Initial run-out and clearance measurements.
Minor damage—such as scratches or pits less than 0.005 inches deep—can often be resolved through polishing or blending. Why Compliance Matters API Recommended Practice 687, 2nd Edition
Generally, methods like plasma spray, metalizing, plating, or sleeving are prohibited for repairing bearing journals, seal areas, and impeller fits unless specifically authorized. Api 687 Rotor Repair Pdf Download--------
API 687 categorizes the repair process into distinct phases and chapters specialized for different types of equipment, such as centrifugal compressors (Chapter 2), axial compressors (Chapter 3), and steam turbines (Chapter 4).
Assessing the initial state of balance before any disassembly. 2. Phase II Inspection (Disassembled Rotor) Initial run-out and clearance measurements
Major erosion or corrosion should be repaired by welding, provided it is supported by a detailed "weld map" and documentation.
Now in its , this document provides the technical foundation for restoring equipment to "like-new" or improved condition, ensuring at least five years of uninterrupted operation . Key Objectives of API 687 API 687 categorizes the repair process into distinct
If Phase I reveals major issues, the rotor is fully disassembled. Every individual component (impellers, disks, shafts) undergoes the same rigorous testing performed in Phase I.
The primary goal of a repair performed under API 687 is to produce a safe, reliable rotating element that maintains its performance capabilities. Key objectives include: