[Federal Register Volume 77, Number 158 (Wednesday, August 15, 2012)]
[Proposed Rules]
[Pages 49167-49276]
[FR Doc No: 2012-18431]

Vol. 77

Wednesday,

No. 158

August 15, 2012

Part IV

Department of Transportation

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 Pipeline and Hazardous Materials Safety Administration

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49 CFR Parts 171,172,173, et al.

 Hazardous Materials: Harmonization with International Standards (RRR);
Proposed Rule

Federal Register / Vol. 77, No. 158 / Wednesday, August 15, 2012 /
Proposed Rules

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DEPARTMENT OF TRANSPORTATION

Pipeline and Hazardous Materials Safety Administration

49 CFR Parts 171, 172, 173, 175, 176 and 178

[Docket Nos. PHMSA-2012-0027 (HM-215L)]
RIN 2137-AE87

Hazardous Materials: Harmonization with International Standards
(RRR)

AGENCY: Pipeline and Hazardous Materials Safety Administration (PHMSA),
DOT.

ACTION: Notice of proposed rulemaking (NPRM).

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SUMMARY: PHMSA proposes to amend the Hazardous Materials Regulations to
maintain alignment with international standards by incorporating
various amendments, including changes to proper shipping names, hazard
classes, packing groups, special provisions, packaging authorizations,
air transport quantity limitations, and vessel stowage requirements.
These revisions are necessary to harmonize the Hazardous Materials
Regulations with recent changes made to the International Maritime
Dangerous Goods Code, the International Civil Aviation Organization's
Technical Instructions for the Safe Transport of Dangerous Goods by
Air, and the United Nations Recommendations on the Transport of
Dangerous Goods--Model Regulations and subsequently address a petition
for rulemaking.

DATES: Comments must be received by October 15, 2012.

ADDRESSES: You may submit comments by any of the following methods:
    Federal Rulemaking Portal: http://www.regulations.gov. Follow the
on-line instructions for submitting comments.
    Fax: 1-202-493-2251.
    Mail: Docket Management System; U.S. Department of Transportation,
Dockets Operations, M-30, Ground Floor, Room W12-140, 1200 New Jersey
Avenue SE., Washington, DC 20590-0001.
    Hand Delivery: To U.S. Department of Transportation, Dockets
Operations, M-30, Ground Floor, Room W12-140, 1200 New Jersey Avenue
SE., Washington, DC 20590-0001 between 9 a.m. and 5 p.m. Monday through
Friday, except Federal holidays.
    Instructions: Include the agency name and docket number PHMSA-2012-
0027 (HM-215L) or RIN 2137-AE87 for this rulemaking at the beginning of
your comment. Note that all comments received will be posted without
change to http://www.regulations.gov including any personal information
provided. If sent by mail, comments must be submitted in duplicate.
Persons wishing to receive confirmation of receipt of their comments
must include a self-addressed stamped postcard.
    Privacy Act: Anyone is able to search the electronic form of any
written communications and comments received into any of our dockets by
the name of the individual submitting the document (or signing the
document, if submitted on behalf of an association, business, labor
union, etc.). You may review DOT's complete Privacy Act Statement in
the Federal Register published on April 11, 2000 (65 FR 19477), or you
may visit http://www.regulations.gov .
    Docket: You may view the public docket through the Internet at
http://www.regulations.gov or in person at the Docket Operations office
at the above address (see ADDRESSES).

FOR FURTHER INFORMATION CONTACT: Michael Stevens, Office of Hazardous
Materials Standards or Vincent Babich, International Standards,
telephone<PHONE_NUMBER>, Pipeline and Hazardous Materials Safety
Administration, U.S. Department of Transportation, 1200 New Jersey
Avenue SE., 2nd Floor, Washington, DC, 20590-0001.

SUPPLEMENTARY INFORMATION:
I. Executive Summary
II. Background
III. Harmonization Proposals in This NPRM
IV. Amendments Not Being Considered for Adoption in This NPRM
V. Section-by-Section Review
VI. Regulatory Analyses and Notices
    A. Statutory/Legal Authority for the Rulemaking
    B. Executive Orders 12866 and 13563 and DOT Regulatory Policies
and Procedures
    C. Executive Order 13132
    D. Executive Order 13175
    E. Regulatory Flexibility Act, Executive Order 13272, and DOT
Policies and Procedures
    F. Paperwork Reduction Act
    G. Regulatory Identifier Number (RIN)
    H. Unfunded Mandates Reform Act
    I. Environment Assessment
    J. Privacy Act
    K. Executive Order 13609 and International Trade Analysis

I. Executive Summary

    PHMSA has initiated a rulemaking project to maintain alignment with
international regulations and standards by incorporating various
amendments, including changes to proper shipping names, hazard classes,
packing groups, special provisions, packaging authorizations, air
transport quantity limitations, and vessel stowage requirements. This
rulemaking project is part of our ongoing biennial process to harmonize
the Hazardous Materials Regulations (HMR; 49 CFR parts 171 to 180) with
international regulations and standards.
    Federal law and policy strongly favor the harmonization of domestic
and international standards for hazardous materials transportation. The
Federal hazardous materials transportation law (Federal hazmat law; 49
U.S.C. 5101 et seq.) permits PHMSA to depart from international
standards to promote safety or other overriding public interest, but
otherwise requires PHMSA to align the HMR with international transport
standards and requirements to the extent practicable (see 49 U.S.C.
5120).
    Harmonization facilitates international trade by minimizing the
costs and other burdens of complying with multiple or inconsistent
safety requirements for transportation of hazardous materials to and
from the United States and becomes increasingly important as the volume
of hazardous materials transported in international commerce grows. By
facilitating compliance, harmonization also tends to enhance safety for
international movements, but only if the international standards
themselves provide an appropriate level of safety. To that end, PHMSA
actively participates in the development of international standards for
the transportation of hazardous materials, frequently advocating the
adoption in international standards of particular HMR requirements.
    When considering the adoption of international standards under the
HMR, we review and consider each amendment on its own merit, on the
basis of its overall impact on transportation safety, and the economic
implications associated with its adoption into the HMR. Our goal is to
harmonize without diminishing the level of safety currently provided by
the HMR and without imposing undue burdens on the regulated community.
    This NPRM proposes to amend the HMR to maintain alignment with
various international standards. The following are some of the more
noteworthy proposals in this NPRM:
     Incorporate Revised Standards: PHMSA proposes to
incorporate by reference the newest versions of various international
hazardous materials standards including the 2013-2014 International
Civil Aviation Organization Technical Instructions for the Safe
Transport of Dangerous Goods by Air (ICAO Technical Instructions),
Amendment 36-12 to the International Maritime Dangerous Goods Code
(IMDG Code), and the 17th Revised Edition of

the United Nations Recommendations on the Transport of Dangerous Goods
(UN Model Regulations). Additionally, we are proposing to update our
incorporation by reference of the Canadian Transportation of Dangerous
Goods Regulations to include Amendment 8 (SOR/2011-239) issued November
9, 2011, Amendment 9 (SOR/2011-60) issued March 16, 2011, and Amendment
10 (SOR/2011-210) issued October 12, 2011. Finally, in this NPRM PHMSA
is proposing the adoption of updated International Standards
Organization (ISO) standards.
    If the amendments in this proposed rule are not adopted in the HMR
by January 1, 2013, the date most of the international standards above
take effect, U.S. companies, including numerous small entities
competing in foreign markets, would be at an economic disadvantage.
These companies would be forced to comply with a dual system of
regulations. The amendments proposed in this rulemaking are intended to
avoid this result.
     Expand Packaging Authorizations: Consistent with
amendments adopted by the UN Model Regulations, PHMSA proposes to adopt
changes throughout the Part 173 packaging requirements to authorize
more flexibility when choosing packages for hazardous materials. These
changes include, but are not limited to, the authorization to allow
wood as a material of package construction for certain explosives the
authorization to use metals other than steel or aluminum for drums and
boxes; and the authorization, where appropriate, to permit the use of
non-removable head drums in those instances where removable head drums
are otherwise authorized.
    These amendments will allow additional flexibility to the regulated
community with respect to the material of construction authorized for
such packages and types of packages authorized, without compromising
safety.
     Revise Vessel Stowage Codes: PHMSA proposes to revise,
consolidate, and delete various vessel stowage codes. Specifically,
PHMSA is proposing to revise the vessel stowage location requirements
for explosives by reducing the number of explosive stowage categories
from 15 to 5 in column 10A of the Hazardous Materials Table (HMT) found
in Sec.  172.101. In addition to the changes in column 10A, in this
NPRM PHMSA is proposing modifications to the vessel stowage codes
listed in column 10B of the HMT. These changes are designed to
harmonize with the IMDG Code, reduce the number of redundant vessel
stowage codes and add various vessel segregation definitions in Sec.
176.2.
    These revisions to the vessel stowage requirements in column 10 of
the HMT are proposed to eliminate redundant codes, align with
modifications to the IMDG Code and to simplify the vessel stowage
requirements by limiting the number of stowage options without
compromising safety. PHMSA believes these changes will greatly simplify
vessel stowage requirements and facilitate international transportation
of hazardous materials in commerce by aligning the HMR with the IMDG
Code, while continuing to achieve an appropriate level of safety.
     Adopt Flexible Bulk Container Requirements: PHMSA proposes
to incorporate a new packaging definition, operational controls,
performance-oriented standards, and testing requirements for Flexible
Bulk Containers (FBCs). FBCs are bulk packages with a capacity over the
currently authorized maximum volumetric capacity for IBCs. The maximum
proposed volumetric capacity of FBCs is 15 cubic meters. PHMSA proposes
to harmonize with the internationally recognized definition of FBCs,
adopt performance-oriented packaging design and testing standards for
FBCs, and impose operational controls on the use of FBCs in transport.
These FBC requirements will be modeled after the FBC requirements
adopted into the 17th Revised Edition of the UN Model Regulations.
    FBCs provide shippers the opportunity to utilize a reusable
packaging for bulk shipments of certain authorized low-hazard
commodities. The associated design-type testing requirements ensure a
high level of packaging integrity, and experience with such packagings
in international transportation has verified the safety of these
packagings.
     Adopt Chemical Under Pressure Provisions: We are proposing
to revise the HMT to include entries for chemical under pressure as
well as incorporate other safety requirements including but not limited
to packaging requirements, segregation requirements, quantity
limitations, and filling limits into the HMR.
    There is often confusion with regard to the proper classification
of chemical under pressure. Currently, these types of products are
often incorrectly classified and transported as liquefied gases or
shipped under special permits. The addition of packaging requirements
specific to chemical under pressure will ensure that an appropriate
level of safety is achieved for these unique materials.
     Specify Minimum Size Requirements for Identification
Number Markings on Non-Bulk Packages: PHMSA proposes to add specific
size requirements for identification number (i.e., ``UN,'' ``NA,''
``ID'') markings as prescribed in Sec.  172.301 for non-bulk packages.
PHMSA proposes this minimum size marking for the ``UN,'' ``NA,'' and
``ID'' markings to align with newly adopted requirements in the 17th
Revised Edition of the UN Model Regulations.
    PHMSA recognizes the importance of establishing a minimum size
requirement for the internationally recognized ``UN'' identification
number marking system. Without a minimum size requirement for hazard
communication, shippers may mark packages in a format that makes it
difficult for first responders to identify the commodity associated
with a particular package.
     Revise HMT Entries: In this NPRM, PHMSA proposes
amendments to the Sec.  172.101 Hazardous Materials Table (HMT) to add,
revise, or remove certain proper shipping names, hazard classes,
packing groups, special provisions, packaging authorizations, bulk
packaging requirements, passenger and cargo aircraft maximum quantity
limits. The proposed changes to the HMT mirror recent changes in the
Dangerous Goods list of The 17th Revised Edition of the UN Model
Regulations, the IMDG Code, and the ICAO Technical Instructions.
    If adopted in a final rule, the amendments proposed in this NPRM
will result in minimal burdens on the regulated community. The benefits
resulting from the adoption of the amendments include enhanced
transportation safety resulting from the consistency of domestic and
international hazard communication and continued access to foreign
markets by U.S. manufacturers of hazardous materials. The majority of
amendments in this NPRM should result in cost savings and ease the
regulatory compliance burden for shippers engaged in domestic and
international commerce, including trans-border shipments within North
America.
    PHMSA solicits comments on the need for these amendments and others
proposed in this NPRM. Specifically, PHMSA requests comments on the
benefits and costs of international harmonization, including the impact
on safety and any other relevant concerns regarding the amendments
proposed in this NPRM. In addition, PHMSA solicits comment from the
regulated community

regarding approaches to reducing the costs of this rule while
maintaining or increasing the benefits. In its preliminary analysis,
PHMSA concluded that the aggregate benefits justify the aggregate costs
as a result of the amendments proposed in this NPRM. Nonetheless, PHMSA
solicits public comment on specific changes (for example, greater
flexibility with regard to a particular amendment) that might improve
the rule.

