Table 3 shows the changes in costs, benefits, and additional cost
savings from the NPRM to the Final Rule. As can be seen, costs have
been reduced, benefits increased and cost savings increased as a result
of the changes delineated in Table 1. Few comments questioned cost
estimates from the NPRM, and thus the original regulatory assessment is
largely retained.

                      Table 3--Comparison of Final Rule and NPRM Impacts (7% Discount Rate)
----------------------------------------------------------------------------------------------------------------
                                                                                Additional cost
                                                                  Cost            Benefits           savings
----------------------------------------------------------------------------------------------------------------
NPRM......................................................        $8,822,113        $1,944,359        $5,228,965
Final Rule................................................         6,864,404         2,791,303         6,120,064
----------------------------------------------------------------------------------------------------------------

    The final rule amends several existing regulations and these
amendments permit cost savings to the regulated public. Cost savings
would result from the removal of the requirement on standards for flame
arresters (33 CFR part 154, Appendix B). Additionally, the various
changes preclude the need for the regulated public to continue to file
exemption requests, which saves administrative labor and research. The
final rule removes the requirement for a separate overfill control
panel on the dock (33 CFR 154.2102, 46 CFR 39.2009). The provisions
include an alternative test program for compliance with the VCS
analyzer and pressure sensor safety testing requirements. The final
rule allows an alternative method of compliance with testing and
inspection requirements of 33 CFR 156.170. The final rule's changes on
enrichment requirements would benefit the regulated public by
necessitating the use of less enriching gas. As well, the Coast Guard
estimates the final rule would benefit the public by preventing marine
casualties.
Affected Population
    Based on Coast Guard data, we estimate that this final rule affects
280 facilities with VCSs, 24 CEs, 15 TBCFs, 216 U.S.-flagged tank barge
owners, and owners of 338 foreign-flagged tank barges.
Costs
    The final rule requires several actions by affected parties. These
actions include training, periodic operational reviews, and
recertifications. Over a 10-year period of analysis, we estimate the
total present value cost of the final rule to be $6.86 million at a 7
percent discount rate, and $8.08 million at a 3 percent discount rate.
Over the same 10-year period of analysis, we estimate the annualized
cost of the final rule to be $977,000 (rounded to nearest thousand) at
7 percent and $947,000 (rounded) at 3 percent. The following table
presents, by year, the costs of the final rule.

                                     Table 4--Estimated Costs of Final Rule
----------------------------------------------------------------------------------------------------------------
                          Year                             Discounted 7%      Discounted 3%       Undiscounted
----------------------------------------------------------------------------------------------------------------
1......................................................         $2,219,312         $2,305,498         $2,374,663
2......................................................            657,334            709,380            752,581
3......................................................            614,330            688,718            752,581
4......................................................            574,141            668,659            752,581
5......................................................            548,859            664,039            769,803
6......................................................            512,952            644,698            769,803
7......................................................            479,394            625,920            769,803
8......................................................            448,032            607,689            769,803
9......................................................            418,722            589,990            769,803
10.....................................................            391,329            572,806            769,803
                                                        --------------------------------------------------------
    Total..............................................          6,864,404          8,077,397          9,251,224
                                                        --------------------------------------------------------
        Annualized.....................................            977,337            946,917            925,122
----------------------------------------------------------------------------------------------------------------

    We estimate the requirements for facilities as the primary cost
driver throughout the 10-year period of analysis. The requirements for
facilities range from certifications, recertifications, and periodic
operational reviews. Table 5 shows a summary of annualized costs by
requirement category.

       Table 5--Summary of the Annualized Costs of the Final Rule
                                   [$]
------------------------------------------------------------------------
                                                       Annualized *
                    Category                     -----------------------
                                                      7%          3%
------------------------------------------------------------------------
Facility Costs..................................    $751,190   $ 738,358
TBCF Costs......................................     110,926     103,646
Tank Barge Costs................................     111,390     101,524
Government Costs................................       3,831       3,389
                                                 -----------------------
  Total.........................................     977,337     946,917
------------------------------------------------------------------------
* Rounded to the nearest dollar.

    The final rule's changes that require the regulated public to
follow operational changes such as certifications, recertifications,
and periodic operational reviews comprise approximately 58 percent of
the costs throughout the 10-year period of analysis. The final rule's
changes to require training, including amendments to PIC training,
amount to 20 percent of the total costs. Table 6 presents a summary of
the costs by requirement as a percentage of the total annualized costs
of the final rule.

       Table 6--Summary of Costs by Requirement of the Final Rule
                  [As a percentage of annualized cost]
------------------------------------------------------------------------
                                                              Annualized
                        Requirements                             cost
                                                               (percent)
------------------------------------------------------------------------
Operations Cost.............................................          58
Protection Equipment........................................          10
Training including PIC......................................          20
Misc other including government and pigging.................          12
                                                             -----------
  Total (rounded to the nearest one)........................         100
------------------------------------------------------------------------

Benefits
    The final rule amends existing regulations regarding VCSs in marine
activities. We are issuing these amendments to existing standards to
reflect technological improvements and to promote maritime safety and
marine environmental protection. The final rule offers provisions for
more practicable and efficient management of hazardous materials, and
contains some provisions that offer facilities the opportunity to
reduce maintenance costs.
    The final rule provides several benefits. Benefits of the final
rule include (1) Energy savings which would accrue from the use of less
enriching gas, (2) avoided costs associated with the elimination of
existing standards on liquid seal and (3) prevented casualties. Other
benefits that USCG describes qualitatively include operational
efficiency and enhanced safety. USCG estimates the 10-year quantified
benefits to be at least $2.79 million (7 percent discount rate).
    In addition to these benefits, we estimate that the final rule will
result in additional cost savings to the regulated public and the
Government. These cost savings derive from tasks which would no longer
have to be performed due to the final rule's changes and changes to
various operational requirements which result in less resources being
used. For regulated entities, the cost savings over

a 10-year period are estimated to be $5.96 million (7 percent discount
rate) and Government cost savings are estimated to be $164,000 (7
percent discount rate, rounded to the nearest thousand).
    See the final Regulatory Analysis available in the docket for a
detailed analysis of the costs and benefits of this rulemaking.
    The Coast Guard considered the following alternatives when
developing the final rule:
    1. Take no action.
    2. Adopt all CTAC recommendations.
    3. Issue a new policy letter or NVIC.
    4. Require annual certifications.
    5. Develop a different timetable for small entities.
    6. Provide an exemption for small entities (from the rule or any
part thereof).
    Alternatives 1 and 2 are not preferred because they do not offer
solutions to issues identified earlier in the preamble. They also do
not allow for cost savings opportunities that arise from changes in the
final rule. Alternative 3 communicates information to the regulated
public, and although it would potentially increase public safety, it
would not allow for cost savings opportunities outlined in the final
rule, nor would it update the regulatory text. As such, it offers no
assurance of compliance and no enforcement mechanism. Alternative 4 is
feasible but costly. It is not anticipated to increase benefits or to
increase cost savings despite its higher cost. Alternative 5 offers all
benefits and cost savings of the final rule, albeit at a later date.
Because of the benefits and cost savings, a delay serves no useful
purpose to the regulated public. For some regulated entities such as
facilities and tank barge owners, the final rule offers a delayed
effective date and some provisions do not accrue costs immediately;
also, other provisions do not apply unless specific changes to VCSs
warrant them (e.g., recertifications). Alternative 6 is feasible. The
Coast Guard notes that many final provisions do not apply to some small
entities since they are either already in compliance or will benefit
from the changes in the final rule. The final changes are low in cost
on the individual level and have a low implementation burden. An
exemption would preclude small entities from pursuing cost savings that
would be provided by the final rule. A small business exemption would
cause both costs and benefits as well as cost savings to decline in
total for the regulated public. These small entities face many of the
same environmental and safety hazards other business entities face; and
these final requirements would address these hazards. Without them,
there would be an uncompensated risk to small entities and their
employees. Because this is a safety regulation and because of the
continued safety hazards, such an alternative represents a
disproportionate tolerance of risks to safety, and the Coast Guard
could not pursue this option.

B. Small Entities

    Under the Regulatory Flexibility Act (5 U.S.C. 601-612), we have
considered whether this final rule would have a significant economic
impact on a substantial number of small entities. The term ``small
entities'' comprises small businesses, not-for-profit organizations
that are independently owned and operated and are not dominant in their
fields, and governmental jurisdictions with populations of less than
50,000.
    A combined final Regulatory Analysis and Regulatory Flexibility
Analysis discussing the impact of this final rule on small entities is
available in the docket as indicated in the ADDRESSES section of this
preamble.
    Based on our analysis, we estimate that small entities affected by
this final rule are primarily small businesses consisting of CEs,
owners and operators of TBCFs, tank barges, and facilities with VCSs.
We did not find data to suggest small not-for-profit organizations or
small government entities will be directly affected by this final rule.
In addition, CEs will incur no additional costs due to this final rule
because no additional tasks or equipment are required of them;
therefore, they are not analyzed further. We evaluated the impact on
small entities for each segment of industry that incur additional
costs, since this final rule requires different provisions for owners
and operators of TBCFs, tank barges, and facilities with VCSs.
    Based on our assessment, 54 percent of tank barge owners affected
by this final rule will be considered small by Small Business
Administration (SBA) size standards. We estimate 100 percent of these
small entities will incur cost impacts that are 1 percent or less than
their annual revenues during the highest cost year (implementation
year), as well as annually.
    We estimate 15 percent of facilities with VCSs will be considered
small by SBA size standards. We estimate that almost 86 percent of
these small entities will incur annual cost impacts that are 1 percent
or less than their annual revenues during the highest cost year
(implementation year), as well as annually. Another 14 percent will
have cost impacts between 1 to 3 percent of their annual revenue.
    We estimate that all of the TBCFs are considered small by SBA size
standards. We estimate 60 percent of these TBCFs will incur cost
impacts that are potentially greater than 3 percent of their annual
revenues during the highest cost year (implementation year). It should
be noted that the final rule will codify existing voluntary standards
for TBCFs. Consequently, we anticipate the cost impacts to TBCFs may be
overestimates.
    Consequently, we believe there will be no significant economic
impacts for CEs, facilities with VCSs, and owners/operators of tank
barges. However, there may be economic impacts for some TBCFs.

C. Assistance for Small Entities

    Under section 213(a) of the Small Business Regulatory Enforcement
Fairness Act of 1996 (Pub. L. 104-121), we offered to assist small
entities in understanding this final rule so that they could better
evaluate its effects on them and participate in the rulemaking. If the
final rule will affect your small business, organization, or
governmental jurisdiction and you have questions concerning its
provisions or options for compliance, please consult Ms. Sara Ju at the
address listed under ADDRESSES. The Coast Guard will not retaliate
against small entities that question or complain about this final rule
or any policy or action of the Coast Guard.
    Small businesses may send comments on the actions of Federal
employees who enforce, or otherwise determine compliance with, Federal
regulations to the Small Business and Agriculture Regulatory
Enforcement Ombudsman and the Regional Small Business Regulatory
Fairness Boards. The Ombudsman evaluates these actions annually and
rates each agency's responsiveness to small business. If you wish to
comment on actions by employees of the Coast Guard, call 1-888-REG-FAIR
(1-888-734-3247).

D. Collection of Information

    This final rule requires an amendment to an existing collection of
information (1625-0060) as defined by the Paperwork Reduction Act of
1995 (44 U.S.C. 3501-3520). As defined in 5 CFR 1320.3(c), ``collection
of information'' comprises reporting, recordkeeping, monitoring,
posting, labeling, and other similar actions. The title and description
of the information collections, a description of those who must collect
the information, and an estimate of the total annual burden follow. The
estimate covers the time for

reviewing instructions, searching existing sources of data, gathering
and maintaining the data needed, and completing and reviewing the
collection.
    Title: Vapor Control Systems for Facilities and Tank Vessels.
    OMB Control Number: 1625-0060.
    Summary of the Collection of Information: This collection of
information ensures industry compliance with safety standards for VCSs.
The final rule requires recordkeeping and reporting on the design and
use of VCSs. The final rule contains collection of information
requirements which include: Certifications, recertifications, periodic
operational reviews, approval requests, reviews of operating manuals,
failure analyses, operational review letters, and relabeling. The
collection of information will aid the Coast Guard and industry in
assuring safe practices associated with VCSs.
    Need for Information: The Coast Guard needs this information to
ensure industry use of VCS requirements are compatible with new Federal
and State environmental requirements, to reflect industry advances in
VCS technology, and to ensure the safe design and operation of a VCS at
a TBCF.
    Final Use of Information: The Coast Guard will use this information
to determine whether an entity meets the statutory requirements.
    Description of the Respondents: The respondents are owners/
operators of TBCFs, facilities, and tank vessels with vapor control
systems. Reporting and recordkeeping requirements will be completed by
facility and vessel owners/operators, PICs, engineers, maintenance
workers, and operations managers of affected tank barges, TBCFs,
facilities, and CEs.
    Number of Respondents: The burden change of this collection of
information includes certifications, recertifications, approval
requests, reviewing operating manuals, preparing operational review
letters, and relabeling. This collection of information applies to
various owners and operators of tank barges, facilities, TBCFs, and
CEs. We estimate the total number of respondents is 535.
    Frequency of Responses: This final rule will vary the number of
responses each year by requirement. Some actions are one time only and
others are required more frequently.
    Burden of Response: This collection of information applies to CEs,
tank barge owners/operators and owners/operators of facilities with
VCSs. The Coast Guard estimates the total number of respondents is 535.
The burden of response varies by collection of information requirement.
    Estimate of Total Annual Burden: The total annual burden is
estimated to increase as a result of the final rule by 8,041 hours from
the previously approved 2,789 hours.
    As required by the Paperwork Reduction Act of 1995 (44 U.S.C.
3507(d)), we will submit a copy of this final rule to OMB for its
review of the collection of information.
    You are not required to respond to a collection of information
unless it displays a currently valid control number from OMB. Before
the Coast Guard can enforce the collection of information requirements
in this final rule, OMB must approve the action.

