bids are invited for custom bid for services - defect rectification of engg defects e058 to e060 of icgs c420 scope of work as per appendix a-e-58: 01 no. discharge valve of bilge & gs pump for fire main system getting stuck intermittently and spindle is rotating freely. also sea water leakage observed from spindle surrounding after packing renewal. valve to be repaired and proved for sat operation. (type-sdnr, size-50mm). e-059: sea water leakage observed from exhaust line of pda near chino valve. suspect exhaust line cracked. defect to be rectified and proved for satisfactory operation. all inway jobs included (mat- ss, length-01 mtr). e-060: sea water leakage observed from exhaust trucking of stbd main engine near bell mouth suspect welding portion of trunking cracked. same to be repaired and dpt to be carried out. (mat: ss)