| 2 | OD55469/2022-2023:Supply and erection of Vertical Turbine pump set with the following specification<br>1, Pump set and accessories<br>Supply, erection, testing and commissioning of KWA pre-qualified reputed make ISI marked high efficiency type, self water lubricated above floor discharge type vertical turbine pump withbronze or Stainless steel impeller, SS Shaft, CI pump casing , MS Fabricated (minimum -8 mm ) flangedcolumn assembly with Stainless Steel strainer and all accessories conforming to IS 1710. The pump shallbe coupled with suitable vertical solid shaft motor specified in item No.2 Details are given below. <br>Theduty condition is as follows. <br>Discharge - 7320 lpm, <br>Total head - 79 mtrs.<br>Depth of well - 12m<br>Size of pumping main - 600 mm<br>Maximum length of column pipe -Below 1.5m<br>Casing -Cast iron or Stainless Steel.<br>Speed - Below 1500 rpm <br>Impeller-Enclosed type brozne LTB 2 orStainless Steel dynamically balanced as per ISO 1940 grade 3 standards<br>Sleeve -SS 304<br>Column shaft -SS 316<br>Pump shaft -SS 316<br>Bowl casing ring - Bronze LTB 2<br>Epoxypainted MS Column pipe of 8 mm thick flanged ends each having length below 1.5 meter. Strainerfabricated with SS 304. bearings for spider is made bowl synthetic rubber with outer brass / CI shell.Minimum Efficiency -suitable to Achieve minimum 70 % combined efficiency for pump and motor.(vibrations should be limited as per HIS 9.6.4.3 standards pump performance tolerance should be subjectto Hydrate institute standards class A - No negative tolerance is applicable in efficiency and no positivetolerance in power) <br> 2, Motor - Supply, erection, testing and commissioning of suitable rating highefficiency KWA pre-qualified reputed make Squirrel cage induction, TEFC, Vertical solid shaft motorsuitable for direct coupling with above pump having RPM Below 1500 or nearest capable to operate onvoltage -415 V (+ /- 10%) 50 HZ (+ /- 3%) AC 3 phase, 50 degree ambient temp rise . Conforming torelevant IS . Motor shall be energy efficient and supporting certificates to prove EFI or EF2. <br>3, Starter- Supply, erection, testing and commissioning of 400/440 V indoor,totally Enclosed,Dust tight and verminproof, suitable rating DIGITAL SOFT STARTER for the above motor with motor protections ( over voltageand under voltage,Under current, Over current, Locked rotor,Earth fault, Current Unbalance, singlephasing , Phase sequence reversal and Dry run protection ) with main contactor and bypass contactorand semi conductor fuses as per IE rules and code of practice etc. complete. The Starter panel shall befitted on a common base frame (height -50 Cm) on suitable Concrete foundation.<br> 4, Supply andfixing of suitable size best quality, ISI marked PN-1.6, heavy duty CI double flanged sluice valve as perIS-14846-2000<br> 5, Supply and fixing of suitable size best quality, ISI marked, heavy duty castiron,Double flanged Reflex non return valve as per IS 5312 suitable for the above pump set. Fitting ofvalves shall include proper RCC support especially for Non return valves. <br>6, Supply and fixing ofReputed make suitable size and correct range Glycerine filled pressure gauge with Steel Ball type StopCock, steel syphon tube and all accessories suitable for the above pump set. <br>7, Panel board -Design,Engineering, Supply, erection, testing and commissioning of medium voltage sheet steel clad,totally enclosed Dust tight and vermin proof,indoor floor or Wall mounted cubical type common controlpanel board fabricated out of 16 SWG mild steel sheet,air insulated and of adequate size as mentionedbelow,for operation on 3 Phase 4 Wire 415 volts,50 HZ, AC supply system consisting of 1 No. suitablecapacity and correct range MCCB as incomer and fitted with 3 Nos of indicator LED lamps, 1 No. voltmeter with selector switch, 1 No. Ammeeter(Correct range) with selector switch and Controlling Circuit 2AMPS C CLASS 1 POLE MCB s- 3 Nos etc. The switch board surface treated after de greasing, pickling,phosphating etc anti rust primer coating followed by two coats of spray paint of approved shade asstandard construction practice approved by the kerala electrical inspectorate standard and as standardpractice. The panel shall be fitted on a common base frame on wall or floor mounted (height-50 cm) withsuitable Concrete foundation.