18/MID/AN

Strengthening / repair of 4 cusec discharge / 8metre head horizontal centrifugal pump of pumping Unit No. II installed at LIS Lehrian. Job involves removing of top cover of the HC pump, extracting the internal impeller assembly together with bearing brackets and shifting the same to workshop by using mechanical transport. Complete dismantling of the impeller assembly. Fabrication of pump shaft and rebuilding of impeller as per the actual size .P/f of 1-No bush, 2-No bearings as per sample. Fabrication of glands and studs with nut. Fabrication of neck rings as per sample & shifting back to L.I.S. Lowering and Fitment of impeller/ shaft assembly in the pump at proper position & closing the top cover. Setting the foundation by means of replacement of old damaged studs. Job also includes replacement of nuts/bolts of the existing coupling pulley as per existing sample, gaskets, greasing work etc. Thereafter coupling with motor, alignment setting, testing of pump on load. Complete job includes the cost of material, labour charges, to and fro carriage charges, hire charges of tools and tackles etc. Complete Job

Complete rewinding of 20HP motor of unit -1 installed at LIS Lehrain by way of dismantling of motor from its installed position. Shifting of motor from site of LIS to workshop by means of mechanical transport. Complete dismantling of motor, extraction of rotor, broken/worn-out bearings. Extraction of damaged/burnt winding, wedges, insulation paper etc. from the stator. Cleaning of dirt/dust/carbon etc from the stator with the help of compressed air/ CCL4/organic solvent .P/F of new winding wire of suitable gauge & size in the stator with requisite no. of turns per loop along with wedges and F-class insulation. Thereafter applying Dr. Beck. Make compound on stator winding by spraying impregnation process and drying the same with hot air circulation process. Checking IR value of the winding with the help of megohmmeter. Assembling of the motor, p/f of 1-No new bearings (DE) as per sample, fabrication and p/f of new terminal plate replacing damaged one and shifting back to site of L.I.S. Refitting the motor at its installed position and making of electrical connections, alignment with pump by p/f of new coupling pulley as per existing sample, testing of motor on full load. Complete job includes the cost of material, rebate on old copper scrap, labour charges, hiring charges of tools & tackles, loading/unloading charges, to & fro transportation charges. Complete Job

Reconditioning/ strengthening of oil immersed star delta starter 20HP of Unit No.1 & 2 at LIS Lehrian by complete replacement of worn out G.M nuts and washers, copper fingers, contacts( moving and fixed) as per sample. Drainage of T.oil and heating it to make it completely moisture free. Proper cleaning of tanks by removing the deposited carbon and other deposited material. Replacement of worn out copper thimbles of cables by p/f of new thimbles duly crimped and taped. Connecting power supply & testing commissioning. Complete job includes the cost of material, labour charges and other miscellaneous charges. Complete Job

Strengthening of 250 mm foot valve assembly of pumping unit no II installed at LIS Lehrian. 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. After drying completely, carrying out necessary repair works on the valve surface and flanged joints by welding using good quality electrodes. Dismantling of damaged / worn-out foot valve mechanism with flap & rings etc. Complete repair to the damaged flap seat, flaps and hinges etc. Carrying out repairs to flap seats etc as per requirement of each footvalve. Providing / fitting of new leather 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 respective suction line with replacement of damaged rubber gasket of flanged joint and worn-out nuts, bolts etc. Complete job including cost of material, labour charges, transportation charges and hire charges for tools & tackles. Complete Job

Repair / Strengthening of 100Ampere L.T.control panel installed at LIS Lehrian by disconnecting the power supply and replacement of the damaged MCCB with the new MCCB of requiste capacity. The job further involves replacement of contactors with requisite current carriage rating contactors, single phase panel and timer relays & panel wiring. Providing / fitting of new panel accessories i.e. push buttons, HRC fuses, fuse indicator lamps etc as per requirement. Replacement to copper cables connecting the panel to the starters by providing / fitting of copper cable , thimbles of suitable rating duly crimped and taped etc. Complete job with the cost of the material, transportation charges and skilled / semi skilled labour charges at the site of LIS. Complete Job

Strengthening of Sluice Valve of pumping unit I installed at LIS Lehrian. The job involves dismantling of sluice valve from its installed position by way of unfastening/cutting of all rusted nut & bolts with the help of gas cutter/suitable tools &tackles and shifting to workshop. Complete dismantling of sluice valve into body and bonnet .Extraction of stem rod with nuts and flap. Fabrication of new stem rod nut as per the size of the old stem rod. Fabrication of new glands as per sample .Making of proper seat for resting of flap. Complete assembling of sluice valve and providing of new gland and rubber packing .Shifting of valves to the site of LIS and reinstallation by P/F of new nut, bolt and washer replacing all worn out nuts/ bolts. Testing and commissioning. Complete job includes the cost of material, labour and transportation charges to and from the LIS. Complete Job

Repair/ Strengthening of Reflux valve (200mm dia) of pumping unit no.1 installed at LIS Lehrian . The job involves dismantling of the reflux valve by way of cutting of the rusted nuts and bolts with the help of gas cutter, removing of flap. Fabrication of new flap and bushes 2 Nos. as per sample . Dismantling of shaft from both sides of flap and fabrication of new shaft as per the actual size . Fitment of reflux valve and fitting of new nuts, bolts and washer in place of worn out nuts and bolts. Complete job includes the cost of material, labour charges, transportation charges etc. Complete Job .

TRIKUTA ELECTRICAL AND MECHANICAL WORKS

BEE AAR ENTERPRISES