MID/AN/29

Strengtheningby way of replacement of damagedcomponents of K.S.B make 40 mtrs head, 3 cusec discharge with 85 H.P, K.R.T.K Submersible motor-pump unit with re- installation at L.I.S DabbarPothaby Extraction of Motor-Pump Unit from the Sump tank of L.I.S DabbarPotha by way of dismantling the complete pump set from delivery pipe. Extracting the pump set with the help of manually operated chain pulley block fitted with gantry from the sump & placing it at a suitable place at the top of the Sump tank. Shifting of pump set from top of the Sump tank of L.I.S. DabbarPotha to the bank of the river at a height of approx. 10 feet with the help of chain pulley block and moving trolly fitted with gantry at site. Loading of pump set in a tractor trolley from the bank of river near the Sump tank after crawling/dragging pump set manually with the help of skilled/unskilled workersthrough a distance of 25 mtr. upto loading point and then shifting to DabbarPotha through river side path approx. 1 Km through tractor trolly and then further shifting to pick up van with the help of chainpulley block fitted on gantry after lifting/lowering at dabberpotha destination nearby road side workshop with the help of pickup van/mechanical transportation. Job including all types of carriages, loading & unloading, as well as hire charges of the vehicle. Dismantling of K.S.B make 85H.P, K.R.T.K Submersible Motor Pump Unit No.2at workshop for repairing motor and pump components. Complete overhauling of pump with fabrication and fitting of 01 No. gun metal wear ring of pump casing, 01 No. chuck nut, 1 No. guide bush and 01 No. steel space bush, 01 No. mesh seal oil rings along with rebuilding of 01 No. 356 mm multi channel Impeller by way of welding, turning and reconditioning. Providing and fitting of thrust plate, providing & fitting of silicon carbide mechanical seals of pump & motor side (02 Nos.), Strengthening of casing of pump of inlet & outlet diameters 150 mm of Nickel Cast Iron material.Rebuilding, reconditioning of worn out portions of 76 mm Dia. impeller shaft of material A.I.S.I-410(H&T) by re-metalling with special Welding electrodes in layers and then turning, grinding, polishing, finishing on lathe machine including rebuilding, finishing of key ways to true size. Also removing/checking eccentricity of impeller shaft with dial-gauge at various off sets. Removing deflection/eccentricity by heat treatment on hydraulic press. Removing deflection on heads/ends and then checking the alignment of the shaft on lathe machine. Providing &fitting of new fabricated cotter pins.Complete rewinding of three phase squirrel cage, 4– Poles, 85 H.P submersible motor by dismantling the rotor and stator and then rewinding completely with the original specified rewinding wire & F class insulation material. Providing and fitting of new motor bush housing one no. as per sample and specifications. Assembling of complete unit of submersible pump and motor, filling of oil and testing in the workshop. Shifting of submersible pump set from workshop after repairing to village DabbarPotha on the pickup van then lifting /lowering in the tractor trolley with the help of chainpulley block fitted on the gantry at dabberpotha destination neartby road then shifting the pump set to sump site through tractor trolley at L.I.S. DabbarPotha through river path and unloading. Shifting of submersible pump set (complete assembly) upto unloading point to the river bank near sump tank of L.I.S. DabbarPothaand then lowering to roof of the sump tank from the river bank with the help of chain pulley block and moving trolley fitted with the gantry at site with with the help of skilled/unskilled workers.Lowering of pump set complete assembly in the sump tank of L.I.S. Dabbar- Potha with the help of chain pulley block fitted with the gantry at site after dragging manuallyfor making the alignment then fitting of pipes, bends Job also includes cutting & removing of worn out gaskets with providing new one to avoid any leakages to pipes & bend fitted at the delivery of the pump at both the ends thenjointing/tightening the delivery pipe the pump to rising main.after p/f of new nutbolts instead of wornout Job also includesproviding all electrical connections and then testing, commissioning of pump set. Job including labour charges for skilled and semi skilled workers and cost of R.I. sheet joints. Complete Job.

GS ENGG WORKS

HITECH MECHNICALS