E. Federalism

    A rule has implications for federalism under E.O. 13132,
Federalism, if it has a substantial direct effect on the States, on the
relationship between the national government and the States, or on the
distribution of power and responsibilities among the various levels of
government. In our NPRM, found at 75 FR 65152, we previously stated
that this rule had no implications for federalism. We have re-evaluated
this rule under E.O. 13132 and under the authorities granted to the
Coast Guard to promulgate regulations concerning marine vapor control
systems and now conclude that certain provisions of these regulations
do have implications for federalism. Our analysis follows.
    For those regulations promulgated under the authority of 46 U.S.C.
3306, there are no implications for federalism. It is well settled that
States may not regulate in categories reserved for regulation by the
Coast Guard. It is also well settled, now, that all of the categories
covered in 46 U.S.C. 3306, 3703, 7101, and 8101 (design, construction,
alteration, repair, maintenance, operation, equipping, personnel
qualification, and manning of vessels) are within the fields foreclosed
from regulation by the States. (See the decision of the Supreme Court
in the consolidated cases of United States v. Locke and Intertanko v.
Locke, 529 U.S. 89, 120 S.Ct. 1135 (March 6, 2000).) Under 46 U.S.C.
3703, Congress directed the Secretary to prescribe equipment
regulations for tank vessels necessary to protect against hazards to
life, property, and the marine environment, as well as to navigation
and vessel safety. Provisions of these regulations, promulgated under
the authority of 46 U.S.C. 3703, increase operational safety and the
protection of the marine environment by setting the standards for the
use, design, and installation of vapor control systems on inspected
vessels. Because States may not promulgate rules within this category,
there are no implications for federalism under Executive Order 13132.
    For those regulations promulgated under the authority of 42 U.S.C.
7511b(f)(2), these provisions do have implications for federalism. It
is clear that Congress intended these regulations to have limited
preemptive effect over state or local law based on the language found
in 42 U.S.C. 7511b(f)(2). In this section, Congress mandated the Coast
Guard to issue regulations to ``ensure the safety of the equipment and
operations which are to control emissions from the loading and
unloading of tank vessels, under section 3703 of title 46 and section
1225 of title 33.'' Congress further explained that any standards for
the emission of VOCs established by a ``State or political subdivision
regarding emissions from the loading and unloading of tank vessels
shall be consistent with the regulations regarding safety of the
Department in which the Coast Guard is operating.'' In choosing this
language, and specifically including section 1225 of title 33, Congress
expressly intended Coast Guard regulations to preempt State or local
laws or regulations regarding emission control equipment and procedures
for waterfront facilities transferring oil or hazardous materials, but
only in so far as a State or local law or regulation conflicts with the
federal regulation.

F. Unfunded Mandates Reform Act

    The Unfunded Mandates Reform Act of 1995 (2 U.S.C. 1531-1538)
requires Federal agencies to assess the effects of their discretionary
regulatory actions. In particular, the Act addresses actions that may
result in the expenditure by a State, local, or Tribal government, in
the aggregate, or by the private sector of $100,000,000 (adjusted for
inflation) or more in any 1 year. Though this final rule will not
result in such an expenditure, we do discuss the effects of this final
rule elsewhere in this preamble.

G. Taking of Private Property

    This final rule will not cause a taking of private property or
otherwise have taking implications under E.O. 12630, Governmental
Actions and Interference with Constitutionally Protected Property
Rights.

H. Civil Justice Reform

    This final rule meets applicable standards in sections 3(a) and
3(b)(2) of E.O. 12988, Civil Justice Reform, to

minimize litigation, eliminate ambiguity, and reduce burden.

I. Protection of Children

    We have analyzed this final rule under E.O. 13045, Protection of
Children from Environmental Health Risks and Safety Risks. This final
rule is not an economically significant rule and will not create an
environmental risk to health or risk to safety that might
disproportionately affect children.

J. Tribal Governments

    This final rule does not have Tribal implications under E.O. 13175,
Consultation and Coordination with Indian Tribal Governments, because
it does not have a substantial direct effect on one or more Indian
tribes, on the relationship between the Federal Government and Indian
tribes, or on the distribution of power and responsibilities between
the Federal Government and Indian tribes.

K. Energy Effects

    We have analyzed this final rule under E.O. 13211, Actions
Concerning Regulations That Significantly Affect Energy Supply,
Distribution, or Use. We have determined that it is not a ``significant
energy action'' under that E.O. because it is not a ``significant
regulatory action'' under E.O. 12866 and is not likely to have a
significant adverse effect on the supply, distribution, or use of
energy. The Administrator of the Office of Information and Regulatory
Affairs has not designated it as a significant energy action.
Therefore, this final rule does not require a Statement of Energy
Effects under E.O. 13211.

L. Technical Standards

    The National Technology Transfer and Advancement Act (15 U.S.C. 272
note) directs agencies to use voluntary consensus standards in their
regulatory activities unless the agency provides Congress, through the
Office of Management and Budget, with an explanation of why using these
standards would be inconsistent with applicable law or otherwise
impractical. Voluntary consensus standards are technical standards
(e.g., specifications of materials, performance, design, or operation;
test methods; sampling procedures; and related management systems
practices) that are developed or adopted by voluntary consensus
standards bodies.
    This final rule uses voluntary consensus standards from the
following organizations: American Petroleum Institute, American
National Standards Institute, ASTM, International Electrotechnical
Commission, National Electrical Manufacturers Association, National
Fire Protection Association, Oil Companies International Marine Forum,
and Underwriters Laboratories, Inc. This final rule also uses technical
standards other than voluntary consensus standards from the
International Maritime Organization. The sections that reference these
standards and the locations of these standards are listed in 33 CFR
154.106 and 46 CFR 39.1005.

M. Environment

    We have analyzed this final rule under Department of Homeland
Security Management Directive 023-01 and Commandant Instruction
M16475.lD, which guide the Coast Guard in complying with the National
Environmental Policy Act of 1969 (42 U.S.C. 4321-4370f), and have
concluded that this action is one of a category of actions that do not
individually or cumulatively have a significant effect on the human
environment. This final rule is categorically excluded under section
2.B.2, figure 2-1, paragraph (34)(d) of the Instruction and under
section 6(a) of the ``Appendix to National Environmental Policy Act:
Coast Guard Procedures for Categorical Exclusions, Notice of Final
Agency Policy'' (67 FR 48244, July 23, 2002). This final rule involves
regulations concerning vessel operation safety standards and safety
equipment. An environmental analysis checklist and a categorical
exclusion determination are available in the docket where indicated
under ADDRESSES.

List of Subjects

33 CFR Part 154

    Alaska, Fire prevention, Hazardous substances, Incorporation by
reference, Oil pollution, Reporting and recordkeeping requirements.

33 CFR Part 155

    Alaska, Hazardous substances, Oil pollution, Reporting and
recordkeeping requirements.

33 CFR Part 156

    Hazardous substances, Oil pollution, Reporting and recordkeeping
requirements, Water pollution control.

46 CFR Part 35

    Cargo vessels, Marine safety, Navigation (water), Occupational
safety and health, Reporting and recordkeeping requirements, Seamen.

46 CFR Part 39

    Cargo vessels, Fire prevention, Hazardous materials transportation,
Incorporation by reference, Marine safety, Occupational safety and
health, Reporting and recordkeeping requirements.
    For the reasons discussed in the preamble, the Coast Guard amends
33 CFR parts 154, 155, and 156, and 46 CFR parts 35 and 39 as follows:

Title 33

PART 154--FACILITIES TRANSFERRING OIL OR HAZARDOUS MATERIAL IN BULK

0
1. The authority citation for part 154 is revised to read as follows:

    Authority:  33 U.S.C. 1225, 1231, 1321(j)(1)(C), (j)(5), (j)(6),
and (m)(2); sec. 2, E.O. 12777, 56 FR 54757; Department of Homeland
Security Delegation No. 0170.1. Subpart F is also issued under 33
U.S.C. 2735. Vapor control recovery provisions of Subpart P are also
issued under 42 U.S.C. 7511b(f)(2).

0
2. Revise Sec.  154.106 to read as follows:

Sec.  154.106  Incorporation by reference.

    (a) Certain material is incorporated by reference (IBR) into this
part with the approval of the Director of the Federal Register under 5
U.S.C. 552(a) and 1 CFR part 51. To enforce any edition other than that
specified in this section, the Coast Guard must publish a notice of
change in the Federal Register and the material must be available to
the public. All approved material is available for inspection at the
Coast Guard, Office of Design and Engineering Standards (CG-ENG), 2100
2nd Street SW., Stop 7126, Washington, DC 20593-7126, telephone 202-
372-1418 and at the National Archives and Records Administration
(NARA). For information on the availability of this material at NARA,
call<PHONE_NUMBER> or go to http://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html. Also, it is
available from the sources indicated in this section.
    (b) American National Standards Institute (ANSI), 25 West 43rd
Street, 4th floor, New York, NY 10036.
    (1) ANSI B16.5, Steel Pipe Flanges and Flanged Fittings, 1988, IBR
approved for Sec. Sec.  154.500(d), 154.2100(b), 154.2101(d),
154.2202(d), and Appendix A, 7.3 to part 154.
    (2) ANSI B16.24, Bronze Pipe Flanges and Flange Fittings Class 150
and 300, 1979, IBR approved for Sec. Sec.  154.500(d) and 154.2100(b).
    (3) ANSI B31.3, Chemical Plant and Petroleum Refinery Piping, 1987
(including B31.3a-1988, B31.3b-1988, and B31.3c-1989 addenda), IBR

approved for Sec. Sec.  154.510(a) and 154.2100(b).
    (c) American Petroleum Institute (API), 1220 L Street NW.,
Washington, DC 20005.
    (1) API Standard 2000, Venting Atmospheric and Low-Pressure Storage
Tanks (Non-refrigerated and Refrigerated), Third Edition, January 1982
(reaffirmed December 1987)(``API 2000''), IBR approved for Sec. Sec.
154.2103(j) and 154.2203(e), (k), and (l).
    (2) API Recommended Practice 550, Manual on Installation of
Refinery Instruments and Control Systems, Part II--Process Stream
Analyzers, Section 1--Oxygen Analyzers, Fourth Edition, February 1985
(``API 550''), IBR approved for Sec.  154.2107(f).
    (d) American Society of Mechanical Engineers (ASME), Three Park
Avenue, New York, NY 10016.
    (1) ASME B16.34 -2004, Valves--Flanged, Threaded, and Welding End,
issued September 2, 2005, IBR approved for Sec.  154.2100(b).
    (2) [Reserved]
    (e) ASTM International (ASTM), 100 Barr Harbor Drive, West
Conshohocken, PA 19428-2959.
    (1) ASTM F631-93, Standard Guide for Collecting Skimmer Performance
Data in Controlled Environments (``ASTM F631''), IBR approved for
Appendix C, 6.3 to part 154.
    (2) ASTM F715-95, Standard Test Methods for Coated Fabrics Used for
Oil Spill Control and Storage (``ASTM F715''), IBR approved for
Appendix C, 2.3.1 to part 154.
    (3) ASTM F722-82 (Reapproved 2008), Standard Specification for
Welded Joints for Shipboard Piping Systems (``ASTM F722''), approved
November 1, 2008, IBR approved for Appendix A, 8.4, 8.6 to part 154.
    (4) ASTM F1122-87 (Reapproved 1992), Standard Specification for
Quick Disconnect Couplings (``ASTM F1122''), IBR approved for Sec.
154.500(d).
    (5) ASTM F1155-98, Standard Practice for Selection and Application
of Piping System Materials (``ASTM F1155''), IBR approved for Appendix
A, 7.1, 8.4 to part 154.
    (6) ASTM F1273-91 (Reapproved 2007) Standard Specification for Tank
Vent Flame Arresters (``ASTM F1273''), approved December 1, 2007, IBR
approved for Sec. Sec.  154.2001 and 154.2105(j).
    (f) International Electrotechnical Commission (IEC), Bureau Central
de la Commission Electrotechnique Internationale, 3, rue de
Varemb[eacute], P.O. Box 131, CH--1211 Geneva 20, Switzerland.
    (1) IEC 60309-1 Plugs, Socket-Outlets and Couplers for Industrial
Purposes--Part 1: General Requirements, Edition 4.2 2012-06, IBR
approved for Sec.  154.2102(b).
    (2) IEC 60309-2 Plugs, Socket-Outlets and Couplers for Industrial
Purposes--Part 2: Dimensional Interchangeability Requirements for Pin
and Contact-tube Accessories, Edition 4.2 2012-05, IBR approved for
Sec.  154.2102(b).
    (g) National Electrical Manufacturers Association (NEMA), 1300
North 17th Street, Suite 1752, Rosslyn, VA 22209.
    (1) ANSI NEMA WD-6--Wiring Devices, Dimensional Requirements, 1988
(``NEMA WD-6''), IBR approved for Sec.  154.2102(a).
    (2) [Reserved]
    (h) National Fire Protection Association (NFPA), 1 Batterymarch
Park, Quincy, MA 02169-7471.
    (1) NFPA 51B, Standard for Fire Prevention in Use of Cutting and
Welding Processes, 1994, IBR approved for Sec.  154.735(l).
    (2) NFPA 70, National Electrical Code, 1987 (``NFPA 70 (1987)''),
IBR approved for Sec.  154.735(q).
    (3) NFPA 70, National Electrical Code, 2011 (``NFPA 70 (2011)''),
IBR approved for Sec. Sec.  154.2100(c) and 154.2102(a).
    (i) Oil Companies International Marine Forum (OCIMF), 29 Queen
Anne's Gate, London, SW1H 9BU, England.
    (1) International Safety Guide for Oil Tankers and Terminals, Fifth
Ed., 2006 (``ISGOTT''), IBR approved for Sec. Sec.  154.735(s),
154.2101(g), and 154.2203(m).
    (2) [Reserved]
    (j) Underwriters Laboratories, Inc. (UL), 333 Pfingsten Road,
Northbrook, IL 60062.
    (1) UL 525 Standard for Flame Arresters, 8th Edition, May 9, 2008,
IBR approved for Sec. Sec.  154.2001 and 154.2105(j).
    (2) [Reserved]

0
3. In Sec.  154.310, revise paragraph (b) to read as follows:

Sec.  154.310  Operations manual: Contents.