II. Background

    In a final rule published December 21, 1990 (Docket HM-181; 55 FR
52402), the Research and Special Programs Administration (RSPA), the
predecessor agency to PHMSA, comprehensively revised the HMR to
harmonize U.S. hazardous materials transportation requirements with the
UN Model Regulations. The UN Model Regulations constitute a set of
recommendations issued by the UNSCOE and the Globally Harmonized System
of Classification and Labelling of Chemicals (GHS). The UN Model
Regulations are amended and updated biennially by the UNSCOE and serve
as the basis for national, regional, and international modal
regulations, including the IMDG Code and the ICAO Technical
Instructions.
    Since publication of the 1990 rule, PHMSA has issued nine
additional international harmonization rulemakings under Dockets: HM-
215A [59 FR 67390]; HM-215B [62 FR 24690]; HM-215C [64 FR 10742]; HM-
215D [66 FR 33316]; HM-215E [68 FR 44992]; HM-215G [69 FR 76044]; HM-
215I [71 FR 78595]; HM-215J [74 FR 2200]; and HM-215K [76 FR 3308].
These rulemakings were based on biennial updates of the UN Model
Regulations, the IMDG Code, and the ICAO Technical Instructions.
    Federal law and policy strongly favor the harmonization of domestic
and international standards for hazardous materials transportation. The
Federal hazardous materials transportation law (Federal hazmat law; 49
U.S.C. 5101 et seq.) directs PHMSA to participate in relevant
international standard-setting bodies and encourages alignment of the
HMR with international transport standards to the extent practicable
while recognizing that deviations may at times be necessary to be
consistent with the public interest (see 49 U.S.C. 5120). Harmonization
facilitates international trade by minimizing the costs and other
burdens of complying with multiple or inconsistent safety requirements
for transportation of hazardous materials. Harmonization has also
become increasingly important as the volume of hazardous materials
transported in international commerce grows. By facilitating
compliance, harmonization enhances safety. PHMSA actively participates
in relevant international standard-setting bodies and promotes the
adoption of standards consistent with the high safety standards set by
the HMR.
    When considering alignment of the HMR with international standards,
we review and evaluate each amendment on its own merit, on the basis of
its overall impact on transportation safety, and the on the basis of
the economic implications associated with its adoption into the HMR.
Our goal is to harmonize without diminishing the level of safety
currently provided by the HMR or imposing undue burdens on the
regulated community.
    Based on this review and evaluation, in this NPRM PHMSA is
proposing to revise the HMR to incorporate changes from the 17th
Revised Edition of the UN Model Regulations, Amendment 36-12 to the
IMDG Code, and the 2013-2014 ICAO Technical Instructions, which become
effective January 1, 2013 (The IMDG Code is effective January 1, 2013;
however, the previous amendment may continue to be used until January
1, 2014).
    In addition, PHMSA proposes to incorporate by reference (see 171.8)
the newest editions of various international standards. These standards
incorporated by reference are authorized for use, under specific
circumstances, in Subpart C of Part 171 of the HMR. This proposed rule
is necessary to incorporate revisions to the international standards
and, if adopted in the HMR, will be effective January 1, 2013.

Possible Interim Final Rule

    If the changes in this proposed rule are not adopted by January 1,
2013, U.S. companies, including numerous small entities competing in
foreign markets, would be at an economic disadvantage because these
companies would be forced to comply with a dual system of regulations
(specifically, the U.S. HMR, UN Model Regulations, and ICAO Technical
Instructions). As previously noted, the changes to the international
standards will take effect on January 1, 2013. Therefore, it is
essential that a final rule incorporating these standards by reference
be published no later than December 31, 2012 with an effective date of
January 1, 2013. To this end, if it appears a final rule under this
docket will not be published prior to January 1, 2013, PHMSA will
publish a bridging document in the form of an interim final rule to
amend the HMR by incorporating the 17th Revised Edition of the UN
Recommendations and the 2013-2014 ICAO Technical Instructions.
    With regard to Amendment 36-12 of the IMDG Code, the International
Maritime Organization approved an implementation date of January 1,
2014. The current edition of the IMDG Code (Amendment 35-10) remains in
effect through 2013 and, therefore, the newest version of the IMDG Code
will not be included in any bridging document. The proposed
incorporation by reference of the newest edition of the IMDG Code and
all other changes proposed in this NPRM would be addressed in a
subsequent final rule also under this Docket, PHMSA-2012-0027 (HM-
215L). Accordingly, any interim final rule will only incorporate by
reference editions of the international standards that become effective
on January 1, 2013.

III. Harmonization Proposals in this NPRM

    In addition to various revisions of the HMT and special provisions,
in this NPRM, PHMSA is proposing the following amendments to harmonize
the HMR with the most recent revisions to the UN Model Regulations,
ICAO Technical Instructions, and the IMDG Code:

Chemical under pressure

    Manufacturers in the United Kingdom, the United States, Australia,
Canada, and other countries are supplying pressurized products
contained and transported in gas cylinders. These products are liquids
or solids such as adhesives, coatings, and cleaners combined with a gas
or gas mixture in pressure receptacles under sufficient pressure to
expel the contents. These mixtures are typically expelled from the
pressurized cylinders as foams, streams, or thick sprays.
    Currently the HMR does not address liquids or solids transported
under pressure. A typical product that would meet this description is a
combination of a propellant (gas phase) and a liquid or solid
component. Accordingly, the term liquefied gas does not correctly
identify the contents of the container, nor can the material accurately
be described by the name of the gas or liquid/solid component alone.
    The new entries (UN numbers) and corresponding provisions for
``chemical under pressure'' address their unique characteristics and
ensure the safe transport of such materials. These entries and
corresponding requirements were adopted into the 17th Revised Edition
of the UN Model Regulations. Subsequently, ICAO and IMO adopted

the entries for chemicals under pressure as well as modal-specific
requirements.
    In this NPRM, PHMSA is proposing to revise the HMT to include
individual entries for chemical under pressure and incorporate other
safety requirements including, but not limited to, quantity and filling
limits and packaging and segregation requirements.

Hazardous Materials Table (HMT)

    In this NPRM, PHMSA proposes amendments to the HMT to add, revise,
or remove certain proper shipping names, hazard classes, packing
groups, special provisions, packaging authorizations, bulk packaging
requirements, and passenger and cargo aircraft maximum quantity limits.
In addition, PHMSA is proposing to comprehensively revise vessel
stowage requirements to align with recent changes adopted into the IMDG
Code.

Incorporation by Reference

    In this NPRM, PHMSA proposes to incorporate by reference the latest
editions of various international transport standards including the
2013-2014 ICAO Technical Instructions, Amendment 36-12 of the IMDG
Code, and the 17th Revised Edition of the UN Model Regulations.
Additionally, we are proposing to update our incorporation by reference
of the Canadian Transportation of Dangerous Goods Regulations to
include Amendment 8 (SOR/2011-239) dated November 9, 2011; Amendment 9
(SOR/2011-60) dated March 16, 2011; and Amendment 10 (SOR/2011-210)
dated October 12, 2011. This incorporation by reference augments the
broad reciprocity provided in Sec.  171.12 where the HMR allow the use
of the Canadian TDG Regulations under certain conditions when
transporting hazardous materials to or from Canada by highway or rail.
Finally, PHMSA is proposing the incorporation by reference of new and
updated International Standards Organization (ISO) standards.

Flexible Bulk Containers (FBCs)

    In this NPRM, PHMSA proposes to incorporate a new packaging
definition, operational controls, performance-oriented standards, and
testing requirements for Flexible Bulk Containers (FBCs). FBCs are
flexible bulk packages with a capacity over the currently authorized
maximum volumetric capacity for flexible IBCs, but not exceeding 15
cubic meters. FBCs provide shippers the opportunity to utilize a
reusable flexible packaging for bulk shipments of certain low-hazard
commodities, all of which are currently authorized in non-specification
bulk bins.
    The 17th Revised Edition of the UN Model Regulations adopted a
performance-oriented standard for flexible bulk container design and
testing. PHMSA proposes to harmonize with the internationally
recognized definition of FBCs, adopt the same performance-oriented
packaging design and testing standards for FBCs, and impose similar
operational controls on the use of FBCs in transport. The applicable
proposed definitions, operational controls, performance-oriented
standards, and testing requirements will be discussed in further detail
in the section by section review portion of this NPRM.

Explosive Definitions

    In this NPRM, PHMSA proposes modifying the definitions for
``Articles, explosive, extremely insensitive (Articles, EEI)'' and
``Cartridges, blank.'' We also propose to replace the definition for
``Explosive, extremely insensitive detonating substances (EIDS)'' with
a new definition for ``Explosive, extremely insensitive substances
(EIS).'' Finally, we propose to add a definition for ``Auxiliary
explosive component, isolated.'' The addition and modification of these
definitions will provide consistency with international regulations and
clarity when utilizing the UN test series 7 for explosive
classification.

Packaging Authorizations

    Part 173 of the HMR describes the general requirements for
shipments and packagings of hazardous materials. Consistent with
amendments adopted by the UN Model Regulations, PHMSA proposes to amend
various Part 173 packaging requirements to authorize more flexibility
when selecting packagings for hazardous materials. These proposed
amendments include, but are not limited to, the authorization to use
wood as a material of package construction for certain explosives, the
authorization to use metals other than steel or aluminum for boxes and
drums for certain hazardous materials, and the incorporation of
authorizations and specifications for FBCs.

Vessel Stowage Requirements

    The requirements for vessel stowage are described and specified in
Sec.  172.101(k) and HMT entries are assigned appropriate vessel
stowage codes and stowage special provisions in column (10) of the HMT.
Column (10) is divided into two columns: column (10A) [Vessel stowage]
specifies the authorized stowage locations on board cargo and passenger
vessels and column (10B) [Other provisions] specifies special stowage
and segregation provisions.
    In this NPRM, we are proposing to clarify these instructions by
revising the vessel stowage location requirements for explosives and
reducing the number of explosive stowage categories from 15 to 5 in
column (10A) of the HMT. Specifically, explosive stowage categories 6
through 15 will be eliminated, and stowage categories 1 through 5 will
be retained and modified. This consolidation of codes is proposed to
eliminate redundant codes, align with modifications to the IMDG Code,
and simplify the vessel stowage requirements by limiting the number of
stowage options without compromising safety.
    In addition to the HMT changes related to explosives stowage, in
this NPRM PHMSA is proposing modifications to the vessel stowage
provisions listed in column (10B) of the HMT. For harmonization with
the IMDG Code, PHMSA proposes to incorporate the addition of a new
definition for protected from sources of heat and potential or possible
sources of ignition (see Section 176.2 of this NPRM for definitions),
and subsequently revise and delete various vessel stowage provisions.
These changes were developed to eliminate redundant codes, align with
revisions to the IMDG Code, and simplify the vessel stowage
requirements. By limiting the number of stowage options, we believe it
will substantially reduce the complexity of the regulations without
compromising safety.
    The revisions and consolidations of vessel storage codes in column
(10A) and the stowage provisions in (10B) of the HMT are discussed in
further detail below. PHMSA believes these changes will greatly
simplify vessel stowage requirements and facilitate the seamless
international transport of hazardous materials by aligning with the
IMDG Code.

Mercury

    Consistent with the various international standards, PHMSA is
proposing to add an internationally recognized proper shipping name and
identification number for UN3506, Mercury contained in manufactured
articles, and the addition of a Division 6.1 (toxic) subsidiary hazard
risk to UN2809, Mercury. Data presented to the UN Committee of Experts
on the Transport of Dangerous Goods (UNSCOE) in the last biennium
indicated the need for assigning a subsidiary risk of Division 6.1 to

UN2809, Mercury, and the need to adopt a separate description for
UN3506, Mercury contained in manufactured articles.

