Providing, Installation, testing and commissioning of Sub Pump set 15000 GPH X 91 mtr head and 100 KVA voltage stabilizer along with allied works at Tubewell no 12 Boria for feeding water at Tawi River Front under SANJY 2026 (Revex Savings)

Providing, Installation, testing & commissioning of 15000 GPH x 91 mtr head Submersible pumpset along with allied works at Tubewell No 12 Boria. Providing, Installation, testing & commissioning of 15000 GPH x 91 mtr head Submersible pumpset at tubewell no 12 Boria. 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 suit 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 2900 RPM, 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 winding 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 Pump-set must be of reputed make of Grundfos Pumps/KSB/ Kirloskar/ conforming to relevant BIS/IS standards/ codes. The job further includes Fabrication of adapter Nipple approx. 1 meter long fabricated out of MS Pipe, of which bottom end diameter shall be reduced to the delivery of Submersible 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 adapter 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 are passed through the nuts welded on the adapter nipple piece, tightening of double nuts on both sides. The Job includes coupling of pump and motor, properly checking of movement of the pump, tightening of the adapter nipple to the delivery side of the pump, tightening of tie rod and testing of the pump set in the testing pit at workshop. Lowering of submersible pump set into the Tube well to the pump position along with the column pipes of 6 inch diameter by using special tools and tackles viz chain pulley block, MS Clamp etc. The Job includes patching of the submersible cable of motor by using patch rolls and insulation tape to make waterproof for lowering of submersible pumping 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 electromechanical connections. Providing and fitting of copper thimbles of required amperes and cable connectors. The work shall be completed in all respect. Complete job includes cost of material, labour charges, carriages and other charges .Complete Job Providing, installation, testing and commissioning of 100 KVA manually operated voltage stabilizer along with allied works at Tubewell no 12 Boria. Design, Providing, Installation, testing and commissioning of 3 (three) phase step up/step down manually operated copper wound oil cooled voltage stabilizers conforming to relevant IS Code suitable for operation on unbalanced input voltage range and balanced output voltage as mentioned for 3 phase A.C supply. The stabilizers shall be copper wound, and the complete unit should be in steel case enamel painted and fitted with suitable wheel rollers for easy portability. The other detailed specifications are as under: - Specification and Rating: - 100 KVA having input voltage 300 to 480 volts, output 415V + 2% and frequency of 50 Hz + 3% and any item not mentioned in these specifications but considered necessary as integral part of the equipment for efficient working shall also be included by the firm in the voltage stabilizers. 1. Core: - The core should be of first quality of CRGO Silicon steel. 2. Transformer oil: - The rates shall include cost of ISI Marked transformer oil, which shall however be supplied along with voltage stabilizer in required quantity to specified level of oil tank of stabilizer in sealed drums separately. The transformer oil to be used is to be ISI Marked conforming to IS 335 with the latest amendments. 3. Copper conductor: - The conductor should be 99.95% electrolytic copper. 4. Container Gauge: - The quantity of transformer oil used and the size of container should be mentioned and the sheet used for manufacture of voltage stabilizer should be 14/16 gauge and gauge of the sheet used for fabrication of panel should be 16/18 SWG. 5. Instruments/Stabilizer Panel: - The voltage stabilizers should be fitted with MCCB, voltmeter, ammeter, selector switches, indicator lamps, high voltage and low voltage cut off relay, earth fault relay, single phase voltage preventor cut off alarm. The MCCB/fuses, voltmeter, ammeter, Selector switches and indicator lamps and relaysshould be of reputed make conforming to ISI standards with latest amendments if any. 6. Bypass Switch: - The equipment to be provided with bye pass switch of suitable capacity of reputed make. 7. Rotary Switch: - The Rotary Switch provided to adjust the output voltage of suitable rating and should be of reputed make and of heavy duty to withstand all the tests and working load. The rotary switch should have 8 steps with 2 steps down, 5 steps up and step No. 3 for line voltage. 8. Terminal block: - Terminal block for input and output connections should be of a reputed make and meant for heavy duty as per the current rating and type of conductor to be used. 9. Characteristic Features: - The three phase Manually operated copper wound oil cooled voltage stabilizers shall have the following characteristic features: - i. Continuous duty performance at ambient temperature 20C to 550C. ii. Stable and effective under system power factor and frequency fluctuation as well as overload up to 15% and under load up to 50% of the connected load. iii. Low internal impedance. iv. Negligible wave form distortion during starting under operation and stopping conditions. v. Accommodate the effect of higher starting current and should be able to recover from the shock. vi. No over shooting or hunting. vii. Negligible phase shift ensuring no change in system power factor. viii. The capacity of oil tank should be indicated and should be fitted with the passage for oil filling/topping with locking mechanism to prevent the transformer oil theft. ix. The stabilizer shall have :- a. Suitable breather. b. Leak proof de-sledging and drain cock for transformer oil. c. Lifting hooks provided suitable positions for handling of the equipment. d. Oil gauge for monitoring level of transformer oil. x. The equipment shall be designed and manufactured ensuring the safety requirements as envisaged in IS: 9815/IS 2026 as applicable. xi. The stabilizer should be provided with an arrangement to avoid any seepage of water into the voltage stabilizer during storage / handling. 10. Marking :- Stabilizers shall be marked with manufacturer’s name and trade mark on the plate fitted on the stabilizer indicating rating in KVA, range of input and output voltage, rated output current, frequency, number of phase, type of load viz. unbalanced input and balanced load, quantity of transformer oil and also the reference to the IS: standard. 11. Design / technical details of the Voltage Stabilizers: - The firms are required to furnish details of design of the voltage stabilizers indicating number of primary and secondary turns with other relevant details. 12. Deviation: - Any deviation from the prescribed specifications deemed necessary by the manufacturers for improvement in design, efficiency and performance of the equipment shall have to be suitably justified by the firm with supporting technical data. The Department may or may not consider such deviations and decision of the Department shall be final and binding on the tenderers. Testing: The firm shall provide all the test certificates mandatory for testing of Voltage stabilizer at manufacturer source as per IS standards. Painting: - Painting shall be done on voltage stabilizers in steel grey or light blue shade or of reputed make. Providing and fitting of 185mm2 3.5 core aluminium armoured service cable 50 mtrs in length from transformer to Main Switch of reputed make confirming to ISI and providing and fitting of Link set and Gang set complete. Installation:- Installation, testing and commissioning of 100 KVA manually operated voltage stabilizer at Tube well no 12 Boria by way of carriage up to the site of work using crane/chain pulley block and manual labour. Providing and fitting of 50 mm2multi strand copper cable 40 mtrs in length from main switch to voltage stabilizer and voltage stabilizer to LT control panel of reputed make confirming to ISI. Dry testing of the assembled voltage stabilizer at site of work. Placing the voltage stabilizer at safer and suitable place and filling of transformer oil up to the required level. Electrification of pump room by disconnecting of electric supply, replacing all burnt and damaged cables, socket and switches. Providing and fitting of 2 nos flood lights 20 watt, Electric wall pedestal fan along with battens for laying of wires of 1.5 mm2 size, switches and sockets of required ampere inside pump room and 4 Nos of 30-watt LED flood lights for illumination in the premises of pump room.The complete job includes cost of material and labour charges, carriage, crane charges for loading, unloading etc. (Complete job)