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Definitions, as published

The definition of each term exactly as its official source words it, with the article or page it comes from.

1,785 records · page 25 of 36

Term slugDefinition textCitation
single-packaging means a non-bulk packaging other than a combination packaging. 49 CFR 171.8
solid means a material which is not a gas or a liquid. 49 CFR 171.8
solution means any homogeneous liquid mixture of two or more chemical compounds or elements that will not undergo any segregation under conditions normal to transportation. 49 CFR 171.8
special-permit means a document issued by the Associate Administrator, the Associate Administrator's designee, or as otherwise prescribed in the HMR, under the authority of 49 U.S.C. 5117 permitting a person to perform a function that is not otherwise permitted under subchapter A or C of this chapter, or other regulations issued under 49 U.S.C. 5101 et seq. (e.g., Federal Motor Carrier Safety routing requirements). 49 CFR 171.8
specification-packaging means a packaging conforming to one of the specifications or standards for packagings in part 178 or part 179 of this subchapter. 49 CFR 171.8
spontaneously-combustible-material See § 173.124(b) of this subchapter. 49 CFR 171.8
stabilized means that the hazardous material is in a condition that precludes uncontrolled reaction. This may be achieved by methods such as adding an inhibiting chemical, degassing the hazardous material to remove dissolved oxygen and inerting the air space in the package, or maintaining the hazardous material under temperature control. 49 CFR 171.8
state means a State of the United States, the District of Columbia, the Commonwealth of Puerto Rico, the Commonwealth of the Northern Mariana Islands, the Virgin Islands, American Samoa, Guam, or any other territory or possession of the United States designated by the Secretary. 49 CFR 171.8
state-designated-route means a preferred route selected in accordance with U.S. DOT “Guidelines for Selecting Preferred Highway Routes for Highway Route Controlled Quantities of Radioactive Materials” or an equivalent routing analysis which adequately considers overall risk to the public. 49 CFR 171.8
storage-incidental-to-movement means storage of a transport vehicle, freight container, or package containing a hazardous material by any person between the time that a carrier takes physical possession of the hazardous material for the purpose of transporting it in commerce until the package containing the hazardous material is physically delivered to the destination indicated on a shipping document, package marking, or other medium, or, in the case of a private motor carrier, between the time that a motor vehicle driver takes physical possession of the hazardous material for the purpose of transporting it in commerce until the driver relinquishes possession of the package at its destination and is no longer responsible for performing functions subject to the HMR with respect to that particular package. 49 CFR 171.8
storage-incidental-to-movement includes— (i) Storage at the destination shown on a shipping document, including storage at a transloading facility, provided the shipping documentation identifies the shipment as a through-shipment and identifies the final destination or destinations of the hazardous material; and (ii) Rail cars containing hazardous materials that are stored on track that does not meet the definition of “private track or siding” in § 171.8, even if those cars have been delivered to the destination shown on the shipping document. (2) Storage incidental to movement does not include storage of a hazardous material at its final destination as shown on a shipping document. 49 CFR 171.8
stowage means the act of placing hazardous materials on board a vessel. 49 CFR 171.8
strong-outer-packaging means the outermost enclosure that provides protection against the unintentional release of its contents. It is a packaging that is sturdy, durable, and constructed so that it will retain its contents under normal conditions of transportation. In addition, a strong outer packaging must meet the general packaging requirements of subpart B of part 173 of this subchapter but need not comply with the specification packaging requirements in part 178 of the subchapter. For transport by aircraft, a strong outer packaging is subject to § 173.27 of this subchapter. The terms “strong outside container” and “strong outside packaging” are synonymous with “strong outer packaging.” 49 CFR 171.8
