric flow at
standard conditions using the following
equation:
EN04AP17.005</GPH>
period, standard cubic feet (scf).
Qs = Cumulative volumetric flow of total
assist steam during the 15-minute block
period, scf.
EN04AP17.004</GPH>
(i) The owner or operator shall
determine the net heating value of flare
vent gas (NHVvg) by following the
requirements of (1)(d)–(1)(e) below. If an
owner or operator elects to use a
monitoring system capable of
continuously measuring (i.e., at least
once every 15 minutes), calculating, and
recording the individual component
concentrations present in the flare vent
gas, NHVvg shall be calculated using the
following equation:
EN04AP17.003</GPH>
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Federal Register / Vol. 82, No. 63 / Tuesday, April 4, 2017 / Notices
TABLE 2—INDIVIDUAL COMPONENT PROPERTIES
MWi
(pounds per
pound-mole)
Component
Molecular
formula
Acetylene .................................................................................
Benzene ..................................................................................
1,2-Butadiene ..........................................................................
1,3-Butadiene ..........................................................................
iso-Butane ...............................................................................
n-Butane ..................................................................................
cis-Butene ................................................................................
iso-Butene ...............................................................................
trans-Butene ............................................................................
Carbon Dioxide ........................................................................
Carbon Monoxide ....................................................................
Cyclopropane ..........................................................................
Ethane .....................................................................................
Ethylene ...................................................................................
Hydrogen .................................................................................
Hydrogen Sulfide .....................................................................
Methane ...................................................................................
Methyl-Acetylene .....................................................................
Nitrogen ...................................................................................
Oxygen ....................................................................................
Pentane+ (C5+) .......................................................................
Propadiene ..............................................................................
Propane ...................................................................................
Propylene ................................................................................
Water .......................................................................................
C2H2 .......................................
C6H6 .......................................
C4H6 .......................................
C4H6 .......................................
C4H10 .....................................
C4H10 .....................................
C4H8 .......................................
C4H8 .......................................
C4H8 .......................................
CO2 ........................................
CO ..........................................
C3H6 .......................................
C2H6 .......................................
C2H4 .......................................
H2 ...........................................
H2S .........................................
CH4 ........................................
C3H4 .......................................
N2 ...........................................
O2 ...........................................
C5H12 .....................................
C3H4 .......................................
C3H8 .......................................
C3H6 .......................................
H2O ........................................
26.04
78.11
54.09
54.09
58.12
58.12
56.11
56.11
56.11
44.01
28.01
42.08
30.07
28.05
2.02
34.08
16.04
40.06
28.01
32.00
72.15
40.06
44.10
42.08
18.02
NHVi
(British
thermal
units per
standard
cubic foot)
1,404
3,591
2,794
2,690
2,957
2,968
2,830
2,928
2,826
0
316
2,185
1,595
1,477
274
587
896
2,088
0
0
3,655
2,066
2,281
2,150
0
LFLi
(volume %)
2.5
1.3
2.0
2.0
1.8
1.8
1.6
1.8
1.7
∞
12.5
2.4
3.0
2.7
4.0
4.0
5.0
1.7
∞
∞
1.4
2.16
2.1
2.4
∞
TABLE 3—ACCURACY AND CALIBRATION REQUIREMENTS
Parameter
Accuracy requirements
Calibration requirements
Flare Vent Gas Flow Rate ................................................
±20 percent of flow rate at
velocities ranging from
0.1 to 1 foot per second.
Performance evaluation biennially (every 2 years) and
following any period of more than 24 hours throughout which the flow rate exceeded the maximum rated
flow rate of the sensor, or the data recorder was off
scale. Checks of all mechanical connections for leakage monthly. Visual inspections and checks of system operation every 3 months, unless the system
has a redundant flow sensor.
Select a representative measurement location where
swirling flow or abnormal velocity distributions due to
upstream and downstream disturbances at the point
of measurement are minimized.
Conduct a flow sensor calibration check at least biennially (every two years); conduct a calibration check
following any period of more than 24 hours throughout which the flow rate exceeded the manufacturer’s
specified maximum rated flow rate or install a new
flow sensor.
At least quarterly, inspect all components for leakage,
unless the continuous parameter monitoring system
has a redundant flow sensor.
±5 percent of flow rate at
velocities greater than 1
foot per second.
asabaliauskas on DSK3SPTVN1PROD with NOTICES
Flow Rate for All Flows Other Than Flare Vent Gas .......
Pressure ............................................................................
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PO 00000
±5 percent over the normal
range of flow measured
or 1.9 liters per minute
(0.5 gallons per minute),
whichever is greater, for
liquid flow.
±5 percent over the normal
range of flow measured
or 280 liters per minute
(10 cubic feet per
minute), whichever is
greater, for gas flow.
±5 percent over the normal
range measured for mass
flow.
±5 percent over the normal
range measured or 0.12
kilopascals (0.5 inches of
water column), whichever
is greater.
Frm 00064
Fmt 4703
Sfmt 4703
Record the results of each calibration check and inspection. Locate the flow sensor(s) and other necessary equipment (such as straightening vanes) in a
position that provides representative flow; reduce
swirling flow or abnormal velocity distributions due to
upstream and downstream disturbances.
Review pressure sensor readings at least once a week
for straight-line (unchanging) pressure and perform
corrective action to ensure proper pressure sensor
operation if blockage is indicated.
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Federal Register / Vol. 82, No. 63 / Tuesday, April 4, 2017 / Notices
TABLE 3—ACCURACY AND CALIBRATION REQUIREMENTS—Continued
Parameter
Accuracy requirements
±2 percent of span .............
Net Heating Value by Gas Chromatograph .....................
asabaliauskas on DSK3SPTVN1PROD with NOTICES
Net Heating Value by Calorimeter ....................................
As specified in Performance Specification (PS) 9
of 40 CFR part 60, appendix B.
(2) The MPGF system shall be
operated with a flame present at all
times when in use. Each burner on HP
stages 1 and 2 of CP Chem’s
polyethylene plant MPGF must have a
pilot with a continuously lit pilot flame.
Additionally, each HP stage of CP
Chem’s ethylene plant MPGF and all HP
stages excluding stages 1 and 2 for CP
Chem’s polyethylene plant MPGF must
have at least two pilots with a
continuously lit pilot flame. Each pilot
flame must be continuously monitored
by a thermocouple or any other
equivalent device used to detect the
presence of a flame. The time, date, and
duration of any complete loss of pilot
flame on any of the individual MPGF
burners on HP stages 1 and 2 of CP
Chem’s polyethylene plant MPGF, on
any of the HP stages of CP Chem’s
ethylene plant MPGF and on any of the
HP stages excluding stages 1 and 2 of CP
Chem’s polyethylene plant MPGF must
be recorded. Each monitoring device
must be maintained or replaced at a
frequency in accordance with the
manufacturer’s specifications.