IV. Amendments Not Being Considered for Adoption in This NPRM

    This NPRM proposes changes to the HMR based on amendments adopted
in the 17th Revised Edition of the UN Model Regulations, the 2013-2014
edition of the ICAO Technical Instructions, and Amendment 36-12 to the
IMDG Code. We are not, however, proposing to adopt all the amendments
made to the various international standards into the HMR.
    In many cases, amendments to the international recommendations and
regulations have not been adopted because the framework or structure of
the HMR makes adoption unnecessary. In other cases, we have addressed,
or will address, the amendments in separate rulemaking proceedings. If
we have inadvertently omitted an amendment in this NPRM, we will
attempt to include the omission in the final rule. However, our ability
to make changes in a final rule is limited by requirements of the
Administrative Procedure Act (5 U.S.C. 553). In some instances, we can
adopt a provision inadvertently omitted in the NPRM if it is clearly
within the scope of changes proposed in the notice. Otherwise, in order
to provide opportunity for notice and comment, the change must first be
proposed in an NPRM.
    One of the goals of this rulemaking is to continue to maintain
consistency between the HMR and the international requirements. We are
not striving to make the HMR identical to the international regulations
but rather to remove or avoid potential barriers to international
transportation.
    The following is a list of significant amendments to the
international regulations that we are not proposing to adopt in this
NPRM, with a brief explanation of why the amendment was not included:

Security Provisions for High Consequence Dangerous Goods

    The 17th Revised Edition of the UN Model Regulations adopted
modifications to the security provisions specified in Chapter 1.4 with
regard to ``high consequence dangerous goods.'' Specifically, these
changes address the handling of certain Class 7 radioactive materials.
In the 17th Revised Edition the UN adopted a list of transport security
thresholds for specific radionuclides in Table 1.4.2 of Chapter 1.4.
Materials identified in this table exceeding the transport security
thresholds indicated in terabecquerels (TBq) would be subject to
additional security requirements such as security training and security
plans.
    In this NPRM, PHMSA is not proposing the adoption of the changes to
the security requirements found in the HMR with regard to high
consequence dangerous goods. These amendments to the international
recommendations and regulations are not being adopted because the
existing safety and security requirements found in Subpart I of Part
172 are consistent with and provide for a level of safety and security
equivalent to the revised UN Model Regulations.

Requirements for Lithium Batteries

    On January 11, 2010, PHMSA published an NPRM in the Federal
Register under Docket HM-224F (75 FR 1302). The NPRM included
provisions to ensure lithium batteries are properly packaged to reduce
the possibility of damage that could lead to a catastrophic incident,
and minimize the consequences of an incident should one occur. In
addition, PHMSA proposed to require lithium battery shipments to be
accompanied by hazard communication that ensures appropriate and
careful handling by air carrier personnel, including the flight crew,
and informs both transport workers and emergency response personnel of
actions to be taken in an emergency.
    Subsequently, on April 11, 2012, PHMSA published a notice in the
Federal Register requesting additional comment on the impacts of
changes to the requirements for the air transport of lithium cells and
batteries that were adopted into the 2013-2014 ICAO Technical
Instructions. PHMSA is considering whether to harmonize the HMR with
these requirements, and published a notice to allow interested persons
an opportunity to supplement comments to the HM-224F NPRM.
    The HM-224F NPRM and the April 11, 2012 notice, which PHMSA
developed in close coordination with the Federal Aviation
Administration (FAA), are the latest in a series of actions PHMSA has
taken to address the potential risks posed by lithium batteries in
transportation. These publications solicit comments on revisions to the
HMR and are based on lithium battery provisions in the 16th Revised
Edition of the UN Model Regulations and the 2013-2014 ICAO Technical
Instructions. Because lithium batteries are addressed in separate
battery-specific rulemakings and notices, PHMSA is not proposing
amendments pertaining to the transportation of lithium cells and
batteries in this NPRM. The docket for the lithium battery rulemaking
can be found at http://www.regulations.gov under PHMSA-2009-0095.

Notification to the Pilot-In-Command

    Section 175.33 of the HMR addresses the requirements for
notification of pilot-in-command regarding hazardous materials stowed
aboard the aircraft. Recent amendments adopted in the upcoming 2013-
2014 edition of the ICAO Technical Instructions modify the information
required to be given to the pilot-in-command as prescribed in Part 7;
4.1. These modifications include a requirement that the operator of an
aircraft transporting hazardous materials provide personnel with
responsibilities for operational control of the aircraft with the same
information that is required to be provided to the pilot-in-command. In
addition, the modifications also include a table of hazardous materials
not required to appear on the notification provided to the pilot-in-
command. Because better analysis is necessary to assess the regulatory
impact of alignment with the ICAO Technical Instructions on this
matter, PHMSA is not proposing to adopt the new provisions in this
NPRM. However, PHMSA does intend to address these changes in a future
rulemaking.

Requirements for Salvage Pressure Receptacles

    The 17th Revised Edition of the UN Model Regulations adopted
guidelines for Competent Authorities to use when issuing approvals for
salvage pressure receptacles. These revisions are found in Chapter 1.2,
4.1, 5.4, and 6.2 of the UN Model Regulations. Specifically, these
requirements address the packaging, hazard communication, and safe
transport of salvage pressure receptacles, also known as salvage
cylinders in the United States.
    The HMR currently address the packaging, hazard communication, and
safe transport of salvage cylinders in Sec.  173.3(d) and do not
require approval of the Associate Administrator to do so. PHMSA
believes the current salvage cylinder requirements in the HMR provide a
sufficient level of safety and adequately address the shipment of
damaged and defective cylinders. Therefore, PHMSA is not proposing
changes to the current HMR provisions for salvage cylinders in this
NPRM.

Fireworks Classification Reference

    The 17th Revised Edition of the UN Model Regulations adopted
requirements for fireworks classification references. Specifically, a
provision was

adopted requiring fireworks under identification numbers UN0333,
UN0334, UN0335, UN0336, and UN0337, having been approved by a competent
authority, to bear a classification reference on the shipping paper.
The classification reference would indicate the country of the
competent authority approval and would also include a unique serial
reference for the specific firework device.
    PHMSA intends to address fireworks-related issues in a separate
rulemaking and, therefore, will not address fireworks-related issues in
this NPRM. The docket for the fireworks rulemaking can be found at
http://www.regulations.gov under PHMSA-2010-0320 (HM-257).

Criteria for Exclusion From Class 1

    The ICAO and IMO recently adopted guidance issued to competent
authorities regarding when an article or substance can be excluded from
meeting the classification of a Class 1 (explosive) material. PHMSA is
not adopting the issued guidance in this NPRM because it is
classification parameters to be considered by a competent authority and
not actual regulatory provisions.

Air Bag Inflator, Air Bag Module, or Seat-Belt Pretensioner Revisions

    The 17th Revised Edition of the UN Model Regulations revised the
authorized packagings used for the transportation of air bag inflators,
air bag modules, or seat-belt pretensioners. Specifically, in addition
to currently authorized packagings, the UN Model Regulations adopted
authorizations for 1N2 and 1D drums, 3B2 jerricans, and 4A, 4B, 4N, and
4H1 boxes.
    PHMSA is not addressing the additional packaging authorizations in
this rulemaking as these and other related issues were addressed in a
separate NPRM. The docket for the air bag inflator, air bag module, and
seat-belt pretensioner rulemaking can be found at http://www.regulations.gov under PHMSA-2010-0201.

Pressure Relief Valves for Closed Cryogenic Receptacles

    A new provision was added to Packing Instruction P203 of the 17th
Revised Edition of the UN Model Regulations. The amendment prescribes
that the frequency of periodic inspection and test of the pressure
relief valves for closed cryogenic receptacles shall not exceed five
years.
    In this NPRM, PHMSA is not proposing to adopt this amendment.
Section 173.316, ``Cryogenic Liquids in Cylinders,'' and Sec.  173.301,
``General Requirements for Shipment of Compressed Gases and Other
Hazardous Materials in Cylinders, UN Pressure Receptacles and Spherical
Pressure Vessels'' do not specify the frequency of tests of pressure
relief device systems. The HMR requires testing of these systems in
accordance with the Compressed Gas Association's S-1.1, ``Pressure
Relief Device Standards--Part 1--Cylinders for Compressed Gases'' and
S-7, ``Method for Selecting Pressure Relief Devices for Compressed Gas
Mixtures in Cylinders.'' PHMSA believes these requirements already
provide for an adequate level of safety of pressure relief device
systems.

Absorbent Materials for Air Packaging

    Numerous packing instructions of the ICAO Technical Instructions
were revised to consistently provide that for certain liquid hazardous
materials, inner packagings must be packed with sufficient absorbent
material to absorb the entire contents of the inner packagings.
    PHMSA does not intend to adopt these amendments in this NPRM.
Rather, we adopted them in a separate rulemaking under docket PHMSA-
2007-29364 (HM-231A). For example, in the final rule published in the
Federal Register on April 16, 2012 (77 FR 22504), we revised Sec.
173.27(e) to require that inner packagings be packaged in a rigid
leakproof liner or rigid intermediate packaging containing sufficient
absorbent material to absorb the entire contents of the inner packaging
before being placed in its outer package when absorbent material was
required. Generally, this requirement is applicable to Packing Group I
liquids.

UN Test Series 6(d) for Certain Division 1.4S Articles

    Special provision 364 was added to the 17th Revised Edition of the
UN Model Regulations that requires limited quantity packages of certain
Division 1.4S explosives under the following descriptions ``UN 0012
Cartridges for weapons, inert projectile or Cartridges, small arms,''
``UN0014 Cartridges for weapons, blank or Cartridges, small arms, blank
or Cartridges for tools, blank,'' and ``UN0055 Cases, cartridge, empty
with primer'' be capable of passing Test Series 6(d) in accordance with
the UN Manual of Tests and Criteria as determined by the competent
authority.
    PHMSA believes that the current requirements for shipments of these
articles adequately address the hazards associated with the transport
of these limited quantity hazardous materials and, thus, will not be
adopting the requirement for these materials as packaged to be capable
of passing Test Series 6(d) of Part I of the UN Manual of Tests and
Criteria.

Coolants, Conditioners, and Asphyxiates

    In many instances cargo transport units are treated with substances
to cool and condition the transport environment inside the transport
unit. Occasionally gases presenting a risk of asphyxiation are used as
part of this cooling and conditioning process. In this case an
accumulation of these gases may present a risk to those handling these
cargo transport units in transport.
    The 17th Revised Edition of the UN Model Regulations adopted
various requirements applicable to packages and cargo transport units
containing substances presenting a risk of asphyxiation when used for
cooling or conditioning purposes. Requirements adopted internationally
include a new marking requirement for both packages and freight
containers containing dangerous goods used for cooling and conditioning
as well as the requirement to note that a dangerous good is being used
as a coolant or conditioner on transport documents. PHMSA believes that
the current requirements for shipments of dry ice and other potential
coolants adequately address the hazards associated with the use of
these hazardous materials as coolants or conditioners and notes that
the current provisions of the HMR would not preclude the use of the new
marking for domestic or international transport.

V. Section-By-Section Review

    The following is a section-by-section review of the amendments
proposed in this NPRM:

Part 171

Section 171.7

    The ``National Technology Transfer and Advancement Act of 1996''
directs agencies to use voluntary consensus standards. According to the
Office of Management and Budget (OMB), Circular A-119, ``Federal
Participation in the Development and Use of Voluntary Consensus
Standards and in Conformity Assessment Activities,'' government
agencies must use voluntary consensus standards wherever practical in
the development of regulations. Agency adoption of industry standards
promotes productivity and efficiency in government and industry,
expands opportunities for international trade, conserves resources,
improves health

and safety, and protects the environment.
    To these ends, PHMSA actively participates in the development and
updating of consensus standards through representation on more than 20
consensus standard bodies. PHMSA regularly reviews updated consensus
standards and considers their merit for inclusion in the HMR.
    Section 171.7 provides a listing of all standards incorporated by
reference into the HMR. For this rulemaking, we evaluated updated
international consensus standards pertaining to proper shipping names,
hazard classes, packing groups, special provisions, packaging
authorizations, air transport quantity limitations, and vessel stowage
requirements and determined that the revised standards provide an
enhanced level of safety without imposing significant compliance
burdens. These standards have a well-established and documented safety
history; their adoption will maintain the high safety standard
currently achieved under the HMR. Therefore, we propose to update by
adding and revising the incorporation by reference materials under the
following organizations:
    The International Civil Aviation Organization (ICAO) Technical
Instructions for the Safe Transport of Dangerous Goods by Air, 2011-
2012 Edition is revised to incorporate the 2013-2014 Edition.
    The International Convention for the Safety of Life at Sea (SOLAS)
Amendments 2002, Chapter II-2/Regulation 19, Consolidated Edition 2004
is revised to incorporate the 2009 Consolidated Edition.
    The International Maritime Organization (IMO) International
Maritime Dangerous Goods Code, 2010 Edition, Incorporating Amendment
35-10, English Edition, Volumes 1 and 2 is revised to incorporate the
2012 Edition, Amendment 36-12.
    The International Organization for Standardization (ISO) entries
for ``ISO 10156:1996, Gases and Gas Mixtures--Determination of fire
potential and oxidizing ability for the selection of cylinder valve
outlets, Second edition, February 1996 (E)'' and ``ISO 10156-2:2005,
Gas cylinders--Gases and gas mixtures--Part 2: Determination of
oxidizing ability of toxic and corrosive gases and gas mixtures, First
edition, August 2005, (E)'' are removed and replaced with entry for
``ISO 10156:2010: Gases and gas mixtures--Determination of fire
potential and oxidizing ability for the selection of cylinder valve
outlets, Third edition, March 2010.''
    The entry ``ISO 4126-1: Safety valves--Part 1: General
requirements, December 15, 1991, First edition'' is revised as the
entry ``ISO 4126-1: Safety valves--Part 1: General requirements/Cor 1,
August 2, 2007, Second edition.'' The entry ``ISO 11117, Gas
cylinders--Valve protection caps and valve guards for industrial and
medical gas cylinders--Design, construction and tests, First edition,
August 1998, (E)'' is revised as the entry ``ISO 11117:2008/Cor 1:2009
Gas cylinders--Valve protection caps and valve guards--Design,
construction and tests, May 5, 2009, Second edition''.
    The entries ``ISO 4126-7: Safety valves--Part 7: Common data/Cor 1,
October 23, 2006, First edition,'' and ``ISO 13340 Transportable gas
cylinders--Cylinders valves for non-refillable cylinders--Specification
and prototype testing, April 5, 2001, First edition'' are added.
    The Transport Canada entry, Transportation of Dangerous Goods
Regulations, including Clear Language Amendments 1 through 7 is revised
to include Amendments 8, 9 and 10.
    The United Nations Recommendations on the Transport of Dangerous
Goods--Model Regulations, 16th Revised Edition (2009), Volumes I and
II, is revised to incorporate the 17th Revised Edition (2011), Volumes
I and II.
    The United Nations Recommendations on the Transport of Dangerous
Goods--Manual of Tests and Criteria, Fifth Revised Edition (2009), is
revised to incorporate Amendment 1 (2011).

