156/MID/AN

Repairs to 10 cusec discharge 33 m head H.C pump no. 01 at LIS Gurha-I . The job involves de-coupling of pump from the motor and removing the top cover, extraction of shaft and impeller assembly together with bearing bracket and shifting to the workshop by using manual labour and mechanical transport. Complete dismantling of impeller shaft assembly . Repairs to pump shaft at damaged spots and rebuilding of impeller using good quality electrodes. Turning/machining of rebuild impeller and pump shaft on lathe machine for proper size Providing/ fitting of 2nos. bearings ( 6312) and 2 nos. bushes per the sample . Fabrication of glands and studs with nut. Re-assembling of impeller shaft assembly and shifting back to site and there after placing at proper position, placement of oil seal and closing the top cover along with P/F new nuts,bolts and coupling with motor by providing /fitting of new tyre coupling as per sample. P/F of gland packing etc.and testing on no load. The Job includes cost of material, labour(skilled and unskilled), transportation charges, hire charge of tool and tackles .Complete job

Repair to the leaking portion of 300 mm dia suction pipe of pumping unit no. 2 at LIS Gurha-1. The Job involves dismantling of the suction pipe by using manual labour and cutting the rusted nuts and bolts by gas cutter, suitable tools and tackles . There after repairs to suction pipe by way of welding of leaking section in double layers from all around and providing / welding of M.S plate collar (suitable thickness) as overlap joint for strengthening. Welding with one root layer and two additional layers with 3.14 mm and 4mm I.S marked M.S welding electrodes to fill the grooves between the pipe, welding to be done by specialized skilled workman , handling with proper tools , tackles, employing semi-skilled workman and suitable tools /tackles. The weld should be spurt and gap free and to be done with good quality electrodes and slag material to be chipped off. Fitting of suction pipe fastening the flanges by using new , bolts and washers.Testing for any leakages. Complete job includes cost of material, hire charges of welding set and diesel generator set, labour charges, manual handling, transportation charges and hiring charges of tools and tackles. Complete Job

Impregnation of 250 HP Induction Motor installed at LIS Gurha-1 . The job involves disconnecting all electrical connection decoupling the motor from the pump, removing from the base plate . Dismantling the motor ,extraction of the rotor and bearing. cleaning of rotor and stator winding with petrol and chemical cleanser. Cleaning of dust/carbon etc from the stator with the help of compressed air/ CCL4/organic solvent . Thereafter applying Dr. Beck. Compound on stator winding by spraying impregnation process and drying the same with hot air circulation process. Checking IR value of the winding . Assembling of motor. Fitting the motor over the base frame by providing / fitting nut ,bolts, washers etc., making of electrical connections, replacing worn out nuts, bolts and thimbles for the electrical connection. Alignment & coupling with pump. Complete testing of the pumping unit. Job includes cost of all material, transportation charges, head load and labour charges for skilled / semi skilled labour, hire charges for tools & tackles at the LIS. Complete Job

Repair of foot valve (300mm dia) of pumping unit no.1 installed at LIS Gurha-I. The job involves disconnecting / dismantling of the foot valve assembly from the suction pipe by deploying manual labour and allied tools & tackles. Shifting / transporting to the workshop. Cleaning by washing with water to make the foot valves completely silt free.. Dismantling of damaged / worn-out foot valve mechanism with flap & rings .Fabrication of new flap along with the flap plate and hinges.. Providing / fitting of new rubber washer cut as per size of the flap plate. Reassembling the foot valve and transporting back to the installation site at LIS. Fitting the valve to the suction line with replacement of damaged rubber gaskets of flanged joints and worn-out nuts, bolts etc. Complete job including cost of material, labour charges, transportation charges and hire charges for tools & tackles. Complete Job

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