bids are invited for repair and overhauling service - repairing of seawater and exhaust gas leakage of stbd main engine trunk bellow at water jet compartment; mtu 4000 series; no; service provider premises sea water and exhaust gas leakage observed in stbd main engine exhaust trunk bellow at water jet compartment. exhaust bellow to be repaired/renewed as per sample and stbd main engine exhaust system to be proved for satisfactory operation. (mat: ss, d- 400mm and l-400mm) following in way jobs to be carried out during repaired/renewed of exhaust bellow:- 1. repair/renew of stbd main engine exhaust pipe cladding and lagging. same to be replaced/repaired. 2. visual inspection and dp test to be carried out in welded area. 3. renewal of 24 nos. bolts and nuts (m18, mat: ss). 4. inspection of exhaust bellow and defective to be repaired/renewed. 5. repairing and welding of stbd main engine exhaust trunk and defective pipe to be repaired/renewed. total quantity :