Section 171.8

    This section defines terms generally used throughout the HMR that
have broad or multi-modal applicability. PHMSA is proposing to add the
following defined term based on its adoption in the 17th Revised
Edition of the UN Model Regulations: Flexible Bulk Container (FBC):
This term means a flexible container with a capacity not exceeding 15
cubic meters and includes liners and attached handling devices and
service equipment.
    Currently the HMR do not prescribe requirements for the transport
of FBCs. In this NPRM, PHMSA is proposing to adopt various
transportation and manufacturing requirements for FBCs. Prior to
adoption of such standards, the term ``Flexible Bulk Container'' must
be defined. Therefore in this NPRM we are proposing to adopt the above
definition of an FBC based on the definition for FBC adopted in the
IMDG Code and 17th Revised Edition of the UN Model Regulations.

Part 172

Section 172.101

    Section 172.101 provides instructions for using the Hazardous
Materials Table (HMT) and the HMT itself. In this NPRM, PHMSA is
proposing to revise the instructional text that precedes the HMT.
    Paragraph (c) of Sec.  172.101 describes the information indicated
in column 2 of the HMT. Column 2 lists the hazardous materials
descriptions and proper shipping names of materials designated as
hazardous materials. Paragraph (c)(10) of Sec.  172.101 prescribes how
mixtures or solutions not identified specifically by name are
described.
    In this NPRM, PHMSA proposes to revise Sec.  172.101(c)(10) to
incorporate language adopted in the 17th Revised Edition of the UN
Model Regulations that states mixtures and solutions must meet the
definition of one or more hazard class to be classified as a hazardous
material. This change will clarify that for a mixture or solution
composed of one or more components that are classified as a hazardous
material, the resulting mixture or solution must meet the definition of
one or more hazard classes to be classified as a hazardous material.
    Paragraph (k) of Sec.  172.101 explains the purpose of column (10)
of the HMT and prescribes the vessel stowage and segregation
requirements for specific entries in the HMT. Column (10) is divided
into two columns: column (10A) [Vessel stowage] specifies the
authorized stowage locations on board cargo and passenger vessels and
column (10B) [Other provisions] specifies special stowage and
segregation provisions.
    In this NPRM, we are proposing to modify these instructions by
revising the vessel stowage location requirements for explosives and
reducing the number of explosive stowage categories from 15 to 5.
Specifically, the explosive stowage categories 6 through 15 will be
eliminated and stowage categories 1 through 5 will be modified. Changes
to the explosive stowage categories are necessary because, as part of
this NPRM, PHMSA proposes to remove magazine stowage Types ``A,''
``C,'' and special stowage from Part 176 with the consolidation of
authorized explosive stowage categories. The authorized explosive
stowage categories will be replaced with a new term of art ``Closed
cargo transport units for Class 1 (explosives).'' Included in this
definition are freight containers or transport vehicles that are
structurally serviceable in accordance with

Sec.  176.172, portable magazines conforming to Sec.  176.137, and
small vessel compartments (i.e., mast lockers and deck house). These
changes will require Class 1 materials to be shipped in closed cargo
transport units as defined above when stowed on deck.
Hazardous Materials Table (HMT)
    In this NPRM, PHMSA is proposing to amend the HMT. Readers should
review all changes for a complete understanding of the amendments. For
purposes of the Government Printing Office's typesetting procedures,
proposed changes to the HMT appear under three sections of the Table,
``remove,'' ``add,'' and ``revise.'' Certain entries in the HMT, such
as those with revisions to the proper shipping names, appear as a
``remove'' and ``add.'' Proposed amendments to the HMT include the
following:
New HMT entries
UN3497 Krill meal
UN3498 Iodine monochloride, liquid

    This new HMT entry is a result of the division of the proper
shipping name Iodine monochloride into two authorized proper shipping
names; one for the liquid state of the commodity and another for the
solid state. Solid shipments of Iodine monochloride remain assigned to
UN1792.

UN3499 Capacitor, electric double layer (with an energy storage
capacity greater than 0.3 Wh)

    This new HMT entry is intended to cover capacitors with an energy
storage capacity greater than 0.3 Wh. Capacitors are assigned as a
Class 9 miscellaneous hazardous material and measures required to
prevent short circuit are provided in special provision 361.

UN3500 Chemical under pressure, n.o.s.
UN3501 Chemical under pressure, flammable, n.o.s.
UN3502 Chemical under pressure, toxic, n.o.s.
UN3503 Chemical under pressure, corrosive, n.o.s.
UN3504 Chemical under pressure, flammable, toxic, n.o.s.
UN3505 Chemical under pressure, flammable, corrosive, n.o.s.

    The ``Chemical under pressure. n.o.s.'' HMT entries are added to
address shipments of liquids or solids (e.g., adhesives, coatings, and
cleaners) combined with a gas or gas mixtures utilized to expel the
contents from pressure vessels. The primary hazard class for these
shipments is determined by the hazard presented by the propellant and
any subsidiary risk is determined by the properties of the liquid or
solid under pressure. Toxic gases are not permitted as propellants.

UN3506 Mercury contained in manufactured articles

    This new entry was created to separately address manufactured
articles containing mercury. The international community provided an
exception from regulation for instruments and articles containing not
more than 1 kg of mercury, when transported by means other than
aircraft. PHMSA is unable to adopt a comparable exception as the
reportable quantity for mercury is 0.454 kg (1.00 lbs.), but does
propose to revise the current exception authorized in Sec.  173.164(e)
for shipments containing less than 0.454 kg (1.00 pound) to include
transportation by vessel.
Removed HMT Entries
UN3492 Toxic by inhalation liquid, corrosive, flammable, n.o.s. with an
inhalation toxicity lower than or equal to 200 ml/m\3\ and saturated
vapor concentration greater than or equal to 500 LC50
UN3493 Toxic by inhalation liquid, corrosive, flammable, n.o.s. with an
inhalation toxicity lower than or equal to 1000 ml/m\3\ and saturated
vapor concentration greater than or equal to 10 LC50

    These entries are proposed for removal from the HMT due to their
similarity to UN3488 and UN3489 respectfully. The sole difference
between these entries is the order of subsidiary risks, which does not
affect the classification and transport conditions applied to shipments
of these substances. As a result, PHMSA proposes to remove
identification numbers UN3492 and UN3493 to avoid confusing shippers in
determining which identification numbers to use.
Amendments to the Column (1) Symbols
    Section 172.101(b) describes column (1) of the HMT and the
associated symbols that may be indicated in the column. In accordance
with Sec.  172.101(b), the symbol ``G'' identifies proper shipping
names for which one or more technical names of the hazardous material
must be entered in parentheses in association with the basic
description on a shipping paper. In this NPRM, PHMSA proposes to add a
``G'' to column (1) for ``UN1707, Thallium compounds, n.o.s.'' The
addition of a ``G'' to this entry will provide notification of the
technical name of this toxic material and thus aid emergency responders
with providing an appropriate response.
Amendments to the Column (2) Hazardous Materials Descriptions and
Proper Shipping Names
    Section 172.101(c) describes column (2) of the HMT and the
requirements for hazardous materials descriptions and proper shipping
names. Among other requirements, in accordance with Sec.
172.101(c)(1), proper shipping names indicated in column (2) of the HMT
may be used in the singular or the plural form interchangeably.
Regardless, in this NPRM, PHMSA is revising several entries in the HMT
to remove the plural ending letter ``s'' to provide continuity with the
internationally accepted proper shipping names. Specifically, PHMSA
proposes to remove the letter ``s'' from: UN1107, Amyl chlorides;
UN1111, Amyl mercaptans; UN1113, Amyl nitrites; and, UN2347, Butyl
Mercaptans.
    Generally the physical state (solid or liquid) appears before the
hazard characteristics (toxic, flammable, etc.) in the sequence of
wording used in proper shipping names specified in column (2) of the
HMT. In some instances, the hazard characteristics are indicated before
the physical state. In this NPRM, PHMSA is proposing changes to several
proper shipping names to indicate the physical state before the hazard
characteristics for consistency in formatting.
    Current proper shipping names:

------------------------------------------------------------------------
                  UN No.                        Proper shipping name
------------------------------------------------------------------------
3276......................................  Nitriles, toxic, liquid,
                                             n.o.s.
3278......................................  Organophosphorus compound,
                                             toxic, liquid, n.o.s.
3282......................................  Organometallic compound,
                                             toxic, liquid, n.o.s.
3439......................................  Nitriles, toxic, solid,
                                             n.o.s.
3464......................................  Organophosphorus compound,
                                             toxic, solid, n.o.s.
3467......................................  Organometallic compound,
                                             toxic, solid, n.o.s.
------------------------------------------------------------------------

    Proposed proper shipping names:

------------------------------------------------------------------------
                  UN No.                        Proper shipping name
------------------------------------------------------------------------
3276......................................  Nitriles, liquid, toxic,
                                             n.o.s.
3278......................................  Organophosphorus compound,
                                             liquid, toxic, n.o.s.
3282......................................  Organometallic compound,
                                             liquid, toxic, n.o.s.
3439......................................  Nitriles, solid, toxic,
                                             n.o.s.
3464......................................  Organophosphorus compound,
                                             solid, toxic, n.o.s.
3467......................................  Organometallic compound,
                                             solid, toxic, n.o.s.
------------------------------------------------------------------------

    Currently, the HMT includes the entry ``Toxic, liquids, organic,
n.o.s., UN2810'' with the proper shipping name indicated in column (2)
that includes a comma between the words ``toxic'' and ``liquid.'' This
is not

consistent with the UN Model Regulations, the ICAO Technical
Instructions, or the IMDG Code as there is no comma between the words
``Toxic'' and ``liquid.'' PHMSA proposes to revise this entry by
removing the comma for consistency with international standards and
regulations and to provide shippers with the most appropriate shipping
description.
    A new proper shipping name ``Cartridges for tools, blank'' is
proposed to be assigned to identification number UN0014. This proper
shipping name more appropriately describes industrial blank cartridges
currently described as ``UN0323, Cartridges, power device'' or ``ORM-D
or ORM-D-AIR, Cartridges, power device (used to project fastening
devices).'' In this NPRM, PHMSA is proposing to remove the ``ORM-D''
entry for ``Cartridges, power device (used to project fastening
devices)'' as the proper shipping name for such articles is now
``Cartridges for tools, blank'' under identification number UN0014.
Subsequent changes will be made to Sec.  173.63 and the Sec.
172.102(c)(1) special provision 347 to replace any references to ``ORM-
D or ORM-D-AIR, Cartridges, power device (used to project fastening
devices)'' with the new description ``UN0014, Cartridges for tools,
blank (used to project fastening devices).'' Additionally, such
articles are not subject to the UN Test Series 6(d) previously required
under special provision 347. The description ``UN0323, Cartridges,
power device'' will remain subject to special provision 347.
    The proper shipping name for ``UN1305, Vinyltrichlorosilane,
stabilized'' is amended by removing the term ``stabilized'' for
consistency with the Dangerous Goods Lists of the various international
standards and the HMT of the HMR. The proposed proper shipping name for
UN1305 is ``Vinyltrichlorosilane.''
    The 17th Revised Edition of the UN Model Regulations modified the
qualifying text (text in italics) for UN Nos. 3381-3390 and UN Nos.
3488-3491. The proposed changes to these entries' qualifying or
modifying text in italics would change the wording from ``with an
inhalation toxicity lower than or equal to'' to ``with an LC50 lower
than or equal to''. The intent of this terminology change is to better
identify the criteria used to determine the proper classification of
these substances.
    The entry ``Formaldehyde solutions (with not less than 10% and less
than 25% formaldehyde), see Aviation regulated liquid, n.o.s. or Other
regulated substances, liquid, n.o.s.'' appears in column (1) of the
HMT. PHMSA proposes to revise this entry by placing it into the correct
column (2) of the HMT. This is an editorial revision and simply
corrects an unintended error in the HMT.
Amendments to the Column (4) identification numbers
    Section 172.101(e) describes Column (4) of the HMT and the
designation of the identification number to each proper shipping name.
With the proposed addition of a separate identification number (UN3506)
for the description ``Mercury contained in manufactured articles,''
PHMSA proposes to remove the description that is currently assigned to
``UN2809, Mercury.''
Amendments to the Column (6) label(s)
    Section 172.101(g) describes Column (6) of the HMT and the labels
required (primary and subsidiary) for specific entries in the HMT. Data
presented to the UN Committee of Experts on the Transport of Dangerous
Goods in this last biennium indicated a need for the addition of
subsidiary risk of Division 6.1 (toxic) to be assigned to ``UN2809,
Mercury'' and to the new entry ``UN3506, Mercury contained in
manufactured articles.'' We note that for air transport, Special
provision A192 provides relief from the labeling and documentation
requirements of this new subsidiary risk.\1\
---------------------------------------------------------------------------

