bids are invited for operation and maintenance of mssr and edvor building , operation and maintenance of residential colony cisf karasa and marripalem , filtration of transformer oil , supply of transformer oil , supply and replacement of silica gel crystals , transportation of hsd oil , spray painting of lt panels, feeder pillars , painting of street light poles , rewinding of following rating submersible pump motors , lifting of following submersible pumps upto 200 feet , rewinding of following rating monoblock pump motors , rewinding and servicing of ceiling fan motors , repairing or replacement of wall mounted or pedastal fan motors , replacement of 255 amps 4 pole, 415 volts, power contactors , supply of 12 volts, 100 ah lead acid maintenance free battery , supply of 12 volts, 180 ah, 25 plate lead acid maintenance free battery , annual maintenance contract of solar powered obstruction lighting system , supply of 12 v flasher cards , supply of battery charger pro star 30 , supply of medium intensity light unit , supply of 12v, 300ah battery bank , supply of spol lightning arrester cards , shifting of battery banks for spol lighting system , dsr 2022 total quantity : 858