(a) Sketch a fixed Carbon Dioxide (CO2) fire fighting system, label its main components. (8)

(b) Describe the sequence of operations for discharging a fixed CO2 system in a ship's engine room, assuming a fire has been detected and the alarm has been raised. (8)

(c) What is the purpose of the time delay mechanism in a fixed CO2 system, and how does it contribute to crew safety? (4)