An Introduction to CRN

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:

  • 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 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

deconeq Engineering Group CRN Canadian Registration Number

CRN Details : 

  • 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 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 (see CSA B51-14 4.3.2 Notes(2)).

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.

  • 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 (see CSA B51-14 4.3.2 Notes(3)).

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.)

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