344/247/10/25-26

Amount

E-100:- Port DA exhaust trunking is showing abnormally high temperature due to which the AFT engine room Fire alarm is getting activated frequently. During DI/DR by ship staff it was observed that the trunking base metal is perished due to fair wear and tear at different locations. Same is causing burning off of lagging, increase in temperature of trunking and exhaust leakage in AFT engine room. The perished portion of metal trunking along with Lagging to be renewed as per sample. In way jobs include as follows: - 1. Exhaust trunking outer aluminum protection to be removed entirely including the upper and lower area and burned-out area to be renewed as per sample. 2. The lagging on entire trunking to be renewed and cleaned for removal of glue and other debris. 3. The trunking to be checked for any hot spots, metal deformation and if found, same to be renewed by class approved metal with proper seam welding and checked for die penetration and leak proof by hydro test. 4. The surface of the trunking to be prepared for applying adhesive material for trunking which includes buffing the surface for holding of adhesive material. 5. Lagging to be applied on top of trunking after the coating of adhesive material followed by asbestos coating for proper heat insulation. Sufficient roll of lagging to be placed for proper heat insulation. Intermediate heat insulators to be placed for providing extra absorption and convective dissipation and for grip lagging. 6. After the lagging procedure is over the entire trunking including the bentstobe provided with aluminum sheet insulation for proper protection from heat. Any other additional job including brazing, additional metal renewal of trunking and additional material to be considered and carried out accordingly. All in way jobs to be carried out and proved for satisfactory operation.

E-101:- Stbd waterjet HPP hydraulic coil was observed to be low during routine checks and after replenishment of lube oil in hydraulic power pack same was observed after 24 Hrs. During DI/DR by ship staff it was observed that hydraulic pipe line from power pack to PTO pump in forward engine room of Stbd water jet is leaking with hydraulic oil from bulkhead end at both the bulkheads. Suspect the bulkhead coupling along with the threads have worn off due to fair wear and tear. Further, the pipelines were observed to be having cracks at two in no joints and intersection which is increasing the leakage during high pressure developed in the system. The pipeline be reworked/ Renewed for operationalising the water jet on priority sitting operational situation. In way job includes: 1. Removal of hydraulic oil from the entire system by draining and proper stock keeping of them for reuse. Further the hydraulic lines (Material: SS) from Stbd water jet HPP. 2. Transportation to and from workshop for renewal of the pipeline including final surface blasting and mat painting of pipeline. 3. Post dismantling of hydraulic pipelines the joints are to be inspected and adie penetration test to be carried out for understanding the depth of failure. If damaged more that 50% the joints along with the hydraulic pipeline to be renewed 100%. 4. Post the rework or renewal the hydraulic pipelines with joints has to be assembled in workshop and pressure testing using water and them followed by cleaning and them using hydraulic oil has to be carried out and same needs to be done upto 12 Hr. If any failure is observed then the entire procedure has to be repeated and then the system to be proved infront of ship staff. 5. All other in way job to be included for proper completion of job including refitting and trials of the system.

VYAS AND SONS ENTERPRISE (BID ID -3376932)

SHYAM JITENDRA MODHA (BID ID -3367802)