Which of the following is NOT typically included in a welding procedure specification?

The answer identifies that the type of protective equipment required is not typically included in a welding procedure specification (WPS). A welding procedure specification primarily focuses on the technical aspects required to ensure proper welding performance. This includes details about the welding process—such as the type of welding method used, the materials to be welded, and specific equipment that must be employed in the welding process.

While protective equipment is crucial for safety purposes, it is generally addressed in other documents, such as health and safety plans, rather than in the WPS itself. The WPS's role is to outline the specific welding parameters and requirements needed to achieve a sound weld, ensuring compliance with industry standards like API 1104.

Thus, focusing on the essential elements of welding, such as process details, materials, and equipment specifics, aligns with the purpose of the WPS, while protective equipment details belong to safety documentation.