    \1\ The scientific data and background regarding the adoption of
these modifications are presented in working papers ST/SG/AC.10/C.3/
2010/6 and ST/SG/AC.10/C.3/2010/67 entitled ``Mercury (UN2809):
Subsidiary risk 6.1'' and ``Dimethyl disulphide (UN2381): subsidiary
risk 6.1.'' These papers can be viewed at the following URLs: http://www.unece.org/fileadmin/DAM/trans/doc/2010/ac10c3/ST-SG-AC10-C3-2010-06e.pdf. and http://www.unece.org/fileadmin/DAM/trans/doc/2010/ac10c3/ST-SG-AC10-C3-2010-67e.pdf.
---------------------------------------------------------------------------

    In addition to the changes above, data was also presented to the UN
Committee of Experts on the Transport of Dangerous Goods that indicated
the need for a subsidiary risk of Division 6.1 (toxic) to be assigned
to UN2381 Dimethyl disulfide.
    PHMSA proposes to make appropriate amendments to the HMT to account
for these revisions to the UN Model Regulations.
Amendments to the Column (7) Special Provisions
    Section 172.101(h) describes Column (7) of the HMT and the Sec.
172.102(c) Special provisions assigned to specific entries in the HMT.
The particular modifications to the entries in the HMT are discussed
below. See Section 172.102 special provisions for a detailed discussion
of the proposed additions, revisions, and deletions to the special
provisions addressed in this NPRM.
    Several HMT entries are revised to include bulk special provision
B120. Special provision B120 indicates that the material, when offered
in conformance with the applicable requirements of Part 178 and general
packaging requirements in Part 173, may be offered for transportation
in a Flexible Bulk Container. See Section 172.102 special provisions
for a detailed discussion of our proposed addition of special provision
B120.
    In this NPRM, special provision B120 is proposed to be assigned to
the following entries:

------------------------------------------------------------------------
                 Proper shipping name                        UN No.
------------------------------------------------------------------------
Naphthalene, crude or Naphthalene, refined............            UN1334
Sulfur (domestic and international entries)...........            UN1350
Calcium nitrate.......................................            UN1454
Magnesium nitrate.....................................            UN1474
Potassium nitrate.....................................            UN1486
Sodium nitrate........................................            UN1498
Sodium nitrate and potassium nitrate mixtures.........            UN1499
Ammonium nitrate, with not more than 0.2% total                   UN1942
 combustible material, including any organic
 substance, calculated as carbon to the exclusion of
 any other added substance............................
Ammonium nitrate based fertilizer.....................            UN2067
Paraformaldehyde......................................            UN2213
Environmentally hazardous substance, solid, n.o.s.....            UN3077
Sodium perborate monohydrate..........................            UN3377
Sodium carbonate peroxyhydrate........................            UN3378
------------------------------------------------------------------------

    In this NPRM, new special provision 363 is proposed to be assigned
to the following entries:

------------------------------------------------------------------------
                 Proper shipping name                        UN No.
------------------------------------------------------------------------
Gas oil or Diesel fuel or Heating oil, light..........            UN1202
Gasoline includes gasoline mixed with ethyl alcohol,              UN1203
 with not more than 10% alcohol.......................
Kerosene..............................................            UN1223
Petroleum distillates, n.o.s. or Petroleum products,              UN1268
 n.o.s................................................
Fuel, aviation, turbine engine........................            UN1863
Ethanol and gasoline mixture or Ethanol and motor                 UN3475
 spirit mixture or Ethanol and petrol mixture, with
 more than 10% ethanol................................
------------------------------------------------------------------------

    See Section 172.102 special provisions for a detailed discussion of
our proposed addition of special provision 363.
    The entry for UN1008 Boron trifluoride is assigned new special
provision 238. See Section 172.102 Special provisions for a detailed
discussion of our proposed addition of special provision 238.
    With the addition of a Division 6.1 (toxic) subsidiary risk to
``UN2381, Dimethyl disulfide,'' the portable tank codes and portable
tank provisions are proposed to be revised as follows:

T4 is replaced by T7
TP1 is replaced by TP2, TP13, and TP39

    See Section 172.102 Special provisions for a detailed discussion of
our proposed addition of special provision TP39.
    Review of the ``Guiding Principles for the Development of the UN
Model Regulations (Guiding Principles)'' indicates that in some cases,
the portable tank instructions for the transport of Division 4.3 liquid
materials are not consistent with the Guiding Principles, and, in other
instances, relevant portable tank special provisions were missing or
incorrectly assigned. The following changes are proposed with deletions
indicated by a strikethrough and additions or replacements shown in
bold font.
[GRAPHIC] [TIFF OMITTED] TP15AU12.031

    See Section 172.102 Special provisions for a detailed discussion of
our proposed addition of special provision TP41.
    Special provisions A100 and A103 are revised to clarify that the
weight (mass) limitations specified are net and not gross amounts for
secondary lithium batteries. See Section 172.102 Special provisions for
a detailed discussion of our proposed revision of special provisions
A100 and A103.
    Special provision A192 is added to note that regardless of the
Division 6.1 (toxic) subsidiary risk indicated in the HMT, the toxic
subsidiary risk label and an indication of the subsidiary risk on the
shipping paper are not required for manufactured articles containing
less than 0.454 kg (1.00 pound) of mercury. This special provision is
assigned to the entry ``UN3506, Mercury contained in manufactured
articles.''
    Special provision A200 is added to require that certain articles
may not be transported in passenger baggage and are to be shipped as
cargo when transported via aircraft. Under certain circumstances, the
articles affected by this special provision may be excepted from the
requirements of the HMR. When these articles are not subject to the
regulations, there is the potential for them to be inappropriately
carried aboard an aircraft. In response to this safety concern, the
ICAO Technical Instructions were revised to clarify that when
transported by aircraft, these articles, regardless of whether they are
otherwise excepted from the regulations, must be transported as cargo
and may not be carried onboard an aircraft by passengers or

crewmembers in carry-on baggage, checked baggage, or on their person
unless specifically excepted by Sec.  175.10, ``Exceptions for
Passengers, Crewmembers, and Air Operators.'' Consistent with the
revised ICAO Technical Instructions requirement, PHMSA proposes to
adopt the special provision restricting these items from being carried
aboard an aircraft by passengers and crewmembers.
    This special provision is assigned to the following entries:
``UN3166, Engines, internal combustion or Engines, fuel cell, flammable
gas powered''; ``UN3166, Engines, internal combustion or Engines, fuel
cell, flammable liquid powered''; ``UN3166, Vehicle, flammable gas
powered or Vehicle, fuel cell, flammable gas powered''; ``UN3166,
Vehicle, flammable liquid powered or Vehicle, fuel cell, flammable
liquid powered''; ``UN0503, Air bag inflators or Air bag modules or
Seat-belt pretensioners''; and ``UN3268, Air bag inflators or Air bag
modules or Seat-belt pretensioners.''
    Special provision W10 is assigned to ``UN3486, Calcium hypochlorite
mixture, dry, corrosive with more than 10% but not more than 39%
available chlorine'' and to ``UN2208, Calcium hypochlorite mixtures,
dry, with more than 10 percent but not more than 39 percent available
chlorine.'' Special provision W10 indicates that, when offered for
transportation by vessel, these entries may not be offered in Large
Packagings. See Section 172.102 Special provisions for a detailed
discussion of our proposed addition of special provision W10.
Amendments to the Column (9) quantity limitations
    Section 172.101(j) describes Column (9) of the HMT and the quantity
limitations for specific entries in the HMT. Furthermore, Columns (9A)
and (9B) specify the maximum quantities that may be offered for
transportation in one package by passenger-carrying aircraft or
passenger-carrying rail car (Column (9A)) or by cargo-only aircraft
(Column (9B)). Unless otherwise indicated the quantity limitations
shown in column (9) of the HMT are net. PHMSA proposes to remove the
gross weight indicator in columns (9A) (if authorized previously) and
(9B) for the following battery entries. The quantity limit for these
entries should be based on the weight of the battery or batteries and
not the weight of the battery or batteries plus the packaging (i.e.,
the package).

UN3028 Batteries, dry, containing potassium hydroxide solid, electric,
storage
UN2794 Batteries, wet, filled with acid, electric storage
UN2795 Batteries, wet, filled with alkali, electric storage
UN3468 Hydrogen in a metal hydride storage system or Hydrogen in a
metal hydride storage system contained in equipment or Hydrogen in a
metal hydride storage system packed with equipment
UN3090 Lithium battery
UN3091 Lithium batteries packed with equipment

    PHMSA is proposing to revise column (9A) to forbid several entries
previously authorized for shipment on passenger-carrying aircraft or
passenger-carrying rail to harmonize with changes to the ICAO Technical
Instructions. The following entries would now be forbidden on
passenger-carrying aircraft or passenger-carrying rail.

UN1162 Dimethyldichlorosilane
UN1196 Ethyltrichlorosilane
UN1250 Methyltrichlorosilane
UN1298 Trimethylchlorosilane
UN1305 Vinyltrichlorosilane
UN2985 Chlorosilanes, flammable, corrosive, n.o.s.
UN3361 Chlorosilanes, toxic, corrosive, n.o.s.
UN3362 Chlorosilanes, toxic, corrosive, flammable, n.o.s.

    Quantity limits of 450 L for ``UN3334, Aviation regulated liquid,
n.o.s.'' and 400 kg for ``UN3335, Aviation regulated solid, n.o.s.''
are proposed for both columns (9A) and (9B). Previously, there was no
limit to the amount authorized to be shipped in one package. These new
quantity limits are consistent with authorized quantity limits found in
the ICAO Technical Instructions.
Amendments to the Column (10) Vessel Stowage Requirements
Vessel Stowage Location (10A)
    Section 172.101(k) explains the purpose of column (10) of the HMT
and prescribes the vessel stowage and segregation requirements for
specific entries in the HMT. Column (10) is divided into two columns:
column (10A) [Vessel stowage] specifies the authorized stowage
locations on board cargo and passenger vessels and column (10B) [Other
provisions] specifies special stowage and segregation provisions.
    PHMSA is proposing to simplify the number of vessel stowage
locations for shipments of Class 1 explosive materials to harmonize
with recently adopted vessel explosive stowage categories in the IMDG
Code. Currently, there are 15 possible stowage location codes available
for assignment to column (10A) for explosive shipments. Recent changes
in the IMDG Code have reduced the number of available explosive stowage
location codes to five. This consolidation of codes was accomplished to
reduce the complexity of the regulations without compromising safety.
    The International Maritime Organization (IMO) determined that the
term ``magazine'' was no longer necessary and the magazine concept
could be incorporated into a broader definition for closed cargo
transport units for Class 1 (explosives) material. In general, a
magazine used to store and transport explosives is equivalent to a
closed cargo transport unit with a wooden floor. A magazine type A has
additional wooden walls, or walls covered with wooden pallets, and is
currently only assigned to 7 entries in the HMT. A magazine type C is
currently defined by a minimum distance to the ship's side of 2.4 m (8
feet). Proposed requirements to load Class 1 closed cargo transport
units a minimum distance of 2.4 m (8 feet) from the ship's side wall
remove the need for specific stowage category references to magazine
stowage type C. The IMO, taking into account the properties of various
classes and divisions of explosives, has determined that only 1.4S,
1.4G, 1.4D, and 1.4C explosives are acceptable on passenger ships.
PHMSA agrees. Therefore, PHMSA has removed the majority of Class 1
stowage location codes and revised the remaining codes. The codes
proposed for each Class 1 entry are grouped by proposed stowage code
(01, 02, 03, 04, or 05) as follows:
Proposed Explosive Stowage Category
01--means the material may be stowed ``on deck'' in closed cargo
transport units or ``under deck'' on a cargo vessel (up to 12
passengers) and on a passenger vessel
02--means the material may be stowed ``on deck'' in closed cargo
transport units or ``under deck'' on a cargo vessel (up to 12
passengers) and ``on deck'' in closed cargo transport units or ``under
deck'' in closed cargo transport units on a passenger vessel
03--means the material may be stowed ``on deck'' in closed cargo
transport units or ``under deck'' on a cargo vessel (up to 12
passengers) but the material is prohibited on a passenger vessel
04--means the material may be stowed ``on deck'' in closed cargo
transport units or ``under deck'' in closed cargo transports on a cargo
vessel (up to 12 passengers) but the material is prohibited on a
passenger vessel

