Flushing of existing borewell near new coal stock yard at Adasa UG to OC mine of Saoner Sub Area.

Taking out exisisting pipe,submersible pump from exisisting borewell and other accessories upto all depth as per instruction of engineer in charge.

Development of tube well in accordance with IS : 2800 (part I) and IS: 11189, to establish maximum rate of usable water yield without sand content (beyond permissible limit), with required capacity air compressor, running the compressor for required time till well is fully developed, measuring yield of well by "V" notch method or any other approved method, measuring static level & draw down etc. by step draw down method, collecting water samples & getting tested in approved laboratory, i/c disinfection of tubewell, all complete, including hire & labour charges of air compressor, tools & accessories etc., all as per requirement and direction of Engineer-in-charge.

Supplying, erecting, testing and commissioning of minimum three & above star rated submersible pumpset of 3.75 kW/5 HP with 415 V, three phase, 50 Hz A.C. supply suitable for 150 mm dia. borewell with 120 to 390 lpm discharge at 67 to 21 m head & discharge & delivery pipe of size-50 mm dia. with a necessary H type clamps as per specification no. WP-SMP.

Supplying, erecting, testing and commissioning of automatic control panel for three phase , 415 V, A.C. supply, submersible/centrifugal pump set upto 7.5 HP consisting of D.O.L. starter having relay range 9-14 A, S.P.P., combined ammeter/voltmeter, phase indicating lamp enclosed in CRCA powder coated vibration proof enclosure with IP54 protection with single phasing, phase reversal, phase imbalance, etc.

Supplying, erecting, testing and commissioning of D.O.L starter suitable for 400 V, 3 phase 50 Hz with no volt coil and overload element with necessary materials and connected to supply above 3 HP to 7.5 HP.

Supplying, erecting, testing and commissioning of flat flexible 3 core 6 sq.mm PVC sheathed submersible type copper cable suitably clamped at fixed intervals with column pipe assembly complete.

Providing ISI mark G.I. pipe of following class and dia. excluding GST levied by GOI & GOM in all respect, inspection charges, transportation to stores, etc.completeasperIS-1239/2004.Note : One coupler shall be provided with eachfull length of pipe cost of which is included in rates below.b)MEDIUM vi) 50mm.(5.16kg./m)

Lowering, specials layingandjointing of following class and diameter including conveyance from stores to site of works, all labour, etc. complete either underground or in vertical position,asdirectedbyEngineer-in-charge.b) MEDIUM vi) 50mm.(5.16kg./m)

Providing and fixing G.I. pipes complete with G.I. fittings including trenching and refilling etc. External work 50 mm dia nominal bore

Making connection of G.I. distribution branch with G.I main of following sizes by providing and fixing tee, including cutting and threading the pipe etc. complete: 50 to 80 mm nominal bore