What is a Canadian Registration Number (CRN)?
The Canadian Registration Number (CRN) is a number issued by each province or territory of Canada for a component (fitting), equipment or piping system. The CRN indicates that the design of the component (fitting), equipment or piping system meets the safety requirements outlined in the applicable codes, standards and regulations of that province or territory and the product is accepted for use. The province or territory is represented by a numeric digit or a letter following the decimal point after registration number, which indicates the location in which the design is registered to. The digits and letter corresponding to each province and territory are as following:
A product may be registered to more than one province or territory at same time. In this case, the first digit or letter after the decimal refers to the first registering province or territory. For example, a design registered first in Ontario and then in Alberta might be issued the number 4321.52
CRN Details :
4.3.2(2) If a design is registered in all provinces and territories, the CRN stamped on the nameplate and marked on the data report may be shortened to include the designation of first registration plus the letter “C”, e.g., K4567.5C.
4.3.2(3) If a design is registered in all provinces and territories that require registration but not in provinces and territories that do not require registration, the CRN may be shortened to include the designation of first registration plus the letters “CL”, e.g., K4567.5CL. (The “L” means limited.)