Drilling of 01 No Bore well installation of casing pipe and submersible pumps along with connecting to water pipe line at Left bank for Power House Teesta V Power Station

Amount

Deployment of underground water detection system for drilling of Bore well.

Drilling of bore well, by using heavy duty hydraulic power ring and air compressor for drilling 8’’ dia tube wells by ODEX 165 method of drilling through any kind of soil, boulders and rock upto desire depth including hiring and running charges of machineries, equipment and cost of labour , fuels/Lubricants etc. as a required welding casing pipe and casing shoes etc.

Supplying, assembling, lowering and fixing in vertical position in borewell, ERW (Electric Resistance Welded) FE 410 plain slotted (having slot of size 1.6/3.2 mm) mild steel threaded and socketed/ plain bevel ended pipe (type A) of required dia, conforming to IS: 8110, of reputed and approved make, having wall thickness not less than 5.40 mm, including painted with outside surface with two coats of anticorrosive bitumestic paint of approved brand and manufacture, including hire & labour charges, fittings & accessories, all complete,for all depths, as per direction of Engineer -in-charge. 200 mm nominal size dia.

Supplying ,assebling lowering of LCG(low carbon galvanized) strainer 200 mm dia including packer.

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

Providing and fixing suitable size threaded mild steel cap or spot welded plate to the top of bore well housing/ casing pipe, removable as per requirement, all complete for borewell of:200 mm dia.

Providing and fixing M.S. clamp of required dia to the top of casing/housing pipe of tubewell as per IS: 2800 (part I), including necessary bolts & nuts of required size complete:200 mm clamp.

Providing and fixing Bail plug/ Bottom plug of required dia to the bottom of pipe assembly of tubewell as per IS:2800 (part I).:200 mm dia.

Providing, Fitting and fixing GI pipe (HEAVY DUTY),(excluding trenching, refilling, compacting and the costof fittings) all complete:80 mm dia G I pipe.

Providing, Fitting and instalation of 415 Volt-3-Phase, 25 HP submersible pump (KSB make model BPDN 302/12A+UMAH 150,/117M head) with L&T make 25HP star delta starter pannel (MU-G-30) or equivalent of required specification at Borewell all complete.

Providing and fixing gun metal gate valve with C.I. wheel of approved quality (screwed end) :80 mm nominal bore.

Providing and fixing gun metal non- return valve of approved quality (screwed end) :80 mm nominal bore-Horizontal

Providing and fixing Finolex/L&T make 4 sq.mm X 3 Core Copper flat cable for submersible pump all complete as per direction of Engineer incharge.

Providing and fixing pvc coated 6mm Steel Sling rope all complete as per direction of Engineer incharge.