Q9. a) Describe the routine and preventive maintenance procedures carried out on a plate-type cooler used on ships. Explain the steps involved in dismantling. Inspection, cleaning, and reassembly of the plates. (8)
b) Explain the procedure for detecting internal leakage in a plate -type cooler. What are the indications of leakage during operation, and how can they be confirmed during maintenance? (4)
c) Describe the backflushing procedure for a plate-type cooler when is it recommended, and how does it help in maintaining the efficiency of the heat exchanger. (4)
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