Which code has not been uniformly adopted by all provinces regarding boilers and pressure vessels?

The National Fire Alarm (NFA) code does not pertain specifically to boilers and pressure vessels, which is why it is not uniformly adopted across provinces for this context. This code primarily addresses fire alarm systems and their installations, regulations, and safety requirements rather than the operation or safety standards for boilers and pressure vessels.

On the other hand, CSA B51 is a Canadian Standard that specifically addresses the requirements for the design and construction of boilers and pressure vessels, and it is widely recognized across various provinces. ANSI B31.5 covers the safety standards for refrigeration piping, which is relevant to pressure systems, and ASME I through IX includes essential guidelines on the construction and design of pressure vessels and boilers, fundamentally integrating accepted engineering practices. Since these codes directly pertain to the operation and regulation of boilers and pressure vessels, their adoption is more consistent among the provinces compared to the NFA.