(3) The MPGF system shall be
operated with no visible emissions
except for periods not to exceed a total
of 5 minutes during any 2 consecutive
hours. A video camera that is capable of
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16:21 Apr 03, 2017
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Calibration requirements
Performance evaluation annually and following any period of more than 24 hours throughout which the
pressure exceeded the maximum rated pressure of
the sensor, or the data recorder was off scale.
Checks of all mechanical connections for leakage
monthly. Visual inspection of all components for integrity, oxidation and galvanic corrosion every 3
months, unless the system has a redundant pressure
sensor.
Select a representative measurement location that minimizes or eliminates pulsating pressure, vibration, and
internal and external corrosion.
Calibration requirements should follow manufacturer’s
recommendations at a minimum.
Temperature control (heated and/or cooled as necessary) the sampling system to ensure proper yearround operation.
Where feasible, select a sampling location at least 2
equivalent diameters downstream from and 0.5
equivalent diameters upstream from the nearest disturbance. Select the sampling location at least 2
equivalent duct diameters from the nearest control
device, point of pollutant generation, air in-leakages,
or other point at which a change in the pollutant concentration or emission rate occurs.
Follow the procedure in PS 9 of 40 CFR part 60, appendix B, except that a single daily mid-level calibration check can be used (rather than triplicate analysis), the multi-point calibration can be conducted
quarterly (rather than monthly), and the sampling line
temperature must be maintained at a minimum temperature of 60 °C (rather than 120 °C).
continuously recording (i.e., at least one
frame every 15 seconds with time and
date stamps) images of the flare flame
and a reasonable distance above the
flare flame at an angle suitable for
visible emissions observations must be
used to demonstrate compliance with
this requirement. The owner or operator
must provide real-time video
surveillance camera output to the
control room or other continuously
manned location where the video
camera images may be viewed at any
time.
(4) The operator of an MPGF system
shall install and operate pressure
monitor(s) on the main flare header, as
well as a valve position indicator
monitoring system capable of
monitoring and recording the position
for each staging valve to ensure that the
MPGF operates within the range of
tested conditions or within the range of
the manufacturer’s specifications. The
pressure monitor shall meet the
requirements in Table 3. Maintenance
periods, instrument adjustments or
checks to maintain precision and
accuracy, and zero and span
adjustments may not exceed 5 percent
of the time the flare is receiving
regulated material.
(5) Recordkeeping Requirements
PO 00000
Frm 00065
Fmt 4703
Sfmt 4703
(a) All data must be recorded and
maintained for a minimum of 3 years or
for as long as required under applicable
rule subpart(s), whichever is longer.
(6) Reporting Requirements
(a) The information specified in
section III (6)(b) and (c) below must be
reported in the timeline specified by the
applicable rule subpart(s) for which the
MPGF will control emissions.
(b) Owners or operators shall include
the following information in their initial
Notification of Compliance status
report:
(i) Specify flare design as a pressureassisted MPGF. CP Chem’s polyethylene
plant shall also clearly note that HP
stages 1 and 2 are also steam-assisted.
(ii) All visible emission readings,
NHVcz and/or LFLcz determinations, and
flow rate measurements. For MPGF, exit
velocity determinations do not need to
be reported as the maximum permitted
velocity requirements in the General
Provisions at 40 CFR 60.18(b) and 40
CFR 63.11(b) are not applicable.
(iii) All periods during the
compliance determination when a
complete loss of pilot flame on any stage
of MPGF burners occurs, and, for HP
stages 1 and 2 of CP Chem’s
polyethylene plant MPGF, all periods
during the compliance determination
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Federal Register / Vol. 82, No. 63 / Tuesday, April 4, 2017 / Notices
when a complete loss of pilot flame on
an individual burner occurs.
(iv) All periods during the compliance
determination when the pressure
monitor(s) on the main flare header
show the MPGF burners operating
outside the range of tested conditions or
outside the range of the manufacturer’s
specifications.
(v) All periods during the compliance
determination when the staging valve
position indicator monitoring system
indicates a stage of the MPGF should
not be in operation and is or when a
stage of the MPGF should be in
operation and is not.
(c) The owner or operator shall notify
the Administrator of periods of excess
emissions in their Periodic Reports.
These periods of excess emissions shall
include:
(i) Records of each 15-minute block
for all HP stages of CP Chem’s ethylene
plant MPGF and for all HP stages
excluding stages 1 and 2 of CP Chem’s
polyethylene plant MPGF during which
there was at least 1 minute when
regulated material was routed to the
MPGF and a complete loss of pilot flame
on a stage of burners occurred, and, for
HP stages 1 and 2 of CP Chem’s
polyethylene plant MPGF, records of
each 15-minute block during which
there was at least 1 minute when
regulated material was routed to the
MPGF and a complete loss of pilot flame
on an individual burner occurred.
(ii) Records of visible emissions
events (including the time and date
stamp) that exceed more than 5 minutes
in any 2-hour consecutive period.
(iii) Records of each 15-minute block
period for which an applicable
combustion zone operating limit (i.e.,
NHVcz or LFLcz) is not met for the MPGF
when regulated material is being
combusted in the flare. Indicate the date
and time for each period, the NHVcz
and/or LFLcz operating parameter for the
period and the type of monitoring
system used to determine compliance
with the operating parameters (e.g., gas
chromatograph or calorimeter). For CP
Chem’s polyethylene plant MPGF, also
indicate which HP stages were in use.
(iv) Records of when the pressure
monitor(s) on the main flare header
show the MPGF burners are operating
outside the range of tested conditions or
outside the range of the manufacturer’s
specifications. Indicate the date and
time for each period, the pressure
measurement, the stage(s) and number
of MPGF burners affected, and the range
of tested conditions or manufacturer’s
specifications.
(v) Records of when the staging valve
position indicator monitoring system
indicates a stage of the MPGF should
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Jkt 241001
not be in operation and is or when a
stage of the MPGF should be in
operation and is not. Indicate the date
and time for each period, whether the
stage was supposed to be open, but was
closed or vice versa, and the stage(s) and
number of MPGF burners affected.
IV. Request for Comments
Dated: March 14, 2017.
Stephen Page,
Director, Office of Air Quality Planning and
Standards.
[FR Doc. 2017–06597 Filed 4–3–17; 8:45 am]
BILLING CODE 6560–50–P
FEDERAL FINANCIAL INSTITUTIONS
EXAMINATION COUNCIL
[Docket No. AS17–03]
Appraisal Subcommittee of the
Federal Financial Institutions
Examination Council.
ACTION: Suspension of comment period.
AGENCY:
The Appraisal Subcommittee
of the Federal Financial Institutions
Examination Council (ASC) is
suspending the public comment period
for the Proposed Revised Policy
Statements effective April 4, 2017. The
ASC published the Proposed Revised
Policy Statements on January 10, 2017,
under Docket Number AS17–01. The
comment period was scheduled to close
on April 10, 2017. The suspension of
the comment period will allow the
President’s appointees the opportunity
to review and consider this action.
