What is the purpose of a Welding Procedure Specification (WPS)?

• A. A WPS is a documented procedure for how to weld; includes process, filler metal, preheat/interpass temps, welding positions, joint design, and acceptance criteria
• B. A WPS is a test record showing code compliance
• C. A WPS is a performative endorsement by a welder
• D. A WPS is a list of welding equipment brands allowed on a project

Answer: (A)

The purpose of a Welding Procedure Specification is to provide the approved, standardized instructions for how a weld must be performed. It specifies the welding process, filler metal, preheat and interpass temperatures, welding positions, joint design, and the acceptance criteria. This document acts as the blueprint for producing consistent, code-compliant welds across operators and shifts, ensuring each weld meets the required properties and passes inspections. It ties to the qualification process and supports traceability and quality control on a project. It isn’t simply a test record, a welder’s endorsement, or a list of equipment brands; those are separate documents or items.