USPS Updates Hazmat Packaging Rules in Publication 52
At that time, PHMSA revised the HMR to incorporate international standards for small and excepted quantities shipped by air or vessel at 49 CFR 173.4. In doing so, PHMSA also clarified that the Small Quantity regulations apply only to hazmat shipments transported by highway or rail.
While the rules for shipping hazardous materials by mail are more stringent than the Hazardous Materials Regulations for commercial shippers, today’s update revises the USPS Small Quantity Provision to make it applicable only to surface mail products—matching what PHMSA did 7 years ago.
Excepted Hazmat Quantities and the “E” Marking
In addition, USPS is adding an Excepted Quantity Provision to Publication 52 to require the use of the DOT-approved “E” marking on hazardous materials packages mailed under the Excepted Quantity rules.
Not all hazardous materials are eligible for relief under the USPS Excepted Quantity rules. USPS prohibits Hazard Classes 1, 2, 4, and 7 from being shipped under these provisions.
Read the full notice in the Federal Register here.
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