AAR
Association of American Railroads
[more]Actuator
A device designed to shut off gas flow upon flame failure, pilot outage, control impulse, overpressure, or underpressure without a person being physically at the location. Valve actuators on mainline transmission systems are primarily operated by pushing a button at a control station.
[more]Anodeless riser
A steel casing with a plastic pipe inside. The plastic pipe inside the steel casing is the service line carrying gas to the customer meter.
[more]ASNDT
American Society for Non-destructive Testing
[more]BTS
Bureau of Transportation Statistics
[more]Bulk Packaging
A packaging (transport vehicle or freight container) in which
hazardous materials are loaded with no intermediate form of
containment, when the internal volume is greater than:
[more]Capital Improvement
An expenditure for a physical improvement to an existing capital asset such as additions and major alterations that are intended to improve performance or increase useful life.
[more]Cargo
Product, including its packaging.
[more]Cargo Tank
A bulk packaging that is loaded or unloaded without being
removed from the motor vehicle. (The tank may or may not be
permanently attached to the motor vehicle).
[more]CFR
Code of Federal Regulations
[more]Chart 11
DOT’s Hazardous Materials Marking, Labeling and
Placarding Guide.
[more]Compatibility
Relates to possible interactions between a material and
(1) its container, or
(2) other products that may be loaded or transported together.
[more]Compound
Two or more ingredients that are chemically united.
[more]Compressed Gas
Material or mixture meeting criteria in § 173.115(b), (absolute
pressure of 280 kPa [41 psia]) at 20°C [68° F] or greater).
[more]Consist
Sequentially lists the location of each rail car in a train. May
serve as the shipping paper if the consist has all the information
required by the USDOT.
[more]CSA
Canadian Standards Association
[more]Dangerous Goods
International term for hazardous materials.
[more]DMS
Docket Management System (historical system used by DOT prior to the Federal Docket Management System (FDMS)).
[more]Documentation
Completed forms required to accompany hazardous materials.
For example, shipping papers, certificates, emergency response
information, or manifests.
[more]DOT
U.S. Department of Transportation
[more]Emergency Response Information
Information that can be used in the mitigation of an incident
involving hazardous materials.
[more]Etiologic Agent
See Infectious Substance.
[more]ETN
Midwest Energy Association (MEA)/Energy Training Network (ETN)
[more]Exceptions
Relief from certain HM regulations; applies to everyone.
[more]Exemptions
Specific USDOT-written relief from certain HM Regulations, for
shippers, carriers, or manufacturers; 2 year limit but may be
renewed. (Part 107, Subpart B of 49 CFR)
[more]FDMS
Federal Docket Management System. This system houses current dockets.
[more]FERC
Federal Energy Regulatory Commission
[more]Flash Point
The minimum temperature at which a substance gives off
flammable vapor(s). Substance will ignite when coming in
contact with a spark or flame.
[more]FOIA
Freedom of Information Act
[more]Forbidden
A material that is prohibited from being offered or accepted
for transportation. This prohibition does not apply if these
materials are:
[more]FR
Used as both Federal Register and Final Rule
[more]FTE
GAO
General Accountability Office (formerly General Accounting Office)
[more]Generator
An EPA term used for a hazardous waste producer and/or
shipper.
[more]GPO
Government Printing Office
[more]Grants
Planning and training grants to deal with hazardous materials
emergencies.
[more]Gross Weight
Total weight of packaging, including its contents.
[more]Hazard Class
A group of hazardous materials that share dangerous
characteristics. The USDOT has identified nine hazard classes
based on the dangers posed in transportation.
[more]Hazard Division
A means of sub-dividing similar hazardous materials which
require different hazard communications.
[more]Hazardous Material
A substance or material capable of posing an unreasonable risk
to health, safety, or property when transported in commerce.
[more]Hazardous Substance
A material listed in Appendix A to § 172.101 and the quantity in
one package equals or exceeds the reportable quantity (RQ).
