To describe a standard operating procedure for breakdown rectification of centrifugal pumps.
1.0 PURPOSE:
To describe a standard operating procedure for breakdown rectification of centrifugal pumps.
2.0 SCOPE:
The standard operating procedure describes in detail the possible breakdowns and the method of their rectification of centrifugal pumps.
3.0 RESPONSIBILITY:
The responsibility of breakdown rectification of centrifugal pumps lies with the staff of rank not lower than junior utility operator of maintenance department.
The responsibility of preparing, reviewing and approving the standard operating procedure lies with the Manager - Maintenance, Head of Production and Head of QAD respectively.
4.0 METHOD:
4.1 Possible problems:
4.1.1 Gland leak/seal leak.
4.1.2 Bearings damage.
4.1.3 Coupling damage/breakage.
4.1.4 Chocking of impeller/loosening of impeller.
4.2 Gland leak/seal leak rectification:
4.2.1 Carryout gland leak rectification as per SOP replacement of gland packing of pumps and reactors.Carryout the seal leak rectification as per SOP replacement of spares of mechanical seal unit of pumps.
4.3 Coupling damage/breakage:
4.3.1 Carry out rectification as per SOP replacement of damaged couplings/pulleys of reactors, pumps, motors and gear boxes.
4.4 Chocking of impeller/loosened of impeller:
4.4.1 Carryout the rectification of chocking of impeller/loosened of impeller as per SOP DECHOCKING OF IMPELLER & REPLACING CORRODED IMPELLER / REFIXING OF LOOSENED IMPELLER OF PUMPS.
4.5 Replacement of damaged shaft.
4.5.1 Isolate the equipment electrically.
4.5.2 Remove the guard.
4.5.3 Close the suction and delivery valves.
4.5.4 Open the suction cover, remove impeller and volute casing of the pump.
4.5.5 Remove mechanical seal if the pump is provided with mechanical seal.
4.5.6 Take out the shaft and replace it with new one.
4.5.7 Assemble the pump in the reverse order of dismantling.
4.5.8 Restore the power supply to the equipment.
5.0 RECORDING
The responsibility of recording the breakdown rectification in the history card as per SOP lies with the staff of rank not lower than maintenance Engineer.
Centrifugal pumps, engineering, gear boxes