* * * * *
    (b)(1) The operations manual must contain a description of the
facility's vapor control system (VCS), if the facility--
    (i) Collects vapor emitted from vessel cargo tanks for recovery,
destruction, or dispersion; or
    (ii) Balances or transfers vapor to or from vessel cargo tanks.
    (2) The VCS description required by paragraph (b)(1) of this
section must include a line diagram or simplified piping and
instrumentation diagram (P&ID) of the facility's VCS piping, including
the location of each valve, control device, pressure-vacuum relief
valve, pressure indicator, flame arrester, and detonation arrester;
    (3) The VCS description required by paragraph (b)(1) of this
section must describe the design and operation of its--
    (i) Vapor line connection;
    (ii) Startup and shutdown procedures;
    (iii) Steady-state operating procedures;
    (iv) Provisions for dealing with pyrophoric sulfide (for facilities
which handle inerted vapors of cargoes containing sulfur);
    (v) Alarms and shutdown devices; and
    (vi) Pre-transfer equipment inspection requirements.
    (4) The VCS description required by paragraph (b)(1) of this
section must include all test procedures and a checklist for use during
the testing of the VCS required by 33 CFR 156.170(g). The test
procedures must specify--
    (i) All tests required for initial certification under 33 CFR
154.2022(d);
    (ii) All components that are to be tested; and
    (iii) Procedures for testing each component.
    (5) The VCS description required by paragraph (b)(1) of this
section must include--
    (i) A list of all cargoes the VCS is approved to control; and
    (ii) Copies of any Coast Guard letters exempting the VCS from
regulatory requirements.
    (6) The VCS description required by paragraph (b)(1) of this
section must include detailed operating instructions for a cargo line
clearance system as described in 33 CFR 154.2104, if such a system is
used by a facility;
    (7) The VCS description required by paragraph (b)(1) of this
section must include the following for a tank barge cleaning facility:
    (i) A physical description of the facility and facility plan
showing mooring areas, locations where cleaning operations are
conducted, control stations, and locations of safety equipment;
    (ii) The sizes, types, and number of tank barges from which the
facility can conduct cleaning operations simultaneously; and
    (iii) The minimum number of persons required to be on duty during
cleaning operations and the duties of each.
* * * * *

0
4. Revise Sec.  154.500 to read as follows:

Sec.  154.500  Hose assemblies.

    Each hose assembly used for transferring oil or hazardous material
must meet the following requirements:

    (a) The minimum design burst pressure for each hose assembly must
be at least four times the sum of the pressure of the relief valve
setting (or four times the maximum pump pressure when no relief valve
is installed) plus the static head pressure of the transfer system, at
the point where the hose is installed.
    (b) The maximum allowable working pressure (MAWP) for each hose
assembly must be more than the sum of the pressure of the relief valve
setting (or the maximum pump pressure when no relief valve is
installed) plus the static head pressure of the transfer system, at the
point where the hose is installed.
    (c) Each nonmetallic hose must be usable for oil or hazardous
material service.
    (d) Each hose assembly must either have--
    (1) Full threaded connections;
    (2) Flanges that meet ANSI B16.5 or ANSI B16.24 (both incorporated
by reference, see 33 CFR 154.106); or
    (3) Quick-disconnect couplings that meet ASTM F1122 (incorporated
by reference, see 33 CFR 154.106).
    (e) Each hose must be marked with one of the following:
    (1) The name of each product for which the hose may be used; or
    (2) For oil products, the words ``OIL SERVICE''; or
    (3) For hazardous materials, the words ``HAZMAT SERVICE--SEE LIST''
followed immediately by a letter, number or other symbol that
corresponds to a list or chart contained in the facility's operations
manual or the vessel's transfer procedure documents which identifies
the products that may be transferred through a hose bearing that
symbol.
    (f) Each hose also must be marked with the following, except that
the information required by paragraphs (f)(2) and (3) of this section
need not be marked on the hose if it is recorded in the hose records of
the vessel or facility, and the hose is marked to identify it with that
information:
    (1) Maximum allowable working pressure;
    (2) Date of manufacture; and
    (3) Date of the latest test required by 33 CFR 156.170.
    (g) The hose burst pressure and the pressure used for the test
required by 33 CFR 156.170 must not be marked on the hose and must be
recorded elsewhere at the facility as described in paragraph (f) of
this section.
    (h) Each hose used to transfer fuel to a vessel that has a fill
pipe for which containment cannot practically be provided must be
equipped with an automatic back pressure shutoff nozzle.

0
5. In Sec.  154.735--
0
a. In paragraph (q), remove the term ``NFPA 70'' and add, in its place,
the words ``NFPA 70 (1987) (incorporated by reference, see 33 CFR
154.106)''; and
0
b. Revise paragraph (s) to read as follows:

Sec.  154.735  Safety requirements.

* * * * *
    (s) Tank-cleaning or gas-freeing operations conducted by the
facility on vessels carrying oil residues or mixtures must be conducted
in accordance with sections 11.3 and 11.4 of OCIMF ISGOTT (incorporated
by reference, see 33 CFR 154.106), except that--
    (1) Prohibitions in ISGOTT against the use of recirculated wash
water do not apply if the wash water is first processed to remove
product residues;
    (2) The provisions in ISGOTT section <IP_ADDRESS> that removal of
sludge, scale, and sediment do not apply if personnel use breathing
apparatuses which protect them from the tank atmosphere; and
    (3) Upon the request of the facility owner or operator in
accordance with 33 CFR 154.107, the COTP may approve the use of
alternate standards to ISGOTT if the COTP determines that the
alternative standards provide an equal level of protection to the
ISGOTT standards.
* * * * *

Sec.  154.740  [Amended]

0
6. In Sec.  154.740--
0
a. In paragraph (g), remove the words ``subpart E'' and replace them
with the words ``subpart P''; and
0
b. In paragraph (i), remove the words ``Sec.  154.804 of this part''
and add, in their place, the citation ``33 CFR 154.2020 through
154.2025''.

Subpart E [Removed]

0
7. Remove subpart E, consisting of Sec. Sec.  154.800 through 154.850.

Subparts J through O [Reserved]

0
8. Add reserved subparts J through O.
0
9. Add subpart P to read as follows:

Subpart P--Marine Vapor Control Systems

General

Sec.
154.2000 Applicability.
154.2001 Definitions.

Certifying Entities

154.2010 Qualifications for acceptance as a certifying entity.
154.2011 Application for acceptance as a certifying entity.

Certification, Recertification, and Operational Review

154.2020 Certification and recertification--owner/operator
responsibilities.
154.2021 Operational review--owner/operator responsibilities.
154.2022 Certification, recertification, or operational review--
certifying entity responsibilities, generally.
154.2023 Recertification--certifying entity responsibilities,
generally.
154.2024 Operational review--certifying entity responsibilities,
generally.
154.2025 Certification, recertification, or operational review--
certifying entity documentation.

Personnel

154.2030 Transfer facilities.
154.2031 Tank barge cleaning facilities.

Transfer Facilities--VCS Design and Installation

154.2100 Vapor control system, general.
154.2101 Requirements for facility vapor connections.
154.2102 Facility requirements for vessel liquid overfill
protection.
154.2103 Facility requirements for vessel vapor overpressure and
vacuum protection.
154.2104 Pigging system.
154.2105 Fire, explosion, and detonation protection.
154.2106 Detonation arresters installation.
154.2107 Inerting, enriching, and diluting systems.
154.2108 Vapor-moving devices.
154.2109 Vapor recovery and vapor destruction units.
154.2110 Vapor balancing requirements.
154.2111 Vapor control system connected to a facility's main vapor
control system.
154.2112 Vapors with potential to polymerize or freeze--Special
requirements.
154.2113 Alkylene oxides--Special requirements.

Transfer Facilities--Operations

154.2150 General requirements.

Alternative Analyzer and Pressure Sensor Reliability Testing

154.2180 Alternative testing program--Generally.
154.2181 Alternative testing program--Test requirements.

Tank Barge Cleaning Facilities--VCS Design and Installation

154.2200 Applicable transfer facility design and installation
requirements.
154.2201 Vapor control system--General requirements.
154.2202 Vapor line connections.
154.2203 Facility requirements for barge vapor overpressure and
vacuum protection.
154.2204 Fire, explosion, and detonation protection.

Tank Barge Cleaning Facilities--Operations

154.2250 General requirements.

General

Sec.  154.2000  Applicability.

    (a) Except as specified by paragraphs (b) through (g) of this
section, this subpart applies to--
    (1) Each facility that controls vapors emitted to or from vessel
cargo tanks;
    (2) A vessel, other than a tank vessel, that has a vapor processing
unit located onboard for recovery, destruction, or dispersion of vapors
from a tank vessel's cargo tanks;
    (3) Certifying entities that review, inspect, test, and certificate
facility vapor control systems (VCSs); or
    (4) A facility VCS that receives cargo vapor from a vessel when the
VCS is connected to a facility's main VCS that serves plant processing
areas, such as tank storage areas or tank truck or railcar loading
areas, unrelated to tank vessel operations. The requirements of this
subpart apply between the vessel vapor connection and the point where
the VCS connects to the facility's main VCS.
    (b) Each facility VCS that began operating on or after July 23,
1990, and that is certified as in compliance with 33 CFR part 154,
subpart E on August 15, 2013, or each existing tank barge cleaning
facility VCS that meets the safety Standards of Navigation and Vessel
Inspection Circular No. 1-96, must comply with 33 CFR part 154, subpart
P by August 15, 2016. Certifications, approvals of alternatives, and
grants of exemption in effect on August 15, 2013, remain in effect
after that date and as specified in the certification, approval, or
grant.
    (c) A facility with a Coast Guard-approved VCS operating prior to
July 23, 1990, must comply with 33 CFR 154.2150 but otherwise need not
comply with this subpart so long as it does not have any design or
configuration alterations after its approval and receives cargo vapor
only from the specific vessels for which it was originally approved.
    (d) A facility that uses a vapor balancing system to transfer vapor
from a railcar or a tank truck to a vessel cargo tank while offloading
the vessel must obtain approval in writing from the Commandant and make
that approval available for Coast Guard inspection upon request.
    (e) A facility that transfers vapor from a facility tank to a cargo
tank of a vessel which is not offloading cargo must obtain approval in
writing from the Commandant and make that approval available for Coast
Guard inspection upon request.
    (f) A tank vessel that has a permanent or portable vapor processing
unit located onboard must comply with applicable requirements of this
subpart and 46 CFR part 39.
    (g) This subpart does not apply to the collection of vapors of
liquefied flammable gases as defined in 46 CFR 30.10-39.
    (h) This subpart does not require a facility or a vessel to control
vapor, or a vessel to take away vapor from facilities; however, if a
facility operates a VCS to control vapor to or from vessels, the
facility must comply with the requirements of this subpart.
    (i) In this subpart, regulatory measurements, whether in the metric
or English system, are sometimes followed by approximate equivalent
measurements in parentheses, which are given solely for the reader's
convenience. Regulatory compliance with the regulatory measurement is
required.

Sec.  154.2001  Definitions.

