Direct final rule.
This direct final rule incorporates by reference the most recent editions of the ASME Boiler and Pressure Vessel Code. The purpose of this update is to enable non-specification (nurse tank) manufacturers and other DOT and UN specification packaging manufacturers to utilize current technology, materials, and practices to help maintain a high level of safety. PHMSA is replacing the ASME referenced standard (1998 Edition) with the new, current ASME standard (2015 Edition) for boiler and pressure vessels. PHMSA is also replacing the ASME 1998 Edition referenced standard of ASME's Transportation Systems for Liquids and Slurries: Pressure Piping to the current 2012 Edition.