Borewell & Tubewell Works Tenders

Running of compressor for development and testing of tube well.

Construction of Tube-well upto 100 Meter depth and above in all type of rocks by DTH system and over burden, to accommodate casing pipe of following sizes in all types of soils and over burden including lowering of casing pipes, but excluding cost of casing pipes as per IS : 2800 (Part I & II) 1979 specifications. The work would be completed after obtaining sand free water. The tube well should have a throughout bore as per nominal dia of casing pipe: 125mm-do-.

SINKING OF TW Labour for drilling a perfectly vertical bore hole at specified dia for a specified depth below ground level through consolidated and unconsolidated rock with down the hole hammer drilling rigs or combination rigs as required to suit the site condition as per the direction of the Engineer-in-charge including use of own rigs with its accessories, tools and plants and consumables etc for lowering of 200 mm dia P.V.C/G.I/MS pipes for housing fitted socket and with or without well screen as per the necessity for soft, medium, hard and boulder formation (G.I/P.V.C/M.S casing pipes if required to prevent collapse of over burden is to be provided by the contractor including lowering and withdrawing after completion of the tubewell) Drilling of 125mm dia bore-

Supplying , filling , spreading & leveling coarse sand of size range 1.5mm to 2 mm in recharge pit, in required thickness over gravel layer, for all leads & lifts,all complete , for all depths as per direction of Engineer-in-charge. Development of tube well in accordance with IS: 11189, to establish maximum rate of usable water yield without sand content , with required capicity air compressor , running the compressor for required time till well is fully developed , measuring static level & draw down etc. by step draw down method , collecting water sample & 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 & installation of required capacity of single phase,50Hz,220V, deepwell submersible pump stainless steelbody, as per IS of approved make, suitablefor4"/6" tubewell with control panel startersuitable for submersible pump with dry run protection, connections, including clamp, borecapetc. as requiredasper specificationsbut excluding pipe, SS/Nylon wire rope and connection cable. 2HPwith20-22stages,headmetre147-42,dischargeLPM 15-55 pwd sor no. 39.1.12/101

Supplying, lowering of MS pipe as per IS:4270-2001 including MS Sockets having dimensions as per IS code duly welded with MS electrode to have extra strength to lower the pipe into tubewell bore. A) 100mm nominal diameter (weight 14.5 kg per metre) 5.40 mm thickness.