Boilers & Pressure Vessels
Design Submission Requirements
Before construction or installation of a boiler or pressure vessel the design must be registered unless otherwise provided in the regulations.
Registration submissions must include:
The drawings, specifications, and other information submitted must show:
- The design pressure and temperature (including MDMT if applicable);
- Details of the arrangement and dimensions of all component parts (including the specified minimum thickness after forming for formed heads);
- The ASME specification numbers of all materials (including grades, types, etc.) for which an ASME specification number is required by the applicable code or standard;
- Details of the proposed construction and welded joint configurations;
- The section and paragraph number of the ASME code under which it is to be constructed;
- The extent of code required and other non-destructive examination;
- Heat treatment (holding temperature and holding time) if applicable;
- Impact testing if applicable;
- Hydrostatic or pneumatic test pressure;
- Flange ratings;
- Identification of any Code Cases intended to be applied to the design;
- A report of any physical tests conducted for the purpose of establishing the maximum allowable working pressure of the boiler, pressure vessel, or any part thereof; and
- Any other information that the design reviewer may require to determine that the design is suitable for registration (as authorized by the chief inspector).
Please ensure that the submitted drawings are complete enough that, without having to assume anything, the same drawings and specifications could be used to build the exact same item and have it meet the code.
Design registration will be denoted by the Canadian Registration Number (CRN) assigned to the design. Any number of units may be made to one registered design, unless the code or regulations change to invalidate the registered design or the registration limits the number of units that may be built to the design.
Submitting a Design
Electronic submission of design registration is required, see Electronic Application for Design Registration for instructions.
It is not necessary that the drawings be stamped by a registered Professional Engineer unless the code of construction requires an Engineering Judgement.
- The design drawings and code calculations of a pressure vessel of which any part thereof is designed per part U-2(g) of ASME Section VIII Div 1 shall be certified by a Professional Engineer. When finite element analysis (FEA) is used to support a design submission, the requirements of Annex J of CSA B51-19 (Canadian Standards Association Boiler, Pressure Vessel, and Pressure Piping Code) shall be met.
- Pressure vessels that are to be used in the handling and storage of liquefied petroleum gas must be designed for a pressure not less than 1,725 kilopascals.
- Pressure vessels used for the storage of anhydrous ammonia must be designed for a pressure not less than 1,725 kilopascals.
- Pressure vessels that are to be used in the handling and storage of compressed gases other than anhydrous ammonia and liquefied petroleum gas must be designed for a pressure not less than the vapour pressure at 46°C of the gas to be contained.
The design of a boiler or pressure vessel is not required to be registered pursuant to The Boiler and Pressure Vessel Act if:
- The boiler or pressure vessel:
- Is constructed in strict compliance with the administrative and technical rules of the appropriate section of the ASME code;
- Is stamped in accordance with the ASME code with the applicable code symbol stamp;
- Is registered with the National Board of Boiler and Pressure Vessel Inspectors (NBBI);
- Records the NBBI registration number on the data report required by the ASME code; and
- Stamps the NBBI registration number on the nameplate of the boiler or pressure vessel. – OR –
- The boiler or pressure vessel:
- Is constructed in a province or territory of Canada other than Saskatchewan in strict compliance with the administrative and technical rules of the appropriate section of the CSA B51 code;
- Is assigned a Canadian Registration Number (CRN) by the boiler and pressure vessel authority of the province or territory in which it is constructed;
- Is inspected during construction by an inspector employed by the boiler and pressure vessel authority of the province in which it is constructed;
- Records the CRN on the data report required by the CSA B51 code; and
- Stamps the CRN on the nameplate of the boiler or pressure vessel.
Before a boiler or pressure vessel mentioned above is installed, the owner must submit the data report for registration. The fee for the registration of the data report can be found in the fee schedule.
Please see Alternative to CRN Registrations for exclusions.
Fabrication of a boiler or pressure vessel for use within Saskatchewan must comply with The Boiler and Pressure Vessel Act, Regulations and CSA B51.
Fabrication within Canada may be performed by a manufacturer holding a valid Certificate of Authorization issued by either ASME or the provincial regulatory authority governing that facility.
Fabrication outside of Canada may only be performed by a manufacturer holding a valid Certificate of Authorization issued by ASME for the product being manufactured. The boiler or pressure vessel must also be stamped with the appropriate ASME symbol and registered with the National Board of Boiler and Pressure Vessel Inspectors.