The Canadian Registration Number (CRN) is a number issued by each province or territory in Canada by an authorized safety authority for any boiler, pressure vessel or fitting that operates at a pressure greater than 15 psig (1 barg). If your pressure retaining product or system operates at a pressure greater than 15 psig you may require a Canadian Registration Number (CRN) to legally install and operate your product in Canada.
The CRN identifies that the design has been accepted and registered for use in that province or territory. The first registering province or territory is indicated by the first digit after the decimal. For example, a design registered first in Ontario and then in British Columbia might be issued the number 0H6245.51. If the letter C follows the designation of the province of first registration, it means the design is subsequently registered across Canada. For example: 0E3621.2C shows that the design was first registered in Alberta and then across Canada.
| 1 = British Columbia | 8 = Nova Scotia |
| 2 = Alberta | 9 = Prince Edward Island |
| 3 = Saskatchewan | 0 = Newfoundland |
| 4 = Manitoba | N = Nunavut |
| 5 = Ontario | T = Northwest Territories |
| 6 = Quebec | Y = Yukon Territory |
| 7 = New Brunswick |
A list of authorized safety authorities and their contact information can be found on the Provincial Agencies page of this website.