Repairing of 05 cusec split casing pumping unit and other works at Lift irrigation scheme Hamdara of MISD Pattan.

Amount

Mechanical transportation, loading, unloading and handling of pumping unit using Load carrier auto, mini van or similar vehicle from site to workshop or from workshop to site after carrying out necessary repairs

Complete dismantling of single stage horizontal pump unit (all types) by way of: Disconnecting all leads from the motor and marking the terminals, uncoupling of motor from the pump. Disassembling, dismantling and segregation of various pump parts such as shaft and sleeves, impeller, gland, fasteners, etc.

Cleaning of bowl assembly components of horizontal pumping unit throughly with K-oil & wire brush for inspection of damages if any.

Rebuliding of bearing seats ad then machining to the required size for proper fitment of bearings.

Re-metalling/Re-building of pump shaft by way of welding its worn out/damaged portion using M.S electrodes by an arc welding method, finishing the welded portion to proper size/shape as per sample by turning the shaft on lathe by engaging a skilled operator. Job also includes providing and fitting of M.S check nut as per sample.

Providing and fitting of new bearing 6309 (make ZKL/ARB/NBC)

Manufacturing, providing and fitting of SS (AISI-410 or IS 1030) check nut/ impeller adjusting nut with proper locking arrangement as per sample available.

Fabrication, turning, finishing and fitting of Stainless steel-410 shaft sleeve as per old sample.

Fabrication, Providing and fitting of MS Gland as per old sample.

Providing of AP3 Grease (Preferred makes: Castrol/ HPCL/ Indian oil/ BPCL/ Caltex)

Providing and fitting of assorted size nuts and bolts to pump housing

Complete assembling of single stage horizontal pump (all types) after cleaning of all parts throughly with petrol, coupling and alignment with motor, connecting of motor leads and testing on full load.

Mechanical transportation of old damaged parts to divisional store using Private car, auto-rickshaw or similar

Fabrication, Providing and fitting of 250mm dia MS flanged foot valve with following specifications: Foot vale body diameter to be in proportion to the pipe dia as per the relevant IS code Overall length= 550mm Body thickness = 5.6mm Thickness of seat plate = 16mm Thickness of flanges = 12mm Thickness of flange for resting of seat = 12mm The foot valve shall be provided and fitted with strainer fabricated out of 12mm square bars 300mm length and 50mm mesh gauge .The Job also includes applying of corrosion resistance primer in two coats followed by two coats of black bituminous paint in two coats

Providing and fitting of TC-15 coupling by way of: • Drilling/boring of new coupling as per size by turning it on lathe by engaging a skilled lathe operator. • Cutting of groove for cotter pin as per sample. • Fabrication of cotter pin as per sample. • Shifting of new coupling to site, installing the same by P/F of rubber tyre, coupling bolts, nuts and washers. Job includes proper alignment of coupling by an expert so to avoid damage to pumping machinery due to misalignment besides testing of unit on full load at site.

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