CRN Registration
Designs for boilers, pressure vessels, tube and shell heat exchangers, plate heat exchangers, valves, flow meters, pipe fittings, B16.5 flanges, pressure coils, piping skids and piping systems to be installed in Canada shall be submitted to the regulatory authority to obtain CRN (Canadian Registration Number). We do review, code calculations of designs. We also help do submissions of design package to each jurisdiction to get CRN.
Canadian Registration Number or CRN Number:A Canadian Registration Number (CRN) is defined by CSA B51 4.3 as a number issued by the regulatory authority to designs when they are accepted and registered. It typically consists of a letter, four digits, and a decimal point followed by up to ten digits and/or two letters. The first letter and four digits are part of a sequential numbering system used by the issuing province or territory. The first digit/letter to the right of the decimal point indicates the first province/territory it is registered in, which is detailed below:
| 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 |
| T - Northwest Territories | |
| Y - Yukon Territory | N - Nunavut |
For example, M1234.56 means design was first registered in Ontario and then accepted by Quebec.
Boiler & pressure vessels:Per TSSA guidelines, all pressure vessels and boilers must be registered prior to fabrication except the following:
- a low pressure boiler that has either a wetted heating surface of 30 square feet or less, or a power rating of 30 KW or less;
- a boiler in a hot liquid heating system that has no obstructions (valves) to free circulation between the boiler and an expansion tank which is vented to atmosphere;
- a pressure vessel that that contains a gas, vapour or liquid at maximum working pressure of 15 psi or less;
- a pressure vessel that contains liquids not more hazardous than water at a temperature of 150F or less and at a maximum working pressure of 250 psi or less;
- a pressure vessel for domestic use that has a internal diameter of 24" or less for the storage of hot water at temperature no greater than 212F and the heat input is 120KW or less;
- a pressure vessel that is used exclusively for hydraulic purposes at a temperature no greater than 150F;
- a pressure vessel that has an internal diameter of 24" or less in a liquid pumping system at a temperature no greater than 150F and that contains air or an inert gas compressed to serve as a cushion;
- pumps, compressors, turbines, generators, engines, and hydraulic or pneumatic cylinders where the primary design considerations or stresses, or both , are derived from the functional requirements of the device;
- a pressure vessel having a capacity of 1.5 cubic feet or less shall be registered as a category "H" fitting;
- a pressure vessel having an internal diameter of 6" or less shall be registered as a category "H" fitting.
Fittings:
Fittings refer to pipe fittings, flanges, valves, expansion joints and flexible hoses, filters and gauges etc. Fittings are classified as follows in CSA-B51:
| Category | Type of fitting |
|---|---|
| A | Pipe fittings, including couplings, tees, elbows, wyes, plugs, unions, nipples, caps,reducers |
| B | Flanges |
| C | Line valves |
| D | Expansion joints, flexible connections, hose assemblies |
| E | Strainers, filters, separators, steam traps |
| F | Pressure gauges, level gauges, sight glasses, levels, Pressure transmitters |
| G | Pressure relief valves |
| H | Pressure-retaining components that do not fall into any of the above categories |
1. some fittings do not need to be CRN registered in Saskatchewan. Please follow the link for details: http://www.tsask.ca/codes-standards-compliance/fitting-design
2. some fittings do not need to be CRN registered in British Columbia. See http://safetyauthority.ca/node/517
Piping CRN registration:Piping submission requirements can be found on TSSA web.