Repairs rewinding to 250 kva electric transformer installed at LIS Kothey parlah and fabrication and installation of D15 Escape gate at RD 7650 to provide water in Defense ditch on international border installed at Arnia and Changia gate.

Amount

Repairs/ rewinding to 250 kva electric transformer installed at LIS Kothey parlah.

Shifting of 250 kva transformer by way of disconnecting of the electric transformer from the input and output power connections, lifting of electric transformer from its installed position by using manual labour, crane and then shifting to workshop by using carriage vehicle. Repairs to 250 kva transformer installed at LIS Kothey Parlah by way of dismantling of the transformer at workshop and extracting out the damaged coils, LT bushes, HT bushes, HT bush rods, LT bush rods and gasket. Repairs to the cooling fins of transformer by welding damaged and leaking portions. Rewinding of three number HT legs coils/ 12 number coils with standard gauge wire with proper insulation & taping. Reconditioning of three no’s LT leg coils using quality insulation material. Repairs to core of transformer by replacing the flashed core material. Heating to repaired transformer in oven to get required meager value. Properly cleaning the oil tank with scrubbers to remove all carbon deposits. Lowering of the coils inside the sump of the transformer. Providing and fitting of LT bush, HT bush, LT bush rods and HT bush rod sets, new insulator, and sundry items. Refitting of the top cover of transformer by providing and fitting of new gasket sheet. Providing/ filling of 300 liters of fresh transformer oil in oil tank. Testing the continuity of each phase and secure all connection. Shifting back after carrying out repaired transformer to site. Complete job includes cost of material, installation charges and skilled labour charges ,loading and un-loading of transformer at LIS kothey parlah and workshop, carriage charges of vehicle (to & fro), testing on no load/ full load , tools & tackles, hire charges of crane.

Rebate on Old Parts

Fabrication and installation of D15 Escape gate at RD 7650 to provide water in Defense ditch on international border installed at Arnia and Changia gate.

Fabrication of gate- I on D15 Escape gate at RD 7650 to provide water in Defence ditch at International Border ( 3 ft x 3 ft), to be installed at Arnia, by way of dismantling of damaged old gate lifting mechanism from the supporting channel and disconnecting the stem rod from the leaf structure then extracting out the damaged/worn out gate leaf structure with the help of manual labour using tools and tackles, chain pulley block and tripod/hydra crane after removing accumulated mud/silt around the gate leaf. Carriage of gate structure along with winch machine and stem rod to the road with the help of manual labour using tools and tackles. Loading in mechanical transport and then carriage to workshop. Fabrication of leaf structure of size 3 ft x 3 ft (approx) using the ISMC 75channel size with vertical &horizontal cross members for support by way of cutting /welding using superior quality electrodes. Providing and then welding the MS sheet of 4/5mm thickness on the frame of channel structure. Also making of provision for stem rod attachment with 2 no. L-shaped MS Clamps. Providing, fabrication and fitting of 1 no. stem rod MS bar of length 6 ft approx and then turning, threading, finishing to the original size .Fabrication, providing & fitting of 02 Ton capacity manually operated, worm gear type winch machine along with base plate .Oiling and greasing the gear and bearings mechanism before fitting. Providing and fitting of rain pipe over the winch machine to secure the stem rod and machinery. Loading the gate structure along with winch machine on the mechanical transport for carrying to site of installation. Unloading the gate structure at road side then shifting to the site of installation. Installation of gate structure by way of lowering the leaf structure into the sliding grooves using manual labour, tools and tackles using chain pulley block and tripod/crane. Drilling requisite no. of holes in hoisting channels at site. Fitting of winch machine on the supporting channel and connecting the stem rod to the leaf structure after ensuring the proper alignment/gravity of the gate structure. Complete painting of gate structure with coats of red oxide primer and superior quality enamel paint ( Asian paints/ Kansai Nerolac paints/ Berger paints). Complete job includes cost of material, transportation charge, labour charges and testing for its smooth operation at site, cost of sand bags for stopping the flow of water in escape channel during the period of execution of work. Note:- The tenderers are requested to visit the site and quote the rate as per site conditions. Any modifications/ alterations of the job, absolutely necessary if required at the time of execution may be done as per actual site conditions. Changia gate I ( 4 ft x 3.9 ft) :- Replacement of Changia gate -I by way of dismantling of damaged stem rod from the gate, completely dismantling of winch machine and stem rod from the gate structure. Fabrication, Providing and fitting of 2 ton capacity manually operated, worm gear type winch machine with base plate of suitable size and one number stem rod treaded along its length for up and down movement of gate. Job includes drilling of holes on top hoisting channels, base plate for fixing winch machine and stem rod. Connecting the stem rod with leaf of gate with bolt and nut. Properly greasing of bearings and gears with quality grease. Checking for up and down movement of gate. Fabrication of leaf structure of size 39 inches x 45 inches (approx) using the ISMC 75channel size with vertical &horizontal cross members for support by way of cutting /welding using superior quality electrodes. Providing and then welding the MS sheet of 4/5mm thickness on the frame of channel structure. Also making of provision for stem rod attachment with 2 no. L-shaped MS Clamps. Complete painting of gate structure with coat of red oxide primer and superior quality enamel paint ( Asian paints/ Kansai Nerolac paints/ Berger paints). Complete job includes cost of material, transportation charge, labour charges and testing for its smooth operation at site, cost of sand bags for stopping the flow of water in escape channel during the period of execution of work. Note:- The tenderers are requested to visit the site and quote the rate as per site conditions. Any modifications/ alterations of the job, absolutely necessary if required at the time of execution may be done as per actual site conditions.

Rebate on Old Parts

GANPATI ELECTRICAL AND MECHANICAL WORKS

N B Engineering and Electric Works