    As used in this subpart only:
    Ambient temperature means the temperature of the environment in
which an experiment is conducted or in which any physical or chemical
event occurs.
    Barge cargo connection means the point in a barge's cargo system
where it connects with the hose assembly or loading arm used for cargo
transfer.
    Barge vapor connection means the point in a barge's piping system
where it connects to a vapor collection hose or arm. This may be the
same as the barge's cargo connection as it controls vapors during barge
cargo tank-cleaning operations.
    Base loading means a method of inerting, enriching, or diluting
such that sufficient inerting, enriching, or diluting gas, for the
worst concentration of vapor coming from the vessel, is injected into
the vapor line during the entire loading operation so that the vapor
mixture is inerted, enriched, or diluted at the maximum loading rate.
For inerting and enriching systems, ``worst concentration'' means the
vapor stream contains no cargo vapor. For a diluting system, ``worst
concentration'' means the vapor stream is saturated with cargo vapor.
    Captain of the Port (COTP) means the Coast Guard Captain of the
Port as defined in 33 CFR 154.105.
    Certifying entity means an individual or organization accepted by
the Commandant to review plans, data, and calculations for vapor
control system designs and to conduct inspections and observe tests of
vapor control system installations.
    Cleaning operation means any stripping, gas-freeing, or tank-
washing operation of a barge's cargo tanks conducted at a cleaning
facility.
    Combustible liquid means any liquid that has a flashpoint above
80[emsp14][deg]F (as determined from an open-cup tester, as used to
test burning oils) and includes Grade D and Grade E combustible liquids
defined in 46 CFR 30.10-15.
    Commandant means Commandant (CG-ENG), U.S. Coast Guard, 2100 2nd
St. SW., Stop 7126, Washington, DC 20593-7126.
    Detonation arrester means a device that is acceptable to the
Commandant and includes a detonation arrester that is designed, built,
and tested in accordance with Appendix A of this part or by another
method acceptable to the Commandant for arresting flames and
detonations.
    Diluting means introducing a non-flammable, non-combustible, and
non-reactive gas with the objective of reducing the hydrocarbon content
of a vapor mixture to below the lower flammable limit so that it will
not burn.
    Drip leg means a section of piping that extends below piping grade
to collect liquid passing through the vapor line and that has a
diameter no more than the diameter of the pipe in which it is
installed.
    Elevated temperature means the temperature that exceeds 70 percent
of the auto-ignition temperature, in degrees Celsius, of the vapors
being collected.
    Enriching means introducing a flammable gas with the objective of
raising the hydrocarbon content of a vapor mixture above the upper
flammable limit so that it will not burn.
    Existing vapor control system means a vapor control system that
satisfies the requirements of 33 CFR part 154, subpart E as certified
by a certifying entity, or a tank barge cleaning facility vapor control
system that meets the safety Standards of Navigation and Vessel
Inspection Circular No. 1-96 as certified by a certifying entity or
approved by the U.S. Coast Guard, and that began operating prior to
August 15, 2013.
    Facility main vapor control system means a vapor control system
that primarily serves facility processing areas unrelated to tank
vessel operations, such as the plant process, tank storage areas, or
tank truck or railcar loading areas.
    Facility operations manual means the manual required by 33 CFR
154.300, the contents of which are described in 33 CFR 154.310.
    Facility vapor connection means the point in a facility's vapor
collection system where it connects to a vapor collection hose or the
base of a vapor

collection arm and is located at the dock as close as possible to the
tank vessel to minimize the length of the flexible vapor collection
hose, thus reducing the hazards associated with the hose.
    Fail-safe means a piece of equipment or instrument that is designed
such that if any element should fail, it would go to a safe condition.
    Fixed stripping line means a pipe extending to the low point of
each cargo tank, welded through the deck and terminating above the deck
with a valve plugged at the open end.
    Flame arrester means a device that is designed, built, and tested
in accordance with ASTM F 1273 or UL 525 (both incorporated by
reference, see 33 CFR 154.106) for use in end-of-line applications for
arresting flames.
    Flame screen means a fitted single screen of corrosion-resistant
wire of at least 30-by-30 mesh, or two fitted screens, both of
corrosion-resistant wire, of at least 20-by-20 mesh, spaced apart not
fewer than 12.7 millimeters (0.5 inch) or more than 38.1 millimeters
(1.5 inches).
    Flammable liquid means any liquid that gives off flammable vapors
(as determined by flashpoint from an open-cup tester, as used to test
burning oils) at or below a temperature of 80[deg]F, and includes
Grades A, B, and C flammable liquids defined in 46 CFR 30.10-22.
    Fluid displacement system means a system that removes vapors from a
barge's cargo tanks during gas freeing through the addition of an inert
gas or other medium into the cargo tank.
    Fluid injection connection means the point in a fluid displacement
system at which the fixed piping or hose that supplies the inert gas or
other medium connects to a barge's cargo tanks or fixed piping system.
    Gas freeing means the removal of vapors from a tank barge.
    Grade A, B, C, D, or E means any Grade A, B, or C flammable liquid
defined in 46 CFR 30.10-22 or any Grade D or E combustible liquid
defined in 46 CFR 30.10-15.
    High flash point cargoes means Grade E cargoes and cargoes having a
closed-cup flash point higher than 60[deg]C (140[deg]F), carried at a
temperature no higher than 5[deg]C (9[deg]F) below their flash points.
    Inert condition or inerted means the oxygen content of the vapor
space in a tank vessel's cargo tank is reduced to 60 percent or less by
volume of the vapor's minimum oxygen concentration for combustion, or
to 8 percent by volume or less for the vapor of crude oil, gasoline
blends, or benzene, by addition of an inert gas, in accordance with the
inert gas requirements of 46 CFR 32.53 or 46 CFR 153.500.
    Inerting means introducing an inert gas into a tank and/or piping
system to lower the oxygen content of a vapor mixture.
    Line clearing means the transfer of residual cargo from a cargo
loading line toward a cargo tank by using compressed inert gas.
    Liquid knockout vessel means a device, other than a drip leg, used
to separate liquid from vapor.
    Maximum allowable gas-freeing rate means the maximum volumetric
rate at which a barge may be gas-freed during cleaning operations.
    Maximum allowable stripping rate means the maximum volumetric rate
at which a barge may be stripped during cleaning operations prior to
the opening of any hatch and/or fitting in the cargo tank being
stripped.
    Maximum allowable transfer rate means the maximum volumetric rate
at which a vessel may receive cargo or ballast.
    Minimum oxygen concentration for combustion or MOCC means the
lowest level of oxygen in a vapor or a vapor mixture that will support
combustion.
    Multi-breasted barge-loading operations are those in which barges
load side by side with the outboard barge's vapor collection system
connected to a facility vapor connection through the inboard barge, as
opposed to single-breasted operations involving a single barge, and may
also be known as ``two barge, double-up'' loading operations.
    Multiple facility vapor collection system junction means the point
in the vapor collection system where two or more branch lines
originating from separate facility vapor connections are connected.
    New vapor control system means a vapor control system that is not
an existing vapor control system.
    Padding means introducing into a tank and associated piping system
with an inert gas or liquid which separates the cargo from air, and
maintaining the condition.
    Partially inerted means the oxygen content of the vapor space in a
tank is reduced to below what is normally present in the atmosphere by
the addition of an inert gas such as nitrogen or carbon dioxide, but
not to the concentration that meets the definition of ``inert condition
or inerted'' in this section.
    Pig means any device designed to maintain a tight seal within a
cargo line while being propelled by compressed inert gas towards a
cargo tank, for the purpose of transferring residual cargo from the
cargo loading line to the cargo tank.
    Pigging means the transfer of residual cargo from a cargo loading
line by using compressed inert gas to propel a ``pig'' through the line
toward a cargo tank.
    Pre-transfer conference means the conference required by 33 CFR
156.120(w).
    Purging means introducing an inert gas into a tank and/or piping
system to further reduce the existing hydrocarbon and/or oxygen content
to a level below which combustion cannot be supported if air is
subsequently introduced into the tank or piping system.
    Stripping means the removal, to the maximum extent practicable, of
cargo residue remaining in the barge's cargo tanks and associated fixed
piping system after cargo transfer or during cleaning operations.
    Tank barge cleaning facility or TBCF means a facility used or
capable of being used to conduct cleaning operations on a tank barge.
    Transfer facility means a facility as defined in 33 CFR 154.105,
excluding tank barge cleaning or stripping facilities.
    Vacuum displacement system means a system that removes vapors from
a barge's cargo tanks during gas freeing by sweeping air through the
cargo tank hatch openings.
    Vapor balancing means the transfer of vapor displaced by incoming
cargo from the tank of a vessel or facility receiving cargo into a tank
of the vessel or facility delivering cargo via facility vapor
collection system.
    Vapor collection system means an arrangement of piping and hoses
used to collect vapor emitted to or from a vessel's cargo tanks and to
transport the vapor to a vapor processing unit or a tank.
    Vapor control system or VCS means an arrangement of piping and
equipment used to control vapor emissions collected to or from a vessel
and includes the vapor collection system and the vapor processing unit
or a tank.
    Vapor destruction unit means a vapor processing unit that destroys
cargo vapor by a thermal destruction method.
    Vapor dispersion unit means a vapor processing unit that releases
cargo vapor into the atmosphere through a venting system not located on
the tank vessel.
    Vapor processing unit means the components of a vapor control
system that recover, destroy, or disperse vapor collected from a
vessel.
    Vapor recovery unit means a vapor processing unit that recovers
cargo vapor by nondestructive means.

    Vessel vapor connection means the point in a vessel's fixed vapor
collection system where it connects to a vapor collection hose or arm.

Certifying Entities

Sec.  154.2010  Qualifications for acceptance as a certifying entity.

    To qualify for acceptance as a vapor control system (VCS)
certifying entity, the entity must demonstrate to the satisfaction of
the Commandant that it possesses the following minimum qualifications:
    (a) The ability to review and evaluate design drawings and failure
analyses for compliance to this subpart;
    (b) The knowledge of the applicable regulations of this subpart,
including the standards incorporated by reference;
    (c) The ability to monitor and evaluate test procedures and results
for compliance with the operational requirements of this subpart;
    (d) The ability to perform inspections and observe tests of bulk
liquid cargo-handling systems;
    (e) The applicant must not be controlled by an owner or operator of
a vessel or facility engaged in controlling vapor emissions;
    (f) The applicant must not be dependent upon Coast Guard acceptance
under this section to remain in business; and
    (g) The person in charge of VCS certification must be a licensed
professional engineer in a U.S. State or territory by August 15, 2014.

Sec.  154.2011  Application for acceptance as a certifying entity.

    (a) An applicant seeking Coast Guard acceptance as a certifying
entity of vapor control systems (VCSs) must submit a signed, written
application to the Commandant containing the information described in
paragraph (b) of this section. The applicant's signature certifies that
the information in the application is true and that the applicant is
not dependent upon Coast Guard acceptance under this section to remain
in business and constitutes consent for the Coast Guard to verify any
information contained in the application, through personal examination
of persons named in the application, or otherwise. If an applicant
knowingly and willfully provides any false statement or
misrepresentation, or conceals a material fact in the application, the
application may be denied or terminated, and the applicant may be
subject to prosecution under the provisions of 18 U.S.C. 1001.
    (b) An application must include the following general information:
    (1) The name and address of the applicant, including subsidiaries
and divisions if applicable;
    (2) A description of the experience and qualifications of any
person who would review or test systems on behalf of the applicant,
showing that the person is familiar with or otherwise qualified to
implement Coast Guard VCS regulations; and
    (3) A letter from a facility owner or operator stating his or her
intent to use the services of the applicant to certify VCS
installations.
    (c) The Commandant reviews each application and either issues a
letter of acceptance as a certifying entity to the applicant, or
notifies the applicant that it is not accepted, and maintains a list of
currently accepted certifying entities that is available to the public
at http://homeport.uscg.mil.
    (d) The acceptance of a certifying entity may be terminated by the
Commandant for failure to review, inspect, or test a system properly in
accordance with this subpart.
    (e) A certifying entity may not certify a facility VCS if that
certifying entity was involved in the design or installation of the
system. ``Design or installation'' includes, but is not limited to--
    (1) Performing system design calculations;
    (2) Providing chemical data;
    (3) Developing plans, specifications, and drawings;
    (4) Conducting failure analysis; and
    (5) Installing systems or components.
    (f) A certifying entity may not recertify a VCS design,
configuration, or operational change if it was involved in that change,
and may not conduct an operational review of a VCS if it has been
involved in the design, installation, or operation of the VCS.
    (g) A certifying entity may not conduct the failure analysis of a
facility VCS it is certifying. The certifying entity may only point out
shortcomings shown by the failure analysis and may not propose changes
to correct the shortcomings.
    (h) A certifying entity may not certify the VCS of any vessel or
facility owner or operator that owns or has a controlling interest in
the certifying entity.

Certification, Recertification, and Operational Review

Sec.  154.2020  Certification and recertification--owner/operator
responsibilities.

