supply, installation, testing, trial run and commissioning of 1 number of 50 hp submersible axial flow pumpsets at vettakkal b padam in cherthala lac, alappuzha district , supply, installation, testing, trial run and commissioning of submersible axial flow pumpset with the specifications listed below: suitable for handling silty fresh and salty water with rpm 960 ( syn ) or less. the material of construction of the casing, suction bell shall be cifg 260 with 2% nicl, impeller cf8m ( ss ) with ss 316 or asi shaft, vertical submerged column pipe should be of ss 304 and horizontal delivery pipe ( varies from 4 to 6 m length as per site conditions ) of ss 304 with 6 mm minimum thickness.a metallic non-corrosive strainer of mesh size not more than 50 mm x 50 mm should be fitted at mouth of suction column.any hanging portion of the delivery pipe should be supported with suitable metallic supporting frames or rcc pillars of suitable size as per site requirements.the prime mover for the pump should be 3 phase totally enclosed water cooled squirrel cage submersible induction motor 415v+ / - 10%, 50hz+ / -5% connection with “f” class insulation, cubicle type panel board with all necessary protection units and instrumentation.auto transformer starter of reputed make, mccb including suitable metering, led indications, selector switch, single phase and dry running preventor suitable capacitor etc, wiring and earthing should be as per cable about 20.00 m length or as per site requirement.a screen with 6 mm gi welded mesh with 50 mm x 50 mm opening size, ( about 20 sq.m area ) framed in gi angles and gi tubes shall be fitted at the opening on top and side of sump to prevent entry of unwanted materials to the pump through inflow water. the rate quoted should inclusive all the charges for supply, installation including petty civil works, trial run and commissioning, all type of transportation and conveyance, loading and unloading charges, factory testing etc. excluding gst , 1. duty point head ( m ) : 2.5 2. minimum discharge at duty point head ( lps ) : 825 3. working head range ( m ) : 2 - 5 4. working discharge range ( lps ) : 835 - 750 5. minimum overallefficiencyat duty point head ( % ) : 70 6. connected load available ( hp ) : 50