subsidiary-hazard means a hazard of a material other than the primary hazard. (See primary hazard). 49 CFR 171.8
table-in-172-101-or-172-101-table means the Hazardous Materials Table in § 172.101 of this subchapter. 49 CFR 171.8
technical-name means a recognized chemical name or microbiological name currently used in scientific and technical handbooks, journals, and texts. Generic descriptions are authorized for use as technical names provided they readily identify the general chemical group, or microbiological group. Examples of acceptable generic chemical descriptions are organic phosphate compounds, petroleum aliphatic hydrocarbons and tertiary amines. For proficiency testing only, generic microbiological descriptions such as bacteria, mycobacteria, fungus, and viral samples may be used. Except for names which appear in subpart B of part 172 of this subchapter, trade names may not be used as technical names. 49 CFR 171.8
tofc means trailer-on-flat-car. 49 CFR 171.8
top-shell means the tank car tank surface, excluding the head ends and bottom shell of the tank car tank. 49 CFR 171.8
toxin See § 173.134 of this subchapter. 49 CFR 171.8
trailership means a vessel, other than a carfloat, specifically equipped to carry motor transport vehicles and fitted with installed securing devices to tie down each vehicle. The term trailership includes Roll-on/Roll-off (RO/RO) vessels. 49 CFR 171.8
train means one or more engines coupled with one or more rail cars, except during switching operations or where the operation is that of classifying and assembling rail cars within a railroad yard for the purpose of making or breaking up trains. 49 CFR 171.8
train-consist-information means a hard (printed) copy or electronic record of the position and contents of each hazardous material rail car where the record includes the information required by § 174.26 of this subchapter. 49 CFR 171.8
trainship means a vessel other than a rail car ferry or carfloat, specifically equipped to transport railroad vehicles, and fitted with installed securing devices to tie down each vehicle. 49 CFR 171.8
transloading means the transfer of a hazardous material by any person from one bulk packaging to another bulk packaging, from a bulk packaging to a non-bulk packaging, or from a non-bulk packaging to a bulk packaging for the purpose of continuing the movement of the hazardous material in commerce. 49 CFR 171.8
transport-vehicle means a cargo-carrying vehicle such as an automobile, van, tractor, truck, semitrailer, tank car or rail car used for the transportation of cargo by any mode. Each cargo-carrying body (trailer, rail car, etc.) is a separate transport vehicle. 49 CFR 171.8
transportation-or-transport means the movement of property and loading, unloading, or storage incidental to that movement. 49 CFR 171.8
ufc means Uniform Freight Classification. 49 CFR 171.8
un means United Nations. 49 CFR 171.8
un-cylinder means a transportable pressure receptacle with a water capacity not exceeding 150 L that has been marked and certified as conforming to the applicable requirements in part 178 of this subchapter. 49 CFR 171.8
un-portable-tank means an intermodal tank having a capacity of more than 450 liters (118.9 gallons). It includes a shell fitted with service equipment and structural equipment, including stabilizing members external to the shell and skids, mountings or accessories to facilitate mechanical handling. A UN portable tank must be capable of being filled and discharged without the removal of its structural equipment and must be capable of being lifted when full. Cargo tanks, rail tank car tanks, non-metallic tanks, non-specification tanks, bulk bins, and IBCs and packagings made to cylinder specifications are not UN portable tanks. 49 CFR 171.8
un-pressure-drum means a welded transportable pressure receptacle of a water capacity exceeding 150 L (39.6 gallons) and not more than 1,000 L (264.2 gallons) (e.g. cylindrical receptacles equipped with rolling hoops, spheres on skids). 49 CFR 171.8
un-pressure-receptacle means a UN cylinder, drum, or tube. 49 CFR 171.8
un-recommendations means the UN Recommendations on the Transport of Dangerous Goods (IBR, see § 171.7). 49 CFR 171.8
un-standard-packaging means a packaging conforming to standards in the UN Recommendations (IBR, see § 171.7). 49 CFR 171.8
un-tube means a transportable pressure receptacle of seamless or composite construction having with a water capacity exceeding 150 L (39.6 gallons) but not more than 3,000 L (792.5 gallons) that has been marked and certified as conforming to the requirements in part 178 of this subchapter. 49 CFR 171.8
