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Contaminants must be completely removed to expose the base metal for structural evaluation.

Let me know how you'd like to . API 687 Rotor Repair Guidelines | PDF - Scribd

Engineers compare NDT results and dimensional measurements against original equipment manufacturer (OEM) specifications or API 687 minimum tolerances. A formal repair procedure is drafted, outlining whether components need minor machining, component replacement, or specialized welding. 4. Shaft Journal and Seal Area Refurbishment