bids are invited for amc of solar powered obstruction lighting system installed on 5 hill tops surrounding imphal airport amc of spol system-1st year. - annual maintenance of solar powered obstruction lighting system installed on 5 hill-tops surrounding imphal airport namely nongmaiching hill, chingfu hill, heibok hill, maring phunal and langjing hill including minor repairs, replacement of minor components and any other required components associated like lattice tower, foundation, earthing system and carry out preventive maintenance as per attached schedule to keep the system operational for night landing at imphal airport.for 1st year. , amc of spol system-2nd year. - annual maintenance of solar powered obstruction lighting system installed on 5 hill-tops surrounding imphal airport namely nongmaiching hill, chingfu hill, heibok hill, maring phunal and langjing hill including minor repairs, replacement of minor components and any other required components associated like lattice tower, foundation, earthing system and carry out preventive maintenance as per attached schedule to keep the system operational for night landing at imphal airport.for 2nd year. , supply of maintenance free battery 12v 75ah with buy back arrangement. for 1st year. - supply of maintenance free battery 12-volts, 75ah, with buy back arrangement.for 1st year. , supply of maintenance free battery 12v 75ah, with buy back arrangement. for 2nd year. - supply of maintenance free battery 12-volts, 75ah, with buy back arrangement.for 2nd year. , supply of heavy-duty solar charge controller. - supply of heavy-duty solar charge controller suitable for 148 wp solar module (4 nos. 74 wp solar pv module, 2 nos. parallel and 2 nos. series model) for charging 24 v 150 ah battery bank (12 v, 75 ah-4 nos) with over charge, under charge, low bat, sc protection with indicators and consisting of dawn to dusk control for operating aviation obstruction warning light of medium intensity, 10 no. 24 v and 2 x 11 w street light of reputed make. total quantity : 41