Commissioning of 200 mm non-gravel packed production well at water supply scheme Dadsara under CDF (Tral Constituency).

Supply, Installation, Testing & Commissioning of Submersible Pumping Unit of size V6 (150 mm) as per IS 8034 with following specification are as under: PUMP: Efficiency = Not less than 50% Speed = 2900 Rpm Type of pump = axil flow Type of fluid to be handled = Clear Water MATERIAL OF CONSTRUCTION: Impeller = Stainless Steel Pump Shaft = Stainless Steel SS 410. Pump Casing = Cast Iron/Stainless steel IMPELLER: Impeller is of the enclosed type and properly balanced. Enclosed Impellers equipped with seal rings on their hubs. COUPLING: A suitable coupling arrangement provided with pump set. Non-Return Valve: Non-Return Valve of the suitable size provided above the pump discharge case. MOTOR: Method of starting = Star – Delta /DOL Speed = 3000 (Sync). Frequency = 50 ± 3 % Hz Working Voltage = 380-415 ± 15% V, 03 phase Efficiency = Not less than 90% Class of insulation = F/Suitable for above parameters Submersible motor should be water filled water lubricated squirrel cage type having capacity for above pumping parameters and working on 3 phase; AC supply ranging from 380 to 415 volts, 50Hz. The motor should be sealed by radial rings to avoid mixing of well water with motor filled water. a) The job includes providing and fitting of interlocking arrangement against any failure of coupling. It must be fabricated out of MS strips of suitable size and length. b) The job includes providing and fitting of appropriate size MS nipple 2 feet long threaded on one end and welded to same size MS flange of thickness (as per Table-17) at other end for column pipe as per site requirement. The threaded portion should be as per size of pumping out let for proper fixing. The job includes providing and fitting of R. I. cloth joints/rubber washers with nuts, bolts and washers for all joints of column pipe. The job also includes lowering of pumping unit in the well then proper testing and commissioning of pumping unit on full load at site. Note: Providing of test certificate & Characteristic Curve of pumping equipment is compulsory and pumping unit is to be approved from the concerned Sub Divisional office before procuring. Discharge = 5000 GPH, Head = 45 m Motor Rating: Not less than 7.5 HP Size of pumping unit : Not greater than V6

Fabrication, providing, fitting and lowering of column pipe conforming to IS: 1239 of length 10 Rft into the 200 mm casing dia. production well up to the desired depth; The job includes Providing and welding of flanges conforming to IS: 6392, Table-5 and PN 16 to these pipes and welding of flanges in two layers to make the flanged joint strong and leak proof. The pipe of 10 ft length is to be weld on both sides with flanges using welding rod of reputed make. The job includes all types of skilled labours, arrangement of power supply/ diesel Generator set etc required for the job including P/F of suitable size nuts bolts and R.I Gasket in the flanged joints of column pipes. The job further includes cutting of 2 No. rectangular cable slots in each flange. Size : DN 65 Class: C (Heavy)

Providing/supplying and fitting of G.I flanged Rising Main at site. The Pipe shall be hot dip Galvanized, class-C confirming to IS 1239. The job includes providing and fitting of M.S Flanges conforming to BIS 6392/1997 Table 17 (Rating PN16). The flanges shall be double welded both from inside and outside of the pipe using standard electrode of reputed make. Flanges (as per IS 6392/1997 Table:17) Thickness shall conform to IS 6392 Part 1st Table-17. The flange welding shall be carried out in double layers using reputed make electrodes to form strong welding joint. Welding Electrode: DC Arc Welding using welding electrode having diameter not less than 4mm. Nuts and Bolts: Nuts and Bolts (conforming to IS:1363 Part 1st) Rubber Insertion Gaskets: Rubber Insertion Gaskets (conforming to IS: 638/79) to be used between flanged joints. The rising main is to be laid as per the instructions of the engineer in charge and site requirement. Size : DN 80 mm Class: C (Heavy)

Earth work in excavation by mechanical means in trenches for foundation, drains, pipes, cables (not exceeding 1.5 m in width) and for shafts, wells, cesspits and the like not exceeding 10 sqm on plan, including dressing of sides and reaming of bottom lift upto 1.5 m, including getting out excavated earth and disposal of surplus excavated earth as directed. in all kinds of soil - 01 meter from cutting edge

Filling available excavated earth in trenches, plinth, sides of foundation etc. in layers not exceeding 20 cm in depth, consolidating each deposited layer by reaming and watering, lead upto 50 m and lift upto 1.5m.

Providing and laying of stone soling including manual compaction .

Centering and shuttering including strutting, propping etc. and removal of form work for: Foundation, footings, bases for columns.

Providing and laying in position cement concrete of specified grade including curing but excluding the cost of centring and shuttering, all work upto plinth level with 1: 2 : 4 mix (1 cement , 2 coarse sand , 4 graded stone aggregate 20 mm nominal size).

Fabrication, providing and fitting of long radius 90-120 degree bend/elbow to be fabricated out of G.I pipe, 1 m length and flanged on both ends a to make it leak proof. The flanges shall be M.S Flanges conforming to BIS 6392/1997 Table 17 (Rating PN16) and welded on both sides. The job includes nuts, bolts, gaskets etc as per site requirement. Size : DN 80 Class: C

Cutting of hot dip galvanized G.I, pipe across the section by dint of pipe cutter/ gas cutter. The job also includes Providing and welding of M.S flanges to the two ends of pipe. The Thickness of flange shall conform to IS 6392 Part 1st Table-17. The flange welding shall be carried out in double layers using Advani/Esab/L&T- SS Bond make electrodes to form strong welding joint by dint of DC arc welding. The job further includes Providing and Fitting of nuts and bolts (conforming to IS:1363 Part 1st) and Rubber Insertion Gaskets (conforming to IS: 638/79) to be used between flanged joints. The size of the pipe is given below: DN 80, Class-C.