Repairing, installation, testing and commissioning of submersible pump set along with providing of automatic LT control panel 415 volts, AC-3 Phase, 50 Hz. at pumping stations intake Beripattan Sunderbani

Amount

Repairing to 5000GPH X 100MH multistage submersible pump set installed at intake of Baripattan Sunderbani. Repair to the pump by way of Dismantling of pump and segregation of its part. Rebuilding of pump shaft at damaged portion by using S.S. electrodes welding, turning and polishing. The job includes P/F of body bushes, neck rings, new impeller 6Nos and repair to other damaged impellers by brass welding and polishing. Assembling the pump by replacing worn out studs, nut bolts etc. job also includes repair to rotor of submersible by way of welding at the damaged portion with the special welding electrodes turning, finishing to coupling size &making key way and cotters etc. Complete rewinding of 20HP submersible motor, Job also includes repairing of motor rotor, fitting of rotor bushes 4nos thrust pad set 1no, assembling the motor and coupled with pump by P/F of new tie rod clamp complete job includes cost of material and labour charges for dismantling/fitting, carriage /shifting of submersible pump set.

Installation, testing and commissioning of SPS 5000 GPH X 100 MH at pumping station Intake of Beri pattan sunderbani, along with allied electromechanical works by way of Fab / fitting of GI pipe nipple with threads at one end & MS flange at other end & fastening of nipple with the delivery of pump. P/F of MS bends 3 inches dia. with MS flanges. P/F of MS clamps 3 inches dia. - 02 No. for holding sps & nipples. Fab/ fitting of bed plate for resting of clamps holding pump set & nipples. Lowering of pump/motor along with GI pipe nipples into the intake with the help of chain pulley block , ropes & skilled/unskilled labours .P/F of one no 3 inches dia sluice valve & one no check valve 3 inches dia with MS flanges , nut/bolts & washers. P/F of 4mm square submersible cable for making of electrical connection from motor to LT control panel with proper thimbling & insulation. P/F of nut/bolts, washers, tapes & sundry items .Complete job includes cost of material, labour charges, carriage charges & complete welding work at site. Complete job includes checking continuity of complete electrical circuit & testing/ commissioning of pumping machinery.

Providing, installation, testing and commissioning of LT control panel 415 volts, AC-3 Phase, 50 Hz. for 20 HP motor at pumping station......................... The panel shall be dust and vermin proof fabricated out of 16 SWG CR Sheet supported on M.S. angle job suitable size and provision for fixing it on the ground with the help of foundation bolts. The panel should be sturdy enough for vibration free operation and should be equipped with suitable locking /sealing arrangements. The structure should be provided suitable entry and exit holes for incoming and outgoing cables. The panel should be given a coat of anti rust primer and two coats of steel grey paint. The panel should have equipped with following components / features: 1) M.C.C.B. The panel should be fitted with an M.C.C.B. of suitable capacity, 1 no. volt meter, 1 no ammeter along with a set of CTs, 1 No. V.S.S., 1 No. A.S.S. and a set of RYB indicators at incoming side. 2) Star delta Starter The panel should be fitted with a fully automatic star delta starter comprises of 3 Nos. air break contactor of suitable capacity (2 for main and delta supply, 1 No. air break contactor for star operation), 1 No. timer for change over the supply of motor from star to delta, 2 Nos. push buttons for start and stop operation of motor, 1 No. indicator .1 No. MCB 2 Amps. for the protection of internal control wiring, a neat and clean internal control wiring should be made with flexible copper cables to complete the star delta circuit of outgoing supply. 3) Protections devise / fault analyzer A protections devise / fault analyzer shall be fitted with the panel with capability to:a) Protect the motor by isolating the power supply of motor by de-energizing the starter/panel from following electro-mechanical faults which may otherwise damage the motor windings:i. Voltage related fault: Single phasing, reverse phase, under voltage, over voltage, unbalance voltageii. Current related fault: Over load, Under load (dry running), unbalance load, earth leakage, short circuiting Short circuit b) Display line current of R, Y & B Phase and also line voltage of RY, YB and BR phase.Bimetal overload relay: A bimetal over load relay of suitable range should be fitted with in the starter as an extra protection to protect the motor in case of failure of fault analyzer with an isolation/bye pass switch to bye pass the fault analyzer. Complete job includes cost of Supply, loading, transportation (MT), insurance, Unloading, carriage/ shifting (head load), fitting, installation ,testing and commissioning at site.

PERFECT ELECTRICAL WORKS