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Q7. State why the following equipment’s require shut down during a major fire which has necessitated the evacuation of the machinery spaces:

(a) Settling and service tank valves. (4)

(b) Fuel transfer and supply pumps (4)

(c) Mechanical and natural ventilation (4)

(d) State how the fire is brought under control using the facilities available outside the machinery spaces. (8)

Q7. Petroleum vapours are a dangerous substance and when mixed with air can be ignited. With this in mind, briefly describe:

(a) An explosimeter or combustion gas indicator which can be used to check the atmosphere of a tank or pump room (10)

(b) Describe the explosimeter and its operation (10)

Q8. (a) The Centrifugal ballast pump in the engine room also doubles as a fire pump in your ship. What specific precautions would you take to change over the ballast pump from ballast / de-ballast mode to a fire pump mode (10)

(b) How is the emergency bilge suction tested? (10)

Q6. i) Name the different causes of fire, originating in machinery space. What is auto ignition and explain how it occurs. (5)

ii) Name some of the methods for detecting fire. (5)

iii) Name some of the methods for containment of fire. (5)

iv) What are the methods available for extinguishing fire. (5)

Q9. i) Explain the purpose of emergency escape from ship's engine room. How many escape routes are required? (8)

ii) What are the requirements under SOLAS for emergency escape routes from engine room. (8)

iii) What is EEBD? Why is it provided at the entrance to escape routes. (6)

Q1. Explain the advantages and disadvantages of an inert gas smothering system from flue compared to an inert gas generator. Explain why inert gas generator is more advantageous.
Why it is unsuitable for use in machinery spaces. (20)

Q1. A fire in the exhaust gas boiler on a motor ship may develop in two or three stages. With reference to such situations; discuss: A. The factors which could be responsible for initiation and development of: i) Ignition of soot; ii) Small soot fires; iii) High temperature fires; B. State the standing instruction you, as Second Engineer Officer, would issue to watch keepers with respect to the action to be taken in the event of a boiler uptake fire.

Q1. A. What are the general requirements of fixed gas fire-extinguishing systems for shipboard use? B. What are the specific requirements related to CO2 systems with respect to quantity, piping, controls and volume of free CO2

Q1: With reference to an emergency fire pump state –  A. The regulation that influence its location, capacity and power; B. How the power supply to emergency pump is ensured? C. Why a relief valve is necessary on the deck main?

Q5. a) Sketch the following detection heads and for each give a brief description of their operation.

(i) Rate of air temperature rise detector.

(ii) Flame detector,

(iii) Fixed temperature fire detector of the quartzoid bulb sprinkler type.

b) (i) What type of space is the rate of temperature rise detector used to protect? Give two spaces on board the ship where it would be fitted.

(ii) State where the fixed temperature fire detector is fitted on board the ship. Name

three places on the detector where its working temperature is indicated.

(iii) Where are flame detectors usually required to be fitted on ship?

Q3. Outline the measures to prevent fires caused by spillage of fuel, lubricating and hydraulic oil, involving EACH of the following:

(a) Pipes, filters, valves and cocks; (2)

(b) Oil units; (2)

(c) Overflow arrangements; (2)

(d) Sounding arrangements: (2)

(e) Thermometer fittings; (2)

(f) Pumps and fittings; (2)

(g) Electric cables; (2)

(h) Exhaust turnings. (2)

Q3. Explain in detail how you would isolate one section of a water sprinkler system for routine maintenance. Describe all tests and inspections you would make and how you would return the system to service. (16)