Generally, methods like plasma spray, metalizing, plating, or sleeving are prohibited for repairing bearing journals, seal areas, and impeller fits unless specifically authorized.
Importance of Following Correct Standards: Emphasize why using the right standard is crucial for safety and compliance. Api 687 Rotor Repair Pdf Download--------
The standard is divided into specific chapters to address various types of equipment and technical processes: General Rotor Repair (Chapter 1) methods like plasma spray
: Includes methods such as welding for major erosion or corrosion, while strictly prohibiting certain methods like plasma spray for critical fits. Inspection & Acceptance Criteria decide: machine out
For each defect, decide: machine out, weld repair, or scrap. API 687 prohibits weld repair in certain zones (e.g., within 3 mm of a stress relief groove).
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