There are several codes, standards and regulations in Canada that require mandatory CWB Certification for companies involved in the welding operation.
Buildings and structures falling under the jurisdiction of the National Building Code of Canada (NBCC) – and its Provincial versions – must be welded by CWB Certified companies.
Neither the National nor the Provincial Building Codes have any direct reference to welding certification. The requirements for welding certification of fabricators and erectors are done via the mandatory requirement in the NBCC that specific design standards shall be used for design of all structural steel. Further, these specified design standards have clear provisions for mandatory welding certification required for fabricators and erectors conducting any work in accordance to the National Building Code of Canada. Below are the references in the NBCC to the design standards:
CSA A660, CSA S16, CSA A23.3, CSA A136 and CSA S157 have mandatory provisions requiring fabricators and erectors to be CWB certified to one of the following standards:
For the ease of reading, the CWB developed a document that reflects the Linkage between NBCC and Welding Certification.
In addition, a number of safety and product codes have direct reference to CWB certification. These include:
Due to the large number of CSA Standards that directly reference CSA Welding Certification Standards, the CWB has compiled relevant excerpts from all currently published CSA standards into reference guides.
The intent of these documents is to inform and encourage consultants, building officials, purchasers, government departments and other authorities to use these standards, specify and enforce certification requirements, where applicable.