BDPS/V/NEW/SLP1/2025

Part-A + Part-B

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BoQ_Ver3.0

testing

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NUMBER #

Preliminary checking and testing of IR value, insulation leakage of stator & rotor, cracks of porcelin bushings, conn. Terminal leads, fibre glass terminal blocks and rotor end ring joints etc, before to detect the fault for 3.3 KV /6.6 KV sq. cage induction Motor.

Removal of worn out DE & NDE side bearing using proper tools & tackles without damaging any accessories of stator and rotor with special and arrangement.

DRIVING END HOUSING Under cut of damaged DE side bearing housing portion, metal deposition on die under cut surface, machining, turning & polishing with proper tolerance according to the size of bearing outer diameter. Work should be completed in all respects up to the satisfaction of E.I.C.

NON-DRIVING END HOUSING Under cut of damaged NDE side bearing housing portion, metal deposition on the under cut surface, machining, turning & polishing with proper tolerance according to the size of bearing outer diameter. Work should be completed in all respect upto the satisfaction of E.I.C.

DRIVING END SHAFT JOURNAL Under cut of damaged DE side bearing journal portion, metal deposition on the under cut surface, machining, turning & polishing with proper tolerance according to the size of bearing bore. Work should be completed in all respects up to the satisfaction of E.I.C.

NON-DRIVING END SHAFT JOURNAL Under cut of damaged NDE side bearing journal portion, metal deposition on the under cut surface, machining, turning & polishing with proper tolerance according to the size of bearing bore. Work shoul d be completed in all respects up to the satisfaction of E.1.C.

DRIVING END BEARING LOCKING ARRANGEMENT Under cut of damaged DE side bearing locking portion, metal deposition on die under cut surface, machining, turning & polishing with proper tolerance according to the size of bearing outer diameter. Work should be completed in all respects up to the satisfaction of E.I.C.

NON-DRIVING END BEARING LOCKING ARRANGEMENT Under cut of damaged NDE side bearing locking portion, metal deposition on the under cut surface, machining, turning & polishing with proper tolerance according to the size of bearing outer diameter. Work should be completed in all respect upto the satisfaction of E.I.C.

Procurement, supply, fitting & fixing of DE side bearing, Deep Groove Ball Bearing, Single Row, Bore Dia: 170mm, OD: 310mm, Width: 52mm, Weight: 17.5 kg, Max. RPM- 3800 rpm, Make: SKF/FAG, model no: 6234/C3

Procurement, supply, fitting & fixing of NDE side bearing, Spherical Roller Thrust Bearing, Single Row, Bore Dia: 170mm, OD: 340mm, Width: 103mm, Weight: 44.5 kg, Max. RPM- 1900 rpm, Make: SKF/FAG, model no: 29434E

Taking out carefully the slip ring set of the induction motor by removing the connection from the LRS unit and dismantling the top cover and bearing

First remove all the insulated sheath of Ring unit and gradually open out individually from its base. Then clean the slip-ring base unit thoroughly by heating arrangement and open out the damaged insulation layer upto the fully bare condition. After the metalizing of the damaged portion of the base unit of slip-ring it is to be sent to machine shop for alignment and smoothing of the outer & inner surface along with making key slots for making the locking arrangement with the motor shaft. After proper Machining & polishing the outer & inner surface of slip-ring unit and lapping it with 6 mm insulation sheet to its base and casting it whole with the insulation to insulate each phase of the rotor properly. After completion of insulation arrangement, slip-ring unit will be fit and fix its base individually maintain proper alignment of each ring as per motor design. The rings will be locked individually to its base. Finally insulate the whole unit by Dr Beck varnish to insulate from dirt & dust before re-alignment of complete slip-ring unit assembly for the last time.

Refitting the Slip ring set over the motor with all its necessary coupling accessories to its position including fifling fixing with bearing housing, non-reversable ratchet unit and pump shaft with proper tolerance and clearance and reconnection of terminal points of the completion of necessary work and satisfactory 2 hours trial run of the pump as per direction of E.I.C.

Re-assembling the 6.6 KV Slip ring induction Motor including placing the rotor into the stator, re- fixing the coil guard, pre-fixing the motor covers, terminal leads, terminal blocks, cable entry box, terminal box after completion of repairing works.

Engagement of specially trained certified HT professional for necessary execution of the work & testing of entire system, circuits, motor power & control circuits, sensor circuits etc complete in all respect as per the direction of EIC.

Estimated amount

GRAND TOTAL [Rs.]

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