RID - European regulatory body that regulates rail shipments of dangerous goods in Europe.
Salvage Drum - A drum with a removable metal head that is compatible with the material and is used to
transport damaged or leaking hazardous materials or hazardous waste for repackaging or disposal.
SEAVAN - Commercial or Government-owned (or leased) shipping container.
Shipping Paper - A shipping order, bill of lading, manifest or other shipping document serving a similar
purpose and containing the information required by Title 49 CFR 172.202, 172.203, and 172.204.
Single Packaging - A non-bulk packaging other than a combination packaging.
Solid - A material which has a vertical flow of two inches (50mm) or less within a three-minute period,
or a separation of less than one gram of liquid when determined in accordance with the procedures
specified in ASTMD 4359, "Standard Test Method for Determining Whether a Material is a Liquid or
Solid."
State - 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.
Stowage - The act of placing hazardous materials on board a vessel.
Subsidiary Hazard - A hazard of a material other than the primary hazard.
Tactical - A tactical operation is the movement of personnel, equipment and supplies of an organization
so they can accomplish their immediate military combat objective.
Technical Name - A recognized chemical name or microbiological name currently used in scientific and
technical handbooks, journals, and texts. Generic descriptions are authorized provided they readily
identify the general chemical or microbiological group.
Threshold Limit Value (TLV) - A registered trademark of the American Conference of Governmental
Industrial Hygienists (ACGIH). ACGIH presents the most recent TLVs for commonly used industrial
chemical compounds. The Threshold Limit Value-Time Weighted Average (TLV-TWA) is the time
weighted average concentration for a normal 8-hour workday and 40-hour workweek to which nearly all
workers may be repeatedly exposed, day after day, without adverse effect. Threshold Limit Value-Short
Term Exposure Limit (TLV-STEL, 15 minutes) is the concentration to which workers can be exposed
continuously for a short period of time without suffering from (1) irritation; (2) chronic or irreversible
tissue damage; or (3) narcosis of sufficient degree to increase the likelihood of accidental injury, impair
self-rescue, or materially reduce work efficiency, provided that the daily TLV-TWA is not exceeded.
This is not a separate independent exposure limit but, rather, supplements the time recognized acute
effects from a substance whose toxic effects are primarily of a chronic nature. STELs are recommended
only where toxic effects have been reported from high short-term exposures in either humans or animals.
H-17
