| 2 | A) Design, providing, installation, testing and commissioning of 5 cusec discharge x 35 mtrs head VT pump set along with compatible slow speed prime mover having suitable lubricating arrangement and conforming to IS 1710with latest arrangement after dismantling, extracting the old pump of unit IV.The pump shall be capable of delivering the 05 cusec discharge against the lift of 35 mtrs head. The pump shall be suitable for satisfactory performance in every respect as per site conditions and the characteristic curves shall remain stable under all conditions under requisite discharge and climatic conditions having material of construction as detailed below:-i Impellers : Stainless steel(AISI-410) the tenderers shall conform that the material of the impeller specified above shall be suitable in every respect for type, duty and quality of raw waterii Line shaft/ line shafts sleeves : Stainless steel (AISI-410)iii Pump shaft/ impeller shaft : Stainless steel (AISI-410)iv Bowl and Bell mouth : Nickel cast iron having 1.5 to 2% nickel at tensile stress of 18kg/cm2 and specific gravity of 7.8 as per IS 210v Column pipes complete as per site condition. : Steel as per IS: 210 of 1978/Grade A of IS:2062 1984 with latest amendments and IS: 4270 vi Wearing ring : Stainless steel (AISI-410)vii Nuts and Bolts : High tensile steelviii Stuffing box : Steel as per IS: 210 of 1978/Grade A of IS:730 of 1982 with latest amendmentsix Line shaft coupling : Steel as perIS1030 of 1982 withlatest amendmentx Other component : Conforming to IS 1710 with latest amendments for such duty, head variations and quality of raw waterVertical wet pit turbine or mixed flow pumps for above ground level discharge having suitable lubricating arrangement and conforming to IS 1710 with latest amendments. Thepumpshallbeprovidedwithnonreverseratchetmechanism.The ratchet shall be either ball or pin type and should have adequate strength to prevent the reverse rotation of the pump due to the back flow of water when the pump is shutdown. The pumps shall have suitable priming system for smooth operation. Suitable air release valves as per requirement in the discharge elbow shall be provided to release the air entrappedinthepumpelbowandcolumnpipetopreventanyoverloadingofthe motor due to shut off caused.OTHER PARAMETERS FOR SELECTION OF SUITABLE PUMPS/MOTORS :-Capacity of pump – 5 CusecTotal Head – 35 metersMaximum Pump speed –1500 RPMColumn Length – suitable for 11.5 meter sump depthDia of Column Pipe – As per design of pumpDia of bell mouth – not more than 3 00 mmMake of pump: Kirloskar, Mather Platt, Jyoti,wpil Specification of motor;-Voltage – 415+/- 10% 3 phase AC Frequency – 50Hz +/- 5%Insulation – class FDuty – S1- continuousAmbient temperature – 0-500 CMake of motor: KIRLOSKAR/GEC/SIEMENS/JYOTI/CROMPTON/ABB/wpilCapacity of motor: As compatible to the discharge of thepumpThe job includes unloading the material by using heavy duty crane, skilled labour and stacking it near road side. Carriage of material inside the pump room by head load using skilled labour, tools and tackles.Fabrication and fitting of MS base plate of 32”x32” sizes of 20-25mm thickness on the existing foundation girder having provision for mounting the pump and motor on them to counter any vibrations of pumping units after checking proper levelling at LIS KatalBatal.Lowering of new pump set by way of lowering pump assembly with line shaft, column pipes and spider sets. Connecting the column pipes by using superior quality fasteners/flanging and line shaft with requisite socket. Lowering all the column pipes with allied material including sleeves. Fitting of the top shaft, fitting of discharge head connecting the delivery line to rising main by way of fabrication work and by P/F of 10” dia sluice valve, reflux valve 01 no each along with new nuts, bolts, gasket joints, flanges and reducer if required. The job may involve amendment in the delivery line/manifold as per requirement by way of cutting, fabricating and welding at site. Providing and filling of M.oil in the ratchet assembly, fitting the motor and connecting it with pump through motor stool and coupling pulley. Providing, installation, testing and commissioning of dry type star delta auto starter/ panel( L & T / Havells make) of appropriate HP having all protections suitable to run the 05cusecx35mtr head pump (L & T / Havells make) at LIS Katal Batal for new pumping unit. The starter panel should consist of sheet metal enclosure inclusive of single phase preventer, 3 no. contactors of appropriate rating, relay, timer, one no. voltmeter, one no. ammeter, on /off switch, phase indicators etc. The panel should have bus bar distribution faculty for unit 1, 2&3 also. Giving all the electric connections from motor to panel by way of P/F of 50mm2 multi strand copper cable of 50mtrs length approximately along with thimble of appropriate rating/size and complete insulation. Also P/F of 70mm2 multi strand copper cable of 30mtrs length approximately along with thimble of appropriate rating for giving connection from stabilizer to panel testing on full load.Complete job. includes cost of material including rebate on old scrap excluding pump and motor, consumable, handling, loading, unloading, transportation charge, labour charges for both skilled /semi-skilled labour and hiring charges for Crane , tripod stand, tools and tackles required during the execution of the job at site and shifting of extracted old pumping machinery to divisionalstore MID or any other suitable store as directed by executive engineer at Jammu |
