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 a cause for initiation and development of: (i) Ignition of soot; (ii) Small soot fires; (iii) High temperature fires. B. State the standing instructions you, as a Second Engineer Officer, would issue with respect to the action to be taken in the event of a boiler uptake fire.
Q1. A. State the standing instruction you, as Second Engineer, would issue with respect to the action to be taken in the event of a boiler uptake fire; B. State how the incidence of uptake fires may be minimized; C. State the reasons for blow – back from the furnace of an auxiliary boiler; D. State the standing instruction you, as Second Engineer would issue with respect to the avoidance of boiler furnace blow – back.
Q5. A. Explain why it is essential to ensure adequate cooling of air compressor cylinders, inter coolers and after coolers; B. State with reasons the possible consequences of prolonged operation of the compressor if these areas are not adequately cooled.
Q6. With Respect to Container Ship: -
A. Sketch a ship’s indirect refrigeration system arranged for cooling containers stowed in stacks in the hold;
B. Describe the refrigeration system sketched in (A);
C. State the advantages of the system described in (A) compared with containers with their own refrigeration self-contained units.
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