bids are invited for repair, maintenance, and installation of plant/ systems/equipments (version 2) - power plant; valves, heat exchangers, pressure vessels; buyer - removal, cleaning and installation of all manhole covers and internals of deaerator and deaerator storage tank , removal, cleaning and installation of all manhole covers and internals of hotwell , removal, cleaning and installation of all manhole covers/channel covers and internals of secondary system flash tanks / drain tanks/msrs , removal, cleaning and installation of manhole cover (500 to 750nb) of service water and asw system , removal, cleaning and installation of manhole cover (1100nb) of service water and asw system , removal, cleaning and installation of manhole (1700 to 2500 nb) cover of ccw system , maintenance / overhauling of 2 to 3 size manual operated valve , maintenance / overhauling of 2 to 3 size power (electrically or pneumatically) operated valve , maintenance / overhauling of 4 to 6 size manual operated valve , maintenance / overhauling of 4 to 6 size power (electrically or pneumatically) operated valve , maintenance / overhauling of 6 to 10 size manual operated valve , maintenance / overhauling of above 6 to 10 size power (electrically or pneumatically) operated valve , maintenance / overhauling of above 10 to 14 size manual operated valve , maintenance / overhauling of above 10 to 14 size power (electrically or pneumatically) operated valve , maintenance / overhauling of above 14 to 18 size manual operated valve , maintenance / overhauling of 20 to 26 size manual operated valve , maintenance / overhauling of 20 to 26 size power (electrically or pneumatically) operated valve , maintenance / overhauling of 28 to 34 size manual operated valve , maintenance / overhauling of 28 to 34 size power (electrically or pneumatically) operated valve , sgbd hx – opening for internal inspection & tube cleaning , ccw water box 2000 nb rubber expansion joint replacement , ccw debris filter bsd pm checks and inspection , bfp, lpdp & acw suction strainer cleaning , df isolating mv bsd pm checks , 650 nb scs shell replacement , pipe spool removal & installation / replacement for header inspection (400 to 700 nb) , 1000 nb asw self cleaning strainer inlet pipe spool removal & installation for header inspection , ccw pump discharge mv overhauling