Providing Re-Drilling Flushing and Deepening of Existing borewell and Erection of submersible motor at Ward No. 14 Thendal Nagar in Hosur City Municipal Corporation

Rate for flushing of borewell of 6" dia requiring less than 4 hours operation using drill rods/ hose with required size of pipes for various capacity compressor including transportation, labour, and fuel charges for compressors as directed by the TWAD Officer and conducting yield test by 'V' notch method if required.

Drilling 150mm dia vertical Borewells in Hard rock areas to anywhere in tamilnadu Including transportation to the work site as diricted by the depetmental officers…Etc.. IInd depth 210m to 240 m

From 240m to 270m

From 270m to 300m

From 300m to 330m

Supply and fixing of 150mm PVC casing pipe as per IS 12818/2010 etc, complete as per standard specification(Casing shallow depth up to 80 mtr)

Labour charges for inserting of 150mm Dia PVC casing pipes assembly( with slot or without slot) in the drilled hole including Jointing pipes with pvc couplers with cement paste Etc.. Complete,supply and packing the annular Space with pebbles of sixze and quality as approved by the Excutive Engineers of TWAD Board.

Supply and delivery of clear water vertical wet type submersible pumpset suitable for 150mm dia borewell 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 continous rated two pole suitable wet type vertical squirrel cage induction motor as per IS9283 /1995 as amended there after, suitable for operation in AC three phase 415 V+/- 10 %, 50 HZ +/- 5 % Duty lpm x m (75x 275) 10 Hp

Supply and delivery of Star-Delta starter confirming to IS 13947, IEC60947-1 and as amended thereafter with 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 switch, Miniature circuit breaker, 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). 10 Hp

Supply of 63 Amps Porcelain fuse unit (500 V)of best quality make including cost of handling charges and all other incidental charges.