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Q8. Fire protection for the accommodation spaces of passenger vessels incorporates means of detection, fighting and containment to reduce the spread of any fire.

A. Describe the means of detection and firefighting commonly installed. (8)

B. State how the spread of fire is prevented and how the containment is used with the firefighting and detection arrangement to locate the fire. (8)

Q5. Describe the procedure for the regular maintenance routines to be carried out on the Fixed CO2 fire-fighting system. (16)

Q8. a) Explain the working principle of a hyper mist fire suppression system on ships. How does this system differ from traditional water-based fire suppression methods? (8)

b) Discuss the installation, maintenance, and testing requirements for a hyper mist system on board ships. How does regular upkeep ensure the system’s effectiveness in an emergency? (8)

Q9. a) Sketch a line diagram of a mechanical low expansion foam fixed firefighting system suitable for machinery spaces. (6)
b) Describe the operation of the system sketched. (6)
c) Explain how a mixture of foam making compound and sea water are converted into foam. (4)

Q7. a) With reference to SOLAS 74 amendments 2000, maintenance plan is to be kept on-board ship for firefighting system,

a) Enumerate the list of fire protection system and fire-fighting systems and appliances which will be required to be included in the maintenance plan. (8)

b) Training manual as required by SOLAS 74 amendments 2000, chapter II -2 contains instructions and information with respect to fire fighting. List the same and their significance. (8)

Q8. With reference to fire smothering agents explain why:

a) Effectiveness of foam is directly related to its degree of effervescence and surface tension. (6)

b) low expansion foam is best suited for use against localized fire, while high expansion foam is most effective in with major conflagrations,

c) In the absence of foam appliances, water jets can be effectively used against oil fires (5)

Q7. a) Explain working of galley CO2 firefighting control system (8)

b) sketch circuit diagram and explain working of electrical oven fitted in a ship’s galley. (8)

Q9. With reference to the fixed CO2 flooding system for fire fighting on board ships, explain the following:

a) Advantages and disadvantages of CO2 as a fire fighting medium (8)

b) The purpose of providing time delay with a suitable block and line diagram (4)

c) What are the jobs pertaining to the five yearly maintenance routines on the system. (4)