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Common practices for documentation, cleaning, and inspection.
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Measure all critical dimensions using calibrated micrometers or Coordinate Measuring Machines (CMM).
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The standard ensures that when a critical rotor is repaired, the work meets stringent mechanical, metallurgical, and aerodynamic integrity benchmarks to prevent catastrophic field failures. Key Technical Areas Covered
[Incoming Inspection & NDT] ➔ [Dimensional Metrology] ➔ [Engineering Assessment] │ [Final Dynamic Balancing] ◀─ [Machining & PWHT] ◀─ [Weld / Component Repair] Phase 1: Incoming Inspection Clean the rotor completely of process fouling.
Deeply technical criteria for both low-speed and high-speed (at-speed) dynamic balancing, which is critical to eliminating destructive vibrations during operation. How to Access API 687 Legally and Safely
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Machine the repaired areas back to original blueprint dimensions. Phase 4: Balancing Perform low-speed balancing to correct gross unbalance.
Remember: The cost of the standard is a fraction of the cost of one catastrophic repair. Invest in API 687 the right way. Your equipment—and your conscience—will thank you.
Gas turbine components experience extreme thermal environments. This section covers:
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