05--means the material may be stowed ``on deck'' in closed cargo
transport units on a cargo vessel (up to 12 passengers) but the
material is prohibited on a passenger vessel

    Taking into account the properties of various classes and divisions
of explosives, the IMO determined new stowage category assignments as
follows:

------------------------------------------------------------------------
                                 Stowage                       Stowage
           Division              category       Division       category
------------------------------------------------------------------------
1.1A.........................           05  1.4F...........           05
1.1B.........................           05  1.1G...........           03
1.2B.........................           05  1.2G...........           03
1.4B.........................           05  1.3G...........           03
1.1C.........................           04  1.4G...........           02
1.2C.........................           04  1.2H...........           05
1.3C.........................           04  1.3H...........           05
1.4C.........................           02  1.1J...........           05
1.1D.........................           04  1.2J...........           05
1.2D.........................           04  1.3J...........           05
1.4D.........................           02  1.2K...........           05
1.5D.........................           03  1.3K...........           05
1.1E.........................           04  1.1L...........           05
1.2E.........................           04  1.2L...........           05
1.4E.........................           03  1.3L...........           05
1.1F.........................           05  1.6N...........           03
1.2F.........................           05  1.4S...........           01
1.3F.........................           05
------------------------------------------------------------------------

    PHMSA agrees with the assignments and, in particular, agrees that
only 1.4S, 1.4G, 1.4D, and 1.4C explosives are acceptable on passenger
ships.
    Column (10A) in the HMT is revised to read Stowage Category 01 for
the following proper shipping names and corresponding identification
numbers:

------------------------------------------------------------------------
    Proper shipping name        UN No.   Proper shipping name    UN No.
------------------------------------------------------------------------
Articles, explosive, n.o.s..     UN0349  Fuse, safety........     UN0105
Articles, pyrotechnic for        UN0432  Fuzes, detonating...     UN0367
 technical purposes.
Cartridges, power device....     UN0323  Fuzes, igniting.....     UN0368
Cartridges, signal..........     UN0405  Grenades, practice,      UN0110
                                          hand or rifle.
Cartridges for weapons,          UN0014  Igniters............     UN0454
 blank or Cartridges, small
 arms, blank or Cartridges
 for tools, blank.
Cartridges for weapons,          UN0012  Lighters, fuse......     UN0131
 inert projectile or
 Cartridges, small arms.
Cases, cartridge, empty with     UN0055  Primers, cap type...     UN0044
 primer.
Charges, bursting, plastics      UN0460  Primers, tubular....     UN0376
 bonded.
Charges, explosive,              UN0445  Projectiles, inert       UN0345
 commercial without                       with tracer.
 detonator.
Charges, shaped, without         UN0441  Release devices,         UN0173
 detonator.                               explosive.
Components, explosive train,     UN0384  Rivets, explosive...     UN0174
 n.o.s.
Cutters, cable, explosive...     UN0070  Signal devices, hand     UN0373
Detonator assemblies, non-       UN0500  Signals, distress,       UN0506
 electric, for blasting.                  ship.
Detonators for ammunition...     UN0366  Signals, railway         UN0193
                                          track, explosive.
Detonators, electric for         UN0456  Signals, smoke......     UN0507
 blasting.
Detonators, non-electric for     UN0455  Substances,              UN0481
 blasting.                                explosive, n.o.s.
Fireworks...................     UN0337  Toy Caps............     NA0337
Flares, aerial..............     UN0404
------------------------------------------------------------------------

    Column (10A) in the HMT is revised to read Stowage Category 02 for
the following proper shipping names and corresponding identification
numbers:

------------------------------------------------------------------------
    Proper shipping name        UN No.   Proper shipping name    UN No.
------------------------------------------------------------------------
5-Mercaptotetrazol-1-acetic      UN0448  Flares, aerial......     UN0403
 acid.
Air bag inflators, or Air        UN0503  Fuse, igniter            UN0103
 bag modules, or Seat-belt                tubular metal clad.
 pretensioners.
Ammunition, illuminating         UN0297  Fuzes, detonating,       UN0410
 with or without burster,                 with protective
 expelling charge or                      features.
 propelling charge.
Ammunition, incendiary with      UN0300  Fuzes, igniting.....     UN0317
 or without burster,
 expelling charge or
 propelling charge.
Ammunition, practice........     UN0362  Grenades practice,       UN0452
                                          hand or rifle.
Ammunition, proof...........     UN0363  Igniters............     UN0325
Ammunition, smoke with or        UN0303  Jet perforating          NA0494
 without burster, expelling               guns, charged oil
 charge or propelling charge.             well, with
                                          detonator.

Ammunition, tear-producing       UN0301  Jet perforating          UN0494
 with burster, expelling                  guns, charged, oil
 charge or propelling charge.             well, without
                                          detonator.
Articles, explosive, n.o.s..     UN0351  Powder, smokeless...     UN0509
Articles, explosive, n.o.s..     UN0352  Primers, tubular....     UN0320
Articles, explosive, n.o.s..     UN0353  Projectiles, inert,      UN0425
                                          with tracer.
Articles, explosive, n.o.s..     UN0354  Projectiles, with        UN0347
                                          burster or
                                          expelling charge.
Articles, pyrotechnic for        UN0431  Projectiles, with        UN0435
 technical purposes.                      burster or
                                          expelling charge.
Cartridges for weapons,          UN0338  Projectiles, with        UN0344
 blank or Cartridges, small               bursting charge.
 arms, blank.
Cartridges for weapons,          UN0339  Propellant, solid...     UN0501
 inert projectile or
 Cartridges, small arms.
Cartridges, oil well........     UN0278  Rockets, line-           UN0453
                                          throwing.
Cartridges, power device....     UN0276  Rockets, with            UN0438
                                          expelling charge.
Cartridges, signal..........     UN0312  Rockets, with inert      UN0502
                                          head.
Cases, cartridges, empty         UN0379  Signal devices, hand     UN0191
 with primer.
Cases, combustible, empty,       UN0446  Signals, distress,       UN0505
 without primer.                          ship.
Charges, bursting, plastics      UN0459  Signals, railway         UN0493
 bonded.                                  track, explosive.
Charges, explosive,              UN0444  Signals, smoke......     UN0197
 commercial without
 detonator.
Charges, propelling.........     UN0491  Substances,              UN0479
                                          explosive, n.o.s.
Charges, shaped, flexible,       UN0237  Substances,              UN0480
 linear.                                  explosive, n.o.s.
Charges, shaped, without         UN0440  Substances,              UN0485
 detonator.                               explosive, n.o.s.
Cord, detonating, flexible..     UN0289  Tetrazol-1-acetic        UN0407
                                          acid.
Cord, detonating, mild           UN0104  Tracers for              UN0306
 effect or Fuse, detonating,              ammunition.
 mild effect metal clad.
Cord, igniter...............     UN0066  Warheads, rocket         UN0370
                                          with burster or
                                          expelling charge.
Fireworks...................     UN0336
------------------------------------------------------------------------

    Column (10A) in the HMT is revised to read Stowage Category 03 for
the following proper shipping names and corresponding identification
numbers:

------------------------------------------------------------------------
    Proper shipping name        UN No.   Proper shipping name    UN No.
------------------------------------------------------------------------
Ammonium nitrate-fuel oil        NA0331  Flares, aerial......     UN0421
 mixture containing only
 prilled ammonium nitrate
 and fuel oil.
Ammunition, illuminating         UN0171  Flares, surface.....     UN0092
 with or without burster,
 expelling charge or
 propelling charge.
Ammunition, illuminating         UN0254  Flares, surface.....     UN0418
 with or without burster,
 expelling charge or
 propelling charge.
Ammunition, incendiary with      UN0009  Flares, surface.....     UN0419
 or without burster,
 expelling charge, or
 propelling charge.
Ammunition, incendiary with      UN0010  Flash powder........     UN0094
 or without burster,
 expelling charge, or
 propelling charge.
Ammunition, practice........     UN0488  Flash powder........     UN0305
Ammunition, smoke with or        UN0015  Fuse, non-detonating     UN0101
 without burster, expelling               instantaneous or
 charge or propelling charge.             quickmatch.
Ammunition, smoke with or        UN0016  Fuzes, igniting.....     UN0316
 without burster, expelling
 charge or propelling charge.
Ammunition, tear-producing       UN0018  Grenades, practice,      UN0318
 with burster, expelling                  hand or rifle.
 charge or propelling charge.
Ammunition, tear-producing       UN0019  Grenades, practice,      UN0372
 with burster, expelling                  hand or rifle.
 charge or propelling charge.
Articles, explosive,             UN0486  Igniters............     UN0121
 extremely insensitive or
 Articles, EEI.
Articles, explosive, n.o.s..     UN0471  Igniters............     UN0314
Articles, pyrotechnic for        UN0428  Igniters............     UN0315
 technical purposes.
Articles, pyrotechnic for        UN0429  Primers, tubular....     UN0319
 technical purposes.
Articles, pyrotechnic for        UN0430  Projectiles, inert,      UN0424
 technical purposes.                      with tracer.
Bombs, photo-flash..........     UN0039  Projectiles, with        UN0434
                                          burster or
                                          expelling charge.
Bombs, photo-flash..........     UN0299  Rockets, line-           UN0238
                                          throwing.
Cartridges for weapons, with     UN0412  Rockets, line-           UN0240
 bursting charge.                         throwing.
Cartridges, flash...........     UN0049  Signals, distress,       UN0194
                                          ship.
Cartridges, flash...........     UN0050  Signals, distress,       UN0195
                                          ship.
Cartridges, signal..........     UN0054  Signals, railway         UN0192
                                          track, explosive.
Explosive, blasting, type B      UN0331  Signals, railway         UN0492
 or Agent blasting, Type B.               track, explosive.
Explosive, blasting, type E      UN0332  Signals, smoke......     UN0196
 or Agent blasting, Type E.
Fireworks...................     UN0333  Signals, smoke......     UN0313
Fireworks...................     UN0334  Signals, smoke......     UN0487
Fireworks...................     UN0335  Substances,              UN0476
                                          explosive, n.o.s.
Flares, aerial..............     UN0093  Substances,              UN0478
                                          explosive, n.o.s.
Flares, aerial..............     UN0420  Substances,              UN0482
                                          explosive, very
                                          insensitive, n.o.s.
                                          or Substances, EVI,
                                          n.o.s.
                                         Tracers for              UN0212
                                          ammunition.
------------------------------------------------------------------------

    Column (10A) in the HMT is revised to read Stowage Category 04 for
the following proper shipping names and corresponding identification
numbers:

