The Technical Standards and Safety Authority (TSSA) adopts standards and administers the policies, procedures and processes for the certification of welders and brazers regulated under the Technical Standards and Safety Act, 2000’s Ontario Regulation 220/01: Boilers and Pressure Vessels (BPVs). Businesses that repair/alter BPVs and install/repair associated piping systems are required to hold a Certificate of Authorization (COA) from TSSA or another Canadian jurisdiction. Companies with a National Board Certificate of Authorization (“R” stamp) are also acceptable for repairs/alterations of BPVs.
In the following directory, you can find a listing of businesses that hold a COA issued by TSSA. Please note that the information in this directory is updated periodically and may not reflect the most recent information available for each entry. If you have a question or concern regarding any of the information contained on this page, please contact customerservices@tssa.org or call 1-877-682-TSSA (8772).
ONYX MECHANICAL LTD
- Address:
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214 WILKINSON RD
BRAMPTON, ON
Canada
L6T 4M4 - Products/Services:
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Power Piping Installation ASME B31.1 (SHOP & FIELD)
Status: 01-22-2026
Number: QA-04120
Fabrication, assembly, and repair of power piping at the above location and fabrication, assembly, erection, and repair of power piping at field sites controlled by the above location in accordance with CSA Standard B51, Boiler, Pressure Vessel and Pressure Piping Code and ASME B31.1 Power Piping.
Process Piping Installation ASME B31.3 (SHOP & FIELD)
Status: 01-22-2026
Number: QA-04121
Fabrication, assembly, and repair of process piping at the above location and fabrication, assembly, erection, and repair of process piping at field sites controlled by the above location in accordance with CSA Standard B51, Boiler, Pressure Vessel and Pressure Piping Code and ASME B31.3 Process Piping.
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