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Q6. A. State the circumstances owing to which it may be necessary to renew a cylinder liner.

B. Explain how the liner is removed

C. Explain how the new liner is fitted; State the important checks to be made before and after fitting.

Q6. Under Continuous survey of machinery (CSM) bottom end bearing of a large 2stroke slow speed engine is due for survey.

A. As second engineer, explain the procedure involved in complete inspection of a bottom end bearing.

B. List the precaution to be taken.

C. Indicate the reasons for possible defects which could be encountered and state how they may be rectified.

D. What test are carried out on completion of survey and re-assembly.

Q4. Accidents regularly occur due to premature or accidental release of CO2 into machinery spaces. With reference to this, enumerate the procedure or arrangement that you as second engineer would adopt with respect of the following

A.  Contractors working on CO2 system;

B. Understanding between bridge and engine room in the event of a machinery space fire;

C. Familiarizing staff with the system;

D. Checks and tests are carried out before putting system in operation?