MEP-August-2019
Q1. With reference to reciprocating air compressors explain the cause of the following faults.
A. Collapse of the discharge valve springs;
B. Breakage of plate valves;
C. Overheating of the discharge air with an unrestricted air intake;
D. Inoperative piston rings.
Q2. What is Metal-locking? What types of repairs are carried out by metal-locking? Describe the repair procedure using Metal-Locking.
Q3. 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 increase in humidity on cooled air is overcome?
ii. How discomfort caused by the excessive drying effect of heated air is overcome?
Q4. Describe the procedure for overhauling Main Air compressor Valves (Plate type) and explain which parts require close attention. Using sketches where necessary. Also, describe the procedure for testing of these compressor valves.
Q5. Explain why auxiliary engine bottom-end bolts are prone to failure, even under normal running conditions. Identify those features, incorporated into the design of bottom-end bolts, to inhibit failure. Explain how this tendency is either aggravated or inhibited during maintenance and what checks are to be carried out.
Q6. Enumerate the maintenance routines carried out for the proper functioning of the following systems:
A. Water hyper mist system
B. Smoke detection system
C. Quick closing valves
D. Fire hydrants and hoses.
Q7. 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.
Q8. If soon after joining a motor ship, you found a number of holding down bolts slack and fretting to have occurred in the area of slack bolts describe how you would handle the situation?
Q9. During the past 4 months since you joined the ship as 2nd engineer a number of main engine exhaust valve have suffered from cracking and corrosion at the seating faces; Write a report to the superintendent engineer covering the following points;
A. An explanation detailing how the problem becomes evident;
B. Your action upon recognizing the extent and seriousness of the problem;
C. Your reasoned view regarding the possible cause of the problem;
D. Your recommendation to avoid future incidents.
A. Collapse of the discharge valve springs;
B. Breakage of plate valves;
C. Overheating of the discharge air with an unrestricted air intake;
D. Inoperative piston rings.
Q2. What is Metal-locking? What types of repairs are carried out by metal-locking? Describe the repair procedure using Metal-Locking.
Q3. 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 increase in humidity on cooled air is overcome?
ii. How discomfort caused by the excessive drying effect of heated air is overcome?
Q4. Describe the procedure for overhauling Main Air compressor Valves (Plate type) and explain which parts require close attention. Using sketches where necessary. Also, describe the procedure for testing of these compressor valves.
Q5. Explain why auxiliary engine bottom-end bolts are prone to failure, even under normal running conditions. Identify those features, incorporated into the design of bottom-end bolts, to inhibit failure. Explain how this tendency is either aggravated or inhibited during maintenance and what checks are to be carried out.
Q6. Enumerate the maintenance routines carried out for the proper functioning of the following systems:
A. Water hyper mist system
B. Smoke detection system
C. Quick closing valves
D. Fire hydrants and hoses.
Q7. 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.
Q8. If soon after joining a motor ship, you found a number of holding down bolts slack and fretting to have occurred in the area of slack bolts describe how you would handle the situation?
Q9. During the past 4 months since you joined the ship as 2nd engineer a number of main engine exhaust valve have suffered from cracking and corrosion at the seating faces; Write a report to the superintendent engineer covering the following points;
A. An explanation detailing how the problem becomes evident;
B. Your action upon recognizing the extent and seriousness of the problem;
C. Your reasoned view regarding the possible cause of the problem;
D. Your recommendation to avoid future incidents.
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