DATES: The comment period is
indefinitely suspended effective April 4,
2017.
ADDRESSES: For access to the docket to
read background documents and
comments received, go to https://
www.regulations.gov and follow the
online instructions for accessing the
docket.
SUMMARY:
FOR FURTHER INFORMATION CONTACT:
James R. Park, Executive Director, at
(202) 595–7575, or Alice M. Ritter,
Fmt 4703
Dated: March 29, 2017.
Arthur Lindo,
Chairman.
[FR Doc. 2017–06596 Filed 4–3–17; 8:45 am]
FEDERAL RESERVE SYSTEM
[Docket No. OP–1561]
Solicitation of Applications for
Membership on the Community
Advisory Council
Board of Governors of the
Federal Reserve System, Federal
Reserve System.
ACTION: Notice.
AGENCY:
The Board of Governors of the
Federal Reserve System (Board)
established the Community Advisory
Council (the ‘‘CAC’’) as an advisory
committee to the Board on issues
affecting consumers and communities.
This Notice advises individuals who
wish to serve as CAC members of the
opportunity to be considered for the
CAC.
SUMMARY:
Applications received on or
before June 5, 2017, 11:59 p.m. Eastern
Standard Time will be considered for
selection to the CAC for terms beginning
January 1, 2018.
ADDRESSES: Individuals who are
interested in being considered for the
CAC may submit an application via the
Board’s Web site or via email. The
application can be accessed at https://
www.federalreserve.gov/secure/CAC/
Application/. Emailed submissions can
be sent to CCA-CAC@frb.gov. The
information required for consideration
is described below.
If electronic submission is not
feasible, submissions may be mailed to
the Board of Governors of the Federal
Reserve System, Attn: Community
Advisory Council, Mail Stop N–805,
20th Street and Constitution Ave. NW.,
Washington, DC 20551.
FOR FURTHER INFORMATION CONTACT:
Jennifer Fernandez, Community
Development Analyst, Division of
Consumer and Community Affairs,
Board of Governors of the Federal
Reserve System, 20th Street and
Constitution Ave. NW., Washington, DC
20551, or (202) 912–4386, or CCA-CAC@
frb.gov. Telecommunications Device for
the Deaf (TDD) users may contact (202)
263–4869.
SUPPLEMENTARY INFORMATION: The Board
created the Community Advisory
DATES:
Appraisal Subcommittee; Proposed
Revised Policy Statements
Frm 00066
General Counsel, at (202) 595–7577,
Appraisal Subcommittee, 1401 H Street
NW., Suite 760, Washington, DC 20005.
BILLING CODE P
We solicit comments on all aspects of
CP Chem’s request for approval of an
AMEL for the standards specified in
Table 1. We specifically seek comment
regarding whether or not the alternative
operating requirements listed in section
III above will achieve emission
reductions at least equivalent to the
provisions in the NSPS and NESHAP
presented in Table 1 that require flares
to meet the requirements in 40 CFR
63.11(b) and 40 CFR 60.18(b).
PO 00000
Sfmt 4703
16399
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]]>Agencies
[Federal Register Volume 82, Number 63 (Tuesday, April 4, 2017)]
[Notices]
[Pages 16392-16399]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2017-06597]
=======================================================================
-----------------------------------------------------------------------
ENVIRONMENTAL PROTECTION AGENCY
[EPA-HQ-OAR-2014-0738; FRL-9960-13-OAR]
Notice of Requests for Approval of an Alternative Means of
Emission Limitation at Chevron Phillips Chemical Company LP
AGENCY: Environmental Protection Agency (EPA).
ACTION: Notice; request for comments.
-----------------------------------------------------------------------
SUMMARY: This action provides public notice and solicits comment on the
alternative means of emission limitation (AMEL) request from Chevron
Phillips Chemical Company LP (CP Chem), requested under the Clean Air
Act (CAA), to operate a multi-point ground flare (MPGF) at their new
ethylene plant in Baytown, Texas, and an MPGF at their new polyethylene
plant in Old Ocean, Texas.\1\ In this action, the Environmental
Protection Agency (EPA) is soliciting comment on all aspects of this
request for an AMEL and the alternative operating conditions that would
be sufficient to achieve a reduction in emissions of volatile organic
compounds (VOC) and
[[Page 16393]]
hazardous air pollutants (HAP) at least equivalent to the reduction in
emissions required by various standards in 40 CFR parts 60, 61, and 63
that apply to emission sources controlled by these MPGFs. These
standards incorporate the design and operating requirements for flares
in the General Provisions to parts 60 and 63, respectively, as part of
the emission reduction requirements. The proposed MPGF designs cannot
meet the velocity requirements in these General Provisions; however, CP
Chem's request for an alternative means of emission limit demonstrates
that the alternative proposed would achieve at least equivalent
emissions reductions as flares that meet the standards in the General
Provisions.
---------------------------------------------------------------------------
\1\ The MPGF at both the ethylene plant and polyethylene plant
will utilize pressure-assisted burners on all the high pressure
stages; however, the first two stages on the MPGF at the
polyethylene plant will also be steam-assisted.
DATES: Comments. Comments must be received on or before May 4, 2017,
unless a public hearing is requested by April 10, 2017. If a public
hearing is requested on this action, written comments must be received
by May 19, 2017.
Public Hearing. If a public hearing is requested by April 10, 2017,
we will hold a public hearing on April 19, 2017, from 1:00 p.m.
[Central Daylight Time] to 5:00 p.m. [Central Daylight Time] in the
Houston, Texas, area. We will provide details on the public hearing, if
one is requested, on our Web site at: https://www3.epa.gov/ttn/atw/groundflares/groundflarespg.html. The EPA does not intend to publish
another notice in the Federal Register announcing any updates on the
request for a public hearing, so please be sure to check the Web site
above for updates. Again, a public hearing will not be held unless
someone specifically requests that the EPA hold a public hearing
regarding these requests. Please contact Ms. Virginia Hunt, Sector
Policies and Programs Division (E143-01), Office of Air Quality
Planning and Standards, U.S. Environmental Protection Agency, Research
Triangle Park, NC 27711; telephone number: (919) 541-0832; email
address: hunt.virginia@epa.gov; to request a public hearing, to
register to speak at the public hearing or to inquire as to whether a
public hearing will be held. The last day to pre-register in advance to
speak at the public hearing will be April 17, 2017.
ADDRESSES: Comments. Submit your comments, identified by Docket ID No.
EPA-HQ-OAR-2014-0738, at https://www.regulations.gov. Follow the online
instructions for submitting comments. Once submitted, comments cannot
be edited or removed from Regulations.gov. The EPA may publish any
comment received to its public docket. Do not submit electronically any
information you consider to be Confidential Business Information (CBI)
or other information whose disclosure is restricted by statute.
