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Q8. With reference to CO2 gas provided for firefighting purposes:

(a) describe, with the aid of a sketch, a system for the detection and extinguishment of hold fires;(7)

(b) state how the amount of gas to be released into the hold space is estimated. (3)

Q8. With reference to fixed CO2 smothering systems for ships machinery spaces:

(a) State the safety procedure that the Chief Engineer Officer should adopt with respect

to maintenance being carried out on the system by contractors whilst the vessel is in port. (3)

(b) State the procedure prior to the safe release of CO2 into the machinery space in the event of a fire. (4)

(c) Describe the factors that should be considered prior to re-entry of the machinery spaces after the release of CO2 gas. (3)