MEP-Oct-2021
Q1. With reference to the large two-stroke engine: (a) Explain how abnormal and excessive cylinder liner wear is caused, state how it can be detected; (b) explain the effects and consequences of excessive cylinder liner wear; (c) explain how abnormal cylinder linear wear may be prevented.
Q2. When the 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 seawater inlet chest and valves; (b) Forward end of ship; (c) Propeller and stern bush;.
Q3 (a) Sketch and explain any two methods used to prevent the distortion of ships plates and frames during major welded hull repairs in dry dock. (b). Explain how EACH of the following hull defects should be dealt with; (i). A cracked weld; (ii). A severe indentation in way of a frame; (iii). Surfaces suffering from general corrosion although the extent of wastage does not warrant plate replacement; (iv). A bilge head fractured at the forward end.
Q4. Describe the procedure to be undertaken when, upon a routine schedule for changing the fuel injector on the main engine, it is found that the injector body is seized and cannot be removed by conventional means.
Q5. With reference to Auxiliary boiler safety valve; 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.
Q6. List out all the potential hazards with regard to cylinder head lifting job during main engine overhaul. As a second engineer, explain how do you carry out a risk assessment for the above-mentioned job.
Q7. With the aid of a simple sketch, explain the “trouble spots” in a basic air-conditioning unit with reference to your sketch, explain the following: - i. How the problem of the increase in humidity of cooled air is overcome? ii. How discomfort caused by the excessive drying effect of heated air is overcome?;
Q8. 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.;
Q9. Under Continuous survey of machinery (CSM) bottom end bearing of a large 2stroke slow speed engine is due for the survey; A. As 2nd engineer, explain the procedure involved in the complete inspection of a bottom end bearing; B. List the precaution to be taken; C. Indicate the reasons for possible defects which could be encountered and state how they may be rectified; D. What tests are carried out on completion of survey and re-assembly.
Q3 (a) Sketch and explain any two methods used to prevent the distortion of ships plates and frames during major welded hull repairs in dry dock. (b). Explain how EACH of the following hull defects should be dealt with; (i). A cracked weld; (ii). A severe indentation in way of a frame; (iii). Surfaces suffering from general corrosion although the extent of wastage does not warrant plate replacement; (iv). A bilge head fractured at the forward end.
Q4. Describe the procedure to be undertaken when, upon a routine schedule for changing the fuel injector on the main engine, it is found that the injector body is seized and cannot be removed by conventional means.
Q5. With reference to Auxiliary boiler safety valve; 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.
Q6. List out all the potential hazards with regard to cylinder head lifting job during main engine overhaul. As a second engineer, explain how do you carry out a risk assessment for the above-mentioned job.
Q7. With the aid of a simple sketch, explain the “trouble spots” in a basic air-conditioning unit with reference to your sketch, explain the following: - i. How the problem of the increase in humidity of cooled air is overcome? ii. How discomfort caused by the excessive drying effect of heated air is overcome?;
Q8. 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.;
Q9. Under Continuous survey of machinery (CSM) bottom end bearing of a large 2stroke slow speed engine is due for the survey; A. As 2nd engineer, explain the procedure involved in the complete inspection of a bottom end bearing; B. List the precaution to be taken; C. Indicate the reasons for possible defects which could be encountered and state how they may be rectified; D. What tests are carried out on completion of survey and re-assembly.
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