Multimedia submissions (audio, video, etc.) must be accompanied by a
written comment. The written comment is considered the official comment
and should include discussion of all points you wish to make. The EPA
will generally not consider comments or comment contents located
outside of the primary submission (i.e., on the Web, cloud, or other
file sharing system). For additional submission methods, the full EPA
public comment policy, information about CBI or multimedia submissions,
and general guidance on making effective comments, please visit https://www2.epa.gov/dockets/commenting-epa-dockets.
Instructions. Direct your comments to Docket ID No. EPA-HQ-OAR-
2014-0738. The EPA's policy is that all comments received will be
included in the public docket without change and may be made available
online at https://www.regulations.gov, including any personal
information provided, unless the comment includes information claimed
to be CBI or other information whose disclosure is restricted by
statute. Do not submit information that you consider to be CBI or
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which means the EPA will not know your identity or contact information
unless you provide it in the body of your comment. If you send an email
comment directly to the EPA without going through https://www.regulations.gov, your email address will be automatically captured
and included as part of the comment that is placed in the public docket
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be able to consider your comment. Electronic files should not include
special characters or any form of encryption and be free of any defects
or viruses. For additional information about the EPA's public docket,
visit the EPA Docket Center homepage at https://www.epa.gov/dockets.
Docket. The EPA has established a docket for this rulemaking under
Docket ID No. EPA-HQ-OAR-2014-0738. All documents in the docket are
listed in the Regulations.gov index. Although listed in the index, some
information is not publicly available, e.g., CBI or other information
whose disclosure is restricted by statute. Certain other material, such
as copyrighted material, is not placed on the Internet and will be
publicly available only in hard copy. Publicly available docket
materials are available either electronically in Regulations.gov or in
hard copy at the EPA Docket Center, Room 3334, EPA WJC West Building,
1301 Constitution Avenue NW., Washington, DC. The Public Reading Room
is open from 8:30 a.m. to 4:30 p.m., Monday through Friday, excluding
legal holidays. The telephone number for the Public Reading Room is
(202) 566-1744, and the telephone number for the EPA Docket Center is
(202) 566-1742.
FOR FURTHER INFORMATION CONTACT: For questions about this action,
contact Mr. Andrew Bouchard, Sector Policies and Programs Division
(E143-01), Office of Air Quality Planning and Standards (OAQPS), U.S.
Environmental Protection Agency, Research Triangle Park, North Carolina
27711; telephone number: (919) 541-4036; fax number: (919) 541-0246;
and email address: bouchard.andrew@epa.gov.
SUPPLEMENTARY INFORMATION:
Acronyms and Abbreviations. We use multiple acronyms and terms in
this notice. While this list may not be exhaustive, to ease the reading
of this notice and for reference purposes, the EPA defines the
following terms and acronyms here:
AMEL alternative means of emission limitation
Btu/scf British thermal units per standard cubic foot
CAA Clean Air Act
CBI confidential business information
CFR Code of Federal Regulations
CP Chem Chevron Phillips Chemical Company LP
EPA Environmental Protection Agency
Eqn equation
HAP hazardous air pollutants
HP high pressure
LFL lower flammability limit
LFLcz lower flammability limit of combustion zone gas
LFLvg lower flammability limit of flare vent gas
MPGF multi-point ground flares
NESHAP national emission standards for hazardous air pollutants
NHV net heating value
NHVcz net heating value of combustion zone gas
NHVvg net heating value of flare vent gas
NSPS new source performance standards
OAQPS Office of Air Quality Planning and Standards
scf standard cubic feet
VOC volatile organic compounds
[[Page 16394]]
Organization of This Document. The information in this notice is
organized as follows:
I. Background
A. Regulatory Flare Requirements and CP Chem's AMEL Request
II. Requests for AMEL
A. CP Chem's Ethylene Plant
B. CP Chem's Polyethylene Plant
C. Information Supporting CP Chem's MPGF AMEL Requests
III. AMEL for the Proposed MPGFs
IV. Request for Comments
I. Background
A. Regulatory Flare Requirements and CP Chem's AMEL Request
CP Chem submitted a complete MPGF AMEL request, following the MPGF
AMEL framework that was published in the Federal Register (see 81 FR
23480, April 21, 2016), to the EPA on November 28, 2016. CP Chem is
seeking an AMEL to operate an MPGF for use during limited high-pressure
maintenance, startup, and shutdown events, as well as during upset
events at their ethylene plant in Baytown, Texas. In addition, CP Chem
is seeking an AMEL to operate an MPGF during certain routine operations
(i.e., the first two stages only), as well as during periods of
maintenance, startup, shutdown, and upset at their polyethylene plant
in Old Ocean, Texas (see section II.B. below for more details). In
their request, CP Chem cited various regulatory requirements in 40 CFR
parts 60, 61, and 63 that will apply to the flare vent gas streams that
will be collected and routed to their MPGF at each of these two plants.
See Table 1 for a list of regulations, by subparts, that CP Chem has
identified as applicable to the two plants described above. These new
source performance standards (NSPS) and national emissions standards
for hazardous air pollutants (NESHAP) require that flares subject to
these subparts meet the flare design and operating requirements in the
General Provisions of part 60 and 63, respectively (i.e., 40 CFR
60.18(b) and 63.11(b)). CP Chem is requesting that the EPA approve an
AMEL for the flare requirements in these subparts.
Table 1--Summary of Applicable Rules That May Apply To Vent Streams Controlled by Multi-Point Ground Flares
----------------------------------------------------------------------------------------------------------------
Rule citation from
Applicable rules with vent CP Chem CP Chem Title 40 CFR that Provisions for
streams going to control ethylene plant polyethylene allow for use of a alternative means of
device(s) plant flare emission limitation
----------------------------------------------------------------------------------------------------------------
NSPS Subpart VV............... ............... X 60.482-10(d).......... 60.484(a)-(f).
NSPS Subpart VVa.............. X ............... 60.482-10a(d)......... 60.484a(a)-(f).
NSPS Subpart DDD.............. ............... X 60.562-1(a)(1)(i)(C).. CAA section 111(h)(3).
NSPS Subpart NNN.............. X ............... 60.662(b)............. CAA section 111(h)(3).
NSPS Subpart RRR.............. X ............... 60.702(b)............. CAA section 111(h)(3).
NESHAP Subpart FF............. X ............... 61.349(a)(2).......... 61.353(a); also see
61.12(d).
NESHAP Subpart SS............. X ............... 63.982(b)............. CAA section 112(h)(3).
NESHAP Subpart UU............. X ............... 63.1034............... 63.1021(a)-(d).
NESHAP Subpart XX............. X ............... 63.1091............... 63.1097(b)(1).
* Note--This subpart
cross-references to
NESHAP subpart FF
above.
NESHAP Subpart YY............. X ............... Table 7 to Sec. 63.1113.
63.1103(e) cross-
references to NESHAP
subpart SS above.
