What is the basis for acceptance of a WPDS?

• A. The project schedule
• B. The corresponding PQR
• C. The manufacturer's warranty
• D. The client's approval

Answer: (B)

Acceptance of a WPDS rests on proven capability, shown by the welding procedure qualification results. The key document is the Procedure Qualification Record, which records the tests that demonstrate the welding procedure, when used with the specified variables, can produce welds that meet the required properties. The PQR details the materials, processes, variables, and test outcomes, verifying that the procedure consistently yields acceptable welds. Once that verified capability is established, the WPDS is considered acceptable for guiding production welds. Administrative items like the project schedule, manufacturer’s warranty, or client approval don’t provide that technical proof of performance.