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Q4. With reference to pump selection, state any TWO types of pump for EACH of the following applications, stating why they are suitable.

(a) bilge pumping (2) (b) Cargo oil stripping (2)              (c) Sewage sludge (2)

(d) Lubricating oil circulating (2)               (e) Sea water circulating (2)

Q6. With reference to bacteria harmful to humans in drinking and washing water:

(a) state the constraints placed on the installation and use of systems for shipboard production of freshwater; (3)

(b) state the maintenance and treatment recommended for freshwater tanks; (3)

(c) describe how the entire freshwater system can be made free from bacteria; (3)

(d) state an acceptable residual value in the freshwater tanks to ensure the correct concentration of treatment in the system. (1)

Q8. The company, with which you are employed, requests that all Chief Engineer Officers prepare standing orders regarding the prevention and detection of fires in the machinery spaces. Compile such a list of recommendations to be submitted to central office. (10)

Q1. (a) Describe, with the aid of sketches, how the test pieces for a Class 1 pressure vessel are obtained. (6)

(b) List the tests which are carried out on the test pieces described in part (a). (4)

Q5. Describe, with the aid of a sketch, an electronic soft starting system that may be used for large a.c. induction motors. (10)

Q9. With reference to voltage variation profiles caused by load changes imposed on alternating current generators when starting large motors online:

(a) sketch a voltage dip, showing an acceptable recovery time; (2)

(b) state FOUR salient factors that cause the variation in part (a); (4)

(c) outline FOUR salient factors that assist recovery from the deviation shown in part (a). (4)

13. Explain, with the aid of a mid-ship half sectional sketch of a container ship, how strength is built into this type of vessel whilst still allowing access to the cargo holds. (10)

Q12. As Chief Engineer Officer on a new vessel which is experiencing severe aft end vibration at full-service speed, write a report to the Engineer Superintendent suggesting reasons for the vibration and recommendations for further sister vessels presently under construction. (10)