Q4. a) Explain the construction, working and adjustment procedure of a high-lift safety valve used on marine boilers. (8)
b) Describe the procedure, purpose and safety precautions involved in conducting an accumulation of pressure test on a marine boiler. (8)
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)
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