Providing, Installation, Testing and commissioning of Sub. Pump set of 1000 GPH X 76 mtrs head Submersible pump set along with allied works at T/well Purkhoo Old Store under UT Capex Budget 2022-23 (ongoing)

Providing, Installation, testing and commissioning of 10000 GPH X 76 Mtr as per IS reputed make submersible pump-set along with allied works at T/well Purkhoo Old Store. All the pumpsets shall have following specifications : 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, 400 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 upper chamber of the submersible pump shall be duly fitted with an NRV so that during stoppage of submersible pumpset reverse water cannot operate the pumpset in reverse rotation. The job involves fabrication of adopter Nipple/reducer nipple approx 0.5 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 adopter 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. Fabrication of the tie rod clamping arrangement for clamping the pump and motor to the upper adopter nipple, fabricated out of 40mmx6mm MS Plate as per required size at site. 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. The Job includes coupling of both pumps and motors properly checking of movement of the pump, tightening of the adopter nipples to the delivery side of both the pumps, tightening of tie rods and testing of the pumpset in the testing pit at workshop. Shifting of the submersible pumpset to work site. Extraction of old sub. Pump set and then Lowering of new submersible pumpset into the Tube well along with the column pipes and requisite material such as rubber flanges, nut/ bolts etc. by using special tools and tackles. Providing and Fitting of 10 MM SQ. Sub. Cable 60 Mtrs in length. Making all electrical connections of Submersible Pumpset with LT control panel by proper thimbling and crimpling all cable ends and then testing and checking for specified amperage on full load. The extracted running submersible pump shall be properly stacked inside the pump room at appropriate place, so that it can be utilized in case of failure of the lowered submersible pumpset in future. Complete job includes cost of pumps, materials, labour charges, to &fro charges, etc.