Surface preparation and welding procedures are the responsibility of the:

According to API Std 936 – Refractory Installation Quality Control, the roles and responsibilities of each party are clearly defined. Specifically, it states:

“The contractor shall be responsible for… the preparation of the surface prior to lining, and the quality of the workmanship, including the welding of anchors and any required preheat or post-weld heat treatment.”

— API Std 936, Section 5.3.1, Contractor Responsibilities​

Therefore, surface preparation and welding activities, including anchor welding, fall under the Contractor's scope of work. The inspector's role is to verify compliance, not to execute procedures.

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