AFMAN 24-204(I)/TM 38-250/NAVSUP PUB 505/MCO P4030.19H/ DLAI 4145.3
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11 DECEMBER 2001
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1A1 and 1N1 drums with a capacity of less than or equal to 120 L (32 gallons) must have a minimum
thickness of 1.3 mm (0.051 inches). 1B1 drums with a capacity of less than or equal to 120 L (32
gallons) must have a minimum thickness of 3.9 mm (0.154 inches).
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1A1 and 1N1 drums with a capacity greater than 120 L (32 gallons) must have a minimum thickness of
1.7 mm (0.067 inches). 1B1 drums with a capacity greater than 120 L (32 gallons) must have a
minimum thickness of 4.7 mm (0.185 inches).
A7.6.2.1. Cushion the inner drum within the outer drum with a shock-mitigating, non-reactive material. There must
be a minimum of 5.0 cm (2 inches) of cushioning material between the outer surface (side) of the inner drum and the
inner surface (side) of the outer drum. There must also be at least 7.6 cm (3 inches) of cushioning material between
the outer surface (top and bottom) of the inner drum and the inner surface (top and bottom) of the outer drum.
A7.6.3. Pack in an inner packaging system that consists of an impact-resistant receptacle of glass, earthenware,
plastic, or metal securely cushioned with a non reactive absorbent material. The package must be packed within a
leak-tight packaging of metal or plastic, then packed in a steel drum (1A2), aluminum drum (1B2), metal drum
(other than steel or aluminum (1N2)), plywood drum (1D), fiber drum (1G), plastic drum (1H2), wooden barrel
(2C2), steel jerrican (3A2), plastic jerrican (3H2), steel box (4A), aluminum box (4B), natural wood box (4C1 or
4C2), plywood box (4D), reconstituted wood box (4F), fiberboard box (4G), expanded plastic box (4H1), or solid
plastic box (4H2). The capacity of the inner receptacle must not exceed 4 L (1 gallon). An inner receptacle that has
a closure must have a screw-type closure, which is held in place by any means capable of preventing backoff or
loosening of the closure by impact or vibration during transportation. Both the inner packaging system and the outer
container must each meet the test requirements of the PG I performance level independently. The total amount of
liquid that can be packed in the outer container must not exceed 16 L (4 gallons).
A7.6.4. This paragraph is only authorized for Crotonaldehyde, stabilized; Diketene, Stabilized; Dimethylhydrazine,
symmetrical; Isopropyl Cloroformate and Methyl Orthosilicate. Pack in metal drums (1A1, 1B1, or 1N1), or plastic
drum (1H1), then place in metal drums (1A2 or 1H2), or a plastic receptacle with outer steel drum (6HA1). Both the
inner and outer drum must be tested to the PG I performance level. The outer 1A2 drum must have a minimum
thickness of 1.35 mm (0.053 inches). The outer 1H2 drum must have a minimum thickness of 6.30 mm (0.248
inches). The capacity of the inner drum (1A1, 1B1, 1N1, or 1H1) must not exceed 220 L (58 gallons). The inner
drum must meet the following requirements:
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Satisfactorily withstand a leak-proof test (as outlined in 49 CFR, paragraph 178.604) using an internal air
pressure at 55 degrees C (131 degrees F) of at least twice the vapor pressure of the material to be packaged.
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Have screw-type closures that meet all the following requirements:
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Closed and tightened to a torque as prescribed by the closure manufacturer, using a device that is
capable of measuring torque.
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Physically held in place by any means capable of preventing backoff or loosening of the closure by impact
or vibration during transportation.
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Provided with a cap seal that is properly applied according to the cap seal manufacturer’s recommendations.
The cap seal must be capable of withstanding an internal pressure of at least 100 kPa (15 psi).
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Meet the following minimum thickness requirements:
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1A1 drums with a capacity of less than or equal to 30 L (7.9 gallons) must have a minimum thickness
of 0.69 mm (0.027 inches). 1B1 drums with a capacity of less than or equal to 30 L (7.9 gallons) must
have a minimum thickness of 2.79 mm (0.110 inches). 1H1 drums with a capacity of less than or equal
to 30 L (7.9 gallons) must have a minimum thickness of 1.14 mm (0.045 inches). 6HA1 drums with a
capacity of less than or equal to 30 L (7.9 gallons) must have a minimum thickness of 1.58 mm
(0.0625 inches) for the inner plastic drum and a minimum thickness of 0.96 mm (0.038 inches) for the
outer steel drum.
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1A1 drums with a capacity greater than 30 L (7.9 gallons) but less than or equal to 120 L (32 gallons)
must have a minimum thickness of 1.08 mm (0.043 inches). 1B1 drums with a capacity greater than
30 L (7.9 gallons) but less than or equal to 120 L (32 gallons) must have a minimum thickness of 3.9
mm (0.154 inches). 1H1 drums with a capacity greater than 30 L (7.9 gallons) but less than or equal to
120 L (32 gallons) must have a minimum thickness of 3.16 mm (0.125 inches). 6HA1 drums with a
capacity greater than 30 L (7.9 gallons) but less than or equal to 120 L (32 gallons) must have a
minimum thickness of 1.58 mm (0.0625 inches) for the inner plastic drum and a minimum thickness of
0.96 mm (0.038 inches) for the outer steel drum.