Material may be in solution or mixture. This definition does not
apply to petroleum (lubricants or fuel) products.
[more]Hazardous Waste
Any material that is subject to the Hazardous Waste Manifest requirements of the EPA. Refer to 40 CFR Part 262.
[more]Hazardous Waste Manifest
A specific shipping document required by the USDOT and the EPA for hazardous waste shipments. Also referred to as the Uniform Hazardous Waste Manifest (UHWM).
If all USDOT requirements [i.e., the basic description (proper shipping name, hazard class/division, ID No., and packing group) are entered on the UHWM, the manifest may be used as a shipping paper. (49 CFR § 172.205)
[more]Hazmat Employee
A person who is employed by a hazardous materials employer and directly affects hazardous materials (hazmat) transportation safety.
[more]Hazmat Employer
A person who uses one or more of its employees in connection with:
[more]Identification Number (ID No.)
The UN or NA “four-digit number” assigned to hazardous materials, i.e., UN 1203. ID numbers are listed in Col. 4 of the HMT. Used for identification and emergency response.
[more]IG
Office of the Inspector General (also referred to as "OIG"), commonly the office of any Agency which performs these duties. In most documents presented here, assume the Department of Transportation OIG unless otherwise stated.
[more]In-association-with
Refers to the placement of required additional entries on the shipping paper. Usually placed after the complete description for a hazardous material. May be any format, as long as it is clearly part of the entry.
[more]Incident
Unintentional release of hazardous material(s).
[more]Infectious Substance
Living microorganism or its toxin which may cause severe, disabling or fatal disease. Term synonymous with Etiologic Agent. (49 CFR, § 173.134)
[more]Irritating Material
A liquid or solid substance. Upon contact with fire or air, the material gives off dangerous or intensely irritating fumes.
[more]ISO
International Standards Organization
[more]Labels
Hazard class identifiers required on hazardous materials packaging; 100 mm diamond shaped (square-on-point); identify hazard class by symbol, color and sometimes, by name.
[more]Limited Quantity (Ltd. Qty.)
The amount of material for which there is a specific labeling or packaging exception.
[more]Marine Pollutant
Hazardous material which is:
[more]Markings
Information required to be placed on the outside of the shipping
container; may include one or more of the following:
[more]MEA
Midwest Energy Association (MEA)/Energy Training Network (ETN)
[more]Mitigate
Measures to prevent, or lessen the results of
a release of hazardous materials.
[more]Mixture
A material composed of one or more compounds.
[more]NACE
National Association of Corrosion Engineers
[more]NARUC
National Association of Regulatory Utility Commissioners
[more]NCCER
National Center for Construction Education and Research
[more]NFPA
National Fire Protection Association
[more]NIST
National Institute of Standards and Technology
[more]NOI
NPRM
Notice of Proposed Rule Making
[more]NTSB
National Transportation Safety Board
[more]OFR
Office of the Federal Register
[more]OIG
Office of the Inspector General (also referred to as "IG"), commonly the office of any Agency which performs these duties. In most documents presented here, assume the Department of Transportation OIG unless otherwise stated.
[more]OMB
Office of Management and Budget
[more]OSHA (Act)
Occupational Safety and Health Act
[more]OSHA (Administration)
Occupational Safety and Health Administration
[more]P.L.
RITA
Research and Innovative Technology Administration (of the U.S. Department of Transportation)
[more]SNPRM
Supplemental Notice of Proposed Rulemaking
[more]Training (Hazmat)
A systematic program (i.e., consistent approach, testing, and documentation) that ensures that a hazardous materials (hazmat) employee has knowledge of hazardous materials and the Hazardous Materials Regulations (HMR), and can perform assigned hazmat functions properly. Refer to § 172.700(b) through § 172.704 of the regulations.
[more]TSI
Transportation Safety Institute
[more]U.S.C.
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