NESHAP Subpart FFFF........... ............... X 63.2450(e)(2)......... 63.2545(b)(1); also
see 63.6(g).
----------------------------------------------------------------------------------------------------------------
The provisions in each NSPS and NESHAP cited above that ensure
flares meet certain specific requirements when used to satisfy the
requirements of the NSPS or NESHAP were established as work practice
standards pursuant to CAA sections 111(h)(1) or 112(h)(1). For
standards established according to these provisions, CAA sections
111(h)(3) and 112(h)(3) allow the EPA to permit the use of an AMEL by a
source if, after notice and opportunity for comment,\2\ it is
established to the Administrator's satisfaction that such an AMEL will
achieve emissions reductions at least equivalent to the reductions
required under the CAA section 111(h)(1) or 112(h)(1) standard. As
noted in Table 1, many of the NSPS and NESHAP also include specific
regulatory provisions allowing sources to request an AMEL.
---------------------------------------------------------------------------
\2\ CAA section 111(h)(3) specifically requires that the EPA
provide an opportunity for a hearing.
---------------------------------------------------------------------------
CP Chem submitted an AMEL request because their MPGFs are designed
to operate above the maximum permitted velocity requirements for flares
in the General Provisions in 40 CFR parts 60 and 63. CP Chem provided
information that the MPGF designs they propose to use at both sites
will achieve a reduction in emissions at least equivalent to the
reduction in emissions for flares complying with these General
Provisions requirements. For further information on CP Chem's specific
AMEL request, see supporting materials from CP Chem at Docket ID No.
EPA-HQ-OAR-2014-0738.
II. Requests for AMEL
A. CP Chem's Ethylene Plant
CP Chem indicates in their MPGF AMEL request that they plan to
construct and operate an MPGF at their Cedar Bayou ethylene plant in
Baytown, Texas. This new ethylene plant will use ethane as a feedstock
and be able to produce approximately 1.5 million metric tons per year
of ethylene. CP Chem is proposing to use a staged flare design to
control emissions of VOC and HAP from various process vents during
normal operations, as well as during maintenance, startup, shutdown,
and upset operating conditions. During normal operation and most of the
routine maintenance activities, CP Chem will operate a low pressure
steam-assisted ground flare consisting of eight Callidus MP4U burners.
This low pressure stage of the flare is not specifically part of the
AMEL request, because this flare can comply with the General Provisions
requirements of 40 CFR 60.18(b) and 63.11(b), which are cross-
referenced in the applicable NSPS and NESHAP provisions. CP Chem has
submitted an AMEL request to operate the 17 high pressure (HP) stages
(i.e., 16 stages plus one spare stage) of the MPGF because the designed
flaring scenarios for when this portion of the MPGF will be used (i.e.,
during limited HP maintenance, startup, and shutdown
[[Page 16395]]
events, as well as during upset events) will exceed the maximum
permitted velocity requirements in the General Provisions at 40 CFR
60.18(b) and 40 CFR 63.11(b). The HP stages will also use Callidus MP4U
burners and have anywhere from 6 to 62 burners per stage (see
supporting materials from CP Chem at Docket ID No. EPA-HQ-OAR-2014-0738
for more details).
B. CP Chem's Polyethylene Plant
CP Chem indicates in their MPGF AMEL request that they also plan to
construct and operate an MPGF at their new polyethylene plant that will
be located adjacent to their Sweeny Chemical and Natural Gas Liquids
(NGL) Fractionation Plant in Old Ocean, Texas. The polyethylene plant
consists of two polyethylene units, each capable of producing 500,000
metric tons per year of polyethylene products. CP Chem is also
proposing to use a staged flare design scheme to control emissions of
VOC and HAP from various process vents during normal operations, as
well as during maintenance, startup, shutdown, and upset operating
conditions; however, the design, burner type and configuration of this
flare differ from that of the MPGF at the ethylene plant in a few key
ways. First, the low pressure stage of the flare will have four steam-
assisted Callidus LP-Expert tip burners. Similar to the design of CP
Chem's ethylene plant MPGF, this low pressure stage is not specifically
part of the AMEL request as it can comply with the flare General
Provisions requirements of 40 CFR 60.18(b) and 40 CFR 63.11(b). Second,
the MPGF will consist of 10 HP stages (i.e., nine stages plus one spare
stage), with each stage using Callidus MP4U burners. Lastly, unlike CP
Chem's ethylene plant MPGF, the first two stages of the HP side of this
MPGF will operate pressure-assisted burners that will also be steam-
assisted and control emissions during certain routine operations, as
well as during periods of startup, shutdown, maintenance, and upset
conditions. CP Chem indicates in their AMEL request that this
particular control scheme was chosen due to insufficient area in the
plot plan to add additional flare burners on the low pressure side that
could comply with the maximum permitted velocity requirements of 40 CFR
60.18(b) and 40 CFR 63.11(b). Thus, in order to account for all
potential routine flaring operation scenarios, CP Chem will operate the
first two stages of the HP side of the MPGF as flexible, or ``swing''
stages that can operate in both a low pressure capacity as well as high
pressure capacity. These first two stages will have a total of 18
burners, which account for approximately 10 percent of the total number
of flare burners on the HP side of the MPGF being proposed for use by
CP Chem (see supporting materials from CP Chem at Docket ID No. EPA-HQ-
OAR-2014-0738 for more details).
C. Information Supporting CP Chem's MPGF AMEL Requests
CP Chem provided all the information specified in the MPGF AMEL
framework finalized on April 21, 2016 (see 81 FR 23480), to support
their AMEL request. This information includes, but is not limited to:
(1) Details on the project scope and background; (2) information on
regulatory applicability; (3) MPGF test data on destruction efficiency/
combustion efficiency; (4) MPGF stability testing data, (5) MPGF cross-
light testing data; (6) information on flare reduction considerations;
and (7) information on appropriate MPGF monitoring and operating
conditions. In addition, because the MPGF AMEL framework did not
specifically address an MPGF design that would utilize pressure-
assisted burners and that would also be steam-assisted (i.e., HP stages
1 and 2 of CP Chem's polyethylene plant MPGF), CP Chem conducted
additional performance testing on an n-butane/nitrogen vent gas mixture
over a range of combustion zone net heating values (NHVcz), vent gas
exit velocity regimes, and steam flow rate regimes in order to
establish where the burners can achieve a destruction efficiency of n-
butane of 98 percent or greater.\3\ An n-butane vent gas mixture was
tested because CP Chem indicated in their AMEL request that a cooling
water failure would be their worst case upset design scenario from an
MPGF perspective and that the vent gas sent to the flare would be
predominantly isobutane. However, given that n-butane was more readily
available than isobutane and given that they both have the same
molecular formula (C4H10), the same lower
flammability limits, and have almost identical net heating values, n-
butane was tested in lieu of isobutane (see Table 2 in section III.
below for more details). In addition, each of the valid destruction
efficiency test runs conducted lasted for a minimum of 10 minutes and
none of these runs displayed any characteristics of flame instability
(for further information on the supporting materials provided by CP
Chem, see the docket at Docket ID No. EPA-HQ-OAR-2014-0738).
