Q1. With reference to reciprocating air compressors explain the cause of the following faults. (16)
A. Collapse of discharge valve springs.
B. Breakage of plate valves.
C. Overheating of the discharge air with an unrestricted air intake.
D. Inoperative piston rings.
Q7. With reference to the exhaust gas boiler of your ship explain the following: (16)
a) Composition and reasons of soot deposits.
b) Various stages of soot fire leading to high temperature fire.
c) Procedure to be followed for firefighting under different stages of soot fire.
d) Actions required prior to dry running of an exhaust gas boiler.
Q8. If soon after joining a motor ship, you found a number of holding down bolts slack and fretting to have occurred in the area of slack bolts. Describe how you would handle the situation? (16) - - - PREVIOUSLY ASKED - - - Q8. If soon after joining a motor ship, you found a number of holding down bolts slack and fretting occurred at slacked bolts. Describe how you as a second engineer deal such situation? (16)
Q9. During the past four months since you joined the ship as Second engineer a number of main engine exhaust valve have suffered from cracking and corrosion at the seating faces. Write a report to the Superintendent Engineer covering the following points:
A. An explanation detailing how the problem becomes evident.
B. Your action upon recognizing the extent and seriousness of the problem.
C. Your reasoned view regarding the possible causes of the problem.
D. Your recommendations to avoid future incidents.
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