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CRN

CRN

Abbreviation for Canadian Registration Number


A Canadian Registration Number (CRN) for a boiler or pressure vessel is defined by CSA B51 Clause 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 province that issued the particular number


the following identifications are used in accordance with the code:


1 - British Columbia

2 - Alberta

3 - Saskatchewan

4 - Manitoba

5 - Ontario

6 - Quebec

7 - New Brunswick

8 - Nova Scotia

9 - Prince Edward Island

0 - (Zero) Newfoundland

T - Northwest Territories

Y - Yukon Territory

N - Nunavut



the letter C may follow the designation of first registration if a design is registered in all jurisdictions. No jurisdiction issues the letter C; it is a convenience for stamping once the manufacturer has received all the registrations.



the letters CL may follow the designation of first registration if a design is registered in all jurisdictions that require registration and is not registered in the 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 that require registration. (The "L" means limited.)


to be eligible for use in Alberta, the CRN must have the digit 2, or the letter C, somewhere after the decimal point.

For example, the following could be valid CRNs: B1079.23, M2138.5C and V1234.5CL.


A Canadian Registration Number or Pressure Piping number is issued if the design is satisfactory.