undeclared-hazardous-material means a hazardous material that is: (1) Subject to any of the hazard communication requirements in subparts C (Shipping Papers), D (Marking), E (Labeling), and F (Placarding) of part 172 of this subchapter, or an alternative marking requirement in part 173 of this subchapter (such as §§ 173.4(a)(10) and 173.6(c)); and (2) offered for transportation in commerce without any visible indication to the person accepting the hazardous material for transportation that a hazardous material is present, on either an accompanying shipping document, or the outside of a transport vehicle, freight container, or package. 49 CFR 171.8
unintentional-release means the escape of a hazardous material from a package on an occasion not anticipated or planned. This includes releases resulting from collision, package failures, human error, criminal activity, negligence, improper packing, or unusual conditions such as the operation of pressure relief devices as a result of over-pressurization, overfill or fire exposure. It does not include releases, such as venting of packages, where allowed, and the operational discharge of contents from packages. 49 CFR 171.8
unit-load-device means any type of freight container, aircraft container, aircraft pallet with a net, or aircraft pallet with a net over an igloo. 49 CFR 171.8
united-states means a State of the United States, the District of Columbia, the Commonwealth of Puerto Rico, the Commonwealth of the Northern Mariana Islands, the Virgin Islands, American Samoa, Guam, or any other territory or possession of the United States designated by the Secretary. 49 CFR 171.8
unloading-incidental-to-movement means removing a packaged or containerized hazardous material from a transport vehicle, aircraft, or vessel, or for a bulk packaging, emptying a hazardous material from the bulk packaging after the hazardous material has been delivered to the consignee when performed by carrier personnel or in the presence of carrier personnel or, in the case of a private motor carrier, while the driver of the motor vehicle from which the hazardous material is being unloaded immediately after movement is completed is present during the unloading operation. (Emptying a hazardous material from a bulk packaging while the packaging is on board a vessel is subject to separate regulations as delegated by Department of Homeland Security Delegation No. 0170.1 at 2(103).) Unloading incidental to movement includes transloading. 49 CFR 171.8
vessel includes every description of watercraft, used or capable of being used as a means of transportation on the water. 49 CFR 171.8
viscous-liquid means a liquid material which has a measured viscosity in excess of 2500 centistokes at 25 °C. (77 °F.) when determined in accordance with the procedures specified in ASTM Method D 445-72 “Kinematic Viscosity of Transparent and Opaque Liquids (and the Calculation of Dynamic Viscosity)” or ASTM Method D 1200-70 “Viscosity of Paints, Varnishes, and Lacquers by Ford Viscosity Cup.” 49 CFR 171.8
volatility refers to the relative rate of evaporation of materials to assume the vapor state. 49 CFR 171.8
waste-material means, for the purposes of lab pack requirements in § 173.12 of this subchapter, all hazardous materials which are destined for disposal or recovery, and not so limited to only those defined as a hazardous waste in this section. 49 CFR 171.8
water-reactive-material See § 173.124(c) of this subchapter. 49 CFR 171.8
water-resistant means having a degree of resistance to permeability by and damage caused by water in liquid form. 49 CFR 171.8
watt-hour means a unit of energy equivalent to one watt (1 W) of work acting for one hour (1 h) of time. The Watt-hour rating of a lithium ion cell or battery is determined by multiplying the rated capacity of a cell or battery in ampere-hours, by its nominal voltage. Therefore, Watt-hour (Wh) = ampere-hour (Ah) × volts (V). 49 CFR 171.8
wooden-barrel means a packaging made of natural wood, of round cross-section, having convex walls, consisting of staves and heads and fitted with hoops. 49 CFR 171.8
working-pressure for purposes of UN pressure receptacles, means the settled pressure of a compressed gas at a reference temperature of 15 °C (59 °F). 49 CFR 171.8
w-t means watertight. 49 CFR 171.8

Sources

1,049 further records are on file but not shown, because the publisher's terms do not clearly allow them to be republished.