MTPS I CA CWS I Unit I Complete dismantling inspection Overhaul and renewal of pump components in 3 Nos Cooling Water Pump of stage I

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, thrust bearing, lock nut, cooling coil & its water lines, bearing housing and bearing stool. Cleaning and inspection of the components, renewing the worn-out components and reassembling

Charge for dismantling of motor stool with pump components of discharge elbow, Drive shaft, Intermediate shaft, pump shaft, Bearing housing, Riser main pipe (top), Delivery bend, Riser main pipe (taper), Casing & discharge vanes, taper connecting piece and bell mouth etc. [7mm rubber cord 50 M length on contractors scope]

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

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. Copper based Antiseize compound 1 kg, are under contractor’s scope]

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 & fixing the thrust pad . Final observation and attending of minor defects noticed during trial run of cooling water pump.

Charges for complete cleaning rust with wire brush, 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.

[Cost of Rust remover, epoxy red oxide primer and high built coal tar are under contractor’s scope and Painting quantity Rust remover-34 Litre, Epoxy red oxide primer-37 Litre, Epoxy high built coal tar-64 Litre and Epoxy Thinner -15Litre are under contractor’s scope ].

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, bearing housing (black paint), lubricating oil cooling water lines (green paint) etc…[Cost of all paints are under contractor’s scope and Paint Quantity Enamel Light /smoke grey – 69Litre , Epoxy Thinner – 17 Litre]

P.K.ENGINEERING