Issuance of a National Board VR Certificate of Authorization, the organization and its facilities are subject to a review of its quality system. An important part of that review will be the witnessing of the repair of several sample pressure relief valves. An independent test for operation and capacity of these sample pressure relief valves will be conducted at a National Board-accepted laboratory. The test is to verify the repaired valves meet applicable ASME Code requirements for performance and relieving capacity.
- The National Board Testing Laboratory is available to perform this testing, along with several other major valve manufacturers which operate National Board-accepted testing laboratories.
- A National Board representative will witness the valve testing.
The ASME BPVC Certification Program conforms to the rules governing the design, fabrication, assembly, and inspection of boiler and pressure vessel components during construction. In 1916, shortly after the first publication of the “Rules for the Construction of Stationary Boilers and for Allowable Working Pressures” (known today as the ASME BPVC), ASME began offering certification to companies in the pressure equipment industry to certify their quality control systems comply. Products manufactured by ASME BPVC Certificate Holders are certified and stamped with the Certification Mark in accordance with the applicable ASME BPVC Section. Today there are more than 6,800 Certificate Holders in the ASME BPVC Certification Program.
Scopes offered by the ASME BPVC Certification Program vary and include but are not limited to: power boilers, heating boilers, pressure vessels, fiber-reinforced plastic vessels, transport tanks and valves.
Repair of Safety Valves for Power Boilers
Assembly of relief valves for power boilers
Assembly of pressure vessel pressure relief valves
National Board of Boiler and Pressure Vessel Inspectors
National Board R stamp for the repair and/or alteration of boilers, pressure vessels, and other pressure-retaining items