---------------------------------------------------------------------------
\3\ The EPA has previously concluded that flares operating in
accordance with the General Provisions flare requirements of part 60
and 63 destroy VOC and HAP with a destruction efficiency of 98
percent or greater. Standard of Performance for New Stationary
Sources: General Provisions; National Emission Standards for
Hazardous Air Pollutants for Source Categories: General Provisions,
63 FR 24436, 24437 (May 4, 1998).
---------------------------------------------------------------------------
III. AMEL for the Proposed MPGFs
We are seeking the public's input on CP Chem's request that the EPA
approve an AMEL for the two MPGFs proposed to be used at CP Chem's
ethylene plant in Baytown, Texas, and CP Chem's polyethylene plant in
Old Ocean, Texas. Specifically, the EPA seeks the public's input on the
requirements that will ensure that the AMEL will achieve emission
reductions at least equivalent to the emission reductions achieved
under the applicable NESHAP and NSPS identified in Table 1, all of
which require compliance with 40 CFR 63.11(b) or 40 CFR 60.18(b),
respectively, when using a flare.\3\ Based upon our review of the
completed AMEL request and the available emissions test data submitted
by CP Chem,\4\ we believe that, by complying with the following list of
requirements, the two proposed MPGFs will achieve emission reductions
at least equivalent to emission reductions achieved under 40 CFR
63.11(b) and 40 CFR 60.18(b), as required by the applicable NESHAP and
NSPS identified in Table 1:
---------------------------------------------------------------------------
\4\ For further information on the test data submitted by CP
Chem to support their AMEL request, see ``CP Chemical AMEL Request
for Multi-Point Ground Flares September 2015'' at Docket ID No. EPA-
HQ-OAR-2014-0738-0048, as well as ``CP Chemical Response to EPA
November 2016'' at Docket ID No. EPA-HQ-OAR-2014-0738-0052.
---------------------------------------------------------------------------
(1) The MPGF system for all HP stages at CP Chem's ethylene plant
and for all HP stages excluding stage 1 and 2 for CP Chem's
polyethylene plant must be designed and operated such that the net
heating value of the combustion zone gas (NHVcz) is greater than or
equal to 800 British thermal units per standard cubic foot (Btu/scf) or
lower flammability limit of the combustion zone gas (LFLcz) is less
than or equal to 6.5 percent by volume. The MPGF system for HP stages 1
and 2 of CP Chem's polyethlene plant must be designed and operated such
that the NHVcz is greater than or equal to 600 Btu/scf or the LFLcz is
less than or equal to 8.0 percent by volume. Owners or operators must
demonstrate compliance with the NHVcz or LFLcz metric by continuously
complying with a 15-minute block average. Owners or operators must
calculate and monitor for the NHVcz or LFLcz according to the
following:
(a) Calculation of NHVcz
[[Page 16396]]
(i) The owner or operator shall determine the net heating value of
flare vent gas (NHVvg) by following the requirements of (1)(d)-(1)(e)
below. If an owner or operator elects to use a monitoring system
capable of continuously measuring (i.e., at least once every 15
minutes), calculating, and recording the individual component
concentrations present in the flare vent gas, NHVvg shall be calculated
using the following equation:
[GRAPHIC] [TIFF OMITTED] TN04AP17.001
where:
NHVvg = Net heating value of flare vent gas, Btu/scf. Flare vent gas
means all gas found just prior to the MPGF. This gas includes all
flare waste gas (i.e., gas from facility operations that is directed
to a flare for the purpose of disposing of the gas), flare sweep
gas, flare purge gas and flare supplemental gas, but does not
include pilot gas.
i = Individual component in flare vent gas.
n = Number of components in flare vent gas.
xi = Concentration of component i in flare vent gas, volume
fraction.
NHVi = Net heating value of component i determined as the heat of
combustion where the net enthalpy per mole of offgas is based on
combustion at 25 degrees Celsius ([deg]C) and 1 atmosphere (or
constant pressure) with water in the gaseous state from values
published in the literature, and then the values converted to a
volumetric basis using 20 [deg]C for ``standard temperature.'' Table
2 summarizes component properties including net heating values.
(ii) For all MPGF HP stages at CP Chem's ethylene plant and for all
MPGF HP stages, excluding stage 1 and 2 for CP Chem's polyethylene
plant, NHVvg = NHVcz.
(iii) For HP stages 1 and 2 of CP Chem's polyethlene plant MPGF,
NHVcz shall be calculated using the following equation:
[GRAPHIC] [TIFF OMITTED] TN04AP17.002
where:
NHVcz = Net heating value of combustion zone gas, Btu/scf.
NHVvg = Net heating value of flare vent gas for the 15-minute block
period as determined according to (1)(a)(i) above, Btu/scf.
Qvg = Cumulative volumetric flow of flare vent gas during the 15-
minute block period, standard cubic feet (scf).
Qs = Cumulative volumetric flow of total assist steam during the 15-
minute block period, scf.
(b) Calculation of LFLcz
(i) The owner or operator shall determine LFLcz from compositional
analysis data by using the following equation:
[GRAPHIC] [TIFF OMITTED] TN04AP17.003
where:
LFLvg = Lower flammability limit of flare vent gas, volume percent
(vol %).
n = Number of components in the vent gas.
i = Individual component in the vent gas.
[chi]i = Concentration of component i in the vent gas, vol %.
LFLi = Lower flammability limit of component i as determined using
values published by the U.S. Bureau of Mines (Zabetakis, 1965), vol
%. All inerts, including nitrogen, are assumed to have an infinite
LFL (e.g., LFLN2 = [infin], so that [chi]N2/LFLN2 = 0). LFL values
for common flare vent gas components are provided in Table 2.
(ii) For all MPGF HP stages at CP Chem's ethylene plant and for all
MPGF HP stages excluding stages 1 and 2 for CP Chem's polyethylene
plant, LFLvg = LFLcz.
(iii) For HP stages 1 and 2 of CP Chem's polyethlene plant MPGF,
LFLcz shall be calculated using the following equation:
[GRAPHIC] [TIFF OMITTED] TN04AP17.004
where:
LFLcz = lower flammability limit of combustion zone gas, vol %.
LFLvg = Lower flammability limit of flare vent gas, vol %.
Qvg = Cumulative volumetric flow of flare vent gas during the 15-
minute block period, scf.
Qs = Cumulative volumetric flow of total assist steam during the 15-
minute block period, scf.
(c) The operator of an MPGF system shall install, operate,
calibrate, and maintain a monitoring system capable of continuously
measuring the volumetric flow rate of flare vent gas (Qvg) and the
volumetric flow rate of total assist steam (Qs).
