DieselShip's Online Content Library

Q6. With regard to keeping the gas side of boilers in good condition discusses EACH of the following:

A. the mechanism of combustion, stating the factors which are important to good combustion;

B. Oil fuel treatments;

C. Soot removal equipment;

Q3. A. Describe the hull examination that should be carried out on a ship in dry dock making special reference to essential maintenance and repairs and survey of ship side fitting.

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?

Q4. A. Describe THREE different patterns of tube used in exhaust gas boilers; B. Give TWO reasons why a tube is condemned; C. Describe how it is replaced by a spare tube; D. Suggest with reasons the possible consequences of allowing an exhaust gas boiler to run dry during full power operation of the main engine.

Q8. Explain in detail how you would isolate one of sprinkler system for routine maintenance. Describe all tests and inspections you would make and how you would return the system to service.

Q5. With reference to air receivers and bottles explain with reasons: A. Why regular systematic internal inspection is advisable? B. Which internal areas of large receivers should receive particularly close examination? C. How bottles are inspected internally and what parts should be closely examined? D. How the condition of a bottle or receiver that cannot be inspected internally is checked?

Q9. Severe engine vibration has recently become evident when the main engine for which you are responsible operates within a certain speed range –

A. State, with reasons, the possible causes of such vibration;

B. State the consequences of operating the engine under such vibratory conditions;

C. Describe the procedure you, as Second Engineer, would implement in order to investigate and rectify the problem.

Q9. A. With reference to the insulation testing of marine electrical plant: - I. State the reasons for insulation testing; II. State the precautions to be observed when testing intrinsically safe equipment. B. Describe the overhaul of d.c. motor which has been subjected to excessively damp condition or flooding with seawater.

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