    (a) Prior to operating, a new vapor control system (VCS)
installation must be certified under 33 CFR 154.2023 by a certifying
entity as meeting the requirements of this subpart.
    (b) A certified VCS or a Coast Guard-approved VCS that was
operating prior to July 23, 1990 must be recertified by a certifying
entity under 33 CFR 154.2023 before it can--
    (1) Control vapors other than those for which it was originally
certified;
    (2) Receive vapors from vessels other than those for which it was
approved, if the VCS was in operation prior to July 23, 1990;
    (3) Operate under any changed design or configuration;
    (4) Operate as part of multi-breasted barge-loading operations, if
the VCS was not originally approved or certified for such operations;
or
    (5) Be connected to a tank vessel if a pigging system is used to
clear cargo in the cargo line back to the tank vessel.
    (c) For a transfer facility, prior to operating a VCS to control
vapor from a tank vessel during cargo loading line pigging to clear
cargo in the cargo loading line back to the tank vessel, the cargo
loading line pigging system must be reviewed by a certifying entity as
meeting the requirements of 33 CFR 154.2104.
    (d) To apply for certification, the owner or operator of a facility
VCS must submit plans, calculations, specifications, and other related
information, including a qualitative failure analysis, to the
certifying entity. Suggested, but not mandatory, guidance for preparing
a qualitative failure analysis can be found in the American Institute
of Chemical Engineers publication ``Guidelines for Hazard Evaluation
Procedures,'' and in Military Standard MIL-STD-882B for a quantitative
failure analysis. For assistance in locating those publications,
contact the Coast Guard, Office of Design and Engineering Standards
(CG-ENG), 2100 2nd Street SW., Stop 7126, Washington, DC 20593-7126,
telephone<PHONE_NUMBER> or via email at<EMAIL_ADDRESS>The
analysis must demonstrate that--
    (1) The VCS can operate continuously and safely while controlling
cargo vapors to or from tankships or tank barges over the full range of
transfer rates expected at the facility;
    (2) The VCS has the proper alarms and automatic shutdown systems
required by this subpart to prevent an unsafe operation;
    (3) The VCS has sufficient automatic or passive devices to minimize
damage to personnel, property, and the environment if an accident were
to occur;
    (4) If a quantitative failure analysis is also conducted, the level
of safety

attained is at least one order of magnitude greater than that
calculated for operating without a VCS; and
    (5) If a facility uses a cargo line pigging system to clear cargo
in the cargo line back to the tank vessel with the VCS connected, the
qualitative failure analysis must demonstrate that the cargo line
pigging system has at least the same levels of safety required by
paragraphs (d)(1), (2), and (3) of this section to prevent overpressure
of the vessel's cargo tanks and account for the probability that the
pig is destroyed during line-pigging operations.
    (e) The VCS owner or operator must maintain at the facility--
    (1) A copy of VCS design documentation, including plans, drawings,
calculations, and specifications for the VCS;
    (2) The facility operations manual, including the list of cargoes
that the facility is approved to vapor control;
    (3) Any certification or recertification letter issued under 33 CFR
154.2023; and
    (4) Other records as required by 33 CFR 154.740.

Sec.  154.2021  Operational review--owner/operator responsibilities.

    (a) Each facility vapor control system (VCS) must undergo an
operational review by a certifying entity within five years of its
initial certification or last operational review, to ensure its proper
operation and maintenance.
    (b) The VCS owner or operator must coordinate with the certifying
entity and provide the entity with all necessary documentation and
records to conduct the operational review.
    (c) The VCS owner or operator must notify the Captain of the Port
(COTP) of a scheduled operational review. The COTP, at his or her
discretion, may observe the operational review.
    (d) The VCS owner or operator must maintain, at the facility, the
latest operational review letter issued under 33 CFR 154.2023.

Sec.  154.2022  Certification, recertification, or operational review--
certifying entity responsibilities, generally.

    Before the initial certification of a facility vapor control system
(VCS), the certifying entity must perform each of the tasks specified
in this section.
    (a) Review all VCS design documentation, including plans, drawings,
calculations, specifications, and failure analysis, to ensure that the
VCS design meets the requirements of this subpart.
    (b) Conduct an initial onsite inspection to ensure that the VCS
installation conforms to the VCS plans, drawings, and specifications
reviewed.
    (c) Conduct onsite reviews and observe tests to ensure the VCS's
proper operation in accordance with its design and compliance with
applicable regulations and the facility's operations manual and to
ensure that--
    (1) Each alarm and shutdown shown on the piping and instrumentation
diagrams (P&IDs) and reviewed in the hazard analysis as part of the
system responds properly, through simulation of emergency conditions to
activate the alarm or shutdown;
    (2) Maximum vacuum cannot be exceeded at the maximum operating
conditions of any vapor-moving device, through testing of the vacuum
breaker;
    (3) VCS shutdown occurs correctly, through the startup of the VCS
and tripping of each shutdown loop while the VCS is not connected to a
vessel;
    (4) VCS startup, normal operation, and shutdown occur properly,
through observing the relevant portions of a test loading or unloading
of one vessel, or a test cleaning of one tank barge at a tank barge
cleaning facility; and that
    (5) The automatic liquid block valve successfully stops flow of
liquid to the vessel during a system shutdown, through observing the
relevant portions of a test loading or test cargo tank cleaning.
    (d) Review, for each cargo vapor the VCS will control, the cargo's
chemical data and the VCS design to ensure that--
    (1) Each vapor-controlled chemical is either specified in writing
by the Commandant or listed in 46 CFR 30.25-1, 46 CFR 151.05, or Table
1 or Table 2 of 46 CFR 153;
    (2) Each chemical's maximum experimental safe gap, minimum oxygen
concentration for combustion (MOCC), and upper and lower limits of
flammability have been correctly determined (this may but need not be
in compliance with Coast Guard guidance available at http://homeport.uscg.mil);
    (3) Vapor properties and characteristics are addressed, including
freezing point, polymerization potential, solubility, and cargo
compatibility;
    (4) The flash point for any cargo with a closed-cup flash point of
60[deg]C (140[deg]F) or higher is properly determined;
    (5) The cargo's vapor growth rate has been correctly determined and
the VCS complies with 33 CFR 154.2103(a) and (b) or 33 CFR 154.2203(a)
or (b);
    (6) Each detonation arrester used in the VCS is correct for each
chemical's maximum experimental safe gap;
    (7) Setpoints for each oxygen analyzer used in the VCS are correct
for each chemical's MOCC;
    (8) Setpoints for each oxygen or hydrocarbon analyzer used in the
VCS are correct for each chemical's upper or lower flammability limit;
    (9) The inerting, enriching, or dilution system used is adequate;
    (10) Each vapor-controlled chemical is compatible with all VCS
components and with other chemicals and with inerting, enriching, or
diluting gases added to the VCS per 46 CFR part 150, Table I and Table
II;
    (11) The VCS's mechanical equipment and system are suitable;
    (12) The VCS's vapor recovery or destruction unit has adequate
capacity and is safe for each chemical;
    (13) Any calculation to determine the duration of purging required
by 33 CFR 154.2150(p) is correct; and that
    (14) The VCS's failure analysis addresses any hazards presented
with each chemical.
    (e) Review the VCS prior to certifying it to control vapors from
barge cargo tanks during multi-breasted barge loading operations, to
confirm that--
    (1) The overfill control system required by 33 CFR 154.2102 will
process a liquid overfill condition within any one cargo tank on each
barge;
    (2) If multi-breasted loading is conducted using more than one
liquid transfer hose from the shore facility, the facility is capable
of activating the emergency shutdown system required by 33 CFR 154.550,
and can automatically stop the cargo flow to each transfer hose
simultaneously, in the event an upset condition occurs that closes the
remotely operated cargo vapor shutoff valve required by 33 CFR
154.2101(a);
    (3) The facility operations manual has been modified to include the
procedures for multi-breasted barge-loading operations; and
    (4) The facility operations manual describes how to make proper
connections, on the facility side, between the alarm and shutdown
systems of the VCS and of each barge being loaded.
    (f) Review a cargo line pigging system that will be used to clear
cargo in the cargo line back to a tank vessel for compliance with 33
CFR 154.2104.
    (g) Review the facility operations manual for compliance with 33
CFR 154.310(b).
    (h) Review any test program used for instrument testing and
calibration for compliance with 33 CFR 154.2180 and 33 CFR 154.2181.
    (i) Review the facility's VCS training program for compliance with
33 CFR 154.2030 and 154.2031.

Sec.  154.2023  Recertification--certifying entity responsibilities,
generally.

    (a) Before the recertification of a facility vapor control system
(VCS) the certifying entity must perform the reviews specified in 33
CFR 154.2022, except paragraphs (a) through (c).
    (b) The certifying entity must review, inspect, and observe tests
of a facility VCS's design or configuration alteration before
recertifying a VCS that was certified or approved for operation prior
to July 23, 1990, to ensure that the altered system complies with
applicable regulations. In general, the certifying entity should
perform the review, inspection, and observe tests as specified in 33
CFR 154.2022(a) through (c). However, depending on the extent of the
alteration, the review, inspection, or test observing may not need to
be as comprehensive as those for an initial certification.

Sec.  154.2024  Operational review--certifying entity responsibilities,
generally.

    In conducting an operational review the certifying entity must
ensure that the vapor control system (VCS) is properly operating and
maintained by performing the tasks specified in this section.
    (a) Ensure the completeness, currency, and accuracy of the facility
operations manual, training plans, and VCS test procedures.
    (b) Confirm through training records that the current listed
available facility persons in charge have been trained in compliance
with 33 CFR 154.2030 or 154.2031.
    (c) Confirm that recordkeeping and testing and inspection comply
with 33 CFR 154.740 and 156.170.
    (d) Verify that there has been no change to the VCS equipment or
instrumentation since the last certification, recertification, or
operational review to ensure that the certification letter is current.
    (e) Verify proper marking, labeling, maintenance, and operation of
VCS components, through visual inspection.
    (f) Confirm that the originally certified liquid cargo transfer
rate can still be attained in compliance with 33 CFR 154.2103 and
154.2107.
    (g) Ensure that cargo transfer or tank-cleaning barge operational
procedures are properly followed and the VCS operates properly, through
observation of the initial stages of transfer or cleaning, including
24-hour pre-transfer tests required by 33 CFR 154.2150(b) or 33 CFR
154.2250(b), the pre-transfer conference, and initial system startup
procedures.

Sec.  154.2025  Certification, recertification, or operational review--
certifying entity documentation.

    (a) If the certifying entity is satisfied that the facility's vapor
control system (VCS) has successfully undergone the reviews,
inspections, and tests required by 33 CFR 154.2022(a) for certification
or recertification, and that the VCS will operate properly and safely,
the certifying entity must certify or recertify the VCS by issuing a
certification letter to the facility owner or operator, and by sending
copies of the letter to the Captain of the Port (COTP) and the
Commandant. The certification letter must refer by date to the
certifying entity's letter of acceptance issued under 33 CFR
154.2011(c), and must--
    (1) State that the facility complies with applicable regulations
and with its operations manual, and list any exemptions to the
applicable regulations that have been approved by the Coast Guard;
    (2) Report on all reviews, inspections, and tests undergone by the
VCS in accordance with 33 CFR 154.2022(a);
    (3) List all plans and drawings that were reviewed by the
certifying entity;
    (4) State if the VCS may control vapors from tank barges that are
required to have a shore-side, explosion-proof receptacle or an
overfill control system required by 33 CFR 154.2102(a) and (b); and
    (5) List all cargoes that the certifying entity approves for
control by the VCS.
    (b) If the certifying entity is satisfied that the facility's VCS
has successfully undergone the operational review required by 33 CFR
154.2022(b), the certifying entity must issue an operational review
letter to the facility owner or operator, and send copies of the letter
to the COTP and the Commandant. The operational review letter must--
    (1) List each item reviewed and inspected;
    (2) Describe the transfer or cleaning operation observed; and
    (3) Summarize the review's results.

Personnel

Sec.  154.2030  Transfer facilities.

    (a) Personnel in charge of a transfer operation using a vapor
control system (VCS) must have completed a training program covering
the particular VCS installed at the facility. As part of the training
program, personnel must be able to demonstrate, through drills and
display of practical knowledge, the proper VCS operational procedures
for normal and emergency conditions. The training program must cover
the following subjects:
    (1) Purpose of the VCS;
    (2) Principles of the VCS;
    (3) Components of the VCS;
    (4) Hazards associated with the VCS;
    (5) Coast Guard regulations in this subpart;
    (6) Operating procedures, including:
    (i) Transfer, testing, and inspection requirements;
    (ii) Pre-transfer procedures;
    (iii) Chemicals approved for collection;
    (iv) Material safety data sheet review;
    (v) Connection procedures;
    (vi) Startup procedures;
    (vii) Normal operating conditions and how to handle deviations from
normal conditions;
    (viii) Normal shutdown procedures; and
    (ix) Operating procedures for cargo line clearing if a cargo line
clearance system is installed in accordance with 33 CFR 154.2104; and
    (7) Emergency procedures.
    (b) Personnel overseeing VCS maintenance must be familiar with--
    (1) Inspection of detonation arresters; and
    (2) Procedures for equipment and instrumentation testing required
by 33 CFR 156.170(g).
    (c) Facility personnel in charge of a transfer operation using a
VCS must be designated and qualified in compliance with 33 CFR 154.710
and the facility must maintain the training documentation required by
33 CFR 154.740(b).

Sec.  154.2031  Tank barge cleaning facilities.

    (a) In addition to complying with 33 CFR 154.2030, a tank barge
cleaning facility (TBCF) person-in-charge (PIC) of a barge cargo tank-
cleaning operation that uses a vapor control system (VCS) must complete
a training program covering the particular systems installed at the
facility and on the barge. As part of the training program, personnel
must be able to demonstrate, through drills and practical knowledge,
the proper VCS operation procedures for normal and emergency
conditions. The training program must--
    (1) Satisfy the requirements of 33 CFR 154.2030(a)(1) through (7),
except (a)(6)(i), (ii), and (ix), and 33 CFR 154.2030(b) and cover--
    (i) Purpose, principles, components, and hazards associated with
stripping and gas-freeing;
    (ii) Special hazards associated with the accumulation and discharge
of static electricity; and
    (iii) Operating procedures, including cleaning, testing, and
inspection requirements; pre-cleaning procedures; and safeguards to
prevent static electricity discharge.

    (b) In addition to the requirements contained in 33 CFR 154.710, no
person may serve, and the facility operator may not use the services of
anyone, as a facility PIC of a cleaning operation unless the person has
been properly trained and certified by the facility with a minimum of
60 hours of experience in cleaning operations.

Transfer Facilities--VCS Design and Installation

Sec.  154.2100  Vapor control system, general.

