repairs to 250KVA Voltage stabilizer and other electrical equipments along with allied works at LIS Miari.

Amount

Replacement of the worn out components of the 250 KVA voltage stabilizer of LIS Miari. Job includes disconnecting all the electrical connections of the stabilizer both on LT transformer side and LT distribution panel side by way of removing old rusted thimbles along with nuts and bolts. Shifting of the damaged components of voltage stabilizer after by way of removing its top cover for extraction of inner assembly from the casing sump tank using skilled and semiskilled labour to the nearest roadside by manual head load and loading of the same in the transport vehicle for further carriage to the workshop by manual labor at site. Repair/Replacement of the worn-out components of the voltage stabilizer at workshop by Providing and fitting of new 02 nos. copper coils of requisite size and specifications, new insulation material and nuts/bolts, varnishing drying in hot air circulation. Back carriage of the repaired coils along with components materials and 300litres of T oil (provided by department) to the site of installation using mechanical transportation and head load using manual labour upto the pump house. Lowering of the coils inside the casing. Also, replacements to the damaged components of rotor switch assemblies by providing/fitting of new set of brass bush rods for all individual phases on LT side. The job involves providing/fitting of 01no. voltmeter. Job also includes plugging the leakage by way of welding at leaking spots and then draining out the old flashed T Oil from the voltage stabilizer and heating to remoisturize it completely, cleaning and de-moisturizing of the stabilizer casing, providing and filling of fresh transformer oil 300 liters to be provided by department after heat treatment and filtration of old T-oil. Providing and fitting of top cover gasket, nuts/bolts and complete reassembling of the stabilizer at workshop. Shifting back the voltage stabilizer to the site. Reinstallation of the voltage stabilizer in the pump room by fixing all the electrical connections. Testing of the 250 KVA voltage stabilizer on partial load and then on full load at site. Complete job includes cost of materials after considering the rebate on account of old scrap copper, hire charges of machinery/transportation, skilled/semi skilled labour

P/F of 70 sq mm 3 core PVC sheathed Al cable of 35 m length by replacing the old burnt cables for 2 No. 75 HP motors installed at LIS Miari. The job involves fitting of Al cables from LT Panels to Starters of both the units, fitting the Al cables cut into appropriate legths as per requirement from panel to each ATS after preparing the ends of cables with proper thimbling with tools. Further preparing both ends of 3 core cables by thimbling the appropriate lengths as per site requirement and connecting one end to starter of each unit and other end with motors of both units. The job involves cost of materials, skilled labour and testing commissioning at site.

strengthening of the shutter locking arrangement by providing and fitting of 2 no. Locking mechanism by way of Digging of the earth of size (0’. 8” x 2’.0”) of 4’.7” in length for creation of platform for anchoring the center locking mechanism under the shutter using tools and tackles and manual labour, extraction of soil and dumping it away from the pump room. Filling the plinth/platform of size (0’. 8” x 2’.0”) for a length of 4’.7” with concrete mixture(1:2:4) prepared at the site. The job also involves embedding the part of lock mechanism inside the cement concrete mixture at appropriate spot, for strengthening the position also welding it by angles to the bottom of shutter guides or another appropriate suitable spot. Welding the other half of center locking on the appropriate spot on the shutter with good quality welds. Curing of the cement concrete mixture for five days. The job also includes retrofitting the damaged window by welding it with angles at the damaged portions after clearing the surface with sand paper for making proper weling. The job involves cost of material including it carriage by head load from the nearest road side, skilled and semi skilled labour, hire charges of tools and tackles, transportation charges up to the nearest road site, including carriage charges up to the site.

Dismantling of all the burnt/damaged parts of starter and P/f of new contact points, fixed and moving. Repairs to its moving mechanism of both starters done by p/f of sleeve to the moving rod. P/f of no volt coils. Reassembling of all the parts of the starter. Shifting back to the site and fitting back at the installation position. Making all the electric connections done and then Testing of starter on no load and then on full load. Complete job includes cost on account of material and labour charges which includes to and fro carriage and its handling charges.

Upkeepment of 250 KVA Electric transformer by Providing/fitting of link set in place of damaged link set. The job also includes P/f of new 3 no. HT and 4 no. LT bush rod assembly for all three phases and neutral including insulators, rubber seals and closing of top cover and making connection on HT and Lt sides. Providing and filling 150 litres of T oil provided by the department. The job includes cost of material and labour charges at the site inclusive of rebate on old parts.

JAI MAA BHAGWATI ELECTRICAL AND MECHANICAL WORKS

N B Engineering and Electric Works