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Q1. Write a report to your engine superintendent describing a breakdown of the main ref plant for cargo or ships provision giving reasons for breakdown the method of repair and the action to prevent a recurrence.

Q2.  A. As Second Engineer, outline your instructions to members of the ship’s engineering staff for inspection of the main engine timing chain; B. The inspection in A. has revealed that the roller chain needs replacement. Describe how this is achieved.

Q3. A. State the indication that main boiler generating tube is leaking i. When the amount is small; ii. When the amount is large. B. If boiler tube failure is evident describe immediate action necessary to stabilize plant.

Q5. A single forged shaft for a small gear pump is broken in the middle. Suggest some emergency repairs to the shaft to enable run the pump. State the type of repair and procedure for carrying out the repair. What is the most viable alternative to repair if no spares are available?

Q2.  Describe three ways in which each of the following defects would reveal itself during full power operation of an engine. - A. Cracked liner; B. Defective fuel valve; C. Overheated bottom end bending, D. Inefficient turbocharger

Q8.  Describe the procedure to be undertaken when, upon a routine schedule for changing fuel injector on a main engine, it is found that the injector body is seized and cannot be removed by conventional means

Q6. An auxiliary boiler water level control system has a differential pressure transmitter as the detecting element for water level.

A. Sketch and describe such an arrangement; B. If the transmitter was damaged describe how a replacement unit would be calibrated

Q2. With reference to reciprocating air compressors explain the cause of the following faults.

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.

Q3. What factors would you consider in deciding whether to open up a cylinder unit for overhaul? After opening the unit and preparing for assembly, how would you decide whether to renew or re-use piston rings?