Renovation of Deep Tube well No 7 at BTPS Plant

Drilling bore hole of 55cm. Diameter from G.L. by reverse circulation rotary rig method in any kind of soil & withdrawing the same including all materials, labours as may be required as per direction of EIC. From G.L. & up to 50M below G.L

Drilling bore hole of 55cm. Diametter from G.L. by reverse circulation rotary rig method in any kind of soil & withdrawing the same including all materials, labours as may be required as per direction of EIC. Between 50 M & up to 100 M below G.L.

Drilling bore hole of 55cm. Diameter from G.L. by reverse circulation rotary rig method in any kind of soil & withdrawing the same including all materials, labours as may be required as per direction of EIC. Between 100 M & up to 150 M below G.L

Drilling bore hole of 55cm. Diameter from G.L. by reverse circulation rotary rig method in any kind of soil & withdrawing the same including all materials, labours as may be required as per direction of EIC. Between 150 M & up to 200 M below G.L

Supplying, fitting, fixing & jointing (by welding or otherwise) of tube well assembly pipes at site, as directed by the EIC & lowering the same into borcholes, including cutting the E.R.W.pipes to required length & threading, painting of the whole assembly with two coats of bituminous paints complete.300mm(NB) ERWMS black pipe, SAIL/TATA/JINDAL make (housing pipe)of 8mm wall thickness(min).

Supplying, fitting, fixing & jointing (by welding or otherwise) of tube well assembly pipes at site, as directed by the EIC & lowering the same into boreholes, including cutting the E.R.W. pipes to required length & threading, painting of the whole assembly with two coats of bituminous paints complete.200mm(NB) ERWMS black pipe, SAIL/TATA/JINDAL make (well pipe) of 8mm wall thickness(min).

Supplying, transporting to work site of 200mm dia. Fiber glass slotted strainer, with suitable wall thickness to match with blank pipe of approved quality, fitting, fixing and jointing M.S. Male/Female adapter or otherwise as directed by EIC & lowering the assembly to the required depth/ length of the bore hole etc. all complete.

Supplying, fitting, fixing including fabrication with all necessary materials & painting two coats of bituminous paints and lowering in position complete for the following: Reducer for 300mm N.B. X 200mm N.B.

Supplying, fitting, fixing including fabrication with all necessary materials & painting two coats of bituminous paints and lowering in position complete for the following: Centre guide for 300mm N.B. housing pipe of 10mm thickness.

Supplying, fitting, fixing including fabrication with all necessary materials & painting two coats of bituminous paints and lowering in position complete for the following: Threaded top cap for 300mm O.D., 10mm thickness.

Supplying, fitting, fixing including fabrication with all necessary materials & painting two coats of bituminous paints and lowering in position complete for the following: Bottom plug for 219mm O.D., 10mm thickness (without ERW MS Blank Pipe).

Supplying, fitting, fixing including fabrication with all necessary materials & painting two coats of bituminous paints and lowering in position complete for the following: Male - Female adapter for Fiber glass strainer (Extra)

Packing the annular space, around the assembly pipe as well as black pipe with clean, washed gravels (size 2.5mm to 5mm) of approved quality including supplying washing, cleaning, transportation to site etc. as per direction.

Charges for packing the annular space around the housing pipe portion at top with puddle clay as directed.

Development of tube well with all necessary equipment viz. air compressor / over rated turbine pump of 03 cusec. Capacity, air pipes etc. including giving final drawdown with venturimeter / orifice meter as per specification complete as per direction of EIC (Pumping for development of tube well is to be taken up till sand free water is obtained).

Yield test of the new tube well with all necessary equipment & vertical pump after 08 hours of continuous pumping per day upto a period of five days.

Electro logging of the bore hole with all necessary equipment to assess ground water potentiality.

Transportation cost of drilling equipment and accessories rig machine etc. including cost of fuel, lubricant & loading unloading the materials from store/stack yard/suppliers godown and unloading/ stacking the same at site (up to 60.0 km distance)

Housing Clamp (900mm X 10mm X 50mm)

Bentonite Clay Powder(Each bag containing 50Kg bentonite)

8 inch & 12 inch ring for strengthening of welding of pipe joints

Resistivity Test before Tube Well boring