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Pressure Welder

Pressure welders weld parts together to construct pressure vessels, boilers, pressure piping systems and associated fittings.


Alberta Boilers Safety Association
9410 20th Avenue
Edmonton, Alberta
Canada T6N 0A4
Phone number: 780-437-9100


Under Alberta's Safety Codes Act and Pressure Welder Regulation, you must hold an appropriate certificate from the Alberta Boilers Safety Association (ABSA) and a performance qualification card to weld on pressure vessels, boilers, pressure piping systems or fittings. There are three types of certificates: (1) Grade B Pressure Welder, (2) Grade C Pressure Welder, and (3) Machine Welding Operator. The performance qualification card must specify the welding process, base material group, filler metal group, thickness of deposited weld metal, positions, backing and minimum pipe diameter.

What You Need

Each type of certificate has different qualification requirements. Performance qualification cards may be issued by authorized safety codes officers or authorized testing organizations. For official, detailed information about certification requirements, visit the ABSA website.

Working in Alberta

Pressure welders who are certified by and in good standing with a regulatory organization elsewhere in Canada may be eligible for certification in Alberta if certified pressure welders in the two jurisdictions have similar competencies. For more information, see What if I am already certified in another province or territory? and the Alberta regulatory authority (below).

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