The CRN indicates that the design of the part (fitting), equipment or piping system meets the safety requirements described in the applicable codes, standards and regulations of that province or territory and that the product is approved for use. The province or territory is represented by a numeric digit or letter after the registration number, which indicates the location where the design is registered.
The numbers and letters corresponding to each province and territory are as follows..
1▸ British Columbia 2▸ Alberta 3▸ Saskatchewan 4▸ Manitoba 5▸ Ontario 6▸ Quebec 7▸ New Brunswick 8▸ Nova Scotia 9▸ Prince Edward Island 0▸ Newfoundland N▸ Nunavut T▸ Northwest Territories Y▸ Yukon Territory
A product may be registered in more than one province or territory at the same time. In that case, the first digit or letter after the decimal point refers to the province or territory where the model was first registered. For example, a design registered first in Ontario and then in Alberta may be assigned the number 4321.52.
A Canadian Registration Number (CRN) for a boiler or pressure vessel is defined by CSA B51 Article 4.3 as: consisting of a letter, four digits and a decimal point followed by up to ten digits and three letters. The first letter and four digits are part of a sequential numbering system used by the issuing province or territory.
The first digit or letter to the right of the decimal point indicates the county that issued the specific number.
The letter C may follow the designation of the first registration if a model is registered in all jurisdictions. No jurisdiction issues the letter C; it is a convenience for stamping once the manufacturer has received all registrations (see CSA B51-14 4.3.2 Notes(2)).
The letters CL may follow the designation of initial registration if a model is registered in all jurisdictions that require registration and is not registered in jurisdictions that do not require registration. No jurisdiction issues the letter CL; it is a convenience for stamping once the manufacturer has received registrations for all jurisdictions requiring registration (see CSA B51-14 4.3.2 Notes(3)).