Air-Eligible Packaging Requirements

34 AFMAN 24-204(I)/TM 38-250/NAVSUP PUB 505/MCO P4030.19H/ DLAI 4145.3 11 DECEMBER 2001 - A single or composite packaging which is tested and marked for PG I liquid hazardous materials may be filled with: - A PG II solid hazardous material to a gross mass, in kilograms, not exceeding the rated capacity of the packaging in liters, multiplied by 1.5, multiplied by the specific gravity marked on the packaging, or 1.2 if not marked; or - A PG III solid hazardous material to a gross mass, in kilograms, not exceeding the rated capacity of the packaging in liters, multiplied by 2.25, multiplied by the specific gravity marked on the packaging, or 1.2 if not marked. - A single or composite packaging which is tested and marked for PG II liquid hazardous materials may be filled with a PG III solid hazardous material to a gross mass, in kilograms, not exceeding the rated capacity of the packaging in liters, multiplied by 1.5, multiplied by the specific gravity marked on the packaging, or 1.2 if not marked. A3.2. Air-Eligible Packaging Requirements. A3.2.1. Combination Packaging Pressure Standard. Inner receptacles (including closures) used to retain a hazardous liquid or semi-solid in a combination packaging must be capable of withstanding (without leaking) an internal air gauge pressure of not less than 95 kilopascal (kPa) (14 psi); or 75 kPa (11 psi) for PG III liquids in Class 3 or Class 6.1 and Consumer Commodities; or a pressure related to the vapor pressure of the liquid contained in the receptacle, whichever is greater. This standard may be determined through actual test data or the shipper’s evaluation and transportation experience. Repack or overpack liquid hazardous materials in containers that do not meet the internal hydraulic pressure standard, into United Nations (UN) certified specification containers that meet this requirement. Determine the pressure related to the vapor pressure of the liquid by one of the following methods: - The total gauge pressure measured in the receptacle (that is, the vapor pressure of the liquid and the partial pressure of the air, or other inert gases, less 100 kPa (15 psi) at 55 degrees C (131 degrees F), multiplied by a safety factor of 1.5. The total gauge pressure is determined on the basis of a filling temperature of 15 degrees C (59 degrees F) and a degree of filling such that the receptacle is not liquid full at a temperature of 55 degrees C (131 degrees F). - times the vapor pressure at 50 degrees C (122 degrees F) less 100 kPa (15 psi ). - times the vapor pressure at 55 degrees C (131 degrees F) less 100 kPa (15 psi). HA3.2.2. Single and Composite Packaging Pressure Requirement. Single packagings containing liquid hazardous material must meet the hydraulic pressure test requirements of 49 CFR 178.605. A test pressure of not less than 250 kPa (36 psi) for liquids of PG I; 80 kPa (12 psi) for PG III liquids in Class 3 or Class 6.1; and 100 kPa (15 psi) for all other liquids is required. If shipping liquid hazardous materials in containers that do not meet the internal hydraulic pressure requirement, repack or overpack into UN specification certified containers that do meet the requirement. A3.2.3. Overpacking Containers. Pack containers holding liquids that do not meet the pressure requirement for air transport into an outer container that does meet the requirement. Separate interior containers by absorbent cushioning material as required by attachment 20. Do not overpack pressurized containers in sealed metal drums. See Figure A17.1 for certification instructions. A3.3. General Requirements Applicable to Hazard Class. In addition to A3.1 and A3.2, the following general requirements apply to each hazard class: A3.3.1. Class 1. A3.3.1.1. Forbidden Explosives. Do not offer explosives listed below for air shipment: - An explosive that has not been approved according to A3.3.1.2. - Bulk fulminates or other detonating compounds in dry condition. - Explosive compounds that ignite spontaneously or undergo marked decomposition when subjected to a temperature of 75 degrees C (167 degrees F) for 48 hours. - An explosive mixture or device containing a chlorate and also containing: - An ammonium salt including a substituted ammonium or quaternary ammonium salt. - An acidic substance including a salt of a weak base and a strong acid. - Leaking, dropped, or otherwise damaged explosives and ammunition.