    (a) Vapor control system (VCS) design and installation must
eliminate potential overpressure and vacuum hazards, overfill hazards,
sources of ignition, and mechanical damage to the maximum practicable
extent. Each remaining hazard source that is not eliminated must be
specifically addressed in the protection system design and system
operational requirements.
    (b) Vapor collection system pipe and fitting components must be in
accordance with ANSI B31.3 (incorporated by reference, see 33 CFR
154.106) with a maximum allowable working pressure (MAWP) of at least
150 pounds per square inch gauge (psig). Valves must be in accordance
with ASME B16.34, 150 pound class (incorporated by reference, see 33
CFR 154.106). Flanges must be in accordance with ANSI B16.5 or ANSI
B16.24, 150 pound class (both incorporated by reference, see 33 CFR
154.106). The following components and their associated equipment do
not have a minimum specified MAWP, but must be constructed to
acceptable engineering standards and have the appropriate mechanical
strength to serve the intended purpose: knockout drums, liquid seals,
blowers/compressors, flare stacks/incinerators, and other vapor
processing units.
    (c) All VCS electrical equipment must comply with NFPA 70 (2011)
(incorporated by reference, see 33 CFR 154.106).
    (d) Any pressure, flow, or concentration indication required by
this part must provide a remote indicator on the facility where the
cargo transfer system and VCS are controlled, unless the local
indicator is clearly visible and readable from the operator's normal
position at the control stations.
    (e) Any condition requiring an alarm as specified in this part must
activate an audible and visible alarm where the cargo transfer and VCSs
are controlled.
    (f) For a VCS installed after August 15, 2013, an alarm or shutdown
must be activated if electrical continuity of an alarm or shutdown
sensor required by this subpart is lost.
    (g) The VCS piping surface temperature must not exceed 177[deg]C
(350[emsp14][deg]F) or 70 percent of the auto-ignition temperature in
degrees Celsius of the vapors being transferred, whichever is lower,
during normal operations. This must be achieved by either separating or
insulating the entire VCS from external heat sources.
    (h) The VCS must be equipped with a mechanism to eliminate any
liquid condensate from the vapor collection system that carries over
from the vessel or condenses as a result of an enrichment process.
    (1) If a liquid knockout vessel is installed to eliminate any
liquid condensate, it must have--
    (i) A mechanism to indicate the level of liquid in the device;
    (ii) A high liquid level sensor that activates an alarm, meeting
the requirements of paragraph (e) of this section;
    (iii) A high-high liquid level sensor that closes the remotely
operated cargo vapor shutoff valve required by 33 CFR 154.2101(a), and
shuts down any vapor-moving devices before carrying liquid over from
the vessel to the vapor-moving device. One sensor with two stages may
accomplish both this requirement and the requirement of paragraph
(h)(1)(ii) of this section; and
    (2) If a drip leg is used to eliminate any liquid condensate, it
must be fitted with a mechanism to remove liquid from the low point.
    (i) Vapor collection piping must be electrically grounded and must
be electrically continuous.
    (j) If the facility handles inerted vapors of cargoes containing
sulfur, the facility must control heating from pyrophoric iron sulfide
deposits in the vapor collection line.
    (k) All VCS equipment and components, including piping, hoses,
valves, flanges, fittings, and gaskets, must be suitable for use with
the vapor in the VCS.

Sec.  154.2101  Requirements for facility vapor connections.

    (a) A remotely operated cargo vapor shutoff valve must be installed
in the vapor collection line between the facility vapor connection and
the nearest point where any inerting, enriching, or diluting gas is
introduced into the vapor collection line, or where a detonation
arrester is fitted. The valve must--
    (1) Close within 30 seconds after detection of a shutdown condition
of any component required by this subpart;
    (2) Close automatically if the control signal or electrical power
to the system is interrupted;
    (3) Activate an alarm meeting 33 CFR 154.2100(e) when a signal to
shut down is received from a component;
    (4) Be capable of manual operation or manual activation;
    (5) Have a local valve position indicator, or be designed so that
the valve position can be readily determined from the valve handle or
valve stem position; and
    (6) If the valve seat is fitted with resilient material, be a
Category A valve as defined by 46 CFR 56.20-15 and not allow
appreciable leakage when the resilient material is damaged or
destroyed.
    (b) Except when a vapor collection arm is used, the first 1 meter
(3.3 feet) of vapor piping downstream of the facility vapor connection
must be--
    (1) Painted in the sequence of red/yellow/red. The width of the red
bands must be 0.1 meter (0.33 foot) and the width of the middle yellow
band must be 0.8 meter (2.64 feet); and
    (2) Labeled with the word ``VAPOR'' painted in black letters at
least 50.8 millimeters (2 inches) high.
    (c) Each facility vapor connection flange face must have a
permanent stud projecting outward that is 12.7 millimeters (0.5 inch)
in diameter and is at least 25.4 millimeters (1 inch) long. The stud
must be located at the top of the flange face, midway between
boltholes, and in line with the bolthole pattern.
    (d) Each hose that transfers vapors must--
    (1) Have a design burst pressure of at least 25 pounds per square
inch gauge (psig);
    (2) Have a maximum allowable working pressure no less than 5 psig;
    (3) Be capable of withstanding at least a 2 pounds per square inch
(psi) vacuum without collapsing or constricting;
    (4) Be electrically continuous with a maximum resistance of 10,000
ohms;
    (5) Have flanges with--
    (i) A bolthole arrangement complying with the requirements for 150
pound class flanges, ANSI B16.5 (incorporated by reference, see 33 CFR
154.106); and
    (ii) One or more 15.9 millimeter (0.625 inch) diameter holes in the
flange face, located midway between boltholes, and in line with the
bolthole pattern;
    (6) Be resistant to abrasion and kinking;
    (7) Be compatible with vapors being controlled; and
    (8) Have the last 1 meter (3.3 feet) of each end of the vapor hose
marked in accordance with paragraph (b) of this section.
    (e) Vapor hoses must be adequately supported to prevent kinking,
collapse,

or contact with any metal of the vessel or facility to prevent
unintentional electrical bypassing of the insulating flange or the
single length of non-conducting hose required by paragraph (g) of this
section.
    (f) Fixed vapor collection arms must--
    (1) Meet the requirements of paragraphs (d)(1) through (5) of this
section; and
    (2) Have the last 1 meter (3.3 feet) of the arm marked in
accordance with paragraph (b) of this section.
    (g) The facility vapor connection must be electrically insulated
from the vessel vapor connection in accordance with OCIMF ISGOTT
section 17.5 (incorporated by reference, see 33 CFR 154.106). In order
to prevent electrical arcing during connection and disconnection of the
transfer hose/arm, the transfer hose/arm must be fitted with an
insulating flange or a single length of non-conducting hose to ensure
electrical discontinuity between the vessel and facility. The
insulating flange/hose should be inserted at the jetty end and must not
be electrically bypassed. The installation, inspection, and testing of
the insulating flange/hose must be in accordance with 46 CFR 35.35-4.
For each vapor hose, only one insulting flange or non-conductive hose
must be provided. See 46 CFR 35.35-4.
    (h) A vapor collection system, fitted with a gas injection system
that operates at a positive gauge pressure at the facility vapor
connection, must be fitted with a means to prevent backflow of vapor to
the vessel's vapor collection system during loading.
    (i) Electrical bonding between vessel and shore must be in
accordance with 46 CFR 35.35-.5.

Sec.  154.2102  Facility requirements for vessel liquid overfill
protection.

    This section does not apply to facilities collecting vapors emitted
from vessel cargo tanks while inerting, padding, or purging the cargo
tanks with an inert gas and not loading cargo into the cargo tank.
    (a) Each facility that receives cargo vapor from a tank barge that
is fitted with overfill protection, in accordance with 46 CFR
39.2009(a)(1)(iii), must provide a 120-volt, 20-amp explosion-proof
receptacle for the overfill protection system that meets--
    (1) ANSI NEMA WD-6 (incorporated by reference, see 33 CFR 154.106);
    (2) NFPA 70 (2011), Articles 406.9 and 501.145 (incorporated by
reference, see 33 CFR 154.106); and
    (3) 46 CFR 111.105-9.
    (b) Each facility that receives cargo vapor from a tank barge that
is fitted with an intrinsically safe cargo tank level sensor system
complying with 46 CFR 39.2009(a)(2), as a means of overfill protection,
must have an overfill control system on the dock capable of powering
and receiving an alarm and shutdown signal from the cargo tank level
sensor system that--
    (1) Closes the remotely operated cargo vapor shutoff valve required
by 33 CFR 154.2101(a) and activates the emergency shutdown system
required by 33 CFR 154.550 when--
    (i) A tank overfill signal is received from the barge; or
    (ii) Electrical continuity of the cargo tank level sensor system is
interrupted;
    (2) Activates an audible and visible alarm that warns barge and
facility personnel when a tank overfill signal, or an optional high-
level signal corresponding to a liquid level lower than the tank
overfill sensor setting, is received from the barge;
    (3) Has a mechanism to test the alarms and automatic shutdown
systems electrically and mechanically before operating the vapor
control system (VCS);
    (4) Has suitable means, such as approved intrinsic safety barriers
able to accept passive devices, so that the overfill and optional alarm
circuits on the barge side of the overfill control system, including
cabling, normally closed switches, and pin and sleeve connectors, are
intrinsically safe;
    (5) Is labeled at the dock with the maximum allowable inductance
(in millihenrys) and capacitance (in microfarads) to be connected to
the facility overfill protection system as specified by the equipment
manufacturer; and
    (6) Has a female connecting plug for the tank barge level sensor
system with a five-wire, 16-ampere connector body meeting IEC 60309-1
and IEC 60309-2 (both incorporated by reference, see 33 CFR 154.106),
that is--
    (i) Configured with pins S2 (N) and R1 (L3) for the tank overfill
sensor circuit, pin G connected to the cabling shield, and pins N (L2)
and T3 (L1) reserved for an optional high-level alarm connection;
    (ii) Labeled ``Connector for Barge Overfill Control System''; and
    (iii) Connected to the overfill control system by a shielded
flexible cable.

154.2103  Facility requirements for vessel vapor overpressure and
vacuum protection.

    In this section, the requirements of having a flame arrester or a
flame screen at the opening of a pressure relief valve or a vacuum
relief valve apply only to facilities collecting vapors of flammable,
combustible, or non-high flash point liquid cargoes.
    (a) A facility's vapor control system (VCS) must have the capacity
for collecting cargo vapor at a rate of not less than the facility's
maximum liquid transfer rate for cargoes that are vapor controlled plus
the vapor growth for the cargoes and any inerting, diluting, or
enriching gas that may be added to the system. Vapor growth must be
considered as 25 percent of the cargo's saturated vapor pressure in
pounds per square inch absolute (psia) at 115[emsp14][deg]F, divided by
12.5 psia (the vapor pressure of gasoline at 115[emsp14][deg]F), times
the facility's maximum liquid transfer rate, unless there is
experimental data for actual vapor growth for turbulent transferring
under the most severe conditions for vapor growth. If the cargo is
transferred at temperatures above 115[emsp14][deg]F, the cargo's true
vapor pressure (in psia) at the transferring temperature must be used
when determining the vapor growth.
    (b) A facility VCS must be designed to prevent the pressure in a
vessel's cargo tanks from going below 80 percent of the highest setting
of any of the vessel's vacuum relief valves or exceeding 80 percent of
the lowest setting of any of the vessel's pressure relief valves for a
non-inerted tank vessel. A facility VCS also must be designed to
prevent the pressure in a vessel's cargo tanks from going below 0.2
pounds per square inch gauge (psig) or exceeding 80 percent of the
lowest setting of any of the vessel's pressure relief valves for an
inerted tank vessel. The system must sustain the pressure in the
vessel's cargo tanks within this range at any cargo transfer rate less
than or equal to the maximum transfer rate determined at the pre-
transfer conference.
    (c) The pressure measured at the facility vapor connection must be
corrected for pressure drops across the vessel's vapor collection
system, vapor collection hose or arm, and vapor line up to the location
of the pressure sensor.
    (d) The facility vapor connection must have a pressure-sensing
device that meets the installation requirements of paragraph (h) of
this section, which activates an alarm that meets 33 CFR 154.2100(e)
when the pressure at the facility vapor connection exceeds either--
    (1) The pressure corresponding to the upper pressure determined in
paragraph (b) of this section; or
    (2) A lower pressure agreed upon at the pre-transfer conference.
    (e) If a facility draws vapor from a vessel with a vapor-moving
device, the facility vapor connection must have a pressure-sensing
device, which activates an alarm meeting 33 CFR 154.2100(e)

