Providing, Installation, testing and commissioning of 9500 GPH X 78mtr head Submersible pumpset at Tubewell RBI Gandhi Nagar

Providing, Installation, Testing and Commissioning of Submersible pump set 9500 GPH X 78 meter head suitable for casing pipe size 200 mm diameter at Tube well RBI Gandhi Nagar. The pump bowl shall 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 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 shall be three phase AC supply having nominal speed of 2850 RPM ± 50, 415 Volts ± 5% of frequency 50 Hz ± 3% and power rating of the motor shall be above the power consumed by the pump at duty point with next higher rating available as per standard size. The motor shall 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 unfavourable running conditions. The pump shall be of reputed make. The job shall include Fabrication of adapter Nipple approx. 1 meter 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 shall be welded with MS flange of required size fabricated out of MS Plate for fixing with the column pipe assembly. Fabrication of the tie rod clamping arrangement for clamping the pump and motor along with adopter nipple, fabricated out of 40x6 MS Flat as per required size. The upper ends of these flat shall be welded with full threaded bolt 12mm Diameter and 10 cm long. These bolts needs to be passed through the nuts welded on the adopter nipple piece, tightening of double nuts on both sides. The Job also 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. Providing and fabrication of one number column pipe of diametre 100mm with welding of suitable flanges on both sides. Extraction of old submersible pumpset thereafter lowering of new submersible pump set into the Tube well to the pump position approx. 40metres along with the column pipes, of 100 mm diameter by using special tools and tackles viz chain pulley block, MS Clamp. Job also includes providing of nut-bolts and gaskets. The Job shall also includes patching of the 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 of all the electromechanical connections. The work shall be completed in all respect. Complete job