<br>8, Cabling work. <br>Supply, laying, termination, and connecting ofXLPE cable of Correct size and gauge, laid in cable tray suitable for motor as per the rules of ElectricalPRICE EST NO:2022/17844printed on 28-08-2022 22:32:28 page 2Kerala Water AuthorityP R I C Einspectorate including taking power connection from Main panel board to Sub Panel, starter and fromstarter to motor,capacitor for the above pump set considering energy conservation as per IEstandards.including termination materials such as gland, Socket, gland earth etc as per IE rules. <br>9,Supply of all materials and providing cable End termination of the XLPE cable of suitable size for givingpower connections to Panel Board, Starter,motor,Capacitor etc compleate as per IE Standards.<br>10 -PIPE Earthing<br>Supply and providing ISI Pipe earthing as per IS 3043 with 3 meter long 50 mm dia Cclass Galvanised iron pipe, providing GI funnel with well mesh at the top. Fixing 50 x 5 mm GI flat andwith 12x 10 mm bolt and nut at the top of the GI pipe. select an earth pit site atleast 1.5 metres away fromthe building foundation. Dig an earth pit of dimentions 1 m length x 1 m width x 3m deapth.place the GIpipe (50 mm dia C class having 3 m length and 12 mm dia holes) into the earth pit. filling around the GIpipe at a radious of 15 cm and to a height of about 15 cm with a homogeneous mixture of charcoal andsalt upto a height of 3 meter from the bottom. fill up the surrouding extra area with soil. including wateringand ramning , providing brick work masonary in 1:6 cement mortar at the top, Plastering the inside andtop of the manhole with 12 mm thick 1:6 cement mortar. fixing cast iron gully trap with CI covering at thetop. <br>Supply,laying and giving Earthing connections, terminations (Tin or Nickel Plated copper lugs) ofcorrect size of Copper Strip/Wires for Required length and Size for Double Earthing to Main panel board,Sub Panel, starter, motor,capacitor And Connecting to Existing Earth Bus and pit . All joints in earthingcounductors and earth bus shall be properly tinned or solderd etc as per IE standards. Earth conductor iscovered with PVC pipe 10 kg/CM2 to earth pit.<br>11 - Capacitor<br>Supply, erection, testing andcommissioning of Ultra heavy duty APP 440 V,50 HZ Box capacitor With capacitor Duty Contactor,MCB/MCCB, fixing stand connecting copper cables, termination etc for the motor to get a power factorabove 0.99 The capactior shall confirm to IS 2834/1986.<br>12 - Delivery Pipe connections.<br>Supplying,fabricating and erecting pumping header & Delivery pipe of required size with Yconnection and necessary joints made out of GI (c class) /Primer and Emulsion coated MS pipe ofthickness not less than 8 mm for a suitable length with required flanged joint and seating on supports asper site condition and as per the direction of departmental officers. Connecting valve with suitable flanges, nuts, bolts and IR sheet etc.complete and connecting the delivery side of the pump with the valves and suitable specials to connect with pumping main and leaking water from pump gland to becollected to 40 mm PVC pipe(16 kg/cm2) and discharged out side of the pump house at suitable place asdirected by the department officers. . <br>13 - Erecting the above motor pump set in suitable concretefoundation with M:30 mix NSBS of suitable and correct size (minimum height is 30cm) and reinforcement12 mm torsteel in mesh in all directions and fixing foundation bolt to suitable base of the pumpsets as directed by department officers. |
