MID/AN/122

01. Repair / Overhauling 93 mtrs. head, 0.70 cusec discharge, Pump no 01 at L.I.S Langer by way of Dismantling of pump and motor from the base plate. Dismantling the pump. Replacement of gland sleeve, Chuck nut, Neck ring, locking, cotter, gland bracket, bearings etc. as per sample. Rebuilding / reconditioning of impeller and impeller shaft by metalling with high class rod at all worn out portions and then machining turning, finishing to true size along with repairs reconditioning of key ways of impeller and impeller shaft, also necessary repairs to bearing housing and gland . P/F of gland packing and sheet joints. Job includes Dismantling the 50 H.P motor by separating side covers, extraction the rotor from the stator. Cutting of damaged coils of stator and extracting out of slots, complete cleaning of slots and fixation of simulation material in slots, complete rewinding of the coils of stator with high class material inserting then into the slots of stator. Complete varnishing of motor and then heating the stator with the help of oven etc. Complete cleaning of Rotor of the motor . P/F of new sleeves on the side covers with turning, making to bearing size and P/F of new bearings and then assembling the motor. Providing & fitting of new star coupling of L-190 along with its bush. Assembling the complete unit on the base plate & fitting the suction and delivery side pipe after P/F of nuts, bolts, washers & gasket in place of worn out /damaged after then testing the pump on load. It includes charges for testing, commissioning, disengaging and refitting, installation of pump. Qty. 01 Complete Job. 02. Providing & fitting of 4 inches Dia. foot valve by way of extraction of suction pipe & cutting of approx 2 feet length 4 inches dia. damaged pipe and welding the same length piece of pipe with one end having threads for installation of Foot valve on it . Again installing the suction pipe to the pump after P/F of nuts, bolts,washers & gasket in place of worn out /damaged . job includes the cost of material, labour charges for skilled and semi-skilled workers for execution of job /handling the components with hire charges for deployment of tools and tackles at site etc. Qty. 01 Complete Job. 03. To & fro shifting the damaged pump & motor manually from L.I.S. Langer through head load to road side at a distance of Approx. 0.5 km & then to work shop through mech. transportation & then from workshop to L.I.S Langer. Qty. 01 Complete Job. 04. Repairing of Voltage Stabilizer of 100 KVA capacity installed at LIS Langer by disconnecting of Voltage Stabilizer from main power supply at LIS Langer. Opening and removing top cover cum panel of stabilizer,by loosening top cover after untightening rusted nuts and bolts by using gas cutter. Extraction of damaged windings of 01 no. coil out of oil tank and transport that coil to the workshop. Complete rewinding of the coil using copper wire of superior quality. Placing these rewinded coil in oven for sufficient time to remove moisture from it. Repairs to the regulators of the stabilizer by dismantling of the regulator from frame. P/F of new Bakelite plate of suitable rating and thickness. Boring and finishing of plate as per sample of the regulator and P/F of new contacts G.M. duly faced and turned for 8 Nos. tapings/points connecting leads & checking with the meters. Draining out the oil from the tank and putting in the barrel and then heating with the heater coils completely for two to three days to make it completely moisture free, cleaning & drying of the tank and refilling with boiled oil. Also topping up with 90 ltrs. of transformer oil. Re-fitting of stabilizer frames and coils with regulators after necessary updating, jobs including insulations of wire strips. Connecting regulator & transformer by replacing old worn-out insulation with new and P/F of sleeves. Lowering complete unit in tank after P/F of leak proof gasket and body bolts,nuts and washers. Connecting power cables and testing commissioning etc. Job included charges for material, transportation charges, charges for skilled & semi-skilled labour etc.Qty. 01 Complete Job.

M/S RAGHUNATH MECHANICAL AND ELECTRICAL ENGINEERING WORKS (BID ID -2347364)

NATIONAL ELECTRO-MECH COMPANY (BID ID -2347932)