What does a Welding Procedure Specification (WPS) define?

• A. How to perform a weld, including process, filler material, and parameters.
• B. The project's budget.
• C. The worker's PPE.
• D. The building code for stairs.

Answer: (A)

A Welding Procedure Specification defines exactly how to perform a weld, including the welding process to use, the filler material, and the specific parameters that must be followed (such as current, voltage, travel speed, heat input). It may also specify preheat, interpass temperature, and any post-weld heat treatment, along with related factors like joint type and position. This formal document ensures welds meet the project’s code and quality requirements and provides a repeatable, qualified method for production welding. It isn’t about the project budget, the worker’s PPE, or building codes for stairs, which are handled separately from the WPS.