Q1. With reference to shutting down a main propulsion diesel engine plant, after a voyage, explain EACH of the following:
(a) The conditions to be met for transferring from Bridge control to Engine Room Control just prior to shut down (8)
(b) FOUR precautions to be taken after shutdown, in order to ready the main engine for maintenance (8)
Q2. (a) Describe, with the aid of a sketch, the operational principles of a main engine exhaust gas turbo-charger. (10)
(b) State the function of EACH of the following turbo-charger system components:
(i) Suction filters (2)
(ii) Exhaust grids (2)
(iii) Charge air cooler (2)
Q3. With reference to a main engine air starting system:
(a) State FIVE important safety features fitted to the system (10)
(b) State how a leaking air start valve may be detected when the engine is running (2)
(c) Explain the dangers of allowing a leaking air start valve to persist (4)
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