Major overhauling to 45 CUSEC, 12 M HEAD (KBL MODEL BHM 50M) Vertical Turbine, 12 m dynamic head pumping unit no 1st at lift irrigation scheme Janbazpora Stage 1st .

Amount

Dismantling of 45 cusec pump and 300 HP three phase induction motor from its installed position by way of decoupling of pump motor assembly, extraction of bearing housing assembly, lifting and disassembling of discharge head from base plate, extraction of flanged column pipes by way of unscrewing/cutting rusted nuts and bolts by gas cutter and unscrewing/cutting of screw couplings of shafts one by one in a careful manner and then lifting of entire bowl assembly. The job involves using of highly skilled labour for careful disassembling of pumping unit which requires both skill and patience. Shifting of disassembled parts in private load carrier to work shop for repairs.

Manufacturing, providing, fitting of bronze split packing Gland, bronze brackets, lantern ring, studs, nuts etc and providing of ½ sq. inch packing as per sample.

Repairs to the head shaft assembly by way of : Manufacturing, providing, fitting of SS 410 head shaft sleeve fabricated out of solid SS cylinder as per requirement. The job includes boring, turning, facing, finishing, balancing operations on lathe using skilled operator as per sample. The sleeve shall be shrink fitted to head shaft.

Repairs to the Bearing spider (centre kit) by way of providing, fitting of Cutless bush of neoprene rubber in bronze shell as per requirement.

Repairs to intermediate shaft assembly by way of : Manufacturing, providing, fitting of SS AISI 410 shaft sleeve fabricated out of solid SS cylinder as per requirement. The job includes boring, turning, facing, finishing, balancing operations on lathe using skilled operator.

Revamping of the pump bowl assembly by way of: Rebuilding, patching of worn out, damaged portions of bowl by way of weld deposits with CI electrodes and machining to original shape. Reconditioning of worn out portions of impeller by way of rebuilding with bronze filler materials and then machining to original shape/profiles and balancing of same. The job requires excellent workmanship. The job also includes manufacturing, providing and fitting of SS impeller nut, SS key, lock washer to impeller where ever necessary as per sample.

Manufacturing, providing and fitting of bronze bearing bush for bowl assembly as per requirement.

Providing fitting of bowl bearing of neoprene rubber in brass shell as per requirement.

Manufacturing, providing and fitting of bronze wearing ring to impeller as per sample.

Design, manufacturing, providing, fitting of robust basket-type strainer fabricated out of 12mm mm round steel bars and GI mesh. The strainer shall be painted with two coat of bituminous paint.

Back carriage and reassembling of entire pumping unit in a sequential manner for proper fitment and alignment of mating parts at site. The job involves providing and fitting of nuts, bolts of assorted sizes for column pipes, discharge bend, base plate. The job involves providing and fitting of neoprene O-rings to column pipe flanges wherever necessary. The job includes the cost on account of labour charges for both skilled, semi-skilled labour, carriage charges, head load charges, hiring charges of tools and tackles, gas cutter, connecting three phase power supply and testing on full load. (Note: The old damaged bearings/scrap shall be returned to divisional store )

M/s BUHROO MECHANICAL WORKS

Rehaan Engineering Works