Restoration of electro-mechanical components submerged in water and got damaged due to flash floods in river Dudhar Nallah at LIS Seen Thakran Intake in District Udhampur

Desilting of pump house filled up due to flash floods at LIS Seen Thakran Intake in district Udhampur. The job involves clearance of silt, sand, pebbles, wooden blocks and bushes etc. from inside as well as surroundings of the pump house by engaging manual labour and further disposing of the same at a suitable distance using manual labour with necessary tools & tackles. Job involves removing of old damaged and badly twisted CGI sheets from back and front side of the shed. Providing/fitting of 0.5mm minimum thickness new CGI Sheets of reputed make to cover an area of approximately 17 square metre on the back and front side of the shed The job involves carefully unfastening the torn/damaged sheets by way of unfastening/cutting the bolts/screws/hooks without damaging the MS angles of the erected structure. Cleaning of the MS angles and providing/fastening of new CGI sheets to the MS angle structure by p/f of bolts/screws/hooks in order to cover the open area adequately without leaving any open gaps between the sheets by way of making overlap joints at the edges of the sheets. Also fastening/bolting of the CGI sheets over the MS angle structure should be such that there is no loose gap left between the sheet and the angle structure. Job also includes fabrication of the door by p/f of CGI sheet of required size and MS angles of requisite size to replace the damaged door of the shed. Providing /welding of the hinges to the door and fitting/welding to the designated horizontal MS angle member of the shed structure with providing/welding of the proper locking/bolting mechanism for the door. Complete dismantling of 2 nos 20 H.P motors and 1HP Monoblock priming pump unit of LIS Seen Thakran Intake from installed position then extraction of rotors from stators followed by cleaning of stators and rotors using compressed air, organic solvent/CCL4 etc. to remove the dust particles /silt etc and drying the rotors as well as stators completely with hot air. Replacement of damaged/broken wedges, f-class insulation paper etc wherever required. Extraction of bearings from their housings and cleaning with a suitable chemical cleaner to remove silt/dirt from bearing housings. Varnishing the rotors and stators with good quality varnish in two coats and then drying by hot air process. Thereafter checking the IR value using megger meter. Providing and fitting of new bearings(6309C3) to the DE & NDE of 20HP motors after greasing properly and re-assembling the motors, re-installing the same on their original position at LIS Seen Thakran Intake. Repair/Servicing of 02 Nos 2.5 cusec discharge 10 metre head end suction pumps by decoupling the pumps from motors, suction and delivery lines and unfastening the foundation bolts. Dismantling the pumps by removing the bearing housings, body brackets, top cover housings and gland brackets. Taking out shaft impeller assemblies from the pump casing and proper cleaning to remove silt / dust material and P/F new set of bearings of both pumps at DE & NDE after cleaning bearing housings by way of flushing the old lubricant oil and Providing/filling of 1 litre fresh bearing lubricant oil conforming to requisite grade in each pump. Refitting of the shaft impeller assemblies and re-assembling the pumps by way of replacing the worn out gland packings, paper sheets, nuts and bolts. After servicing/repairs placing the pumps on base frame and tightening the foundation bolts. Assembling the pumps to suction and delivery lines by replacing the rubber flange joints, nuts and bolts. Coupling the pumps and motors after proper alignment/adjustment. Servicing to 50 HP Starter of Unit No. 1 installed at LIS Seen Thakran Intake by way of draining of muddy water filled in the starter and cleaning the oil tank, G.M Nuts and washers, bakelite strips, fingers, moving and fixed contacts and tripping coil. Providing/Filling of fresh T.oil 10 litre approximately. Servicing of 50A auto starter cum protection control panel of Unit No 2 by way of disconnecting the electrical connections. Cleaning of the panel body to remove the mud/silt deposited inside it by using manual labour. Removing of the damaged MNX50 contactors - 03 nos as well as other accessories. Replacement by way of providing /fitting of new MNX 50 contactors-03 nos, Digital Voltmeter-01 no., Digital Amperemeter-01 no. and light indicators of reputed make. Cleaning the accessories and connecting wires / leads etc with suitable chemical cleaner and tools, thereafter drying using hot air so as to make them dry and then refitting back. Replacement of damaged main supply MCCB by p/f of new 200A MCCB of reputed make. Cleaning, servicing and drying of all the control cables. Making electrical connections of both the pumping units after crimping ends of the 10mm2 copper cablesand 3.5 core 70mm2 aluminium cable and thimbling them properly by p/f of new thimbles along with insulation as per requirement and connecting with MCCB, starters and motors. Repair to 200mm dia foot valves of Unit no 1 & 2 by way of dismantling both from the suction lines and dragging/fishing out from the river by using manual labour and tools & tackles, bamboos, ropes etc. Dismantling of the foot valves at site and removal of mud/debris deposited inside them and cleaning them properly and replacing the rubber joints and checking for their smooth operation manually. Refitting of the foot valves to the suction lines by using new nuts, bolts, washers and rubber flanges and checking for its leaking. Testing of both the pumping units along with electrical equipments on no load and then on full load. Complete job includes cost on account of material, skilled and unskilled labour charges, transportation & carriage charges and hire charges of tools & tackles required for the execution of job inclusive of all taxes as applicable. Complete Job includes any other work that may arise during the course of servicing.

R K ELECTRICAL MECHANICAL ENGINEERING AND FABRICATION WORKS

M/S Tawi Engineers