REPAIR AND MAINTENANCE OF COOLING APPLIANCES AC REFRIGERATION AT CERTAIN SHOP FLOORS INCLUDING ALLIED WORKS AT ZONE 1 2 3 4 AND 5 AT NAVAL DOCKYARD VISAKHAPATNAM UNDER GE (I) (DM) VISAKHAPATNAM REPAIR AND MAINTENANCE OF COOLING APPLIANCES AC REFRIGERATION AT CERTAIN SHOP FLOORS INCLUDING ALLIED WORKS AT ZONE 1 2 3 4 AND 5 AT NAVAL DOCKYARD VISAKHAPATNAM UNDER GE (I) (DM) VISAKHAPATNAM