Q9.a) What are the indications of a tube leak in a water tube boiler on a ship? Describe the signs and symptoms that engineers should monitor to detect tube leaks early. (8)
b) Outline the procedure for plugging a leaking tube in a water tube boiler. Include the steps for isolating the affected area, preparing the tube and plug for plugging and ensuring the repair is secure and complaint with safety standards. (8)
Q8. With reference to the marine boiler operation, answer the following:
(a) What do you understand by ‘accumulation of pressure’ test? Explain. (8)
(b) Why is a Boiler water circulating pump required for ships fitted with an Exhaust gas Economiser? Explain with a line diagram. (8)
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