Q8. (a) Write a procedure for the action a duty engineer should take on being called to the engine room during a UMS period in the event of an engine slowdown due to a high cylinder exhaust temperature on the main propulsion engine. (6)
(b) State, with reasons, the possible causes of a high exhaust temperature on a single cylinder of a main propulsion engine. (5)
(c) Explain why a defect resulting in a high exhaust temperature on one cylinder can cause engine damage if the engine is not slowed down when the fault initially occurs. (5)
Q1. With reference to diesel engine crankshafts:
(a) Explain the causes and effects of torsional vibrations; (4)
(b) Explain the term critical speed, starting why the engine should not be continuously operated at this speed. (6)
(c) Explain the term fatigue cracking, starting with reasons, TWO factors which have an influence on the likelihood of fatigue cracking. (6)
Q9. (a) Explain how a diesel generator is prepared and selected as a standby generator. (8)
(b) Write a procedure for checking a diesel generator engine after it has been shut down and before it is returned to standby duty. (8)
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