Q12. When a vessel is in dry dock, the possible risks of fire in the machinery spaces are heightened due to the nature of the work being carried out.
As Chief Engineer Officer, compile a set of standing orders instructing ship's staff on the actions to be taken should a serious fire occur. (10)
Q13. With reference to double hulled oil tankers:
(a) sketch a mid ship cross section; (5)
(b) state the reason this type of design; (1)
(c) state FOUR disadvantages of this type of design. (4)
Q14. During sea trials, extensive noise measurements are taken in accordance with the Code of Practice for Noise Levels in Ships.
(a) State and explain the unit of sound measurement. (2)
(b) State the noise level above which personnel are required to wear ear protection. (1)
(c) Explain how a ship's crew may be made aware of the hazards posed by exposure to excessive noise (2)
(d) Explain how the noise levels can be reduced in the design of EACH of the following:
(i) diesel generators;(3)
(ii) ventilation fans and trunkings. (2)
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