MEP-November-2019
Q1. Describe TWO methods of tracing a subsurface crack in a machinery component. Explain with reasons which one of the two methods mentioned above is the most appropriate for detecting cracks in engine crankshafts.
Q2. What is Rocking test of Deck Crane? Explain the procedure of rocking test. Tabulate and indicate fault finding procedure. What is the action taken if deviation is out of limit?
Q3. 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 back the purifier back to normal operations keeping in view that no reduction in vibration has been noticed even after desludging the purifier couple of times.
Q4. With respect to the operation of two stage air compressor. Explain: A. The causes of occasional lifting of 2nd stage relief valve. B. Breakage of valve plates. C. Puncture of bursting disc of 1st stage intercooler. D. Noticeable reduction in capacity of the compressors over a period of time.
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. 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?
Q7. Describe with a neat sketch the principle and operation of Biological & Chemical Sewage treatment plant. (a) What do you meant 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 plant?
Q8. 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.
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. What is Rocking test of Deck Crane? Explain the procedure of rocking test. Tabulate and indicate fault finding procedure. What is the action taken if deviation is out of limit?
Q3. 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 back the purifier back to normal operations keeping in view that no reduction in vibration has been noticed even after desludging the purifier couple of times.
Q4. With respect to the operation of two stage air compressor. Explain: A. The causes of occasional lifting of 2nd stage relief valve. B. Breakage of valve plates. C. Puncture of bursting disc of 1st stage intercooler. D. Noticeable reduction in capacity of the compressors over a period of time.
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. 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?
Q7. Describe with a neat sketch the principle and operation of Biological & Chemical Sewage treatment plant. (a) What do you meant 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 plant?
Q8. 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.
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.
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