(i) The flow rate monitoring systems must be able to correct for
the temperature and pressure of the system and output parameters in
standard conditions (i.e., a temperature of 20 [deg]C
(68[emsp14][deg]F) and a pressure of 1 atmosphere).
(ii) Mass flow monitors may be used for determining volumetric flow
rate of flare vent gas provided the molecular weight of the flare vent
gas is determined using compositional analysis so that the mass flow
rate can be converted to volumetric flow at standard conditions using
the following equation:
[GRAPHIC] [TIFF OMITTED] TN04AP17.005
where:
Qvol = Volumetric flow rate, scf per second.
Qmass = Mass flow rate, pounds per second.
385.3 = Conversion factor, scf per pound-mole.
MWt = Molecular weight of the gas at the flow monitoring location,
pounds per pound-mole.
(iii) Mass flow monitors may be used for determining volumetric
flow rate of total assist steam. Use Equation 5 to convert mass flow
rates to volumetric flow rates. Use a molecular weight of 18 pounds per
pound-mole for total assist steam.
(d) The operator shall install, operate, calibrate, and maintain a
monitoring system capable of continuously measuring (i.e., at least
once every 15 minutes), calculating, and recording the individual
component concentrations present in the flare vent gas or the owner or
operator shall install, operate, calibrate, and maintain a monitoring
system capable of continuously measuring, calculating, and recording
NHVvg (in BTU/scf).
(e) For each measurement produced by the monitoring system used to
comply with (1)(d) above, the operator shall determine the 15-minute
block average as the arithmetic average of all measurements made by the
monitoring system within the 15-minute period.
(f) The operator must follow the calibration and maintenance
procedures according to Table 3. Maintenance periods, instrument
adjustments, or checks to maintain precision and accuracy and zero and
span adjustments may not exceed 5 percent of the time the flare is
receiving regulated material.
[[Page 16397]]
Table 2--Individual Component Properties
----------------------------------------------------------------------------------------------------------------
NHV (British
MW (pounds per thermal units
Component Molecular formula pound-mole) per standard LFL (volume %)
cubic foot)
----------------------------------------------------------------------------------------------------------------
Acetylene............................. C2H2.................... 26.04 1,404 2.5
Benzene............................... C6H6.................... 78.11 3,591 1.3
1,2-Butadiene......................... C4H6.................... 54.09 2,794 2.0
1,3-Butadiene......................... C4H6.................... 54.09 2,690 2.0
iso-Butane............................ C4H10................... 58.12 2,957 1.8
n-Butane.............................. C4H10................... 58.12 2,968 1.8
cis-Butene............................ C4H8.................... 56.11 2,830 1.6
iso-Butene............................ C4H8.................... 56.11 2,928 1.8
trans-Butene.......................... C4H8.................... 56.11 2,826 1.7
Carbon Dioxide........................ CO2..................... 44.01 0 [infin]
Carbon Monoxide....................... CO...................... 28.01 316 12.5
Cyclopropane.......................... C3H6.................... 42.08 2,185 2.4
Ethane................................ C2H6.................... 30.07 1,595 3.0
Ethylene.............................. C2H4.................... 28.05 1,477 2.7
Hydrogen.............................. H2...................... 2.02 274 4.0
Hydrogen Sulfide...................... H2S..................... 34.08 587 4.0
Methane............................... CH4..................... 16.04 896 5.0
Methyl-Acetylene...................... C3H4.................... 40.06 2,088 1.7
Nitrogen.............................. N2...................... 28.01 0 [infin]
Oxygen................................ O2...................... 32.00 0 [infin]
Pentane+ (C5+)........................ C5H12................... 72.15 3,655 1.4
Propadiene............................ C3H4.................... 40.06 2,066 2.16
Propane............................... C3H8.................... 44.10 2,281 2.1
Propylene............................. C3H6.................... 42.08 2,150 2.4
Water................................. H2O..................... 18.02 0 [infin]
----------------------------------------------------------------------------------------------------------------
Table 3--Accuracy and Calibration Requirements
------------------------------------------------------------------------
Accuracy Calibration
Parameter requirements requirements
------------------------------------------------------------------------
Flare Vent Gas Flow Rate...... 20 Performance
percent of flow evaluation
rate at biennially (every 2
velocities years) and following
ranging from 0.1 any period of more
to 1 foot per than 24 hours
second. throughout which the
flow rate exceeded
the maximum rated
flow rate of the
sensor, or the data
recorder was off
scale. Checks of all
mechanical
connections for
leakage monthly.
Visual inspections
and checks of system
operation every 3
months, unless the
system has a
redundant flow
sensor.
5 Select a
percent of flow representative
rate at measurement location
velocities where swirling flow
greater than 1 or abnormal velocity
foot per second. distributions due to
upstream and
downstream
disturbances at the
point of measurement
are minimized.
Flow Rate for All Flows Other 5 Conduct a flow sensor
Than Flare Vent Gas. percent over the calibration check at
normal range of least biennially
flow measured or (every two years);
1.9 liters per conduct a
minute (0.5 calibration check
gallons per following any period
minute), of more than 24
whichever is hours throughout
greater, for which the flow rate
liquid flow. exceeded the
manufacturer's
specified maximum
rated flow rate or
install a new flow
sensor.
5 At least quarterly,
percent over the inspect all
normal range of components for
flow measured or leakage, unless the
280 liters per continuous parameter
minute (10 cubic monitoring system
feet per has a redundant flow
minute), sensor.
whichever is
greater, for gas
flow.
5 Record the results of
percent over the each calibration
normal range check and
measured for inspection. Locate
mass flow. the flow sensor(s)
and other necessary
equipment (such as
straightening vanes)
in a position that
provides
representative flow;
reduce swirling flow
or abnormal velocity
distributions due to
upstream and
downstream
disturbances.
Pressure...................... 5 Review pressure
percent over the sensor readings at
normal range least once a week
measured or 0.12 for straight-line
kilopascals (0.5 (unchanging)
inches of water pressure and perform
column), corrective action to
whichever is ensure proper
greater. pressure sensor
operation if
blockage is
indicated.
[[Page 16398]]
Performance
evaluation annually
and following any
period of more than
24 hours throughout
which the pressure
exceeded the maximum
rated pressure of
the sensor, or the
data recorder was
off scale. Checks of
all mechanical
connections for
leakage monthly.
Visual inspection of
all components for
integrity, oxidation
and galvanic
corrosion every 3
months, unless the
system has a
redundant pressure
sensor.
Select a
representative
measurement location
that minimizes or
eliminates pulsating
pressure, vibration,
and internal and
external corrosion.
Net Heating Value by 2 Calibration
Calorimeter. percent of span. requirements should
follow
manufacturer's
recommendations at a
minimum.
Temperature control
(heated and/or
cooled as necessary)
the sampling system
to ensure proper
year-round
operation.
