MTPS I CA CWS II Complete dismantling inspection overhaul including renewal of worn out pump components and assembling in any 2 Nos CWPs of stage II

Amount

Charges for dismantling the cooling water pump motor from motor stool assembly, moving to repair bay and positioning on the spare motor stool assembly. Again lifting and moving towards the cooling water pump, positioning and reassembling the motor after completion of cooling water pump overhaul works

Charges for dismantling the flexible coupling assembly, lock nut, bearing plate, thrust bearing, cooling coil & its cooling coil water lines and bearing oil pan. Cleaning and inspection of the components, bearing, renewing the worn-out components and reassembling Of Cooling Water pump

Charges for dismantling of motor stool with pump components of Thrust block, Discharge elbow, Drive shaft, Element – III & II, Intermediate shaft top half coupling, Intermediate shaft, Element – I, pump shaft half coupling, Pump casing, Bearing housing, Pump shaft with impeller, Suction bell mouth assembly, Bell mouth liner, etc Of Cooling Water pump.

Charges for cutting and removal of existing worn-out shaft sleeves (SS) in impeller shaft bottom / impeller shaft top / Intermediate shaft / Drive shaft stuffing box sleeve and assembling of new sleeves by gas flame heating. Of Cooling Water pump

Charges for lifting of impeller along with pump shaft, setting to the impeller stand, removing the impeller from the pump shaft by using hydraulic jack and gas flame heating over the impeller stem portion and reassembling of existing/new impeller with existing / new pump shaft and finally tightening of impeller lock nut and deflector with S.S. Allen screws and tag welding.[S.S. Allen cap screws of size: M12 x 70 mm, full thread – 6 Nos., are under contractor’s scope]Of Cooling Water pump

After completion of overhaul works, charges for measuring overall lift, providing correct lift and locking with lock nut. Alignment of cooling water pump with motor after tightening of motor bed bolts and finally observation and attending of minor defects noticed during trial run of cooling water pump.

Charges for applying one coat of rust remover, again cleaning the rust, applying one coat of epoxy red oxide primer and one coat of epoxy high built coal tar one over the other for the immersed pump components such as element pipes, pump casing, bearing housing, suction bell mouth assembly & cooling water pump ring guard etc., [Cost of Rust remover, epoxy red oxide primer and high built coal tar are under contractors scope]. 1.Rust Convertor-19.8 lit 2.Epoxy Red oxide primer-21.7 lit 3.Epoxy high built coal tar-37.4 lit 4.Epoxy thinner—9.3 lit

Charges for complete cleaning of pump components above water level with two coats of enamel light / smoke grey, black, green paint over the discharge elbow, thrust pad, motor stool, distance piece, bearing lubricating oil pan (black paint), lubricating oil cooling water lines (green paint) etc…[Cost of all paints are under contractor’s scope] 1.Enamel Light/smoke grey paint -80 lit 2.Epoxythinner-19.9 lit

Charges for Transporting of drive shaft, intermediate shaft, pump shaft and new sleeves to out side workshop for checking trueness of each shaft and machining the existing / new shaft sleeve and stuffing box sleeve = 4Nos to correct size ( including cleaning and taking measurements of drive shaft, Intermediate shaft and pump shaft -3 Nos )and return back from out side workshop to MTPS -I cooling water pump house repair bay after completion of machining works.

Transporting of pump components such as element pipes I,II&III, pump casing, bearing housing, suction bell mouth assembly, bearing, shaft sleeve, stuffing box sleeve etc. from stores to site including devolution .

Charges for reconditioning of eroded / porosity of the suction bell mouth assembly by means of cast iron welding electrode over the circumference of 2.82 m of width = 15mm (approx.) and grinding the seating surface of bell mouth liner in suction bell mouth assembly.(Necessary welding generator for welding works will be provided by Board at MTPS workshop. Welding rods are under contractor’s scope.)(This work to be carried out at the time of overhauling, if necessary)

Charges for cutting and removing the existing corroded & damaged cooling water pump ring guard frame structure fabrication & erection of cooling water pump ring guard frame structure