CRN, i.e. Canadian Registration Number is a special number issued to manufacturers of boilers, pressure vessels and fittings / piping as CRN registration is needed for every province. Each province or territory in Canada requires a fresh CRN number to be issued. The primary purpose of issuing this number is to avert the possibility of disasters that certain industrial equipment(no s) can cause.
This equipment(no s) is Pressure Vessels, Boilers, Pressure Fittings and Piping systems. Before installation or manufacturing of this equipment(no s), the concerned party needs to submit the exact structural drawings, calculations, specifications, demonstrative drawings etc. to the authorities for approval. The issuing of this number is like a certificate for quality, ensuring that the equipment is safe to be used.