MID/J/2024-25/94

Repair/replacement of worn out parts of 5cusec x 10m head pump of unit-2 along with other allied works at LIS Rathua.

Decoupling of 5cusec x 10m head HC pump of unit no.2 at LIS Rathua from the motor assembly and dismantling the pump from the base frame & from suction side/dismantling by way of cutting the rusted nuts & bolts with cutter. Carriage of the dismantled 05 cusec HC pump to the nearest roadside, using manual labour, head load, loading in transport vehicle, carriage to the workshop in the mechanical transport for repairs. Repair to 5 cusec horizontal casing pump set at workshop by way of dismantling and extraction of damaged internal parts. Providing, turning, rethreading & finishing to accurate size of new pump shaft as per specifications of old damaged pump shaft. Repair to the impeller by way of welding/brazing, machining, making key ways slots on the impeller and fitting of the same on the pump shaft. Providing and fitting of 2no.s new bearings on driving and non driving end of the pump as per sample, neck rings, 1no. shaft protection sleeve, bushes, new gland studs repair to bearing housing, gland plates and applying sufficient amount of grease to avoid excessive wear and tear, gland packing as per requirement. Repair to the bearing housing on driving and non-driving ends of pumping unit by welding turning and fitting of bush to make inner dia. of bearing housing suitable for fitment of bearings. Providing & fitting of new CI coupling set by way of machining for keyway on either side of shaft (motor and pump side) as per sample by way of resizing of holes. Job also includes Providing and fitting of new coupling nuts/bolts & rubber bushes. Complete assembling of pump set after carrying out necessary repairs. Dismantling of the damaged 40 H.P electric motor of pumping unit no-2 from base frame, pump & motor starter electrical connections. Repairs to rotor of motor by providing/fitting of new bearings (DE & NDE) after rebuilding of the rotor shaft and finishing to bearing sizes. Providing/fitting of bearing end cover plates. Complete greasing of the bearings and providing/fitting of side covers. Complete job including cost of material and labour charges. Shifting back to the LIS after carrying out necessary repairs at workshop and then fitting/reinstallation at the base frame, coupling with the motor by making proper alignment and testing on partial/full load .

Rebate on Old Parts

Repair/replacement of worn out parts of 5cusec x 10m head pump of unit-2 along with other allied works at LIS Rathua.

Replacement to the damaged components of the 200KVA voltage stabilizer of LIS Rathua. Job includes disconnecting all the electrical connections of the stabilizer both on LT transformer side and LT distribution panel side by way of removing rusted thimbles along with nuts and bolts. Shifting of the stabilizer to the nearest roadside by manual head load through stairs and loading of the same in the transport vehicle for further carriage to the workshop by employing hydraulic crane and manual labour at site. Replacement of the damaged components of the voltage stabilizer at workshop by way of removing its top cover for extraction of inner assembly from the casing sump. Providing and fitting of new 02no.s copper coils in place of damaged/burnt coils of requisite size and specifications, new insulation material and nuts/bolts, varnishing drying in hot air circulation. Lowering of the coils inside the casing. Also replacement to the damaged components of rotor switch assembly by providing/fitting of new set of brass bush rods for all individual phases on LT side. The job involves draining out the old transformer oil from the stabilizer and heating to de-moisturize it completely. Filling the heat treated transformer oil back into stabilizer and also providing/topping with 100 litres of fresh transformer oil. Providing and fitting of new top cover gasket, nuts/bolts and complete reassembling of the stabilizer at workshop. Shifting back the voltage stabilizer to the site. Unloading the same at site employing hydraulic crane/manual labour and shifting by manual head load into the pump room for re-installation. Reinstallation of the voltage stabilizer in the pump room by fixing all the electrical connections, providing/fitting of new thimbles, nuts/bolts. Testing of the 200 KVA voltage stabilizer on partial load and then on full load at site. Complete job including cost of materials, rebate on account of old copper scrap, skilled/semi skilled labour charges, hydraulic crane and tools and tackles required during the execution of the job.

Rebate on Old Parts

M/S UK MECH AND ELECT ENGG WORKS (BID ID -2230128)

R K ELECTRICAL MECHANICAL ENGINEERING AND FABRICATION WORKS (BID ID -2230175)