PROVN OF BOREWELL AND FILTERATION PLANT OF STN SWIMMING POOL UNDER GE (WEST) MATHURA

Trial bore of 250mm dia upto 100 meter depth below ground level in any kind of soil strata including hard stone/boulder including electric logging, MS cap, MS flat iron clamps, reducing socket etc complete all as specified and directed. Note : Contractor will perform electric logging by resistivity method and submit the ground strata report of aquifer before performing the trial bore complete all as specified and directed.

Development of trial bore by reaming in following step:- (a) From 150mm to 200 mm (b) From 200mm to 350 mm (c) Reaming upto 350mm for 70 RM from ground level including casing pipe of 250mm dia and thickness 8mm and pea gravel complete all as specified and directed.

Development of trial bore by Reaming upto 350 mm from depth 70 meter to 100 meter including slotted casing pipe of 250mm dia and thickness 8mm and pea gravel around the Casing pipe complete all as specified and directed. Note for serial item No. 2.00 & 3.00 : Any necessary slotting work, ancillary works, deployment of additional machinery, tools & plants, and allied operations required for proper execution of work shall be deemed made under the relevant items of this Schedule.

Labour only for making slot in MS ERW casing pipe of sizes 2 mm in width and 70 mm in length. Slots shall be provided in a staggered pattern uniformly throughout the slotted portion of the pipe to ensure proper intake of water and structural stability of the casing.The total slotted area shall be approximately 30% of the external surface area of the casing pipe. All slots shall be cleanly cut, free from burrs, sharp edges, deformation, and shall not impair the strength of the pipe. Slotting shall be carried out strictly as per satisfaction of the Engineer-in-Charge.

Supply and Fixing cost for MS reducer, bail plug, well cap, MS strip for centering, MS iron clamps, electric logging and sample strata box complete all as specified and directed.

Development of tube well with compressed air and after with 25% extra capacity pump by pumping muddy water complete all as specified and directed.

Yield test for the bore well by continuously pumping for 16 hours to determine safe pumping yield complete all as specified and directed.

Supply, laying and testing pipe PVC-U heavy coupler type 100 mm dia including all fittings, to withstand safe allowable pressure 26 Kg/Cm2 or 260 Meter having standard length of 3 Meter and end thickness not less than 12.3 mm and Barrel thickness not less than 10 mm to be lowered with submersible pump set into borewell alongwith suitable rope wire all as directed by Engineer-In-Charge.

Supply,installation & fixing of Submersible pump set complete with electric driven motor 415 Volt, TP alongwith chain pulley mounted on ISMB (180x90mm (minimum 18 Kg/mtr)) structure 5 mtr height (one mtr grouted in ground and remaining 4 mtr above ground) and 2 mtr wide plateform. ,submersible pump capacity shall be 10 HP complete all as directed by Engineer-in-Charge. Note: The discharge of the pump will be decided after yield test and as directed by Engineer-in-charge.

Supply & fixing starter with fully automatic star delta (FASD) starter/controller with in built WLC suitable for 10 HP, 3 phase, 415 volt AC, AC-3 duty Submersible motor pump in sheet steel enclosure with IP 54 protection to changeover from star winding to delta winding with the help of electronic timer, having ON/OFF operation and overload protection with additional features like Auto ON (with 30 sec ON Delay), indications of supply ON/OFF and pump ON/OFF, reading of real time voltage & current of pump with unique dual analog meter, single phasing protection relay (SPPR), relay range 10 to 18 Amp, wide band coil operation from 65% to 110% of rated coil voltage - 380/415 Volt, phase-reversal protection, phase-unbalance protection, variable time-delay adjustment inside controller complete in all respect and conforming to IS/IEC 60947-4-1 standards complete all as specified and directed.