To ensure engineering precision and plant safety, always consult the latest authorized edition of the API 687 standard through your organization's legal engineering database subscription.
What are you repairing? (e.g., centrifugal compressor, steam turbine)
Used on ferromagnetic shafts and impellers to reveal surface and near-surface cracks.
Ensuring journals and sealing areas meet specifications. 2. Specialized Repair Techniques
: Initial "as-received" assessment including visual inspection, cleaning, and reporting on the assembled rotor. Phase II Inspection
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API 687 works in concert with a family of other API standards:
Applied to non-porous, non-magnetic components (like certain stainless steel impellers) to find surface cracks.
API Releases the 2nd Edition of RP 687: Special-purpose Rotating Equipment Repairs
Final dimensional inspection reports, including runout charts.
While the full current standard is copyrighted, limited free resources are available for research and education.
Rotors are subject to wear and tear, corrosion, and other forms of damage, which can lead to reduced performance, increased vibration, and ultimately, equipment failure. Repairing rotors is essential to maintain equipment reliability, reduce downtime, and minimize costs associated with replacement. API 687 provides a framework for rotor repair, ensuring that repairs are done safely, efficiently, and to a high standard.
Worn or damaged components such as impellers, balance pistons, thrust collars, and blades are replaced or refurbished.