when the pressure at the facility vapor connection falls below either--
    (1) The pressure corresponding to the lower pressure determined in
paragraph (b) of this section; or
    (2) A higher pressure agreed upon at the pre-transfer conference.
    (f) The facility vapor connection must have a pressure-sensing
device, independent of the device used to activate the alarm required
by paragraph (d) of this section, meeting the installation requirements
of paragraph (h) of this section, which activates the emergency
shutdown system required by 33 CFR 154.550 when the pressure at the
facility vapor connection exceeds the lower of the following:
    (1) A pressure corresponding to 90 percent of the vessel's lowest
pressure relief valve setting, corrected for pressure drops across the
vessel's vapor collection system, the vapor collection hose or arm, and
any vapor line up to the point where the pressure sensor is located;
    (2) A pressure corresponding to 90 percent of the setting of the
pressure relief valve at the facility vapor connection, if the facility
vapor connection is installed with a pressure relief valve; or
    (3) A lower pressure than the pressure in paragraphs (f)(1) and
(f)(2) of this section that is agreed upon at the pre-transfer
conference.
    (g) If a facility draws vapors from a vessel with a vapor-moving
device, the facility vapor connection must have a pressure-sensing
device, independent of the device used to activate the alarm required
by paragraph (e) of this section, which closes the remotely operated
cargo vapor shutoff valve required by 33 CFR 154.2101(a) when the
vacuum at the facility vapor connection is more than the higher (lesser
vacuum) of the following:
    (1) A vacuum corresponding to 90 percent of the vessel's highest
vacuum relief valve setting;
    (2) A vacuum corresponding to 90 percent of the setting of the
vacuum relief valve at the facility vapor connection, if the facility
vapor connection is installed with a vacuum relief valve; or
    (3) A lesser vacuum than the vacuum in paragraphs (g)(1) and (g)(2)
of this section that is agreed upon at the pre-transfer conference.
    (h) The pressure-sensing devices required by paragraphs (d) and (f)
of this section must be located in the vapor collection line between
the facility vapor connection and the following:
    (1) Any isolation valve, unless an interlock is provided that
prevents operation of the system when the isolation valve is closed;
and
    (2) Any components that could plug and cause a blockage in the
vapor line.
    (i) A pressure-indicating device must be provided that displays the
pressure in the vapor collection line between the facility vapor
connection and any isolation valve or any devices which could cause a
blockage in the vapor line.
    (j) If a facility draws vapor from the vessel with a vapor-moving
device capable of drawing more than 1 pound per square inch (psi)
vacuum, a vacuum relief valve must be installed in the vapor collection
line between the vapor-moving device and the facility vapor connection,
which--
    (1) Relieves at a predetermined pressure such that the pressure at
the facility vapor connection is maintained at -1.0 psig (1.0 psig
vacuum) or less vacuum;
    (2) Has a relieving capacity equal to or greater than the capacity
of the vapor-moving device;
    (3) Has a flame arrester or flame screen fitted at the vacuum
relief opening; and
    (4) Has been tested for relieving capacity in accordance with
paragraph <IP_ADDRESS> of API 2000 (incorporated by reference, see 33 CFR
154.106) with a flame arrester or flame screen fitted.
    (k) When a facility collects cargo vapor through an extensive
length of vapor piping, such as an undersea pipeline from a vessel
moored offshore, before reaching the first pressure sensor and vacuum
relief valve, the vacuum relief valve may be set at a vacuum greater
than 1 psi vacuum, provided the pressure controls take into account the
pressure drop across the vessel's vapor collection system, any vapor
collection hoses, and the vapor piping as a function of the actual
transfer rate.
    (l) If the pressure in the vapor collection system can exceed 1.5
psig during a malfunction of a pressure regulator or control valve in
an inerting, enriching, or diluting system, a pressure relief valve
must--
    (1) Be located between where the inerting, enriching, or diluting
gas is introduced into the vapor collection system and the facility
vapor connection;
    (2) Relieve at the higher of the following two pressures:
    (i) A pressure such that the pressure at the facility vapor
connection does not exceed 1.5 psig; or
    (ii) The lowest pressure relief valve setting of vessels that
control vapors at the facility;
    (3) Have a relieving capacity equal to or greater than the maximum
capacity of the facility inerting, enriching, or diluting gas source
flowing through the failed pressure regulator or control valve, taking
into account the pressure drops across any flame arrester or discharge
piping fitted at the relief valve's discharge;
    (4) Have a flame arrester or flame screen fitted at the discharge
opening, if the design does not secure a minimum vapor discharge
velocity of 30 meters (98.4 feet) per second; and
    (5) Have been tested for relieving capacity in accordance with
paragraph <IP_ADDRESS> of API 2000.
    (m) The relieving capacity test required by paragraph (l)(5) of
this section must be carried out with a flame screen fitted at the
discharge opening if--
    (1) The design of the pressure relief valve does not secure a
minimum vapor discharge velocity of 30 meters (98.4 feet) per second;
and
    (2) The discharge is not fitted with a flame arrester.
    (n) A facility that collects vapors emitted from vessel cargo tanks
while inerting, padding, or purging cargo tanks must--
    (1) Provide a pressure-sensing device that activates an alarm
meeting 33 CFR 154.2100(e) when the pressure of the inerting, padding,
or purging gas exceeds either the pressure corresponding to the higher
pressure determined in paragraph (b) of this section or a lower
pressure agreed upon at the pre-transfer conference;
    (2) Provide a pressure-sensing device, independent of the device
required by paragraph (n)(1) of this section, which automatically stops
the flow of inerting, padding, or purging gas to the vessel when the
pressure of the inerting, padding, or purging gas exceeds 90 percent of
the lowest setting of any pressure relief valve on the vessel; and
    (3) Locate the pressure-sensing devices required by paragraphs
(n)(1) and (n)(2) of this section in the inerting, padding, or purging
gas piping downstream of any devices in the gas piping that could
potentially isolate the vessel from the sensing devices.

Sec.  154.2104  Pigging system.

    (a) If a pigging system is used to clear cargo in the cargo lines
to the tank vessel while the vessel is connected to the facility vapor
control system (VCS), the pigging system must be designed with the
following safety features:
    (1) A bypass loop installed in the main liquid cargo line that
contains the pig-receiving device, through which all the liquid flow is
channeled during pigging operations. The pig must act as a seal to
separate the vessel from the compressed inert gas that is used to

propel it as the pig travels from the pig launcher to the pig-receiving
device;
    (2) A mechanism for restricting liquid and gas flow so that the
vessel, personnel, and environment are not endangered. The compressed
inert gas flow capacity that this mechanism secures must not be more
than 95 percent of the combined capacity of all vessel and facility VCS
relief valves located upstream of the facility's remotely operated
cargo vapor shutoff valve required by 33 CFR 154.2101(a);
    (3) A fast-action automatic shutoff valve such as a solenoid valve,
which closes on a high-pressure signal from the pressure sensor
required by 33 CFR 154.2103(f), located in the liquid bypass loop
downstream of the pig-receiving device;
    (4) An interlock with the main cargo line manual block valve so
that line-clearing operations cannot begin unless the main cargo line
manual block valve is closed; and
    (5) An automatic means to detect arrival of the pig at the pig-
receiving device.
    (b) If a cargo line clearance system without using pigging is used
to clear cargo in the cargo lines to the tank vessel while the vessel
is connected to the facility VCS, the cargo line clearance system must
be approved by the Commandant.

Sec.  154.2105  Fire, explosion, and detonation protection.

    This section applies only to facilities that control vapors of
flammable, combustible, or non-high flash point liquid cargoes.
    (a) A vapor control system (VCS) with a single facility vapor
connection that receives inerted cargo vapor from a vessel and
processes it with a vapor recovery unit must--
    (1) Be capable of inerting the vapor collection line in accordance
with 33 CFR 154.2107(a) before receiving the vessel's vapor and have at
least one oxygen analyzer, which satisfies the requirements of 33 CFR
154.2107(f)(1) and (2), (g), and (h)(2) and (3), sampling the vapor
concentration continuously at a point as close as practicable to the
facility vapor connection. The total pipe length between the analyzer
and the facility vapor connection must not exceed 6 meters (19.7 feet);
or
    (2) Have a detonation arrester located as close as practicable to
the facility vapor connection. The total pipe length between the
detonation arrester and the facility vapor connection must not exceed
18 meters (59.1 feet) and the vapor piping between the detonation
arrester and the facility vapor connection must be protected from any
potential internal or external ignition source.
    (b) A VCS with a single facility vapor connection that receives
only inerted cargo vapor from a vessel and processes it with a vapor
destruction unit must--
    (1) Satisfy the requirements of paragraph (a)(1) of this section
and have a detonation arrester located as close as practicable to the
facility vapor connection. The oxygen analyzer required by paragraph
(a)(1) can be located 4 meters (13.1 feet) downstream of the detonation
arrester. The total pipe length between the detonation arrester and the
facility vapor connection must not exceed 18 meters (59.1 feet) and the
vapor piping between the detonation arrester and the facility vapor
connection must be protected from any potential internal or external
ignition source; or
    (2) Have an inerting system that meets the requirements of 33 CFR
154.2107.
    (c) A VCS with a single facility vapor connection that receives
vapor from a vessel with cargo tanks that are not inerted or are
partially inerted, and processes it with a vapor recovery unit must--
    (1) Have a detonation arrester located as close as practicable to
the facility vapor connection. The total pipe length between the
detonation arrester and the facility vapor connection must not exceed
18 meters (59.1 feet) and the vapor piping between the detonation
arrester and the facility vapor connection must be protected from any
potential internal or external ignition source; or
    (2) Have an inerting, enriching, or diluting system that meets the
requirements of 33 CFR 154.2107.
    (d) A VCS with a single facility vapor connection that receives
vapor from a vessel with cargo tanks that are not inerted or are
partially inerted, and processes the vapor with a vapor destruction
unit must--
    (1) Have a detonation arrester located as close as practicable to
the facility vapor connection. The total pipe length between the
detonation arrester and the facility vapor connection must not exceed
18 meters (59.1 feet) and the vapor piping between the detonation
arrester and the facility vapor connection must be protected from any
potential internal or external ignition source; and
    (2) Have an inerting, enriching, or diluting system that satisfies
the requirements of 33 CFR 154.2107.
    (e) A VCS with multiple facility vapor connections that receives
vapor from vessels with cargo tanks that carry inerted, partially
inerted, non-inerted, or combinations of inerted, partially inerted,
and non-inerted cargoes, and processes them with a vapor recovery unit,
must have a detonation arrester located as close as practicable to each
facility vapor connection. The total pipe length between the detonation
arrester and each facility vapor connection must not exceed 18 meters
(59.1 feet) and the vapor piping between the detonation arrester and
the facility vapor connection must be protected from any potential
internal or external ignition source.
    (f) A VCS with multiple facility vapor connections that receives
only inerted cargo vapor from vessels and processes it with a vapor
destruction unit must--
    (1) Satisfy the requirements of paragraph (a)(1) of this section
for each facility vapor connection and have a detonation arrester
located as close as practicable to each facility vapor connection. The
oxygen analyzer required by paragraph (a)(1) can be located 4 meters
(13.1 feet) downstream of the detonation arrester. The total pipe
length between the detonation arrester and each facility vapor
connection must not exceed 18 meters (59.1 feet) and the vapor piping
between the detonation arrester and the facility vapor connection must
be protected from any potential internal or external ignition source;
or
    (2) Have an inerting, enriching, or diluting system that meets the
requirements of 33 CFR 154.2107.
    (g) A VCS with multiple facility vapor connections that receives
vapor from vessels with non-inerted or partially inerted cargoes, and
processes the vapor with a vapor destruction unit must--
    (1) Have a detonation arrester located as close as practicable to
each facility vapor connection. The total pipe length between the
detonation arrester and each facility vapor connection must not exceed
18 meters (59.1 feet) and the vapor piping between the detonation
arrester and the facility vapor connection must be protected from any
potential internal or external ignition source; and
    (2) Have an inerting, enriching, or diluting system that meets the
requirements of 33 CFR 154.2107.
    (h) A VCS with multiple facility vapor connections that
simultaneously receives vapor from vessels with inerted, partially
inerted, and non-inerted cargoes, and processes the vapor with a vapor
destruction unit must--
    (1) Have a detonation arrester located as close as practicable to
each facility vapor connection. The total pipe length between the
detonation arrester and each facility vapor connection must not exceed
18 meters (59.1 feet) and the vapor piping between the detonation

arrester and the facility vapor connection must be protected from any
potential internal or external ignition source; and
    (2) Have either an inerting, enriching, or diluting system that
meets the requirements of 33 CFR 154.2107, or a base loading system
that meets the requirements of 33 CFR 154.2107(m).
    (i) A VCS that uses a vapor balancing system in which cargo vapor
from a vessel or facility storage tank is transferred through the
facility vapor collection system to facility storage tanks or a vessel
must meet the requirements of 33 CFR 154.2110.
    (j) Each outlet of a VCS that vents to the atmosphere, except for a
discharge vent from a vapor destruction unit or relief valve installed
to comply with 33 CFR 154.2103(j) and (k) or 33 CFR 154.2203(e), (k),
and (l), must have one of the following located at the outlet:
    (1) A detonation arrester;
    (2) An end-of-line flame arrester that meets ASTM F 1273
(incorporated by reference, see 33 CFR 154.106); or
    (3) An end-of-line flame arrester that meets UL 525 (incorporated
by reference, see 33 CFR 154.106) if--
    (i) The discharge vent stream's total flammable concentration is
proven to be less than 50 percent of the lower flammable limit, or the
stream's oxygen concentration is proven to be less than 70 percent by
volume of the MOCC, at all times by an outlet concentration analyzer
for carbon beds, proof of correct operating temperature for
refrigeration systems, or proof of scrubbing medium flow for scrubbers;
and
    (ii) The proving devices in paragraph (j)(2)(i) of this section
close the remotely operated cargo vapor shutoff valve required in 33
CFR 154.2101(a) and close the automatic liquid cargo loading valve if
operating outside the conditions necessary to maintain the discharge
vent non-combustible.

Sec.  154.2106  Detonation arresters installation.

    This section applies only to facilities collecting vapors of
flammable, combustible, or non-high flash point liquid cargoes.
    (a) Detonation arresters must be installed in accordance with the
guidelines outlined in the arrester manufacturer's acceptance letter
provided by the Coast Guard.
    (b) On either side of a detonation arrester, line size expansions
must be in a straight pipe run and must be no closer than 120 times the
pipe's diameter from the detonation arrester unless the manufacturer
has test data to show the expansion can be closer.

