DieselShip's Online Content Library

Q1. (a) Explain how can the cooling spaces within a cylinder jacket be examined without withdrawing the cylinder liner?

(b) To what parts of a cylinder jacket would give attention after removing an old cylinder liner prior to fitting a new one?

(c) What periodic attention must be given to the scavenge air space and piston-rod packing (Stuffing box) at the bottom of a cylinder liner?

Q2. When ship is in dry dock, as a Second Engineer, describe inspections you would make prior to the start of work, during the work and after completion of the work of the following:

(a) Large sea water inlet chest and valves;

(b) Forward end of ship;

(c) Propeller and stern bush;

Q3. With the aid of a simple sketch, explain the “trouble spots” in a basic air-conditioning unit and with reference to your sketch, explain the following: -

(a). How is capacity control achieved?

(b). How is humidity control achieved & why is it important? How the problem of increase in humidity of cooled air is overcome?

(c). How discomfort caused by the excessive drying effect of heated air is overcome?

(d) Why are generally blower run with v belts? State possible reasons if the blower is vibrating?

Q4. With reference to Auxiliary boiler safety valves;

A. Describe with the aid of Sketch the safety valve for an auxiliary boiler;

B. Identify with reasons. The parts that require particularly close attention during overhaul;

C. Describe how the safety valves are reset after an overhaul.

Q5. As a second engineer, List out all the hazards identified with regard to cylinder head lifting job during main engine overhaul. explain how do you carry out risk assessment for above mentioned job.

Q6. With Reference to Main Engine Fuel Pumps.

(a) Explain how the setting of a variable injection timing fuel pump is checked and adjusted.

(b) State why it may be necessary to adjust the settings of a variable injection timed fuel pump.

Q7. Describe the action you would take and outline possible reasons for failure in both the following cases:

(a) The engine fails to turn on starting air,           (b) The engine turns on starting air but fails to fire.

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

Q9. With regard to a U.M.S. ship having an automatic fire detection system for the machinery space,

A. Sketch a line diagram of the system showing how shipboard mains supply is fed through battery charger and emergency battery to fire detector heads and fire zone indicator panel and alarms.

B. In the event of a mains supply failure state the length of time for which the emergency battery should be capable of operating the system.

C. Sketch and describe a line termination or method of monitoring the integrity of the system