Q1. In view of the number of fatalities involving inert gas used for firefighting purposes, your company is considering alternative methods of protection for the machinery spaces. As Second Engineer, compile a letter to the company expressing your views for the retention or rejection of inert gas systems and stating your opinion on viable alternative systems.
Q2. It is important to maintain the quality of lubricating oils in main and auxiliary diesel engines. A. Discuss critically the methods used to maintain crankcase oils on the various ships in which you have served. B. Drawing conclusions from (A) state, as second engineer, your preferred methods of maintaining crankcase oil quality.
Q3. A. Describe the preparation necessary before the application (in dry dock) of sophisticated or approved long life coating to the underwater surface of the hull.
B. State the significance of the roughness profile.
C. List the different sophisticated coatings which are available.
Q1. A. State the standing instruction you, as Second Engineer, would issue with respect to the action to be taken in the event of a boiler uptake fire; B. State how the incidence of uptake fires may be minimized; C. State the reasons for blow – back from the furnace of an auxiliary boiler; D. State the standing instruction you, as Second Engineer would issue with respect to the avoidance of boiler furnace blow – back.
Q5.A. Sketch a watertight door and frame showing the manner of attachment to the bulkhead and the additional reinforcement carried by the bulkhead to compensate for the aperture.
B. Explain how water tightness of the door and frame mating surfaces is ensured with hydrostatic pressure tending to force the faces apart.
C. (i) Describe the means of closing the door;
(ii) State the number of closing stations and the position of each.
Q6. Sketch and describe a system for oil monitoring of bilge and tanker ballast discharges. What inputs are recorded? Explain the difficulties encountered with the efficient operation of the oil monitoring system.
Q7. How does the cargo pumping system of a product carrier differ from that of an oil tanker? Sketch the cargo pumping system of a product carrier.
Q8. A. Describe a vacuum sewage system B. With reference to the system describe in (A): i. State ONE advantage of the system; ii. State why a holding tank may be required to be fitted to the system; iii. State the problems resulting from the retention of untreated sewage in a holding tank
Q8. A. Explain the action of EACH of the following metallurgical mechanism:
(i) Creep; (ii) Brinelling; (iii) Fretting; (iv) Fretting corrosion;
B .State, with reasons, where EACH of the mechanisms in occur in ship propulsion System.
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