In Ontario, the fabrication of boilers and pressure vessels involves strict requirements for welder qualifications and welding procedures to ensure the integrity and safety of the equipment. The Technical Standards and Safety Authority (TSSA) sets forth guidelines in alignment with the ASME Boiler and Pressure Vessel Code. The key requirements include:

1. Welder Qualifications:

   • Welders involved in the fabrication of boilers and pressure vessels must be qualified in accordance with the ASME Boiler and Pressure Vessel Code, Section IX.
   • Qualification involves a rigorous process that includes performance testing of the welder's skills and the examination of their knowledge of welding procedures.

2. Welding Procedures:

   • Welding procedures must be established and documented for each specific application and material type.
   • These procedures are developed in accordance with the ASME Boiler and Pressure Vessel Code and must be submitted to the TSSA for review and approval.
   • The welding procedures include details such as welding processes, materials, preheat and interpass temperatures, filler metals, joint design, and post-weld heat treatment.

3. Procedure Qualification Record (PQR):

   • A Procedure Qualification Record (PQR) is required for each welding procedure.
   • The PQR documents the testing and results of the procedure qualification, including mechanical and non-destructive testing, to demonstrate that the welding procedure meets the required standards.

4. Welding Inspection:

   • The welding process is subject to inspection by TSSA-authorized inspection agencies or TSSA inspectors.
   • Inspections ensure that welds are performed in accordance with approved welding procedures and meet the specified quality and safety standards.

5. Non-Destructive Testing (NDT):

   • Non-destructive testing methods, such as radiographic testing or ultrasonic testing, may be required to assess the quality of welds and detect any defects.
   • The specific NDT methods used depend on the material, joint design, and the criticality of the welded connections.

6. Certification and Documentation:

   • Welders must possess valid certifications that demonstrate their qualification for the specific welding processes and materials used in the fabrication of boilers and pressure vessels.
   • All certifications and documentation related to welder qualifications and welding procedures must be maintained and made available for inspection by TSSA during audits.

Adherence to these requirements is essential to ensure that the welding processes used in the fabrication of boilers and pressure vessels in Ontario meet the highest standards of safety and quality. Non-compliance can result in the rejection of equipment, project delays, or other regulatory consequences.

In Ontario, the fabrication of boilers and pressure vessels involves strict requirements for welder qualifications and welding procedures to ensure the integrity and safety of the equipment. The Technical Standards and Safety Authority (TSSA) sets forth guidelines in alignment with the ASME Boiler and Pressure Vessel Code. The key requirements include:

1. Welder Qualifications:

   • Welders involved in the fabrication of boilers and pressure vessels must be qualified in accordance with the ASME Boiler and Pressure Vessel Code, Section IX.
   • Qualification involves a rigorous process that includes performance testing of the welder's skills and the examination of their knowledge of welding procedures.

2. Welding Procedures:

   • Welding procedures must be established and documented for each specific application and material type.
   • These procedures are developed in accordance with the ASME Boiler and Pressure Vessel Code and must be submitted to the TSSA for review and approval.
   • The welding procedures include details such as welding processes, materials, preheat and interpass temperatures, filler metals, joint design, and post-weld heat treatment.

3. Procedure Qualification Record (PQR):

   • A Procedure Qualification Record (PQR) is required for each welding procedure.
   • The PQR documents the testing and results of the procedure qualification, including mechanical and non-destructive testing, to demonstrate that the welding procedure meets the required standards.

4. Welding Inspection:

   • The welding process is subject to inspection by TSSA-authorized inspection agencies or TSSA inspectors.
   • Inspections ensure that welds are performed in accordance with approved welding procedures and meet the specified quality and safety standards.

5. Non-Destructive Testing (NDT):

   • Non-destructive testing methods, such as radiographic testing or ultrasonic testing, may be required to assess the quality of welds and detect any defects.
   • The specific NDT methods used depend on the material, joint design, and the criticality of the welded connections.

6. Certification and Documentation:

   • Welders must possess valid certifications that demonstrate their qualification for the specific welding processes and materials used in the fabrication of boilers and pressure vessels.
   • All certifications and documentation related to welder qualifications and welding procedures must be maintained and made available for inspection by TSSA during audits.

Adherence to these requirements is essential to ensure that the welding processes used in the fabrication of boilers and pressure vessels in Ontario meet the highest standards of safety and quality. Non-compliance can result in the rejection of equipment, project delays, or other regulatory consequences.

1. Purpose:

   • Pressure Vessel: A pressure vessel is designed to contain fluids or gases at a pressure different from the ambient pressure. Its primary function is to store, transport, or process these fluids under high or low pressure conditions.
   • Boiler: A boiler, on the other hand, is a specific type of pressure vessel designed to convert water into steam. Its primary purpose is to generate steam for heating, power generation, or other industrial processes.

2. Function:

   • Pressure Vessel: Pressure vessels are versatile and can be used for various applications such as storing compressed air, chemicals, or liquids under pressure. They are not involved in the direct production of steam or heat.
   • Boiler: Boilers are specialized pressure vessels that use heat from fuel combustion or other heat sources to produce steam. This steam is then used for heating or to power machinery.

3. Components:

   • Pressure Vessel: Pressure vessels typically have a simple design, consisting of a container with various fittings for pressure measurement, safety valves, and access points.
   • Boiler: Boilers have a more complex design with additional components like burners, tubes, and a combustion chamber to facilitate the generation of steam.

4. Regulations:

   • Both pressure vessels and boilers are subject to strict safety regulations, with specific codes and standards governing their design, fabrication, and operation. These regulations vary depending on the region and the intended use of the equipment.

5. Applications:

   • Pressure vessels find applications in industries such as petrochemical, pharmaceutical, and manufacturing where the storage or transport of pressurized fluids is required.
   • Boilers are primarily used in power plants, heating systems, and industrial processes where steam is needed for energy or heating.

In summary, the main difference between a pressure vessel and a boiler lies in their primary purpose and function. While pressure vessels are designed to store or transport fluids under pressure, boilers are specialized vessels used to generate steam for various industrial applications. Understanding these distinctions is crucial for ensuring the safe and efficient operation of these essential components in different industries.

• When the BPV is insured with a boiler and machinery insurance policy, the insurance company is responsible for inspecting the device and issuing the certificate of inspection required by the Ontario Regulation 220/01: Boilers and Pressure Vessels.
• When the boiler or pressure vessel is not insured, TSSA inspects the device and issues the Certificate of Inspection required by the Ontario Regulation 220/01.

1. A pressure container that holds a gas, vapor, or liquid with a maximum allowable working pressure of 15 psi or lower.
2. A pressure container that holds liquids that are no more hazardous than water, operating at a temperature of 150°F or lower, and with a maximum allowable working pressure of 250 psi or lower.
3. A pressure container designed for domestic use, having an internal diameter of 24 inches or smaller, used for storing hot water not exceeding 212°F and with a heat input of 120 kW or lower.
4. A pressure container used exclusively for hydraulic purposes, operating at a temperature not exceeding 150°F (65°C).
5. A pressure container with an internal diameter of 24 inches (610 mm) or smaller, connected in a liquid pumping system, operating at a temperature not exceeding 150°F (65°C), and containing compressed air or an inert gas as a cushion.
6. A pressure container with a capacity of 1 and one-half (1½) cubic feet (42.5L) or smaller, excluding fittings.