MEP MEO Class 2 Written Question (FEB 2023)

       EXAMINATION OF MARINE ENGINEER OFFICE

MARINE ENGINEERING PRACTICE

    M.E.O. CLASS II

       Time: 3 HOURS Total Marks - 100

Q1. A. Describe how a main engine fuel pump would be set and checked for:

(i) Timing; (ii) Quantity

B. Explain how a setting of a variable injection timing fuel pump is checked and adjusted.

C. State why it be necessary to adjust the settings of a variable injection timed fuel pump.

Q2. 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

Q3. With reference to safety valves fitted to waste heat boilers:

A. State with reasons the areas which should receive particularly close examination during a survey inspection;

B. Describe the procedure you, as Second Engineer would adopt when setting such valves at sea;

C. State the procedure to be adopted when reporting the setting of a waste heat boiler safety valve, to a classification society. 

Q4. With reference to timing chains:

A. Explain the causes of increasing chain slackness in service, using sketches to illustrate your answer;

B. State: each of the following: i. The effects of increased chain length:

ii. The method of assessing percentage increase in length:

C. describe how the effects of elongation are corrected:

D. State why a limit is placed on percentage chain elongation. State what measures you, as Second Engineer, would consider necessary after the correction procedure in Q.4(c) has been completed and the engine is running.

Q5. In a situation where the main engine control system suddenly fails and it is not possible to rectify this immediately

A. Explain the action that a 2nd engineer should take.

B. State the instruction that the 2nd engineer should issue in order to ensure the continued safe and effective operation of the engine.

Q6. With reference to main engine starting and reversing:

a) Define the function of the automatic valve and how it is controlled.

b) State what provisions are made to control the engine in the event of automatic valve failure.

c) Define the purpose of interlocks and blocking devices, differentiating between their functions.

Q7. State how each of the following practices affect piston ring life: (a) Nitriding of rings, (b) Chromium plating of ring grooves, (c) Contouring of rubbing faces, (d) Carbon or copper coating of rubbing faces.

Q8. With reference to crossheads:

a) Describe with sketches one arrangement whereby lubricant is fed to top end bearings, slippers, and guide.

b) Explain why the clearances of each top-end bearings are of vital importance.

c) state why booster pumps are sometimes used to feed lubricant to top end bearings.

Q9. (a) Describe how it is determined whether a crankshaft was twisted during a major “smash up” in a main engine.

(b) Explain where twisting is most likely to occur.

(c) Specify with reasons the degree of twisting that might be accommodated without correction

(d) Explain briefly what adjustments and precautions should be instituted when putting an engine with a twisted crankshaft back into service.