Q7. With reference to air receivers:
(a) explain why air receivers are prone to corrosion; (3)
(b) state how corrosion can be prevented; (3)
(c) if significant corrosion is detected during a regular inspection explain how the air receiver may still be safely used in service until a permanent repair can be effected. (4)
Q5. (a) Describe the procedure for entry into, and inspection of, the inside of a starting air receiver, stating the types of defects which may be present with their possible causes. (12)
(b) Describe the procedure of closing up the air receiver and the initial pressurisation to working pressure. (4)
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