tender for annual maintenance works to be carried out in respect of turbo generator tri system during annual overhaul-2025; 1 charges for revisioning of differential pressure regulator 2 charges for revisioning of pressure oil regulator 3 charges for revisioning of seal oil filter 4 charges for revisioning of stator water filter 5 charges for revisioning of magnetic filter 6 charges for revisioning of reserve tank 7 charges for revisioning of expansion tank 8 charges for complete cleaning of stator water system pipeline. 9 charges for dismantling lifting and leading the polishing unit from 4.5mtr. area to dm plant for regeneration of the resin, dismantling of outlet flanges, cleaning of the mesh and reassembling with new gaskets, and back to its original position. 10 charges for drying out the stator winding by circulating hot air and puffing work. 11 charges for revisioning of the hydrogen gas drier. 12 charges for purging of h2 gas in tg casing 13 charges for filling of h2 gas in tg casing 14 charges for conducting air tightness test and attending minor leaks of h2 gas system. 15 charges for replacement of diaphragm in 50 nb diaphragm valves 16 cost of consumables