Upkeepment/Servicing and repairs of Electro mechanical machinery with allied works at LIS Miari and Thanger Chowdhrialla

Amount

LIS Miari Upkeepment of 250 KVA Electric Transformer installed at LIS Miari by way of disconnecting the Electric transformer from HT and LT connections, lifting it with the help of chain pulley block and tripod stand. Opening of the top cover by way of unscrewing the nuts/bolts using tools, tackles and manual labour. Checking of the internal assembly of electric Transformer, Heating of the Oil at site by using heating means to ensure moisture free oil and then topping up the Transformer oil with necessary required oil approx 80 lts. Re-fixing of top cover, nuts/ bolts and gaskets. Job further includes Providing/ fitting 3 No. HT bush rod assembly and 4 No. LT bush rod assembly by replacing the old worn out/rusted bush rod assemblies to make HT and LT sides spark free and restoring of all damaged connections and then making HT connections. Complete job at site includes cost of materials, labour charges of skilled and semi-skilled labour and hiring charges of tools and tackles as required during the execution of the job.

Servicing of 3 cusec x 38mm head horizontal casing pump set , 2no.s at LIS done by way of, de-coupling from the motor and. Extraction of internal parts by Dismantling the pump housing.P/F of new gland packing, nut bolts, rubber sealings after cleaning the gland bushes and gland plate sets, applying sufficient amount of grease including gland packing 4kg to avoid excessive wear and tear, P/f of 1 no. new bearings for unit no.I by extracting the rusted bearings from the bearing housing of 75 HP Motor DE Side and applying sufficient amount of greasing. Complete assembling of pumps and motors and its refitting back to its position at site for installation

Upkeepment of 2 nos. choked foot valves of 200mm diameter.by way of extracting the foot valves from the sump after disengaging from the suction pipes. The job involves the complete dismantling of the foot valves and replacement of leather washers. Cleaning the foot valves properly along with the strainers, adjustment of flaps and repair to hinge arrangements. Reassembling the foot valves and refitting it with suction pipes in the sump by providing and fitting of new rubber insulation sheets to all flanged joints and nuts and bolts. The job also includes the providing and fitting of 1 no 50 mm diameter CI Foot valve to the 2 HP mono block pump unit. The complete job includes the cost of material, hire charges of tools and tackles, labour charges etc. at place of site.

Servicing of 75 HP oil immersed ATS of pumping unit no. I and II of LIS Miari by way of extracting the damaged copper contact points both moving and fixed, thimbles, no volt coil, tripping system, overload relay and replacing the same with new ones. Repairs to moving mechanism by p/f of new sleeve. Providing/filling of 40 litres transformer oil for topping of both starters. The job includes cost of material, labour charges etc at site.

LIS Thanger Chowdhrialla Upkeepment of pumping machinery installed at LIS Thanger Chowdhrialla. The job involves servicing after dismantling 2 nos. 5 cusec discharge, 48m head HC Pumps and 120 HP Squirrel cage induction Motors, greasing to bearings of pumps and motors. Providing/fitting of new gland packings and air release valves and water lubrication pipes to HC Pumps. Draining of T.oil from 120HP starters and heating it to make it moisture free. Providing and topping up of 20litres of fresh T.oil in startres. The job also involves the cleaning of machinery to make it dust free. Job includes cost of material, labour charges required at site of LIS.

Upkeepment by Servicing/Repairs to 250 KVA voltage stabilizer of LIS Thanger Chowdhrialla by way of disconnecting of all electrical connections, dismantling its top cover using chain pulley block, extraction of inner frame, removal of 3No. coils, nuts & bolts etc. heating of 3 no. coil and T oil to make it moisture free after extraction from tank by drying it using blowers and electric heater at site and then varnishing by standard quality varnish. Desludging of the tank to make it clean by using suitable chemicals.Lowering the Voltage Stabilizer assembly in the tank, fitting the top cover by providing and fitting of new gasket sets, nuts and bolts.Providing and Filling of 40 litres fresh T.Oil in the voltage stabilizer tank. Making connections by cutting the damaged cable ends and thimbling them properly by p/f of new aluminium thimbles as per old sample. The job includes cost of material, hire charges of tools and tackles used and labour charges etc required at site of LIS.

GANPATI ELECTRICAL AND MECHANICAL WORKS

N B Engineering and Electric Works