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).”

  • Clear Results

TSSA Registered Certificate Of Authorization

  • E & M ENGINEERING SERVICES & PRODUCTS INC

    CSA-B51 Fittings, ASME U-1-Mfr. of Sec. VIII, Div 1 Pressure Vessels (SHOP ONLY), Boiler & Pressure Vessel Repair/Alteration (SHOP ONLY), Power Piping Installation ASME B31.1 (SHOP ONLY), Process Piping Installation ASME B31.3 (SHOP ONLY)

  • E D INDUSTRIAL LTD

    Power Piping Installation ASME B31.1 (SHOP & FIELD), Process Piping Installation ASME B31.3 (SHOP & FIELD)

  • E S FOX LTD

    Power Piping Installation ASME B31.1 (SHOP ONLY), Process Piping Installation ASME B31.3 (SHOP ONLY), Medical Gas Piping Installation CSA-Z7396.1 (SHOP & FIELD), Refrigeration Piping Installation ASME B31.5 (SHOP ONLY)

  • E.S. FOX LIMITED

    Boiler & Pressure Vessel Repair/Alteration (SHOP & FIELD), Power Piping Installation ASME B31.1 (SHOP & FIELD), CSA-B51 Fittings, Medical Gas Piping Installation CSA-Z7396.1 (SHOP & FIELD), Process Piping Installation ASME B31.3 (SHOP & FIELD), Boiler & Pressure Vessel Repair/Alteration (SHOP & FIELD), Power Piping Installation ASME B31.1 (SHOP & FIELD), Medical Gas Piping Installation CSA-Z7396.1 (SHOP & FIELD), Process Piping Installation ASME B31.3 (SHOP & FIELD), CSA-B51 Fittings

  • E.S. FOX LTD

    CSA-N285.0 Nuclear Item Repair, Modification or Replacement (FIELD ONLY), Supports (NS) (Can be added to N/NPT/NA), CSA-N285.0 Nuclear Fitting Repair or Modification (SHOP & FIELD), Material Organization (MO) (Can be added to N/NPT), CSA-N285.0 Nuclear Fittings (SHOP ONLY), Vessels, Pumps, Valves, Piping & Containment (N with NA), Shop Assembly (NA), Boiler & Pressure Vessel Repair/Alteration (SHOP & FIELD), Process Piping Installation ASME B31.3 (SHOP & FIELD), Medical Gas Piping Installation CSA-Z7396.1 (SHOP & FIELD), CSA-B51 Fittings, Refrigeration Piping Installation ASME B31.5 (SHOP AND FIELD), Hot Tapping and Line Stopping, ASME U-1-Mfr. of Sec. VIII, Div 1 Pressure Vessels (SHOP ONLY), ASME U2-3-Sec. VIII, Div 2 Pressure Vessel Mfr. (SHOP & FIELD), ASME S-2-Section I Boiler Manufacture (SHOP & FIELD), Power Piping Installation ASME B31.1 (SHOP & FIELD)

  • EASTERN FLUID POWER INC

    Power Piping Installation ASME B31.1 (FIELD ONLY)

  • ECLIPSE AUTOMATION INC

    Power Piping Installation ASME B31.1 (SHOP & FIELD), Process Piping Installation ASME B31.3 (SHOP & FIELD)

  • ECO-TEC INC.

    ASME U-1-Mfr. of Sec. VIII, Div 1 Pressure Vessels (SHOP ONLY), Boiler & Pressure Vessel Repair/Alteration (SHOP & FIELD), Power Piping Installation ASME B31.1 (SHOP & FIELD), Process Piping Installation ASME B31.3 (SHOP & FIELD)

  • EDGEWATER INDUSTRIAL SERVICES INC.

    Boiler & Pressure Vessel Repair/Alteration (SHOP & FIELD), Power Piping Installation ASME B31.1 (SHOP & FIELD), Process Piping Installation ASME B31.3 (SHOP & FIELD)

  • EDWARD BYRON KREPS O/A TK PIPING

    Power Piping Installation ASME B31.1 (SHOP & FIELD), Process Piping Installation ASME B31.3 (SHOP & FIELD), Refrigeration Piping Installation ASME B31.5 (SHOP AND FIELD)

  • EDWARD RODGERS O/A DIRECT MECHANICAL SERVICES

    ASME PP-1-Section I Boiler External Piping (SHOP ONLY), Power Piping Installation ASME B31.1 (FIELD ONLY)

  • EKT 90 INC.

    Boiler & Pressure Vessel Repair/Alteration (SHOP & FIELD), Power Piping Installation ASME B31.1 (SHOP & FIELD), Process Piping Installation ASME B31.3 (SHOP & FIELD)