AFMAN 24-204(I)/TM 38-250/NAVSUP PUB 505/MCO P4030.19H/ DLAI 4145.335511 DECEMBER 2001Attachment 20ABSORBENT CUSHIONING REQUIREMENTSA20.1.Absorbent Material General Requirements.For combination packagings, use cushioning materialssuitable for the absorption of liquid hazardous materials in the event of leakage from the primary receptacle. Ensurecushioning materials used are satisfactory in all respects. Ensure the material is not capable of reacting adverselywith the contents of the package and is noncombustible. Do not use asbestos. The following requirements apply tothe use of absorbent cushioning material for combination packagings:-Use absorbent cushioning material to package liquids in PG I and II.-Each package containing a liquid in PG I must include sufficient cushioning material to absorb theentire contents of the inner containers.-Each package containing a liquid in PG II must include sufficient cushioning material to absorb thecontents of any one inner container. If the inner containers vary in size, include sufficient cushioningmaterial to absorb the contents of the inner receptacle containing the greatest quantity of liquid.- Absorbent cushioning material is not required for:- Paint in PG II- Liquids in PG III- Consumer Commodities (if inner receptacles are other than glass or earthenware)-When overpacking containers of liquids that do not meet pressure requirements into containers that meetthe pressure requirement, use absorbent cushioning material as stipulated above.-When absorbent cushioning material is required and the outer packaging is not liquid-tight, use a means ofcontaining the liquid in the event of leakage. This may take the form of a leak-proof liner, plastic bag, orother equally efficient means of containment. When securely closed polyethylene (4-mil minimum) bagsare used to contain the cushioning and hazardous liquid, the bags must be of sufficient size to form a linerfor the exterior container, or a bag for the interior container.-When overpacking individual packagings that already meet air-eligibility requirements use enoughcushioning material to secure and position the packagings against damage. The cushioning material,absorbent or nonabsorbent, must completely fill any void space in the container.-Absorbent cushioning material is not required for containers that have met the UN packaging specificationtest requirements (including the hydrostatic pressure test) as a single packaging.A20.2. Determining the Amount Required. Use table A20.1 as a guide to determine the amount of vermiculite ordiatomaceous earth required for overpacking and cushioning liquid hazardous materials. Other equivalentcushioning materials may be used to meet A20.1 requirements.-The amounts identified in table A20.1 are the minimum requirements. When exact quantities of cushioningmaterials are not found in table A20.1, make an approximation based on quantities listed.-When placing cushioning materials into the container, consider settling of the cushioning materials duringtransportation. Use enough cushioning material to compensate for any settling that may occur.-When the applicable test report identifies an amount larger than table A20.1, use the amount identified inthe test report.
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