Sec.  154.2107  Inerting, enriching, and diluting systems.

    This section applies only to facilities that control vapors of
flammable, combustible, or non-high flash point liquid cargoes.
    (a) Before receiving cargo vapor, a vapor control system (VCS) that
uses a gas for inerting, enriching, or diluting must be capable of
inerting, enriching, or diluting the vapor collection system, at a
minimum of two system volume exchanges of inerting, enriching, or
diluting gas, downstream of the injection point.
    (b) A VCS that uses an inerting, enriching, or diluting system must
be equipped, except as permitted by 33 CFR 154.2105(a), with a gas
injection and mixing arrangement located as close as practicable to the
facility vapor connection and no closer than 10 meters (32.8 feet)
upstream from the vapor processing unit or the vapor-moving device that
is not protected by a detonation arrester required by 33 CFR
154.2108(b). The total pipe length between the arrangement and the
facility vapor connection must not exceed 22 meters (72.2 feet). The
arrangement must be such that it provides complete mixing of the gases
within 20 pipe diameters of the injection point. The vapor piping
between the arrangement and the facility vapor connection must be
protected from any potential internal or external ignition source.
    (c) A VCS that uses an inerting or enriching system may not be
operated at a vacuum after the injection point unless--
    (1) There are no vacuum relief valves or other devices that could
allow air into the vapor collection system downstream of the injection
point, and pipe connections are flanged, threaded, or welded so no air
can leak into the VCS; or
    (2) An additional analyzer is used to monitor the vapor
concentration downstream of such device and a mechanism is provided to
inject additional inerting or enriching gas.
    (d) A VCS that uses analyzers to control the amount of inerting,
enriching, or diluting gas injected into the vapor collection line must
be equipped with at least two analyzers. The analyzers must be
connected so that--
    (1) When two oxygen analyzers are used, the higher oxygen
concentration reading controls the inerting or enriching system and
activates the alarm and automatic shutdown system required by paragraph
(h), (j), or (k)(2) of this section;
    (2) When voting systems using more than two oxygen analyzers are
used, the majority pair controls the inerting or enriching system and
activates the alarm and automatic shutdown system required by paragraph
(h), (j), or (k)(2) of this section;
    (3) When two hydrocarbon analyzers are used, the lower hydrocarbon
concentration reading controls the enriching system and activates the
alarm and automatic shutdown system required by paragraph (i) of this
section;
    (4) When voting systems using more than two hydrocarbon analyzers
are used, the majority pair controls the enriching system and activates
the alarm and automatic shutdown system required by paragraph (i) of
this section;
    (5) When two hydrocarbon analyzers are used, the higher hydrocarbon
concentration reading controls the diluting system and activates the
alarm and automatic shutdown system required by paragraph (l) of this
section; and
    (6) When voting systems using more than two hydrocarbon analyzers
are used, the majority pair controls the diluting system and activates
the alarm and automatic shutdown system required by paragraph (l) of
this section.
    (e) A VCS that uses volumetric measurements to control the amount
of inerting, enriching, or diluting gas injected into the vapor
collection line must be equipped, except as permitted by paragraph (m)
of this section, with at least one analyzer to activate the alarms and
automatic shutdown systems required by this section.
    (f) Each oxygen or hydrocarbon analyzer required by this section
must--
    (1) Be installed in accordance with API 550 (incorporated by
reference, see 33 CFR 154.106);
    (2) Have a system response time of not more than one minute from
sample input to 95 percent of final stable value as tested per 33 CFR
154.2180 and 33 CFR 154.2181; and
    (3) Continuously sample the vapor concentration not more than 30
pipe diameters from the gas injection point.
    (g) A VCS must not use oxygen analyzers that operate at elevated
temperatures (i.e., zirconia oxide or thermomagnetic).
    (h) An inerting system must--
    (1) Supply sufficient inert gas to the vapor stream to ensure that
the oxygen concentration downstream of the injection point is
maintained at or below 60 percent by volume of the minimum oxygen
concentration for combustion (MOCC) for the specific combination of
cargo vapors and inert gas being processed, which may be determined by
using Coast Guard

guidance available at http://homeport.uscg.mil;
    (2) Activate an alarm that satisfies the requirements of 33 CFR
154.2100(e) when the oxygen concentration in the vapor collection line
exceeds 60 percent by volume of the MOCC for the specific combination
of cargo vapors and inert gas being processed, which may be determined
by using Coast Guard guidance available at http://homeport.uscg.mil;
    (3) Close the remotely operated cargo vapor shutoff valve required
by 33 CFR 154.2101(a) when the oxygen concentration in the vapor
collection line exceeds 70 percent by volume of the MOCC for the
specific combination of cargo vapors and inert gas being processed,
which may be determined by using Coast Guard VCS guidance available at
http://homeport.uscg.mil;
    (4) Have a detonation arrester and a mechanism to prevent the
backflow of flammable vapors installed between the combustion device
and the inert gas injection point, if a combustion device is used to
produce the inert gas; and
    (5) Have an alarm value in paragraph (h)(2) of this section that is
at least one percentage point less than the shutdown value in paragraph
(h)(3) of this section. If the analyzers used to measure oxygen
concentrations cannot accurately differentiate between the alarm value
and the shutoff value, the alarm value must be lowered until the
analyzers become operable.
    (i) An enriching system must--
    (1) Supply sufficient compatible hydrocarbon vapor to the vapor
stream to make sure that the total flammable concentration downstream
of the injection point is maintained either at or above 170 percent by
volume of the upper flammable limit or above the upper flammable limit
plus 10 percentage points, whichever is lower;
    (2) Activate an alarm that satisfies the requirements of 33 CFR
154.2100(e) when the total flammable concentration in the vapor
collection line either falls below 170 percent by volume of the upper
flammable limit or below the upper flammable limit plus 10 percentage
points, whichever is lower;
    (3) Close the remotely operated cargo vapor shutoff valve required
by 33 CFR 154.2101(a) when the total flammable concentration in the
vapor collection line either falls below 150 percent by volume of the
upper flammable limit or below the upper flammable limit plus 7.5
percentage points, whichever is lower; and
    (4) Have an upper flammable limit listed in paragraphs (i)(1),
(i)(2), and (i)(3) of this section which is either the cargo's upper
flammable limit or the enriching gas's upper flammable limit, whichever
is higher. Alternatively, the mixture's upper flammable limit, which
may be determined by using methods found in Coast Guard guidance
available at http://homeport.uscg.mil, may be used.
    (j) Oxygen analyzers may be used instead of hydrocarbon analyzers
in a VCS using an enriching system that receives cargo vapor only from
a vessel with non-inerted cargo tanks, providing that the analyzers--
    (1) Activate an alarm satisfying the requirements of 33 CFR
154.2100(e) when the oxygen concentration in the vapor collection line
exceeds a level corresponding to either a total flammable concentration
of 170 percent by volume of the upper flammable limit or the upper
flammable limit plus 10 percentage points, whichever yields a higher
oxygen concentration;
    (2) Close the remotely operated cargo vapor shutoff valve required
by 33 CFR 154.2101(a) when the oxygen concentration in the vapor
collection line exceeds a level corresponding to either a total
flammable concentration of 150 percent by volume of the upper flammable
limit or the upper flammable limit plus 7.5 percentage points,
whichever yields a higher oxygen concentration;
    (3) Have an alarm value in paragraph (j)(1) of this section that is
at least one percentage point less than the shutdown value in paragraph
(j)(2) of this section. If the oxygen analyzers used to measure oxygen
concentrations cannot accurately differentiate between the alarm value
and the shutdown value, the alarm value must be lowered until the
analyzers become operable; and
    (4) Have an upper flammable limit listed in paragraphs (j)(1) and
(j)(2) of this section which is either the cargo's upper flammable
limit or the enriching gas's upper flammable limit, whichever is
higher. Alternatively, the mixture's upper flammable limit, which may
be determined by using methods found in Coast Guard VCS guidance
available at http://homeport.uscg.mil, may be used.
    (k) An enriching system may be used in a VCS that receives inerted
cargo vapor from a vessel if--
    (1) Hydrocarbon analyzers are used to comply with paragraphs (i)(2)
and (i)(3) of this section; or
    (2) Oxygen analyzers are used, in which case the analyzers must--
    (i) Activate an alarm meeting 33 CFR 154.2100(e) when the oxygen
concentration in the vapor collection line exceeds 60 percent by volume
of the MOCC for the specific combination of cargo vapors and gases; and
    (ii) Close the remotely operated cargo vapor shutoff valve required
by 33 CFR 154.2101(a) when the oxygen concentration exceeds 70 percent
by volume of the MOCC for the specific combination of cargo vapors and
gases; and
    (3) The MOCC in paragraphs (k)(2)(i) and (k)(2)(ii) of this section
is either the cargo's MOCC or the enriching gas's MOCC, whichever is
lower. Alternatively, the mixture's MOCC, which may be determined using
Coast Guard VCS guidance available at http://homeport.uscg.mil, may be
used.
    (l) An air dilution system must--
    (1) Supply a sufficient amount of additional air to the vapor
stream to keep the total flammable concentration downstream of the
injection point below 30 percent by volume of the lower flammable
limit;
    (2) Activate an alarm that satisfies the requirements of 33 CFR
154.2100(e) when the total flammable concentration in the vapor
collection line exceeds 30 percent by volume of the lower flammable
limit; and
    (3) Close the remotely operated cargo vapor shutoff valve required
by 33 CFR 154.2101(a) when the total flammable concentration in the
vapor collection line exceeds 50 percent by volume of the lower
flammable limit.
    (m) An enriching system may use a base loading method to control
the amount of enriching gas in a vapor collection system if--
    (1) The flow rate of enriching gas is determined by assuming the
vapor entering the facility vapor connection consists of 100 percent
air;
    (2) Two independent devices are used to verify the correct
enriching gas volumetric flow rate. One of the two devices must be a
flow meter;
    (3) One of the devices activates an alarm that satisfies the
requirements of 33 CFR 154.2100(e) when the amount of enriching gas
added results in a total flammable concentration in the vapor
collection line either below 170 percent by volume of the upper
flammable limit or below the upper flammable limit plus 10 percentage
points, whichever is lower;
    (4) The second device activates closure of the remotely operated
cargo vapor shutoff valve required by 33 CFR 154.2101(a) when the
amount of enriching gas added results in a total flammable
concentration in the vapor collection line either below 150 percent by
volume of the upper flammable limit or below the upper flammable limit
plus 7.5 percentage points, whichever is lower; and
    (5) The upper flammable limit in paragraphs (m)(3) and (4) of this
section

is either the cargo's upper flammable limit or the enriching gas's
upper flammable limit, whichever is higher. Alternatively, the
mixture's upper flammable limit, which may be determined using Coast
Guard guidance available at http://homeport.uscg.mil, may be used.
    (n) For controlling vapors of different cargoes at multiple berths
while using enriching gas, the highest upper flammable limit or the
lowest MOCC of the cargo or enriching gas, whichever is applicable, is
used to determine the analyzer alarm and shutdown setpoints.
Alternatively, the mixture's upper flammable limit or MOCC, which may
be determined by using Coast Guard guidance available at http://homeport.uscg.mil, may be used.
    (o) For controlling vapors of inert and non-inert cargoes at
multiple berths while using enriching gas--
    (1) The lowest MOCC of the cargo or enriching gas is used to
determine the analyzer alarm and shutdown setpoints at all berths.
Alternatively, the mixture's MOCC, which may be determined using Coast
Guard guidance available at http://homeport.uscg.mil, may be used; or
    (2) A base loading method meeting the requirements of paragraph (m)
of this section is used for all berths.

Sec.  154.2108  Vapor-moving devices.

    (a) Paragraphs (b) and (e) of this section apply only to facilities
collecting vapors of flammable, combustible, or non-high flash point
liquid cargoes.
    (b) Each inlet and outlet to a vapor-moving device that handles
vapor that has not been inerted, enriched, or diluted in accordance
with 33 CFR 154.2107 must be fitted with a detonation arrester;
however, the outlet detonation arrester may be omitted if the vapor-
moving device is within 50 times the pipe's diameter of the detonation
arrester required by 33 CFR 154.2109(a).
    (c) If the vapor is handled by a reciprocating or screw-type
compressor in the vapor collection system, the compressor must be
installed with indicators and audible and visible alarms to warn
against the following conditions:
    (1) Excessive gas temperature at the compressor outlet;
    (2) Excessive cooling water temperature;
    (3) Excessive vibration;
    (4) Low lube oil level;
    (5) Low lube oil pressure; and
    (6) Excessive shaft bearing temperature.
    (d) If the vapor is handled by a liquid ring-type compressor in the
vapor collection system, it must be installed with indicators and
audible and visible alarms to warn against the following conditions:
    (1) Low level of liquid sealing medium;
    (2) Lack of flow of the liquid sealing medium;
    (3) Excessive temperature of the liquid sealing medium;
    (4) Low lube oil level;
    (5) Low lube oil pressure, if pressurized lubricating system; and
    (6) Excessive shaft bearing temperature.
    (e) If the vapor is handled by a centrifugal compressor, fan, or
lobe blower in the vapor collection system, construction of the blades
or housing must be one of the following:
    (1) Blades or housing of nonmetallic construction;
    (2) Blades and housing of nonferrous material;
    (3) Blades and housing of corrosion resistant steel;
    (4) Ferrous blades and housing with one-half inch or more design
tip clearance;