28AFMAN 24-204(I)/TM 38-250/NAVSUP PUB 505/MCO P4030.19H/ DLAI 4145.311 DECEMBER 2001Polymerizable Material--Any material that may polymerize (combine or react with itself) with an evolution of adangerous 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 cylinderwall. 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 thatrepresents the force exerted within the container or cylinder. Gauge pressure is always that pressure aboveatmospheric pressure.HPurged--As it relates to this manual, purged means void of hazardous material. Removal of liquid hazardousmaterial by physical, chemical, or mechanical means as directed by a technical publication or directive. In theabsence of a specific technical procedure, it is the shipper’s determination based on the specific knowledge of theitem 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 ignitionsource, can ignite within five minutes of coming in contact with air. This material is the most likely tospontaneously combust.Radiation Level--The radiation dose-equivalent rate expressed in millisievert per hour or mSv/h (millirem per houror 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 similarinstrument or article having radioactive material as a component part.Radioactive Contents--The radioactive material, together with any contaminated liquids or gases, within thepackage.Radioactive Material--Any material having a specific activity greater than 70 Bq per gram (0.002 microcuries pergram) (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 refrigerantgases, dispersant gases (fluorocarbons), or mixtures listed in table A4.1; or any other compressed gas meeting one ofthe following conditions: -A nonflammable mixture containing not less than 50 percent fluorocarbon content, having a vapor pressurenot 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 byweight 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 requiresnotification 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 maximumextent 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 isconsidered the primary hazard.
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