------------------------------------------------------------------------
    Proper shipping name        UN No.   Proper shipping name    UN No.
------------------------------------------------------------------------
1H-Tetrazole................     UN0504  Hexolite, or Hexotol     UN0118
                                          dry or wetted with
                                          less than 15
                                          percent water, by
                                          mass.
1-Hydroxybenzotriazole,          UN0508  Hexotonal...........     UN0393
 anhydrous, dry or wetted
 with less than 20 percent
 water, by mass.
5-Nitrobenzotriazol.........     UN0385  Jet perforating          NA0124
                                          guns, charged oil
                                          well, with
                                          detonator.
Ammonium nitrate, with more      UN0222  Jet perforating          UN0124
 than 0.2 percent                         guns, charged oil
 combustible substances,                  well, without
 including any organic                    detonator.
 substance calculated as
 carbon, to the exclusion of
 any other added substance.
Ammonium perchlorate........     UN0402  Mannitol                 UN0133
                                          hexanitrate, wetted
                                          or Nitromannite,
                                          wetted with not
                                          less than 40
                                          percent water, or
                                          mixture of alcohol
                                          and water, by mass.
Ammonium picrate, dry or         UN0004  Mines with bursting      UN0137
 wetted with less than 10                 charge.
 percent water, by mass.
Articles, explosive, n.o.s..     UN0462  Mines with bursting      UN0138
                                          charge.
Articles, explosive, n.o.s..     UN0463  Nitro urea..........     UN0147
Articles, explosive, n.o.s..     UN0464  Nitrocellulose, dry      UN0340
                                          or wetted with less
                                          than 25 percent
                                          water (or alcohol),
                                          by mass.
Articles, explosive, n.o.s..     UN0466  Nitrocellulose,          UN0343
                                          plasticized with
                                          not less than 18
                                          percent
                                          plasticizing
                                          substance, by mass.
Articles, explosive, n.o.s..     UN0467  Nitrocellulose,          UN0341
                                          unmodified or
                                          plasticized with
                                          less than 18
                                          percent
                                          plasticizing
                                          substance, by mass.
Articles, explosive, n.o.s..     UN0468  Nitrocellulose,          UN0342
                                          wetted with not
                                          less than 25
                                          percent alcohol, by
                                          mass.
Articles, explosive, n.o.s..     UN0470  Nitroglycerin,           UN0143
                                          desensitized with
                                          not less than 40
                                          percent non-
                                          volatile water
                                          insoluble
                                          phlegmatizer, by
                                          mass.
Black powder or Gunpowder,       UN0027  Nitroglycerin,           UN0144
 granular or as a meal.                   solution in
                                          alcohol, with more
                                          than 1 percent but
                                          not more than 10
                                          percent
                                          nitrogylcerin.
Black powder, compressed or      UN0028  Nitroguanidine or        UN0282
 Gunpowder, compressed or                 Picrite, dry or
 Black powder, in pellets or              wetted with less
 Gunpowder, in pellets.                   than 20 percent
                                          water, by mass.
                                         Nitrostarch, dry or      UN0146
                                          wetted with less
                                          than 20 percent
                                          water, by mass.
Bombs, photo-flash..........     UN0038  Nitrotriazolone or       UN0490
                                          NTO.
Bombs, with bursting charge.     UN0034  Octolite or Octol,       UN0266
                                          dry or wetted with
                                          less than 15
                                          percent water, by
                                          mass.
Bombs, with bursting charge.     UN0035  Octonal.............     UN0496
Boosters, without detonator.     UN0042  Pentaerythrite           UN0411
                                          tetranitrate or
                                          Pentaerythritol
                                          tetranitrate or
                                          PETN, with not less
                                          than 7 percent wax
                                          by mass.
Boosters, without detonator.     UN0283  Pentaerythrite           UN0150
                                          tetranitrate,
                                          wetted or
                                          Pentaerythritol
                                          tetranitrate,
                                          wetted, or PETN,
                                          wetted with not
                                          less than 25
                                          percent water, by
                                          mass, or
                                          Pentaerythrite
                                          tetranitrate, or
                                          Pentaerythritol
                                          tetranitrate or
                                          PETN, desensitized
                                          with not less than
                                          15 percent
                                          phlegmatizer by
                                          mass.
Bursters, explosive.........     UN0043  Pentolite, dry or        UN0151
                                          wetted with less
                                          than 15 percent
                                          water, by mass.
Cartridges for weapons,          UN0326  Powder cake, wetted      UN0433
 blank.                                   or Powder paste,
                                          wetted with not
                                          less than 17
                                          percent alcohol by
                                          mass.
Cartridges for weapons,          UN0413  Powder cake, wetted      UN0159
 blank.                                   or Powder paste,
                                          wetted with not
                                          less than 25
                                          percent water, by
                                          mass.
Cartridges for weapons,          UN0327  Powder, smokeless...     UN0160
 blank or Cartridges, small
 arms, blank.
Cartridges for weapons,          UN0328  Powder, smokeless...     UN0161
 inert projectile.
Cartridges for weapons,          UN0417  Projectiles, with        UN0346
 inert projectile or                      burster or
 Cartridges, small arms.                  expelling charge.
Cartridges for weapons, with     UN0006  Projectiles, with        UN0168
 bursting charge.                         bursting charge.
Cartridges for weapons, with     UN0321  Projectiles, with        UN0169
 bursting charge.                         bursting charge.
Cartridges, oil well........     UN0277  Propellant, liquid..     UN0495
Cartridges, power device....     UN0275  Propellant, liquid..     UN0497
Cartridges, power device....     UN0381  Propellant, solid...     UN0498
Cases, combustible, empty,       UN0447  Propellant, solid...     UN0499
 without primer.
Charges, bursting, plastics      UN0457  RDX and HMX              UN0391
 bonded.                                  mixtures, wetted
                                          with not less than
                                          15 percent water by
                                          mass or RDX and HMX
                                          mixtures,
                                          desensitized with
                                          not less than 10
                                          percent
                                          phlegmatizer by
                                          mass.
Charges, bursting, plastics      UN0458  Rocket motors.......     UN0186
 bonded.
Charges, demolition.........     UN0048  Rocket motors.......     UN0280
Charges, depth..............     UN0056  Rocket motors.......     UN0281
Charges, explosive,              UN0442  Rockets, with            UN0181
 commercial without                       bursting charge.
 detonator.
Charges, explosive,              UN0443  Rockets, with            UN0182
 commercial without                       bursting charge.
 detonator.
Charges, propelling.........     UN0271  Rockets, with            UN0436
                                          expelling charge.

Charges, propelling.........     UN0272  Rockets, with            UN0437
                                          expelling charge.
Charges, propelling.........     UN0415  Rockets, with inert      UN0183
                                          head.
Charges, propelling, for         UN0242  Sodium dinitro-o-        UN0234
 cannon.                                  cresolate, dry or
                                          wetted with less
                                          than 15 percent
                                          water, by mass.
Charges, propelling, for         UN0279  Sodium picramate,        UN0235
 cannon.                                  dry or wetted with
                                          less than 20
                                          percent water, by
                                          mass.
Charges, propelling, for         UN0414  Sounding devices,        UN0374
 cannon.                                  explosive.
Charges, shaped, flexible,       UN0288  Sounding devices,        UN0375
 linear.                                  explosive.
Charges, shaped, without         UN0059  Substances,              UN0474
 detonator.                               explosive, n.o.s.
Charges, shaped, without         UN0439  Substances,              UN0475
 detonator.                               explosive, n.o.s.
Charges, supplementary           UN0060  Substances,              UN0477
 explosive.                               explosive, n.o.s.
Cord detonating or Fuse          UN0102  Tetranitroaniline...     UN0207
 detonating metal clad.
Cord, detonating or Fuse,        UN0290  Torpedoes with           UN0329
 detonating metal clad.                   bursting charge.
Cord, detonating, flexible..     UN0065  Torpedoes with           UN0451
                                          bursting charge.
Cyclotetramethylenetetranitr     UN0484  Trinitroaniline or       UN0153
 amine, desensitized or                   Picramide.
 Octogen, desensitized or
 HMX, desensitized.
Cyclotetramethylenetetranitr     UN0226  Trinitroanisole.....     UN0213
 amine, wetted or HMX,
 wetted or Octogen, wetted
 with not less than 15
 percent water, by mass.
Cyclotrimethylenetrinitramin     UN0483  Trinitrobenzene, dry     UN0214
 e, desensitized or                       or wetted with less
 Cyclonite, desensitized or               than 30 percent
 Hexogen, desensitized or                 water, by mass.
 RDX, desensitized.
Cyclotrimethylenetrinitramin     UN0072  Trinitrobenzenesulfo     UN0386
 e, wetted or Cyclonite,                  nic acid.
 wetted or Hexogen, wetted
 or RDX, wetted with not
 less than 15 percent water
 by mass.
Deflagrating metal salts of      UN0132  Trinitrobenzoic          UN0215
 aromatic nitroderivatives,               acid, dry or wetted
 n.o.s..                                  with less than 30
                                          percent water, by
                                          mass.
Diethyleneglycol dinitrate,      UN0075  Trinitrochlorobenzen     UN0155
 desensitized with not less               e or Picryl
 than 25 percent non-                     chloride.
 volatile water-insoluble
 phlegmatizer, by mass.
Dinitroglycoluril or Dingu..     UN0489  Trinitrofluorenone..     UN0387
Dinitrophenol, dry or wetted     UN0076  Trinitro-m-cresol...     UN0216
 with less than 15 percent
 water, by mass.
Dinitrophenolates alkali         UN0077  Trinitronaphthalene.     UN0217
 metals, dry or wetted with
 less than 15 percent water,
 by mass.
Dinitroresorcinol, dry or        UN0078  Trinitrophenetole...     UN0218
 wetted with less than 15
 percent water, by mass.
Dinitrosobenzene............     UN0406  Trinitrophenol or        UN0154
                                          Picric acid, dry or
                                          wetted with less
                                          than 30 percent
                                          water, by mass.
Dipicryl sulfide, dry or         UN0401  Trinitrophenylmethyl     UN0208
 wetted with less than 10                 nitramine or Tetryl.
 percent water, by mass.
Explosive, blasting, type A.     UN0081  Trinitroresorcinol       UN0219
                                          or Styphnic acid,
                                          dry or wetted with
                                          less than 20
                                          percent water, or
                                          mixture of alcohol
                                          and water, by mass.
Explosive, blasting, type B.     UN0082  Trinitroresorcinol,      UN0394
                                          wetted or Styphnic
                                          acid, wetted with
                                          not less than 20
                                          percent water, or
                                          mixture of alcohol
                                          and water by mass.
Explosive, blasting, type C.     UN0083  Trinitrotoluene and      UN0388
                                          Trinitrobenzene
                                          mixtures or TNT and
                                          trinitrobenzene
                                          mixtures or TNT and
                                          hexanitrostilbene
                                          mixtures or
                                          Trinitrotoluene and
                                          hexanitrostilnene
                                          mixtures.
Explosive, blasting, type D.     UN0084  Trinitrotoluene          UN0389
                                          mixtures containing
                                          Trinitrobenzene and
                                          Hexanitrostilbene
                                          or TNT mixtures
                                          containing
                                          trinitrobenzene and
                                          hexanitrostilbene.
Explosive, blasting, type E.     UN0241  Trinitrotoluene or       UN0209
                                          TNT, dry or wetted
                                          with less than 30
                                          percent water, by
                                          mass.
Fracturing devices,              UN0099  Tritonal............     UN0390
 explosive, without
 detonators for oil wells.
Fuzes, detonating, with          UN0408  Urea nitrate, dry or     UN0220
 protective features.                     wetted with less
                                          than 20 percent
                                          water, by mass.
Fuzes, detonating, with          UN0409  Warheads, rocket         UN0286
 protective features.                     with bursting
                                          charge.
Grenades, hand or rifle,         UN0284  Warheads, rocket         UN0287
 with bursting charge.                    with bursting
                                          charge.
Grenades, hand or rifle,         UN0285  Warheads, torpedo        UN0221
 with bursting charge.                    with bursting
                                          charge.
Hexanitrodiphenylamine or        UN0079  Zirconium picramate,     UN0236
 Dipicrylamine or Hexyl.                  dry or wetted with
                                          less than 20
                                          percent water, by
                                          mass.
Hexanitrostilbene...........     UN0392
------------------------------------------------------------------------

    Column (10A) in the HMT is revised to read Stowage Category 05 for
the following proper shipping names and corresponding identification
numbers:

------------------------------------------------------------------------
    Proper shipping name        UN No.   Proper shipping name    UN No.
------------------------------------------------------------------------
Ammunition smoke, white          UN0245  Diazodinitrophenol,      UN0074
 phosphorus with burster,                 wetted with not
 expelling charge, or                     less than 40
 propelling charge.                       percent water or
                                          mixture of alcohol
                                          and water, by mass.
Ammunition, incendiary           UN0247  Fuzes, detonating...     UN0106
 liquid or gel, with
 burster, expelling charge
 or propelling charge.
Ammunition, incendiary,          UN0243  Fuzes, detonating...     UN0107
 white phosphorus, with
 burster, expelling charge
 or propelling charge.
Ammunition, incendiary,          UN0244  Fuzes, detonating...     UN0257
 white phosphorus, with
 burster, expelling charge
 or propelling charge.
Ammunition, smoke, white         UN0246  Grenades, hand or        UN0292
 phosphorus with burster,                 rifle, with
 expelling charge, or                     bursting charge.
 propelling charge.
Ammunition, toxic with           UN0020  Grenades, hand or        UN0293
 burster, expelling charge,               rifle, with
 or propelling charge.                    bursting charge.
Ammunition, toxic with           UN0021  Guanyl                   UN0113
 burster, expelling charge,               nitrosaminoguanylid
 or propelling charge.                    ene hydrazine,
                                          wetted with not
                                          less than 30
                                          percent water, by
                                          mass.
Articles, explosive, n.o.s..     UN0350  Guanyl                   UN0114
                                          nitrosaminoguanylte
                                          trazene, wetted or
                                          Tetrazene, wetted
                                          with not less than
                                          30 percent water or
                                          mixture of alcohol
                                          and water, by mass.
Articles, explosive, n.o.s..     UN0355  Lead azide, wetted       UN0129
                                          with not less than
                                          20 percent water or
                                          mixture of alcohol
                                          and water, by mass.
Articles, explosive, n.o.s..     UN0356  Lead styphnate,          UN0130
                                          wetted or Lead
                                          trinitroresorcinate
                                          , wetted with not
                                          less than 20
                                          percent water or
                                          mixture of alcohol
                                          and water, by mass.
Articles, explosive, n.o.s..     UN0465  Mercury fulminate,       UN0135
                                          wetted with not
                                          less than 20
                                          percent water, or
                                          mixture of alcohol
                                          and water, by mass.
Articles, explosive, n.o.s..     UN0469  Mines with bursting      UN0136
                                          charge.
Articles, explosive, n.o.s..     UN0472  Mines with bursting      UN0294
                                          charge.
Articles, pyrophoric........     UN0380  Primers, cap type...     UN0377
Barium azide, dry or wetted      UN0224  Primers, cap type...     UN0378
 with less than 50 percent
 water, by mass.
Bombs with flammable liquid,     UN0399  Projectiles, with        UN0426
 with bursting charge.                    burster or
                                          expelling charge.
Bombs with flammable liquid,     UN0400  Projectiles, with        UN0427
 with bursting charge.                    burster or
                                          expelling charge.
Bombs, photo-flash..........     UN0037  Projectiles, with        UN0167
                                          bursting charge.
Bombs, with bursting charge.     UN0033  Projectiles, with        UN0324
                                          bursting charge.
Bombs, with bursting charge.     UN0291  Rocket motors with       UN0250
                                          hypergolic liquids
                                          with or without an
                                          expelling charge.
Boosters with detonator.....     UN0225  Rocket motors with       UN0322
                                          hypergolic liquids
                                          with or without an
                                          expelling charge.
Boosters with detonator.....     UN0268  Rocket motors,           UN0395
                                          liquid fueled.
Cartridges for weapons, with     UN0005  Rocket motors,           UN0396
 bursting charge.                         liquid fueled.
Cartridges for weapons, with     UN0007  Rockets, liquid          UN0397
 bursting charge.                         fueled with
                                          bursting charge.
Cartridges for weapons, with     UN0348  Rockets, liquid          UN0398
 bursting charge.                         fueled with
                                          bursting charge.
Components, explosive train,     UN0382  Rockets, with            UN0180
 n.o.s.                                   bursting charge.
Components, explosive train,     UN0383  Rockets, with            UN0295
 n.o.s.                                   bursting charge.
Components, explosive train,     UN0461  Samples, explosive,      UN0190
 n.o.s.                                   other than
                                          initiating
                                          explosives.
Contrivances, water-             UN0248  Sounding devices,        UN0204
 activated, with burster,                 explosive.
 expelling charge or
 propelling charge.
Contrivances, water-             UN0249  Sounding devices,        UN0296
 activated, with burster,                 explosive.
 expelling charge or
 propelling charge.
Detonator assemblies, non-       UN0360  Substances,              UN0357
 electric for blasting.                   explosive, n.o.s.
Detonator assemblies, non-       UN0361  Substances,              UN0358
 electric for blasting.                   explosive, n.o.s.
Detonators for ammunition...     UN0073  Substances,              UN0359
                                          explosive, n.o.s.
Detonators for ammunition...     UN0364  Substances,              UN0473
                                          explosive, n.o.s.
Detonators for ammunition...     UN0365  Torpedoes with           UN0330
                                          bursting charge.
Detonators, electric, for        UN0030  Torpedoes, liquid        UN0450
 blasting.                                fueled, with inert
                                          head.
Detonators, electric, for        UN0255  Torpedoes, liquid        UN0449
 blasting.                                fueled, with or
                                          without bursting
                                          charge.
Detonators, non-electric,        UN0029  Warheads, rocket         UN0371
 for blasting.                            with burster or
                                          expelling charge.
Detonators, non-electric,        UN0267  Warheads, rocket         UN0369
 for blasting.                            with bursting
                                          charge.
------------------------------------------------------------------------

    Vessel stowage codes (10B).
    Section 172.101(k) describes Column (10) of the HMT and the vessel
stowage requirements for specific entries in the HMT. Furthermore,
column (10B) [Other provisions] specifies codes for stowage
requirements for specific hazardous materials. The meaning of each code
in Column (10B) is set forth in Sec.  176.84 of this subchapter.
    Vessel shipments of Class 1 explosives are currently required to be
stored away from all sources of heat including steam pipes, heating
coils, sparks, and flame in accordance with Sec.  176.116(a). In
addition to this general provision in Sec.  176.116, several vessel
stowage codes in column (10B) make reference to shading or stowing away
from heat. To harmonize with the IMDG Code, reduce the number of
redundant vessel stowage codes, and incorporate the addition of a new
definition for protected from sources of heat (see Section 176.2 of
this NPRM for definition) PHMSA proposes to delete vessel stowage codes
50 and 48 and replace all references to these codes with stowage code
25. See Section 176.84 for a detailed discussion of our proposed
revision to stowage code 25.
    The following proper shipping names and corresponding
identification numbers will have stowage code 48 replaced with stowage
code 25 in Column (10B) in the HMT.

------------------------------------------------------------------------
    Proper shipping name        UN No.   Proper shipping name    UN No.
------------------------------------------------------------------------
Aerosols, poison, Packing        UN1950  Calcium hypochlorite     UN3486
 Group III (each not                      mixture, dry,
 exceeding 1 L capacity).                 corrosive with more
                                          than 10% but not
                                          more than 39%
                                          available chlorine.
Aerosols, flammable, (each       UN1950  Calcium hypochlorite     UN2208
 not exceeding 1 L capacity).             mixtures, dry, with
                                          more than 10
                                          percent but not
                                          more than 39
                                          percent available
                                          chlorine.
Aerosols, flammable, n.o.s.      UN1950  Copra...............     UN1363
 (engine starting fluid)
 (each not exceeding 1 L
 capacity).
Aerosols, non-flammable,         UN1950  Dichlorophenyl           UN2250
 (each not exceeding 1 L                  isocyanates.
 capacity).
Aerosols, poison, (each not      UN1950  Dicyclohexylammonium     UN2687
 exceeding 1 L capacity).                 nitrite.
Ammonium nitrate based           UN2067  Gallium.............     UN2803
 fertilizer.
Ammonium nitrate emulsion or     UN3375  Hypochlorites,           UN3212
 Ammonium nitrate suspension              inorganic, n.o.s.
 or Ammonium nitrate gel,
 intermediate for blasting
 explosives.
Ammonium nitrate, with not       UN1942  Isocyanates, toxic,      UN3080
 more than 0.2% total                     flammable, n.o.s.
 combustible material,                    or Isocyanate
 including any organic                    solutions, toxic,
 substance, calculated as                 flammable, n.o.s.,
 carbon to the exclusion of               flash point not
 any other added substance.               less than 23
                                          degrees C but not
                                          more than 61
                                          degrees C and
                                          boiling point less
                                          than 300 degrees C.
Batteries, nickel-metal          UN3496  Isocyanates, toxic,      UN2206
 hydride see Batteries, dry,              n.o.s. or
 sealed, n.o.s. for nickel-               Isocyanate
 metal hydride batteries                  solutions, toxic,
 transported by modes other               n.o.s., flash point
 than vessel.                             more than 61
                                          degrees C and
                                          boiling point less
                                          than 300 degrees C.
Benzyldimethylamine.........     UN2619  Isocyanatobenzotrifl     UN2285
                                          uorides.
5-tert-Butyl-2,4,6-trinitro-     UN2956  Lithium                  UN1471
 m-xylene or Musk xylene.                 hypochlorite, dry
                                          or Lithium
                                          hypochlorite
                                          mixture.
Calcium hypochlorite, dry,       UN3485  Methacrylonitrile,       UN3079
 corrosive or Calcium                     stabilized.
 hypochlorite mixtures, dry,
 corrosive with more than
 39% available chlorine
 (8.8% available oxygen).
Calcium hypochlorite, dry or     UN1748  Phosphorous acid....     UN2834
 Calcium hypochlorite
 mixtures dry with more than
 39 percent available
 chlorine (8.8 percent
 available oxygen).
Calcium hypochlorite,            UN3487  Propylene                UN2611
 hydrated, corrosive or                   chlorohydrins.
 Calcium hypochlorite,
 hydrated mixture, corrosive
 with not less than 5.5% but
 not more than 16% water.
Calcium hypochlorite,            UN2880  Sodium carbonate         UN3378
 hydrated or Calcium                      peroxyhydrate.
 hypochlorite, hydrated
 mixtures, with not less
 than 5.5 percent but not
 more than 16 percent water.
                                         Sodium perborate         UN3377
                                          monohydrate.
------------------------------------------------------------------------

    The following proper shipping names and corresponding
identification numbers will have stowage code 19 replaced with stowage
code 25 in Column (10B) in the HMT if stowage code 25 is not currently
listed in Column (10B). If the proper shipping name already is
currently assigned both stowage code 19 and 25; stowage code 19 will be
deleted.

------------------------------------------------------------------------
    Proper shipping name        UN No.   Proper shipping name    UN No.
------------------------------------------------------------------------
Copra.......................     UN1363  Plastic molding          UN3314
                                          compound in dough,
                                          sheet or extruded
                                          rope form evolving
                                          flammable vapor.
Polymeric beads, expandable      UN2211  Sulfur..............     NA1350
 evolving flammable vapor.
Sulfur......................     UN1350
------------------------------------------------------------------------

    We also propose to assign stowage code 25 to every Class 1
explosive table entry to indicate these materials must be protected
from sources of heat in accordance with the new proposed definition of
``protected from sources of heat'' in Sec.  176.2. See Section 176.84
for a detailed discussion of our proposed revision to stowage code 25
and Sec.  176.2 for the proposed definition of ``protected from sources
of heat.''
    Stowage code 50 is currently not assigned to any HMT entries and is
being proposed for deletion in this NPRM.
    PHMSA proposes to revise stowage code 128 to account for a citation
change in the IMDG Code. The proposed new text of stowage code 128 is
``stow in accordance with the IMDG Code, Sub-section <IP_ADDRESS>.2
(incorporated by reference; see Sec.  171.7 of this subchapter).''
    PHMSA proposes to delete stowage codes 7E, 8E, and 20E. The
proposed reduction in the number of vessel stowage categories in column
(10A) makes these codes unnecessary and any applicable stowage
requirements are covered by the requirements of the applied code in
column (10A). Consequently, we propose to remove stowage codes 7E, 8E,
or 20E from the following entries, as applicable:
    The following proper shipping names and corresponding
identification numbers will have stowage code 7E removed from column
(10B) of the HMT.

------------------------------------------------------------------------
    Proper shipping name        UN No.   Proper shipping name    UN No.
------------------------------------------------------------------------
Ammunition, smoke with or        UN0303  Ammunition, tear-        UN0301
 without burster, expelling               producing with
 charge or propelling charge.             burster, expelling
                                          charge or
                                          propelling charge.
------------------------------------------------------------------------

    The following proper shipping names and corresponding
identification numbers will have stowage code 8E removed from column
(10B) of the HMT.

------------------------------------------------------------------------
    Proper shipping name        UN No.   Proper shipping name    UN No.
------------------------------------------------------------------------
Ammunition smoke, white          UN0245  Articles, explosive,     UN0354
 phosphorus with burster,                 n.o.s.
 expelling charge, or
 propelling charge.
Ammunition, smoke, white         UN0246  Articles, explosive,     UN0355
 phosphorus with burster,                 n.o.s.
 expelling charge, or
 propelling charge.
Ammunition, smoke with or        UN0015  Articles, explosive,     UN0356
 without burster, expelling               n.o.s.
 charge or propelling charge.
Ammunition, smoke with or        UN0016  Articles, pyrophoric     UN0380
 without burster, expelling
 charge or propelling charge.
Ammunition, smoke with or        UN0303  Contrivances, water-     UN0248
 without burster, expelling               activated, with
 charge or propelling charge.             burster, expelling
                                          charge or
                                          propelling charge.
Ammunition, tear-producing       UN0018  Contrivances, water-     UN0249
 with burster, expelling                  activated, with
 charge or propelling charge.             burster, expelling
                                          charge or
                                          propelling charge.
Ammunition, tear-producing       UN0019  Rocket motors with       UN0250
 with burster, expelling                  hypergolic liquids
 charge or propelling charge.             with or without an
                                          expelling charge.
Ammunition, tear-producing       UN0301  Rocket motors with       UN0322
 with burster, expelling                  hypergolic liquids
 charge or propelling charge.             with or without an
                                          expelling charge.
Ammunition, toxic with           UN0020  Substances,              UN0357
 burster, expelling charge,               explosive, n.o.s.
 or propelling charge.
Ammunition, toxic with           UN0021  Substances,              UN0358
 burster, expelling charge,               explosive, n.o.s.
 or propelling charge.
                                         Substances,              UN0359
                                          explosive, n.o.s.
------------------------------------------------------------------------

    The following proper shipping names and corresponding
identification numbers will have stowage code 20E removed from column
(10B) of the HMT.

------------------------------------------------------------------------