The Department of Transportation’s Pipeline and Hazardous Materials Safety Administration has issued a final rule that, effective July 5, will make miscellaneous amendments to the Hazardous Materials Regulations to update and clarify certain regulatory requirements. These amendments include removing the packing group II designation for certain organic peroxides, self-reactive substances and explosives; incorporating requirements for trailers of manifolded acetylene cylinders; providing requirements to allow for shipments of damaged wet electric batteries; and revising the requirements for the packaging of nitric acid, testing of pressure relief devices on cargo tanks, and shipments of black or smokeless powder for small arms. PHMSA states that these changes are designed to promote safer transportation practices, address petitions for rulemaking, respond to National Transportation Safety Board safety recommendations, facilitate international commerce, make editorial corrections and simplify the regulations.


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