Category: EK GENERAL

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During bunkering operations, a section of deck bunker line starts leaking fuel oil from a pinhole at the mid section of the pipe. (a) As Chief Engineer Officer, state the immediate actions to be taken to avoid a potential pollution incident; (6) (b) Explain how a permanent repair could be made, stating any precautions to…

EK General Dec 2019 (Q7)

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Following a serious machinery space fire, the engine room was abandoned and an inert gas smothering agent used to extinguish the fire. Explain the sequence of events which led to this course of action and the subsequent actions taken to enable the vessel to proceed on passage. (10) Fire Dec 2019 (Q7)

EK General Dec 2019 (Q6)

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(a) Sketch a diagrammatic arrangement of a fully automatic direct expansion domestic refrigeration system. (5) (b) State, with reasons, FIVE desirable thermodynamic properties of a refrigerant. (5)Reefer & A/C Dec 2019 (Q6)

EK General Dec 2019 (Q5)

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With reference to multi-tubular heat exchangers, explain how EACH of the following contribute to satisfactory performance: (a) Tube wall thickness (2) (b) Dense population of tubes in the tube plate (2) (c) Tube materials selection (2) (d) Coolant flow rates (2) (e) Unimpeded passage of coolant at entry and exit from the tubes (2) Heat…

EK General Dec 2019 (Q4)

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(a) Describe TWO system of priming centrifugal pumps (6) (b) List the advantages of EACH of the priming methods described in part (a) (4) Pumps & system Dec 2019 (Q4)

EK General Dec 2019 (Q3)

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Describe, with the aid of a sketch, the principle of operation of a radial lip stern tube sealing arrangement for an oil filled stern tube, which incorporates an air space and is designed to prevent pollution. (10) Propeller, shafting & thrusters Dec 2019 (Q3)

EK General Dec 2019 (Q2)

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(a) Describe, with the aid of a sketch, the principle of operation of a modern shaft torsion meter. (8) (b) Explain why it is important in terms of hull efficiency to measure and compare shaft torque and speed. (2) Propeller, shafting & thrusters Dec 2019 (Q2)

EK General Dec 2019 (Q1)

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(a) State THREE modes of heat transfer. (1) (b) Describe how the design requirements of EACH of the following are met, detailing the materials used to promote or retard heat transfer (i) Plate cooler in central cooling system; (3) (ii) Meat room in domestic provisions space; (3) (iii) Auxiliary steam system pipelines. (3) Heat exchanger…

EK General Oct 2019 (Q8)

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Accidents have occurred due to premature or accidental release of CO₂ into the machinery spaces. (a) State the safety procedures that the Chief Engineer Officer should adopt with respect to maintenance being carried out on the system by shore contractors. (3) (b) Explain why the Chief Engineer and ships staff should still have to check…

EK General Oct 2019 (Q7)

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