HWY.3.A. - Evaluation of American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code (BPVC) Section XII requirements for the manufacture and continued service of highway tanks in Canada

The Transportation of Dangerous Goods Directorate (TDG), as part of the Safety and Security Group at Transport Canada (TC) serves as the major source of regulatory development, information, and guidance on dangerous goods transport in Canada. TDG requires information to determine if adopting ASME Section XII and National Board Inspection Code (NBIC) requirements in Canada, for highway tanks specifically, would provide an equivalent level of safety.The objective of this project is to assess safety standards and safety requirements for highway tanks by:• Comparing ASME Section XII and similar requirements in CSA B620 in terms of design and construction requirements; and• Comparing NBIC requirements and similar requirements in CSA B620 in terms of non-construction requirements (e.g., repair, modification, periodic test and inspections).Note: The comparison is not to include cryogenic portable tanks and ton tanks.This project is designed to inform TDG on whether the acceptance of highway tanks in Canada designed, constructed and certified in accordance with ASME’s BPVC Section XII, Rules for Construction and Continued Service of Transport Tanks (“ASME Section XII”) and their qualification, requalification and maintenance in accordance with the NBIC, provides an equivalent level of safety to the current CSA B620 safety standard.