round the clock and breakdown maintenance of generator and its auxiliaries u6 , dtpp , anpara , part-a & b : routine & breakdown maintenance work , part-a : , round the clock maintenance of generator h2 -gas , seal oil , stator water system of unit 6 , 2x500 mw , dtpp , anpara ( sonebhadra ) . , part-b :breakdown maintenance work of seal oil / primary water system / gas system , servicing / overhauling of pump of seal oil system as per scope of work , attending oil/water leakage from seal oil cooler as per scope of work , servicing of co2 vaporizer as per scope of work , overhauling of bearing vapour exhauster fan & motor as per scope of work , servicing / replacement of valves of h2 gas/seal oil system / primary water system valve as per scope of work , repairing of brass nozzles of h2/co2 gas filling station as per scope of work , removal of h2 gas from generator as per scope of work , filling of h2 gas in generator as per scope of work , alignment of primary water/seal oil pumps with ac/dc motor as per standard procedure . , replacement of ac/dc seal oil pump as per scope of work . , replacement of following by isolating & dismantling and assembling & installation after completion of work ( a ) . bearing of seal oil pump . , ( b ) mechanical seal of seal oil pump , servicing /overhauling/bearing replacement of primary water pump , replacement/cleaning of primary water filter , replacement of resins , loading of empty h2 cylinders from unit 6/7 site/site store & unloading of empty h2 cylinders at gas filling plant of atps/dtps . , loading of filled h2 cylinders at gas filling plant of atps/dtps & unloading at unit 6/7 site/site store . , loading of empty h2/co2/n2 cylinders from unit 6/7 site/site store to be sent for filling outside atp anpara . , un-loading of filled h2/co2/n2cylinders at unit 6/7 site/site store received after filling of gas from outside atp anpara .