bids are invited for repair, maintenance, and installation of plant/ systems/equipments (version 2) - onboard ins shishumar at naval dockyard mumbai and firm premises; hard chrome plating of the hydroplane and rudder rams of in submarine shishumar; service provider - taking receipt of the checking of pitting/wear out damage, checking ram trueness, cylindrical grinding off of worn-out chromium layer, ram material build up using special maintenance welding electrode, machining grinding, then carrying out hard chrome build up, all in controlled conditions, hydrogen embrittlement release post plating, further superfinishing and stress relieving of the same. testing/certification using nabl approved lab. , transportation of the forward and aft rams from dockyard to workshop and return on work completion