On September 12, 2022 (87 FR 55743), the Pipeline and Hazardous Materials Safety Administration (PHMSA) published a proposed rule in the federal register amending the Hazardous Materials Regulations (HMR) in 49 CFR Parts 171 - 180 to maintain alignment with international regulations and standards governing the transportation of Class 7 radioactive materials. Specifically, PHMSA proposes to adopt changes contained in the International Atomic Energy Agency (IAEA) standards. Additionally, PHMSA proposes regulatory amendments identified through internal regulatory review processes to update, clarify, correct, or streamline certain regulatory requirements applicable to the transportation of Class 7 (radioactive) materials. Comments must be received by December 12, 2022. To the extent possible, PHMSA will consider late filed comments as a final rule is developed.

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PHMSA 09-12-2022 proposed rule IAEA Harmonization to HMRs