Supply, Installation, Testing and Commissioning of Electro-Mechanical works to be executed at water supply facilities of Hirpora Banimulla for source sustainability under UT Capex.

Supply, Installation, Testing & Commissioning of Submersible Pumping Unit as per IS 8034 with latest amendments having the specification as under:- PUMP: Discharge = 4000 GPH Head = 194 m Efficiency = Not less than 50% Speed = 2900 Rpm Type of pump : Mixed flow. Type of fluid to be handled: MATERIAL OF CONSTRUCTION: Impeller = Stainless Steel / chrome steel Pump Shaft = Stainless Steel SS 410. Pump Casing = Cast Iron IMPELLER: Impeller is of the enclosed or semi – 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 Speed = 2900 (Sync). Frequency = 50 ± 3 % Hz Working Voltage = 380 -415 ± 15% V, 03 phase Efficiency =As per IS 9283 (2013) with latest amendments. Rating = Not less than 25 HP Class of insulation = F/ B Submersible motor should be water filled, water lubricated squirrel cage type ,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 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 65 mm diameter 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.

Supply, Installation, Testing & Commissioning of Submersible Pumping Unit as per IS 8034 with latest amendments having the specification as under:- PUMP: Discharge = 4000 GPH Head = 250 m Efficiency = Not less than 50% Speed = 2900 Rpm Type of pump : Mixed flow. Type of fluid to be handled: MATERIAL OF CONSTRUCTION: Impeller = Stainless Steel / chrome steel Pump Shaft = Stainless Steel SS 410. Pump Casing = Cast Iron IMPELLER: Impeller is of the enclosed or semi – 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 Speed = 2900 (Sync). Frequency = 50 ± 3 % Hz Working Voltage = 380 -415 ± 15% V, 03 phase Efficiency =As per IS 9283 (2013) with latest amendments. Rating = Not less than 30 HP Class of insulation = F/ B Submersible motor should be water filled, water lubricated squirrel cage type, 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 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 65 mm diameter 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.

Fabrication, providing, fitting and lowering of C class column pipe conforming to IS: 1239 of length 10 Rft into the sump; The job includes Providing and welding of flanges conforming to IS: 6392, Table-17 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 labors, 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. Any modification to the column pipes /flanges required during lowering is included in the job. Size : DN 65 Class: C (Heavy)

Providing/supplying and fitting of G.I flanged Rising Main– The Pipe shall be hot dip Galvanized, class C class Heavy pipe 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 main technical specifications of the pipe are given here under: Size: DN 65mm Class "C" Heavy

Providing, fitting, testing and commissioning of ARV (Air Release valve) as per IS 14845 to be fitted to G.I rising Main. The ARV Shall have the following specifications: - i. Valve type - single chamber, single/double orifice. ii. End connection - flanged ends to IS 1538 iii.Working temperature - 45oc to -150 c iv. Test pressure - body / seat 2.5 x PN v. Sealing ring - EPDM vi. Construction - ductile iron with stainless steel floats vii. Coating - epoxy with corrosion resistance Besides the above works, The job also cost on account of P/F R.I gasket, GI Pipe, nuts and bolts required for installation of ARV and arrangement of gas cutter/ welding set at site. The Test Certificates of Air Release Valves mentioning the Material of Construction as above duly stamped by OEM shall be provided at the time of supply of material. Size : DN 50mm Rating: PN16

Earth work in excavation by manual means in trenches for foundations, drains, pipes, cables etc. (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 ramming of bottoms lift upto 1.5 m, including getting out excavated earth and disposal of surplus excavated earth as directed: All kinds of soil- 1m 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 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). The job also includes all the necessary head load

Fabrication, providing and fitting of split type MS clamps 10 mm thick, 2 ft long and 3 inch wide for lowering and holding of pumping unit fitted. The job includes the cost of required size of nuts and bolts. (Pair) Size : 65 mm

Fabrication, Providing and fitting of 90-120 degree bend/elbow to be fabricated out of Class C GI pipe with M.S Flanges conforming to BIS 6392/1997 Table 17 (Rating PN16) fastened with welded jointson three ends. The job includes nuts, bolts, gaskets etc complete. Size : DN 65, Class C