bids are invited for repair and overhauling service - repair restoration of main boiler water drum in ship; any other suitable brand; no; buyer premises repair/restoration of main boiler water drum-in ship 1 degutting and fitment of boller accessories 2 welding procedure specification for the welding process. precedure qualification record and welder performance qualification in consultation with oem woods foster wheeler. mil-std 248 3 mandatory mock-up of 24m carbon steel plate with consumbles and preparation and qualification test. material mild std carbon steel sa 212 gr b and lab testing of the mock plates fromb. mil-std 248, apendix 58 (1) plate cutting, machining, bevel preparation for weld coupons, (ii) low-hydrogen electrodes e7018 (multi-pass welding, 40 kg), (ii) argon gas for gtaw root-passes (1 cylinder), (iv) pre-heat equipment rental & setup (induction/torch, 150 c) 4 nabl accredited lab testing for physical and chemical properties 5 formation of qap by oem including all hold points. maker, checker and approval of the boiler designer of m/s woods foster wheeler positioning of expert with supervision 6 boiler designer oem ex usa consultancy including travel, accommodation, transporation and visit onboard any inspection of the weld repair and certify all hold points 7 compatible filler material with sa 212 gr. b material of the water drum. specialist euipment, preheating of electrode at 250 to 300 deg c. soaking and holding temp at 100 deg c (with oven) 8 preparation of drum surface degreasing run. 9 pre-heating of the water drum surface. as per navsea para 5-2.4.1 apendix 5c using either heater set up or torch 10 application of temperature sesitive crayon to control the surface temperature during pre-heating total quantity :