MEP-April-2019
Q1. With respect to the operation of the two-stage air compressor. Explain:
A. The causes of the occasional lifting of the 2nd stage relief valve.
B. Breakage of valve plates.
C. Puncture of bursting disc of 1st stage intercooler.
D. Noticeable reduction in the capacity of the compressors over a period of time.
Q2. Describe TWO methods of tracing a superficial crack in a marine machinery component. Explain the procedure for arresting the propagation of a crack in a machinery component.
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. Abnormal vibration has been observed in an HFO purifier while in operation. Explain the areas you plan to investigate for rectifying the faults and put the purifier back to normal operations keeping in view that no reduction in vibration has been noticed even after de-sludging the purifier couple of times.
Q5. Describe the procedure for overhauling a boiler safety valve and explain using sketches where necessary those parts, which require close attention. Also, describe the procedure setting of boiler safety valves.
Q6. A. State the circumstances owing to which it may be necessary to renew a cylinder liner; B. Explain how the cylinder liner is removed and fitted back; C. State the important checks to be made on the engine before after fitting.
Q7. Describe with a neat sketch the principle and operation of the Biological Sewage treatment plant. (a) What do you mean by B.O.D? What is the significance of B.O.D? (b) What are the discharge criteria according to MARPOL Regulations? (c) What routine maintenance is carried out on such Sewage treatment plants? Sewage Treatment
Q8. Describe the procedure to remove a seized fuel injector body from the cylinder head when it could not be removed by conventional means.
Q9. List the maintenance routines you plan to carry out on the deck hydraulic cranes, winches and mooring machineries before arrival port after a long voyage, considering the fact that cargo operation is solely dependent on the proper functioning of the crane and winches.
Q2. Describe TWO methods of tracing a superficial crack in a marine machinery component. Explain the procedure for arresting the propagation of a crack in a machinery component.
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. Abnormal vibration has been observed in an HFO purifier while in operation. Explain the areas you plan to investigate for rectifying the faults and put the purifier back to normal operations keeping in view that no reduction in vibration has been noticed even after de-sludging the purifier couple of times.
Q5. Describe the procedure for overhauling a boiler safety valve and explain using sketches where necessary those parts, which require close attention. Also, describe the procedure setting of boiler safety valves.
Q6. A. State the circumstances owing to which it may be necessary to renew a cylinder liner; B. Explain how the cylinder liner is removed and fitted back; C. State the important checks to be made on the engine before after fitting.
Q7. Describe with a neat sketch the principle and operation of the Biological Sewage treatment plant. (a) What do you mean by B.O.D? What is the significance of B.O.D? (b) What are the discharge criteria according to MARPOL Regulations? (c) What routine maintenance is carried out on such Sewage treatment plants? Sewage Treatment
Q8. Describe the procedure to remove a seized fuel injector body from the cylinder head when it could not be removed by conventional means.
Q9. List the maintenance routines you plan to carry out on the deck hydraulic cranes, winches and mooring machineries before arrival port after a long voyage, considering the fact that cargo operation is solely dependent on the proper functioning of the crane and winches.
Comments
Post a Comment