tender for special repair ber bore well 02 nos at 3 rpd and od complex alongwith connected items under ge (west) mathura- 1 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. (02 nos of borewell) complete all as specified and directed.note : contractor will perform electric logging by resistivity method and submit the ground strata report of aquifer duly approved by any govt/authorised lab before performing the trial bore 2 development of trial bore by reaming in following step:-(a) from 250mm to 350 mm(b) from 350mm to 450 mm(c) from 450mm to 550 mm(d) from 550mm to 650 mmreaming upto 675 mm for 60 rm from ground level including ms erw casing pipe of 350mm dia isi marked having thickness 8mm, pea gravel around the casing pipe.note : any necessary slotting work, ancillary works, deployment of additional machinery, tools & plants, and allied operations required for proper execution shall be deemed made under the relevant item of this schedule. 3 development of trial bore by reaming upto 525 mm from depth 60 meter to 100 meter including ms erw casing pipe of 250 mm dia having thickness 8mm and pea gravel around the casing pipe complete all as specified and directed.note : any necessary slotting work, ancillary works, deployment of additional machinery, tools & plants, and allied operations required for proper execution shall be deemed made under the relevant item of this schedule. 4 supply and fixing cost for ms reducer, bail plug 4.8mm thickness, well cap, ms strip for centering, ms iron clamps, electric logging and sample strata box complete all as specified and directed. 5 development of tube well with compressed air and after with 25% extra capacity pump by pumping muddy water complete all as specified and directed. 6 labour only for making slot in ms erw casing pipe of sizes 2mm in width and 70mm 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 complete all as specified and directed.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. 7 yield test for the bore well by continuously pumping for 16 hours to determine safe pumping yield complete all as specified and directed. 8 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 complete all as specified and directed by engineer-in-charge. 9 supply,installation & fixing of submersible pump set complete with electric driven motor 415 v, tp alongwith chain pulley mounted on ismb(180x90mm (minimum 18kg/mtr)) structure 5 mtr height (one mtr grouted in ground and remaining 4 mtr above ground) and 2 mtr wide plateform. the work includes providing bore well (casing pipe size 350mm) submersible pump capacity shall be 20 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. 10 supply & fixing starter with fully automatic star delta ( fasd) starter/controller with in built wlc suitable for 20 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 25 to 42 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. 11 supply, installation, testing and commissioning of lt panel, outdoor type, floor mounted not less than of 1000mm x 800mm x 450mm ip-54 degree of protection suitable for 3 phase, 4 wire system , 415 volts, 50 hz ,cpri approved factory made having independent compartment for 150 amps copper bus bar, dust and vermin proof, outer shell fabricated of 2mm thick crca sheet & made out angle iron frame of 40x40x5mm (for external) with seven tank treatment process for powder coating with thickness not less than 60 micron provided with suitable gasket to make it dust/vermin proof & general construction confirming to is 8063/93, pedestal flame grouted in pcc (1:2:4) type b-1, using 20mm graded stone aggregate, thimble and cable entry boxes with cable glands complete in all respect and comprising of the following: inner shell:- inner shell made out of 1.6 mm thick crca sheet duly compartmentalised for each control gear, front lockable/openable by keys from both sides having chromium plated 19 mm dia fancy lock (02 nos in each neutral flow of air u type completely vermin proof & to accomodate incoming/outgoing mccbs and tpn copper bus bar of rating not less than 1.5 times of rated capacity of incoming mccb. the colour coded heat shrinkable sleave for bus bar and shall be mounted on non hydroscopic, non combustible,track resistant, high strength frp/smc/dmc material at an interval not more than 250 mm throughout complete all as specified and as directed.description of serial item no. 11.00 contd… 12 description of serial item no. 11.00 contd…incoming with outgoing :-(a) mccb - 100 amp, 415 volt, 4 pole, 36 ka with adjustable thermal & magnetic protection/setting, ics = 100 % icu, thermal adjustable - 0.8 to 1 in, magnetic adjustment - 5 to 10 in in accordance with is/iec 60068-2-6 standard. - 01 each (b) ac analog voltmeter (moving coil- rectifier type), 0 to 600 volt, square flush size - 96mm x 96 mm, accuracy class 1.5 including selector switch - 03 each(c) ac analog ammeter ct operated (moving coil- rectifier type), square flush size - 96 mm x 96 mm, accuracy class 1.5 including selector switch - 03 each(d) led indicator lamp, 22.5 mm dia for ryb phase indication -01 set ( 03 nos of set)