MID/J/75

Repair/replacement of worn out parts of 5cusec x 10m head pump of unit-3 along with other allied electro-mechanical works at LIS Kukerian A) Decoupling of 5cusec x 10m head Horizontal split casing pump of unit no.3 from the motor assembly and dismantling the pump from the base frame. Carriage of the dismantled 5cusec pump set by using manual labour, head load to the nearest roadside, 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/fitting of new pump shaft by way of turning, rethreading & finishing to accurate size as per specifications of old damaged shaft. Making of new slots for feather keys. Job includes repairs to impeller by way of remetalling, machining, brazing, turning and finishing to accurate size including making of new key way of the same specifications. Providing and fitting of 2no.s new bearings on driving and non driving end of the pump as per sample, 2no.s neck rings, 2no.s shaft protection sleeves, new check nut, bushes, new gland studs 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 turning and fitting of bush to make inner dia. of bearing housing suitable for fitment of bearings. Complete assembling of pump set after carrying out necessary repairs. Shifting back to the LIS Kukerian 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. Job also includes providing and fitting of new coupling nuts/bolts & rubber bushes. Complete job includes cost of material and labour charges. B) Replacement of the wornout components of the 200KVA voltage stabilizer of LIS Kukerian. Job includes disconnecting all the electrical connections of the stabilizer both on LT transformer side and LT distribution panel side by way of removing old rusted thimbles along with nuts and bolts. Shifting of the stabilizer components to the nearest roadside by manual head load approx. 200mtrs and loading of the same in the transport vehicle for further carriage to the workshop by employing manual labour at site. Replacement of the wornout 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 02nos. new copper 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 replacements to the damaged components of rotor switch assemblies by providing/fitting of new set of brass bush rods for all individual phases on LT side. Providing/fitting of 250Amp MCCB in place of damaged one. Also providing/filling of 50 litres of fresh transformer oil. Providing and fitting of new top cover gasket and cover plate, 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 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 and tools and tackles required during the execution of the job

Rebate on Old Parts