Repairing / overhauling to the Multi stage centrifugal pump of type RKB-150/34-5 stage of lift irrigation scheme Hardass Thang.

Amount

Repairing /Overhauling to the centrifugal multi stage pump of type RKB-150/34 -5 stage of lift irrigation scheme Hardass Thang by way of dismantling from foundation and the component likes pump bearings, bearing housing, adjustable washer, liquid deflector, distance sleeve, gland, o ring, shaft sleeve, delivery casing, tie bars, diffuser from the delivery casing along with "o" ring, removing of impellers and keys, removing gland packing from the stuffing box and take out the entire shaft out of suction casing along with shaft sleeve, distance sleeve, deflector. gland and inner race of roller bearing etc. the job also includes remove the pump from the base plate and dismantling of suction pipe, delivery pipes and carriage up to hardass bridge on head load to and fro. Cleaning and checking all parts thoroughly for wear tear and damage. Impellers, diffusers, casing, wear rings and inter stage bushes need to be replaced because it was drop in head and capacity of the pump is substantial. Rebuilding of damaged Guide Vanes by welding cast iron and grinding/finishing to the proper size. Removing the damaged inter stages lock , bush and providing and fitting of new studs, "o" ring. providing and fitting of long sleeve of size 73x90x160 mm (one no). providing and fitting of long sleeve of size 73x90x260 mm (one no). providing and fitting of impellel bushes of size 85x105x242 mm (4no,s). providing and fitting 0f neck ring colar (8 no,s). providing and fitting of impellal facing (4N0,s), providing and fitting of pump coupling, gland packing and greesing. The job also includes of complete assembling of all the components of pumps and fittings on the pump foundation and fitting of suction pipe, delivery pipe, electric connection and supply and testing and commission on full load for checking pump bearing temperature, discharge checking, pump alignment checking etc.

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