Boiler Circulation Pump Overhaul Checklist

Direct Answer

A reliable boiler circulation pump overhaul needs controlled inspection before dismantling, traceable dimensional and electrical measurements, documented repair decisions, clean assembly, and final verification against OEM or approved plant criteria. The checklist below is a planning guide; the pump-specific manual and approved quality plan remain controlling documents.

Incoming and Pre-Dismantling Checks

• Record nameplate, serial number, operating hours, failure history, and removal observations.
• Photograph orientation, cable routing, fasteners, shims, and external condition.
• Review vibration, motor current, temperature, flow, pressure, and protection-trip records.
• Perform permitted insulation resistance, phase resistance, and continuity checks.
• Check shaft freedom, axial movement, visible leakage, deposits, and transport damage.

Dismantling and Inspection

• Mark component orientation and maintain traceability.
• Measure running, sleeve-bearing, thrust, wear-ring, and rotor clearances.
• Check shaft runout, journal condition, impeller erosion, and balance condition.
• Inspect can liner using visual and suitable nondestructive examination methods.
• Examine stator winding, leads, joints, insulation, core, and cooling passages.
• Record all dimensions against OEM drawings or an approved engineering basis.

Repair and Assembly Controls

Repair worn fits, renew bearings and seals as required, restore impeller and wear surfaces, and complete winding or liner work only to an approved procedure. Verify material certificates and component dimensions before assembly. Maintain cleanliness, use controlled tightening values, confirm rotor freedom at each assembly stage, and preserve measured final clearances.

Final Verification and Documentation

• Electrical tests appropriate to the motor design and repair scope.
• Pressure or leak testing of repaired pressure-boundary components.
• Rotor runout, balance, free rotation, and final clearance records.
• Functional or performance testing where the facility and approved scope permit it.
• Inspection report, repair photographs, measurement sheets, test certificates, and recommended operating checks.

For a scoped overhaul plan, contact our boiler circulation pump repair team in India.

FAQ

How often should a BCP be overhauled?

Use the OEM interval, plant experience, operating hours, water chemistry, condition-monitoring trends, and outage strategy. Condition-based decisions are preferable to a generic interval.

Which measurements should be retained after overhaul?

Retain as-found and as-left dimensions, clearances, runout, electrical results, NDT reports, balance records, material traceability, and final test documentation.