Q7. With reference to an emergency fire pump state a) The regulations that influence its location, capacity, and power. (7) b) How the power supply to emergency pump is ensured? (5) c) Why a relief valve is necessary on the deck main? (4)
Q6. Ships are provided with an independent diesel or electric or air operated emergency fire pump.
(a) State three areas in which emergency fire pump are commonly installed and give reasons why? (3)
(b) Describe with aid of a simple sketch an air pump or primer used to initiate suction when the fire pump is situated above sea water level. What suction lift would you expect from a single stage pump system? (7)
(c) State the water jet capacity the pump must be capable of and the precaution must be taken in sub-zero temperatures? (3)
(d) Using a simple sketch describe with reasons, how the emergency fire pump is connected to the ship’s fire main showing position of any isolation valves fitted and location of international shore connection (7)
Q9. With reference to an emergency fire pump state a) The regulations that influence its location, capacity, and power. (4) b) How the power supply to emergency pump is ensured? (4) c) Why a relief valve is necessary on the deck main? (4) d) Requirement of isolation valve in fire main line (4)
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