Where feasible,
select a sampling
location at least 2
equivalent diameters
downstream from and
0.5 equivalent
diameters upstream
from the nearest
disturbance. Select
the sampling
location at least 2
equivalent duct
diameters from the
nearest control
device, point of
pollutant
generation, air in-
leakages, or other
point at which a
change in the
pollutant
concentration or
emission rate
occurs.
Net Heating Value by Gas As specified in Follow the procedure
Chromatograph. Performance in PS 9 of 40 CFR
Specification part 60, appendix B,
(PS) 9 of 40 CFR except that a single
part 60, daily mid-level
appendix B. calibration check
can be used (rather
than triplicate
analysis), the multi-
point calibration
can be conducted
quarterly (rather
than monthly), and
the sampling line
temperature must be
maintained at a
minimum temperature
of 60 [deg]C (rather
than 120 [deg]C).
------------------------------------------------------------------------
(2) The MPGF system shall be operated with a flame present at all
times when in use. Each burner on HP stages 1 and 2 of CP Chem's
polyethylene plant MPGF must have a pilot with a continuously lit pilot
flame. Additionally, each HP stage of CP Chem's ethylene plant MPGF and
all HP stages excluding stages 1 and 2 for CP Chem's polyethylene plant
MPGF must have at least two pilots with a continuously lit pilot flame.
Each pilot flame must be continuously monitored by a thermocouple or
any other equivalent device used to detect the presence of a flame. The
time, date, and duration of any complete loss of pilot flame on any of
the individual MPGF burners on HP stages 1 and 2 of CP Chem's
polyethylene plant MPGF, on any of the HP stages of CP Chem's ethylene
plant MPGF and on any of the HP stages excluding stages 1 and 2 of CP
Chem's polyethylene plant MPGF must be recorded. Each monitoring device
must be maintained or replaced at a frequency in accordance with the
manufacturer's specifications.
(3) The MPGF system shall be operated with no visible emissions
except for periods not to exceed a total of 5 minutes during any 2
consecutive hours. A video camera that is capable of continuously
recording (i.e., at least one frame every 15 seconds with time and date
stamps) images of the flare flame and a reasonable distance above the
flare flame at an angle suitable for visible emissions observations
must be used to demonstrate compliance with this requirement. The owner
or operator must provide real-time video surveillance camera output to
the control room or other continuously manned location where the video
camera images may be viewed at any time.
(4) The operator of an MPGF system shall install and operate
pressure monitor(s) on the main flare header, as well as a valve
position indicator monitoring system capable of monitoring and
recording the position for each staging valve to ensure that the MPGF
operates within the range of tested conditions or within the range of
the manufacturer's specifications. The pressure monitor shall meet the
requirements in Table 3. Maintenance periods, instrument adjustments or
checks to maintain precision and accuracy, and zero and span
adjustments may not exceed 5 percent of the time the flare is receiving
regulated material.
(5) Recordkeeping Requirements
(a) All data must be recorded and maintained for a minimum of 3
years or for as long as required under applicable rule subpart(s),
whichever is longer.
(6) Reporting Requirements
(a) The information specified in section III (6)(b) and (c) below
must be reported in the timeline specified by the applicable rule
subpart(s) for which the MPGF will control emissions.
(b) Owners or operators shall include the following information in
their initial Notification of Compliance status report:
(i) Specify flare design as a pressure-assisted MPGF. CP Chem's
polyethylene plant shall also clearly note that HP stages 1 and 2 are
also steam-assisted.
(ii) All visible emission readings, NHVcz and/or LFLcz
determinations, and flow rate measurements. For MPGF, exit velocity
determinations do not need to be reported as the maximum permitted
velocity requirements in the General Provisions at 40 CFR 60.18(b) and
40 CFR 63.11(b) are not applicable.
(iii) All periods during the compliance determination when a
complete loss of pilot flame on any stage of MPGF burners occurs, and,
for HP stages 1 and 2 of CP Chem's polyethylene plant MPGF, all periods
during the compliance determination
[[Page 16399]]
when a complete loss of pilot flame on an individual burner occurs.
(iv) All periods during the compliance determination when the
pressure monitor(s) on the main flare header show the MPGF burners
operating outside the range of tested conditions or outside the range
of the manufacturer's specifications.
(v) All periods during the compliance determination when the
staging valve position indicator monitoring system indicates a stage of
the MPGF should not be in operation and is or when a stage of the MPGF
should be in operation and is not.
(c) The owner or operator shall notify the Administrator of periods
of excess emissions in their Periodic Reports. These periods of excess
emissions shall include:
(i) Records of each 15-minute block for all HP stages of CP Chem's
ethylene plant MPGF and for all HP stages excluding stages 1 and 2 of
CP Chem's polyethylene plant MPGF during which there was at least 1
minute when regulated material was routed to the MPGF and a complete
loss of pilot flame on a stage of burners occurred, and, for HP stages
1 and 2 of CP Chem's polyethylene plant MPGF, records of each 15-minute
block during which there was at least 1 minute when regulated material
was routed to the MPGF and a complete loss of pilot flame on an
individual burner occurred.
(ii) Records of visible emissions events (including the time and
date stamp) that exceed more than 5 minutes in any 2-hour consecutive
period.
(iii) Records of each 15-minute block period for which an
applicable combustion zone operating limit (i.e., NHVcz or
LFLcz) is not met for the MPGF when regulated material is
being combusted in the flare. Indicate the date and time for each
period, the NHVcz and/or LFLcz operating
parameter for the period and the type of monitoring system used to
determine compliance with the operating parameters (e.g., gas
chromatograph or calorimeter). For CP Chem's polyethylene plant MPGF,
also indicate which HP stages were in use.
(iv) Records of when the pressure monitor(s) on the main flare
header show the MPGF burners are operating outside the range of tested
conditions or outside the range of the manufacturer's specifications.
Indicate the date and time for each period, the pressure measurement,
the stage(s) and number of MPGF burners affected, and the range of
tested conditions or manufacturer's specifications.
(v) Records of when the staging valve position indicator monitoring
system indicates a stage of the MPGF should not be in operation and is
or when a stage of the MPGF should be in operation and is not. Indicate
the date and time for each period, whether the stage was supposed to be
open, but was closed or vice versa, and the stage(s) and number of MPGF
burners affected.
IV. Request for Comments
We solicit comments on all aspects of CP Chem's request for
approval of an AMEL for the standards specified in Table 1. We
specifically seek comment regarding whether or not the alternative
operating requirements listed in section III above will achieve
emission reductions at least equivalent to the provisions in the NSPS
and NESHAP presented in Table 1 that require flares to meet the
requirements in 40 CFR 63.11(b) and 40 CFR 60.18(b).
Dated: March 14, 2017.
Stephen Page,
Director, Office of Air Quality Planning and Standards.
[FR Doc. 2017-06597 Filed 4-3-17; 8:45 am]
BILLING CODE 6560-50-P
