Supply of motor and fittings new lift well at bethaniyapuram pumping station in ward 63

Supply and delivery of submersible centrifugal sewage non-clog pumps, vertical spindle type pump , wear resistance with submersible motor for the various duty conditions. Pump shall be capable of handling min 100 mm solid size with sewage specific gravity of up to 1.05. Pump shall be of robust construction, Liquid passages shall be finished smooth and designed as to allow free passage to solids. Pump Impeller should be of Non-clog semi open type , single vane / multi vane preferably contra bloc or vortex impeller design. Double mechanical seal with silicon carbide faces should be provided to protect the motor from ingress of sewage along the shaft. The critical speed of the rotor shall be at least 30% above the operating speed. Pumps should have double bearings between the pump & motor. The bearings life shall be minimum 100,000 hrs of operation with greased for life. Pump should be provided with automatic coupling device including pedestal, duck foot bend, stainless steel guide pipe or related accessories of suitable size to facilitate lifting and lowering into guide rails for easy maintenance. Pump shall be provided with a stainless steel lifting chain conforming to BS 970 Gr 304. Pump speed shall be of 9600 rpm for high duty pumps and 960/1450 rpm for low duty pumpsets. Casing and impeller should be of CI Gr. FG 260:IS210 more preferably with hardened impeller.Shaft should be of stainless steel AISI 410. All the fasteners and bolts shall be of AISI 410.The submersible motor shall be operated with 3ph, 415 V(+or– 10%), 50Hz(+or-5 %) dry induction type. Motor shall be capable of giving rated output without reduction in the expected life span when operated continuously. The rotating assembly shall be dynamically balanced as per standards. The starting current of the motor shall not exceed 200% of rated full load current for Star / Delta or ATS starting under any circumstances .The motor shall be suitable for full voltage star delta / ATS starting. The locked rotor current of the motor shall not exceed 600% of full load current unless otherwise specified. Motor shall be designed to withstand 120% of rated speed for two minutes without any mechanical damage, in either direction of rotation. The motor vibration shall be within the limit specified in applicable standards . Motor should be of IE2, explosion proof compatible for VFD operation together with star-Delta /ATS starter, protection against increase in stator winding temperature (15 deg Celsius), bearing temperature, leakage in the stator housing and terminal box shall be provided and to be suitably interlocked with the control panel for tripping the pump in case of increase in temperature beyond set limit. Insulation class shall be of “Class H” and degree of protection shall be of IP 68 as per IS 4691. Motor shall be suitable for continuous operation in fully submerged or partially submerged condition.The pumpset shall be supplied with power cable of PVC insulated and PVC sheathed, copper, flexible, round type with required conductor size and number of cores as per starting method and of specified length for continuous use under water and air. The control cable of PVC insulated, PVC sheathed, flexible for stator winding temperature sensor 3core x 1.5 sq.mm copper conductor and for bimetallic switches 2core x 1.5 sqmm copper conductor shall be provided. Motor shall be supplied with 10m of round submersible copper cable of suitable size.The non clog submersible pumpset shall be provided with suitable starter control panel having all protections as mentioned above. (upto 5 HP - DOL Starter, above 5 HP to 25 HP -Star Delta Panel and beyond 25 HP shall be ATS) Twad P-135 24/25 above 15m upto 20m head Discharge upto 100 to200 m³/ hour

Supply of Ductile Iron Class PN10 Flanged pipes as per IS 8329 / 2000 150mm dia. 2.0 m length of pipes Twad P-36 24-25

150mm dia.1.5 m length of pipes Twad P-36 24-25

Manufacture, Supply and Delivery of DI D/F Slanted seat Swing Check Valve. Body of ductile cast iron GGG 40/45/50 or equivalent grade and disc of ductile cast iron GGG 40/45/50 with fully encapsulated EPDM rubber, where both faces can be used. Electrostatic epoxy powder/ liquid coating (EP-P) inside and outside color blue RAL5005 with minimum coating thickness of 250 microns. The EPDM rubber and Epoxy powder should be approved by W 270. (EP-P) it is a resi coat powder approved for drinking water application, applied through fusion bonding process by dipping the shot-blasted casted components heated upto 200 deg C). Face to face dimensions as per EN558-1, series 48 and flange connections as per EN 1092-2 / IS 1538. 150mm dia. DI Non Return valve Twad P-65 24/25

Supply and delivery of DI D/F Gate valves (soft seated) resilient seated soft sealing gate valves (sluice valves) with body bonnet of ductile cast iron of grade GGG 40/45/50, or equivalent grade wedge fully rubber lined with EPDM, replaceable spindle nut, without gland packing and with 3 O-Ring protectionon the shaft and seals of NBR and the valves should be of vaccum tight and 100% leak proof with face to face dimensions as EPR BS 5163 - 89/ ISI 14846 - 2000/ DIN 3202 F 4. All the valves should be with electrostatic powder COATING BOTH INSIDE AND OUTSIDE WITH POCKET LESS STRAIGHT THRO' BODY PASSAGE. aLL THE VALVES ARE TO BE COMPATIBLE FOR BURRIED APPLICATION WITH PRESSURE RATING pn 10/16. 150mm dia. DI D/F Gate Valves Twad P-66 24/25

Labour charges for the erection of submersible pumpset in borewell/openwell 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. includind 50HP

Labours charges for pipe fitting work Fitter Class I

Fitter Class II

MS BOLTS AND NUTS

Add GST 18%