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

  • PROFABCO INDUSTRIES INC O/A PFI MECHANICAL

    Hot Tapping and Line Stopping, Medical Gas Piping Installation CSA-Z7396.1 (SHOP & FIELD), 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), Boiler & Pressure Vessel Repair/Alteration (SHOP & FIELD)

  • PROFESSIONAL VALVE SERVICE LTD.

    Pressure Relief Valve Repair (SHOP & FIELD)

  • PROMATION NUCLEAR LIMITED

    Vessels, Pumps, Valves, Piping & Containment (N with NA), CSA-N285.0 Nuclear Fittings (SHOP ONLY), CSA-N285.0 Nuclear Fitting Repair or Modification (SHOP ONLY), Supports (NS) (Can be added to N/NPT/NA), ASME U-1-Mfr. of Sec. VIII, Div 1 Pressure Vessels (SHOP ONLY), CSA-B51 Fittings, Boiler & Pressure Vessel Repair/Alteration (SHOP & FIELD), Power Piping Installation ASME B31.1 (SHOP & FIELD), Process Piping Installation ASME B31.3 (SHOP & FIELD)

  • PROMINENT FLUID CONTROLS LTD

    Power Piping Installation ASME B31.1 (SHOP & FIELD), Process Piping Installation ASME B31.3 (SHOP & FIELD), CSA-B51 Fittings

  • PROPAK SYSTEMS LTD. O/A INNOVATIVE STEAM TECHNOLOGIES

    ASME S-2-Section I Boiler Manufacture (SHOP & FIELD), ASME PP-2-Section I Boiler External Piping (SHOP & FIELD), Boiler & Pressure Vessel Repair/Alteration (SHOP & FIELD), Power Piping Installation ASME B31.1 (SHOP ONLY), Process Piping Installation ASME B31.3 (SHOP ONLY), ASME U-4-Sec. VIII, Div 1 Pressure Vessel Mfr. (SHOP & FIELD)

  • PRO-PAR ONTARIO INC.

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

  • PROSYSCO LTD

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

  • PRO-TECH STAINLESS & SERVICES INC

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

  • PROTEMP REFRIGERATION INC.

    Refrigeration Piping Installation ASME B31.5 (SHOP AND FIELD)

  • PSB INDUSTRIES INC

    Process Piping Installation ASME B31.3 (SHOP ONLY)

  • PURE INGENUITY INC. - EQUIPMENT DESIGN & FABRICATION GROUP

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

  • PURE MECHANICAL GROUP INC.

    Refrigeration Piping Installation ASME B31.5 (SHOP AND FIELD)

  • PURITY GAS INC.

    Power Piping Installation ASME B31.1 (SHOP & FIELD), Process Piping Installation ASME B31.3 (SHOP & FIELD), CSA-B51 Fittings

  • QIDONG CORLAN EQUIPMENT CO LTD

    Process Piping Installation ASME B31.3 (SHOP ONLY)

  • QUALITY CRYOGENICS DIV. OF COMBINED AIR MECHANICAL SERVICES

    Refrigeration Piping Installation ASME B31.5 (SHOP AND FIELD), CSA-B51 Fittings, Process Piping Installation ASME B31.3 (SHOP & FIELD), Medical Gas Piping Installation CSA-Z7396.1 (SHOP & FIELD), Power Piping Installation ASME B31.1 (SHOP & FIELD)

  • QUALITY VALVE REPAIR INC.

    Pressure Relief Valve Repair (SHOP ONLY)