Q5. (a) Name the safety devices fitted on 2 Stage air compressors on ships. Explain their functional purpose as well as location of fitment, using a schematic diagram. (12)
(b) State the maintenance and checks carried out periodically in order to keep them efficient. (4)
Q5. To achieve the optimum performance from a main air compressor, describe the routine maintenance necessary on the following components.
a) unloader. (4)
b) Air intake filter (4)
c) Suction/Discharge valves (4)
d) Intercoolers (4)
Q1. Describe the examination you will carry out on the following parts of Air Compressor,
a) Suction and delivery valves and seats. (4)
b) Relief valves and bursting discs. (4)
c) coolers and cooling passages. (4)
d) Piston and piston rings. (4)
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