66/MID/AN

Strengthening of 07 cusec discharge 21 m head H.C pump no. 01 at LIS Aryanpura . 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 assembly. Rebuilding of shaft and impeller by welding by using good quality electrodes. Thereafter turning /machining of rebuild impeller and shaft on lathe machine for finishing and proper size . Providing/ fitting of 2nos. DE and NDE bearing and bushes (2 nos.) in lieu of worn out ones. Fabrication of glands and studs with nut. Repair to bearing brackets. Re-assembling of impeller shaft assembly and shifting back to site and there after lowering at proper position, placement of oil seal and closing the top cover along with P/F new nuts,bolts and studs coupling with motor. P/F of gland packing etc.and testing on no load. The Job includes cost of material, labour(skilled and unskilled), loading charges, hire charge of tool and tackles, to and fro carriage charges. Complete job

Strengthening of 250KVA Transformer installed at LIS Aryanpura. The job involves disconnecting all electrical connections and Lifting the transformer from its installed position and loading in the vehicle and shifting to workshop using manual labour and mech. Transport including lifting machinery . Unloading at workshop . Disassembling the transformer at workshop by unscrewing the bolts of top cover and extracting the body with chain pulley block. Rewinding its H.V. & L.V. coils with superior aluminium wire of requisite size/gauge. Replacement of damaged HT/LT bush rods with the new bush rods as per sample. Providing /Fitting of new gasket, L.T. terminal plate, nuts, bolts, etc. Cleaning of the tank and drying it. Providing/Topping up of 85 litre transformer oil and heating the oil to make it moisture free. Lowering the windings back in the tank Assembling the transformer by tightening all nuts, bolts and using oil packing sheets wherever necessary. Loading in the vehicle and shifting back to site . Job includes placing of transformer on the foundation with the help of crane using skilled manual labour. . Fitting the transformer and restoration of electrical connections. Testing & commissioning on full load.. Complete job including cost of material, skilled and semi-skilled labour charges, loading & unloading at both ends and transportation charges as per site conditions of LIS.

Strengthening of foot valve (300 mm dia ) of pumping unit no.1 installed at LIS Aryanpura. 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 them completely, carrying out necessary repair works on the valve surfaces 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. 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 valves to the respective suction lines 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

Repair /strengthening of 100HP oil immersed star delta starter of pumping Unit No.II, installed at site of LIS Aryanpura by complete replacement of worn out G.M nuts and washers, copper fingers, contacts,(moving and fixed) as per sample. Drainage of T.oil. Proper cleaning of tanks by removing the deposited carbon and other deposited material. Heating of T.oil to make it completely moisture free. Providing/filling of T.oil 10 ltrs. Approx. Replacement of worn out/burnt copper thimbles of cables by p/f of new thimbles duly crimped and taped. Connecting power supply & testing on load. Complete job includes the cost of material, labour charges and other misc. charges at site. Complete Job

G S ENGINEERING WORKS

NATIONAL ELECTRO-MECH COMPANY