MID/AN/18

Repairs to 4 cusec discharge HC Pump no. 01 installed at LIS Patyari. The Job involves decoupling & dismantling of pump for the purpose of its repair. Taking out impeller shaft assembly and Shifting of the pump shaft assembly by manual / mechanical means to workshop. Separating shaft, impeller and bushes. Repair to key ways. Rebuilding of impeller by using good quality electrodes. Repairs to pump shaft at damaged spots by using good quality electrodes. Turning/machining of impeller and pump shaft for proper size. Providing/fabrication of one no. Sleeve as per sample. Making necessary repairs to bearing housing. P/F of new set of bearings (3308 and 3309) as per sample. Assembling of the pump parts. Carriage / transportation of the impeller shaft assembly back from workshop to the site of installation at LIS. Fitment of pump along with replacement of rusted / damaged studs, gaskets, alignment setting at its position, p/f of gland packing, greasing work etc. Aligning & coupling the pump & motor. Complete testing of the pumping unit on full load. Job includes cost of all material, transportation charges, head load and labour charges for skilled/semiskilled labour, hire charges for tools & tackles. Complete Job

Repairs to 200 mm foot valve assembly of pumping unit no. 1 installed at LIS Patyari. 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. Dismantling of damaged foot valve mechanism. Fabrication of new flap plate as per the sample 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 line 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.

Repairs to 250mm dia reflux valve at LIS Patyari. 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. 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 . Testing on load. Complete job includes the cost of material, labour charges, transportation charges etc. Complete Job

Repairs to 60 HP 3 phase induction motor no. 01 installed at LIS Kah. 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. Shifting of the motor to workshop by mechanical transport. 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. Assembling of the motor. Shifting the motor back to LIS. 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 60 HP oil immersed starter no. 01 installed at LIS Kah. The job involves disconnecting the starter and shifting to workshop by mechanical transport. There after dismantling of starter at workshop and replacement of worn out G.M nuts and washers, copper fingers, contacts,(moving and fixed) as per sample. Shifting the starter to LIS. 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

Chargotra Trading Co.

R K Electrical and Engineering Works