What is a Procedure Qualification Record (PQR) and how does it relate to a WPS?

• A. A chart listing weld sizes for each material.
• B. A diary of daily welding activities with no test data.
• C. A file containing material properties and calibration records.
• D. A record of test results proving a welding procedure can produce sound welds; it supports the development and qualification of a WPS.

Answer: (D)

A Procedure Qualification Record is the formal record of a welding procedure qualification test. It captures the procedure used, including process, base metal, filler metal, joint design, thickness, and any preheat or interpass temperature requirements, along with the welding parameters actually used and the test coupons prepared. It then shows the results of the required inspections and mechanical tests, demonstrating that the welds meet the applicable criteria. Because these test results prove the specified procedure can produce sound welds under those conditions, the PQR provides the evidence to support and qualify the Welding Procedure Specification. The WPS is the written guide used in production welding, and the PQR is the data that validates that guide. If any variables are changed, a new PQR (and requalification) is typically required to ensure continued sound welds.