AFMAN 24-204(I)/TM 38-250/NAVSUP PUB 505/MCO P4030.19H/ DLAI 4145.3
11 DECEMBER 2001
Polymerizable Material--Any material that may polymerize (combine or react with itself) with an evolution of a
dangerous quantity of heat or gas.
Pounds Per Square Inch (PSI)--The amount of force exerted on one square inch of the container or cylinder wall.
Pounds Per Square Inch Absolute (PSIA)--The absolute value of the force exerted on the container or cylinder
wall. Absolute pressure is atmospheric pressure plus gauge pressure.
Pounds Per Square Inch Gauge (PSIG)--The gauge pressure is the pressure taken by a pressure gauge that
represents the force exerted within the container or cylinder. Gauge pressure is always that pressure above
HPurged--As it relates to this manual, purged means void of hazardous material. Removal of liquid hazardous
material by physical, chemical, or mechanical means as directed by a technical publication or directive. In the
absence of a specific technical procedure, it is the shippers determination based on the specific knowledge of the
item to decide the appropriate preparation to ensure the item is void of hazardous material.
Primary Hazard--The hazard class of the material as assigned by table A4.1.
Pyrophoric Material--This material is a liquid or solid that, even in small quantities and without an external ignition
source, can ignite within five minutes of coming in contact with air. This material is the most likely to
Radiation Level--The radiation dose-equivalent rate expressed in millisievert per hour or mSv/h (millirem per hour
or mrem/h). Neutron flux densities may be converted into radiation levels according to 49 CFR 173.403 (v).
Radioactive Article--Any manufactured instrument or article such as clock, electronic tube or apparatus, or a similar
instrument or article having radioactive material as a component part.
Radioactive Contents--The radioactive material, together with any contaminated liquids or gases, within the
Radioactive Material--Any material having a specific activity greater than 70 Bq per gram (0.002 microcuries per
gram) (uCi/g)(see definition of "specific activity").
Receptacle--A containment vessel for receiving and holding materials, including any means of closing.
Refrigerant Gas (Dispersant Gas)--This term applies to all flammable, nonflammable, nonpoisonous refrigerant
gases, dispersant gases (fluorocarbons), or mixtures listed in table A4.1; or any other compressed gas meeting one of
the following conditions:
A nonflammable mixture containing not less than 50 percent fluorocarbon content, having a vapor pressure
not over 1792 kPa (260 psig) at 54 degrees C (130 degrees F).
A flammable mixture containing not less than 50 percent fluorocarbon content, not over 40 percent by
weight of a flammable component, having a vapor pressure not over 1792 kPa (260 psig) at 54 degrees C
(130 degrees F).
Reportable Quantity--The quantity of material, as set forth in 40 CFR 302.4, the release of which requires
notification pursuant to 40 CFR Part 302. See also Hazardous Substance.
Residue--The hazardous material remaining in a packaging after its contents have been removed to the maximum
extent possible and before the packaging has been purged to remove any hazardous vapors.
Secondary Hazard--A distinct and separate hazardous item that is a component part of a larger item that is
considered the primary hazard.