Providing Installation Testing and Commissioning of 9000 GPH X 91 mtr head Submersible pump set along with allied works at Tube Well cum pumping station Sector G ERA Sainik Colony under District Capex

Amount

Providing, Installation, Testing and Commissioning of 9000 GPH X 91 Mtr. Head Sub Pump Set at Tube Well cum pumping station Sector G ERA Sainik Colony. The pump bowl should be of close grained cast iron with renewable wearing rings of bronze material. The pump shaft shall be of stainless steel guided with stainless steel distance sleeves /shaft protection sleeves provided with each bowl above and below the stainless steel impeller the casing wearing rings shall be of bronze material .The coupling shall be of mesh type rigid sleeve of stainless steel ,non slipping type with matching groove and cotter arrangement to suite keyway provided .The suction case shall be of close grained cast iron material .The motor should be three phase AC supply having nominal speed of 2900 RPM, 380 Volts + 15% of frequency 50 Hz + 3%. The motor should be totally enclosed squirrel cage induction type, water cooled and sealed against outside water being pumped. The windings shall be wet type water lubricated and provided with metal tilting thrust pad designed to take up all untoward load to most unfavorable running conditions. The Acceptable Make Kirloskar/ KSB/ Grundfos. The job further includes Fabrication of adapter Nipple approx 1 mtr long fabricated out of MS Pipe, of which bottom end diameter is to be reduced to the delivery of Sub. Pump and threading the Pipe for screwing into the delivery portion to the submersible pump and other end of the adapter nipple is welded with MS flange of required size fabricated out of MS Plate for fixing with the column pipe.2 No nuts of required size are to be welded on opposite size of the proper piece so that clamping bolt of the tie rod can passed through it. The Job includes the cost of material and labour charges .Fabrication of the tie rod clamping arrangement for clamping the pump and motor to the upper adopter nipple, fabricated out of 40x6 MS Plate as per required size. The upper ends of these flat strips should be welded with full threaded bolt 12mm dia. and 10 cm long. These bolts are to be passed through the nuts welded on the adopter nipple piece, tightening of the 12 mm double nuts on both sides including cost of material and labour charges. Fabrication of 100 mm dia. MS forged clamp 2 No’s for lowering the MS column pipes into the Tube well casing pipe. The clamp should be in the two halves and should have two holes on either side of the holding arm. The clamp has to be fabricated out of MS Flat of 100 mmx10 mmx 0.75 mtr. The Job includes the cost of MS flat for clamp 4 No’s with cost of material and labour etc. The Job includes coupling of pump and motor properly checking of movement of the pump, tightening of the adopter nipple to the delivery side of the pump tightening of tie rod and testing of the pump set in the testing pit at workshop. The job also includes providing of 100mm column pipes 4 No’s with proper MS flanging, rubber flanges, Nut & Bolts conforming to relevant IS/BIS standards, as per site conditions, lowering of submersible pump set into the Tube well along with the column pipes of 100 mm dia. by using special tools and tackles viz chain pulley block, MS Clamp. The Job includes. the cost of rubber gasket, nuts bolts and cost of MS flanges, sub pump set and labour charges. The Job includes Providing/Fitting of three phase copper Submersible Cable 6 mm sq. 180 mtr, patching of new sub. cable of motor by using patch rolls and insulation tape to make water proof for lowering of sub, pump unit. Testing of submersible pump set on full load by making connections of submersible cable of motor pump set with the panel and checking/high testing of all the electro mechanical connections. The complete job includes cost of material, labor and charges of mechanical transport including testing of the pump set on full load and handling charges including lowering charges. Providing of 100 mm dia 1.6 (PN) CI Sluice Valve & Reflux Valve 1 No. each. The Job also includes Providing and fitting of different three phase three pole power contactors of capacity 40 Amp-01no, 50 Amp-02no, and three phase three pole MCCB of 60Amp-01no and three phas three pole HRC fuse unit disconnector Main Switch 220Amp-01no at T/well and P/stn. Sec-G ERA Sainik colony. The preferable make for contactors are L&T/Schneider/Sprecher. The Job also includes Designing, fabrication, installation. Testing and commissioning of LT control Panel suitable for 440 volt, AC-3 phase, 50HZ, power supply for 75 HP HC motor at Sec-G ERA Sainik Colony. The panel should be dust and vermin proof fabricated out of 14/16 SWG CR sheet supported on MS angle suitable size and having provision for fixing it on the floor with the help of 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 two coats of anti - rust primer and two coats of steel grey enamel paint. The panel should be equipped with following components/ features. MCCB:- The panel should be fitted with an three phase three pole MCCB 250 Amps. Capacity and a set of RYB indicators at incoming side. Star Delta Starter:- The panel should be fitted with fully automatic star delta starter of suitable size comprising of three nos. three phase three pole air break contactors. 140 Amps.- 02 Nos. and 110 Amps- 01 no., timer 01 no. for changeover of the supply of motor from star to delta, 02 nos. push buttons for start and stop operation of motor, 01 no. indicator, 01 no. MCB 6 Amps. for protection of internal control wiring with proper internal control wiring with flexible copper cables to complete the star delta circuit of outgoing supply. Protection devise/fault analyzer:- A protection 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 fault which my otherwise damage the motor windings:- 1. Voltage related fault:- Single phasing, under voltage, over voltage, unbalance voltage. 2. Current related fault:- Over current/load, dry running, unbalance current/load, earth leakage, short circuiting. 3. Mechanical fault:- Locked rotor, broken shaft, etc. b) Display line current of RYB Phase and also line voltage of RY, BR and YB phase. c) Display and record trip counts and indicate trip status for over load, under load, single phase, unbalance, earth fault, over voltage, under voltage respectively. d) Analyze, display & record no. of operation and duration of motor running. Bimetal overload relay :- A bimetal overload relay of suitable range should be fitted in the panel as an extra protection to protect the motor in case of failure of fault analyzer with an isolation/ bye pass switch to by-pass the fault analyzer. Complete Job in all respect. Complete Job.

JAGDEMBAY MECH ENGG WORKS

Rishabh Electricals and Mechanical Works