Providing Drilling Of Borewells With Power Pump Ward No 9 V Thotti Govindaraj nagar Ward No 01 Co Operative nagar Ward No 10 Panchayat Board Street Ward No 05 Kummarakuppam and Ward No 11 Cuddalore Road Sri balaji Nagar in Valavanur Town Panch

Providing Geological Survey Part 150mm Dia Vertical Bore Well From Approve Institution Includig all Cost And Convince and all labour charges etc.complete

Drilling of borewells any where in Tamilnadu including transportation from one place to another within the above Districts in alluvial soil or sedimentary strata of clay and sand stone, shale, pebbles boulders etc. By first taking a pilot bore of 160mm / 200mm dia and then enlarging to required dia by direct or reverse rotary mud, circulation method, using Rotary rigs, fuel, labour and drilling bentonite and water required for drilling at site. Site will be shown by the TWAD Board officers including construction of mud pit.

Reaming from 160 200 mm dia pilot bore to 300mm dia bore as directed by the TWAD Bd. Officers.

Labour charges for inserting PVC casing pipes assembly (with slots or without slots) in the drilled hole including jointing the pipes with PVC couplers with cement paste etc. complete. Supply and packing the annular space with pebbles of size and quality as approved by the Executive Engineers TWAD Board.

Charges for developing the bore wells with Air compressor of 600 CFM capacity (minimum 8 hours) including transportation labour and fuel charges for compressor as directed by TWAD Board officers and conducting yield test by "V'' Notch method.

Supply and Delivery of unplasticised for plain PVC Casing pipes for the following dia in 3m length with screwed and Socket ends and centering guides for every 15m length of pipes as per IS 12818/1992 and as amended from time to time to suit deep borewells upto 80 m to 250m depth (CM) for delivery at site within ISI marking including loading unloading, freight, transit insurance and inclusive of all taxes etc complete. CM 200mm PVC plain casing pipes. Plain Casing Pipe

Slotted Casing Pipe

Supply and delivery of clear water vertical wet type submersible pumpset conforming to IS 8034/2002 as amended thereafter and BEE 3 Star Rated capable of discharging noted LPM against head of water column due to all causes. The pump shall be with stainless steel shaft and dynamically balanced bronze or Cast SS impeller, brass screws and CI FG 200 grade pump bowl/diffuser with ISI mark. The pump shall be directly coupled to a continuos rated two pole suitable wet type vertical squirrel cage induction motor asper IS 9283 /1995 as amended there after, suitable for operation in AC three phase 415 V+/-10%, 50HZ +/- 5 %

Labour charges for the erection of submersible pumpset in borewell including fixing and jointing submersible cable with proper clamps upto the starter to required depth and also fixing of riser pipes to the required depth valves erection clamps, pressure gauges upto the exterior wall of pump room and erection of panel board consisting of TPICN switches starter, Voltmeter, Ammeter, three pilot (indicating) lamps capacitor single phasing preventor, water level guard and laying and jointing the cables and twin earthing as per IE rules etc., complete and testing the pumpset and trail run for 10 days.

Supply and delivery of Star-Delta starter confirming to IS 13947 and IEC 947 suitable KW rating for operation in AC/ three Phase/50HZ(+/- 5%) and 415V (+/- 10%) including 3 pole magnetic contactor with under voltage release - 3 nos., CT operated Ammeter (65 mm dia) with suppressed scale, Voltmeter (65mm dia), Voltmeter selector swicth, Minature circuitr braeker, Thermal Overload relay, Air Break contactors suitable for next Standard higher KW rating, Single phasing preventor, dry running preventor and On/Off Push button switches, wiring with 1 sq.mm/4 sq. mm copper pvc insulated cable, powder coated vermin proof box, including the capacitor(the cost of capacitor is to be taken separately).