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

• A. Documents approved welding processes, parameters, and procedures to ensure consistent, code-compliant welds.
• B. Lists the consumables stocked for the shop.
• C. Records the welders' hours.
• D. Specifies the color of protective coatings to be used.

Answer: (A)

A Welding Procedure Specification defines the exact welding conditions for a given joint and material so welds are repeatable and meet code requirements. It documents the approved process and the specific parameters to use—base material, thickness range, joint configuration, filler metal or electrode, shielding gas if needed, welding position, and the precise electrical and mechanical settings like current, voltage, travel speed, preheat and interpass temperatures, and any required post-weld heat treatment. This ensures that any weld produced under that procedure will have consistent quality and be acceptable to code inspectors because the procedure has been qualified and is traceable. The other options describe unrelated records—inventory of consumables, labor hours, or coating colors—not the controlled welding method and conditions that a WPS provides.