bids are invited for custom bid for services - annual plant maintenance of 04 nos generating units and auxiliaries of nathpa jhakri hydro power station for years 2024 25 - annual overhauling of turbine as per scope of work item at s.no. 1 annual overhauling of generator & governor as per scope of work item at sr. no.2 annual overhauling of miv service seal as per scope of work item at st. no. 3a. annual overhauling of butterfly valves as per scope of work item at sr. no.5 annual overhauling of gis and protection system as per scope of work item at sr. no.6 annual overhauling of ventilation system as per scope of work item at sr. no.7a. annual overhauling of transformers as per scope of work item at sr. no. 7b special maintenance- annual overhauling of miv maintenance seal as per scope of work sr. no.4 total quantity :