tender for removal of rc valve in cwp 1a,1b & 1c of size 200 mm along with r.c. pipe and manhole door and fitting the same after completion of work. , charges for checking and renewal of nitrile rubber seal in 1600 mm butterfly valve in cooling water pump 1a, 1b & 1c, and if necessary renewal of seal clamping pad, rethreading of worn-out threads in the seal mounting disc and clamping the seal with the disc. checking the open / close operation of 1600 mm butterfly valves of cooling water pump 1a,1b & 1c. , overhauling of gear box assembly of 1600 mm b.f.v, including removal of actuator, dismantling the gear box assembly, inspection, if necessary renewal of spare and reassembling the same in 1b pump. , overhauling of b.f.v of size 1600 mm provided at cwp 1b pump discharge line including dismantling the bearing assembly at both ends inspection, if necessary renewal of spares and reassembling in 1b butterfly valve size 1600mm. , charges for lifting the screen, positioning, cleaning the debris and algae and placing the screens in its position after completion of painting works. , charges for cleaning and painting with one coat of epoxy red oxide primer and one coat of epoxy coal thar one over the other with proper interval over the intake screen frames structure of cooling water pumps 1a,1b & 1c (284m2) man hole doors of cwps of stage-i (23m2) and painting with one coat of enamel red oxide primer and one coat of synthetic enamel sea green one over the other with proper intervals on the outer surface of the intake screen stand, stop log stand and 10 &15 ton hoist lifting beam in cooling water pump fore bay-i (72m2). , charges for overhauling of 600 mm size 150 class gate valves in clarifier inlet & outlet valves of cws including dismantling the valve, cleaning all the parts checking the seating surface and lapping the gate/seat/flap and reassembling the valve with bonnet gasket and gland packing.(gasket under contractor scope) , charges for petty iron works for fabricatio