bids are invited for customized amc/cmc for pre-owned products - contract of overhauling jobs in the equipment of tg auxiliary area; unit 2 dstps, dvc; annual maintenance contract (amc); as mentioned in atc; yes--cleaning of plate heat exchanger for tg/sg ecw deaerator and hotwell internal inspection, cleaning, repair and attending leakage cleaning of oil cooler/phe of tdbfp/mdbfp/scal oil/primary water boiler feed pump cartridge overhauling replacement of condensate extraction pump catridge overhauling of bfp booster pump cleaning of ball screen separator of coltcs condenser vacuum pump replacement overhauling of ecw pumps servicing of manual/motorized/control valves/safety valves (excluding servicing of actuators) sizes above 100 nb & up to 200 nb. servicing of manual/motorized/control valves//safety valves/butterfly valves (excluding servicing of actuators) sizes above 200 nb & up to 350 nb servicing of manual/motorized /control valves/butterfly valves (excluding servicing of actuators) sizes above 350 nb & up to 450 nb servicing of manual/motorized /control valves/butterfly valves (excluding servicing of actuators) sizes above 450 nb.