Sep 28, 2026Final ruleOfficial source
Final rule: Hazardous Materials: Incorporation of ASME Code Section XII and the National Board Inspection Code
PHMSA is amending the Hazardous Materials Regulations (HMR) to incorporate by reference and authorize the use of the 2015 edition of the American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code, Section XII--Rules for Construction and Continued Service of Transport Tanks for the construction and continued service of certain specification cargo tank motor vehicles (CTMVs), cryogenic portable tanks, and multi-unit tank car tanks. PHMSA is also amending the HMR to incorporate by reference and authorize the use of the 2015 edition of the National Board of Boiler and Pressure
Effective Oct 28, 2026