• The HMR outlines specifics for non-bulk packaging designs used to transport hazardous materials.

The following design requirements apply to non-bulk packages, except as provided for liquid hazardous materials in non-bulk packagings, as detailed in Section 172.312.

• Inner packaging closures - A combination packaging containing liquid hazardous materials must be packed so that closures on inner packagings are upright.
• Friction - The nature and thickness of the outer packaging must be such that friction during transportation is not likely to generate an amount of heat sufficient to dangerously alter the chemical stability of the contents.
• Securing and cushioning inner packagings - Inner packagings of combination packagings must be packed, secured, and cushioned to prevent their breakage or leakage and to control their shifting within the outer packaging under conditions normally incident to transportation. Cushioning material must not be capable of reacting dangerously with the contents of the inner packagings or having its protective properties significantly weakened in the event of leakage.
• Metallic devices - Nails, staples, and other metallic devices shall not protrude into the interior of the outer packaging in such a manner as to be likely to damage inner packagings or receptacles.
• Vibration - Each non-bulk package must be capable of withstanding, without rupture or leakage, the vibration test procedure specified in Section 178.608 of the Hazardous Materials Regulations (HMR).