Q2. Describe, with the aid of sketches, the principle of centrifugal separation as used in fuel and lubricating oil purifiers (16)
Q3. (a) List the THREE types of Notice issued by the Maritime and Coastguard Agency (MCA) to disseminate information to ship-owners and seafarers (6)
(b) Define the relevance and importance of each of the Notices stated in (a) (10)
Q4. With reference to an aerobic sewage treatment plant:
(a) Explain the need for continuous aeration (6)
(b) Describe the hazards that may be present when the plant requires internal maintenance or inspection. (10)
Q5. (a) With reference to contents and use, describe how a portable fire extinguisher is identified (4)
(b) State, with reasons, the type of fire extinguisher normally found in the engine control room. (4)
(c) List the actions to be taken prior to the operation of a bottled CO2 fire fighting system. (8)
Q6. (a) State FOUR different causes of earth faults. (8)
(b) For EACH cause stated in (a), explain how the fault is rectified. (8)
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