On November 27, 2018, in a Notice of Proposed Rulemaking (NPRM), PHMSA proposed revisions to the hazardous materials regulations (HMR) aligning them with international HMRs. 83 Fed. Reg. 60970. PHMSA is proposing changes to proper shipping names, hazard classes, packing groups, special provisions,packaging authorizations, air transport quantity limitations, and vessel stowage requirements.
PHMSA states that these revisions are necessary to harmonize the HMR with recent changes made to the International Maritime Dangerous Goods Code (IMDG Code), the International Civil Aviation Organization’s Technical Instructions for the Safe Transport of Dangerous Goods by Air (ICAO Technical Instructions), and the United Nations Recommendations on the Transport of Dangerous Goods — Model Regulations (UN Model Regulations). Additionally, PHMSA proposes several amendments to the HMR that would allow for increased alignment with Transport Canada, Transportation of Dangerous Goods(Transport Canada TDG).