GE/ALP (8683) KOLKATA OF 2026-27

M&L for boring/drilling & borewell of 550mm dia in any type of soil including rocky strata, boulders etc. for casing pipe, by suitable method prescribed, including collecting samples from different strata, prepairing and submitting strata chart/ bore log, including hire & running charges of all equipments, tools, plants & machineries required for the job, up to a depth of 350 meter below ground level complete all as per specified and directed.

M&L for development of borewell/tubewell in accordance with compressed air after 25% extra capacity pump by pumping out muddy water & water testing for chemical & bacteriological test complete all as per specified and directed.

M&L for yield test for borewell by continuously pumping for 24 hours to determine safe pumping yield complete all as per specified and directed.

M&L for gravel packing the tubewell construction in accordance with & including providing gravel fine/medium/coarse in required grading size as per actual requirement complete all as per specified and directed. Note: After gravel shrouding up to the sand layer is to be tapped, cement ceiling is to be carried out for 2-3 mm thickness against the impermeable clay zone just above the tappeds and zone.

Supplying, assembling, lowering and fixing in vertical position in bore well, PVC Schedule 80 pipe of 300mm nominal dia confirming to ASTM-D-1785/IS: 12818; [Make:Oriplast/ Supreme or equivalent as approved by GE] including required hire and labour charges, fittings & accessories etc. for all depths complete all as per specified and directed.

Supplying, assembling, lowering and fixing in vertical position in borewell, PVC Schedule 80 pipe of 150mm nominal dia confirming to ASTM-D-1785/IS: 12818; [Make:Oriplast/ Supreme or equivalent as approved by GE] including required hire and labour charges, fittings & accessories etc. for all depths, complete all as per specified and directed.

Supplying, assembling, lowering and fixing in vertical position inbore well, fiber glass fillter 150mm nominal size dia 6mm wall thickness (min) confirming to ASTM-D-1785/IS: 12818 : [Make:VMT or equivalent make as approved by GE] including required hire and labour charges, fittings & accessories etc. for all depths complete all as per specified and directed.

M&L for reducers, bail plug, well cap, MS strip for centering, MS iron clamps, all sorts pieces, electrlogging and sample strata box etc. complete all as per specified and directed.

Supply and installation of vertical borewell submersible pump (Motor make: KSB/Kirloskar equivalent make as approved by GE] 15 HP, Star Delta starting with lead cable, capacity 1250LPM at 50-60Mtr Head, 100mm discharge delivery with 1 year maintenance warranty complete all specified and directed.

Supply, installation, commissioning, and testing cubical type LT panel board of suitable size, indoor canopy type, manufactured by CPRI approved factory, floor mounted, dust & vermin proof, front and rear operated door with locking arrangement made iron frame work and CRCA sheet of 2 mm thick duly painted with two coats of powder coated paint both internally and externally. The panel shall be suitable for 415V, 50Hz, 3ph4 wire system and shall be with suitable capacity copper busbar (1.5 times the incoming switch gear current rating) with suitable size PVC insulated copper conductor sthimbles, cable complete with following accessories all as per specified and directed. (a) MCCB, 200 Amps 4 Pole, 415 Volts (b) Voltmeter, Ampmeter (c ) Single phase preventor (d) Phase Sequensor (e) 15 HP fully automatic star-delta startar-01 Nos