bids are invited for custom bid for services - removal of back pull out assembly and installation of spare back pull out assembly of pump having motor rating up to 60 kwe. decoupling, alignment and coupling of pump and motor having motor rating up to 60 kwe. overhauling of motor of rating from 30 kwe to 60 kwe. overhauling of manual operated valve or overhauling of non-return valve or overhauling of air operated piston / flapper type actuator. maintenance of actuator of control valve having diaphragm maintenance of shutdown cooling pump having motor rating 95kwe for in service inspection as per scope of work opening and boxup of shutdown cooling heat exchanger / moderator heat exchanger opening and boxup of both primary sides ( hot leg & cold leg ) man hole covers of one steam generator for isi. removal and installation of secondary side hand-hole covers of steam generator for isi & water jet cleaning. preventive maintenance checks of osu tank as per scope of job preventive maintenance checks of primary circulating pump ( pcp ) and its motor. overhauling of electrical actuator operated / piston type air actuator operated valve guide nut inspection of emergency core cooling system / shut down cooling system motorized valve having valve size: 8 inch to 12 inch. preventive maintenance checks of emergency core cooling system shut down cooling system motorized valve having size: 8 inch to 12 inch. overhauling of control valve with valve size upto 6 inches. overhauling of motor with electrical rating from 65 kwe to 400 kwe. preventive maintenance checks of primary pressurizing pump. replacement of door seals of reactor building main air lock equipment door. replacement of main air lock vacuum pump / emergency air lock vacuum pump / vacuum moping pump. preventive maintenance checks of manual bellow sealed valve. diaphragm replacement of diaphragm valve. diaphragm replacement of diaphragm valve. replacement or cleaning of strainer / filter replacement of relief valve flange gasket replacement and tightening flange / threaded joint tightening removal of snubber for testing and installation after testing replacement of primary circulating pumps motor having rating 2800 kw. overhauling of spare back pull out assembly of oil supply unit pumps having motor rating less than 30 kwe at mmu shop. replacement of lobe type blower. feeder gap measurement manual axial creep measurement & adjustment removal and installation of zig-saw panel removal and installation of step panel / insulation panel coolant channel repositioning pss drive lower chamber o-ring replacement, wire rope inspection & gear train / clutch gap inspection pss drive upper chamber replacement mock up & preparatory activities for cobalt element replacement job regulating rod element replacement in reactivity mechanism drives. qualification on barcis mock up, erection of barcis set up on fm bridge, removal from bridge and decontamination. inspection activity of coolant channels by barcis shifting of barcis drive to / from x-drive from / to launching table total quantity :