73/MID/AN

Strengthening of 3.5 cusec discharge 26 mtr. Head H.C pump no. 01 at LIS Trooti . 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 to 250 Kva voltage stabilizer installed at LIS Trooti by means of disconnecting of the Voltage stabilizer from the main power supply (Incoming and Outgoing cables) .Shifting of the voltage stabilizer to the main road by using manual labour and suitable tools/tackles. Loading into mechanical transport for shifting the equipment to the workshop. Unloading in the same manner at workshop. Opening and removing of the panel, loosening /dismantling of the top cover, nut and bolts. Lifting of inside transformer assembly with the chain pulley block for extraction of the complete unit. Dismantling/Extraction of the damaged /burnt coils ( 2 nos.) by way of the dismantling of the core assembly and extraction of the burnt copper wire with the help of manual labour and suitable tools/tackles. Rewinding of the two phase by using new copper wire of the superior quality. Recapitalization of the rotor assembly by way of p/f of new components, replacing all the damaged /burnt components. P/F of new panel accessories to panel of stabilizer by replacing the damaged with the new one. The job involves P/F of 1 No’s volt meter (Output Meter), Meter phase indicator, phase indicator lamps. Boiling of the T.oil in stabilizer by draining it out of the tank. Heating with heater coils to make it completely moisture free, filling it back after complete cleaning and drying of tank. Providing filling of 100litre t.oil to make up for the deficit. Reinstallation of the stabilizer frame with transformer assembly. Lowering of complete unit in tank after p/f of shock proof gasket and body with nuts/bolts and shifting back the equipment from the workshop to the site of LIS. Unloading at LIS by using mobile crane and skilled labour. Installation inside the LIS by using specified tools and tackles .Connecting power cables by p/f of new thimbles of the requisite capacity and testing on load . Complete job includes the cost of material, labour charges, transportation charges, other tools / tackles required at site.

Strengthening of 75 HP 3 phase induction motor installed at LIS Trooti. The job involves dismantling of motor from its installed position after disconnecting the power supply of all three phases. Dismantling the motor by unfastening the foundation nuts and bolts and also decoupling from the pump. Lifting the motor out of the pump house with chain pulley block with proper care to prevent any damage. Shifting the motor from LIS to workshop with the help of manual labour. mechanical transport to the workshop . Complete dismantling of the motor, extraction of rotor . P/F of both driving end and non driving bearing as per sample. Extraction of burnt winding from the stator, cleaning of stator with petrol .P/F of new winding wire of suitable gauge & size in the stator, varnishing the stator winding with superior quality of varnish. Drying the stator winding with hot air circulation process. Assembling of the motor and shifting back to L.I.S. Refitting the motor at its installed position and coupling with pump by way of lowering it with the help of chain pulley block, making of electrical connections, alignment with pump , testing of motor on full load. Complete job includes the cost of material, labour charges, hiring charges of tools & tackles, transportation charges. Complete job

G S ENGINEERING WORKS

NATIONAL ELECTRO-MECH COMPANY