DieselShip's Online Content Library

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?

Q1. With reference to automatic sprinkler system for firefighting purposes:

a) Explain, with the aid of a heat release versus time diagram, the difference between fire control and fire suppression

b) State the limitations of using glass bulb to activate sprinkler heads and suggest, with reasons, an alternative mechanism

c) The safety devices incorporated in the system

d) The parameters governing the volume of the pressure tank

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?

Q4. A. Sketch a simplified circuit that may be incorporated in a control panel for an array of fire detectors.

B. Describe the following features that may be found in a control panel for fire detectors:

i) Audible fire alarm circuits;

ii) Identification, of zone of fire;

iii) Automatic change, over from normal power supply

Q8. What are the core features of the FSS Code? (International fire safety systems code). Elaborate on any one test prescribed by the Code. (20)

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)