59/MID/AN

Repairs to 6cusec discharge 56 m head HC pump of pumping Unit No. 1 installed at LIS Ambaran . 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. Providing/ fitting of DE and NDE bearings (6310 and NU310) and bushes ( 2 nos.) in lieu of worn out ones. Fabrication of bearing brackets as per sample. Fabrication of glands and studs with nut. Fabrication of neck rings as per sample. P/F of check nuts ( 2 nos.) as per sample . Re-assembling of impeller shaft assembly and shifting back to site and placing it at its position and closing the top cover along with P/F of new nuts ,bolts , oil paper packing and studs coupling with motor. P/F of gland packing etc. . The job also includes repairing of delivery line by welding at the leaking portions. Testing the pump 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

Repair to 200 HP motor of pumping unit no. 1 installed at LIS Ambaran . The job involves dismantling the motor by unfastening the foundation nuts and bolts and also decoupling from the pump and disconnecting the electrical connections from the main supply.. Then complete dismantling of the motor involves extraction of rotor from stator followed by cleaning of stator and rotor using compressed air, organic solvent, CCL4 etc. to remove the dust particles /silt etc. 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. P/F of 6319 bearing. Assembling of the motor . Refitting the motor at its installed position and coupling with pump, 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

Repairs to 200 HP Starter of pumping unit of pumping unit no. 1 installed at LIS Ambaran . The job involves disconnecting the starter and then shifting the starter to the workshop through mechanical transport . The job involves complete replacement of worn out G.M Nuts and washers, bakelite strips, fingers, contacts moving and fixed as per sample. Replacement of tripping coil of required capacity, complete kit. Complete drainage of T.oil, Providing/Filling of fresh T.oil (10 Ltrs.).. Replacement of worn-out thimbles of cables etc. Shifting the starter to the LIS .Connecting power supply and testing at load. Complete Job includes cost of material, tools and tackles, labour charges transportation charges at site of LIS, Complete Job

NATIONAL ELECTRO-MECH COMPANY

G S ENGINEERING WORKS