Exam Question
Describe CO2 fixed fire fighting system for machinery spaces and cargo spaces of a bulk carrier. Explain safety precautions taken prior to release of CO2 to the engine room (20)
Class 4 (4th Engineer)
SSEP
📅 Oct 2023
Reference Answer
### **Total Flooding Fixed CO2 Fire Fighting System**
A fixed CO2 firefighting system is a total flooding system designed to extinguish fires in machinery spaces, pump rooms, and cargo spaces by rapidly discharging a large quantity of Carbon Dioxide (CO2). The system extinguishes fire primarily by displacing oxygen, reducing the oxygen concentration in the protected space from 21% to below 15%, thus smothering the fire. A secondary effect is cooling, as the liquid CO2 expands into a gas.
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### **System Description and Components**
A fixed CO2 firefighting system is a total flooding system designed to extinguish fires in machinery spaces, pump rooms, and cargo spaces by rapidly discharging a large quantity of Carbon Dioxide (CO2). The system extinguishes fire primarily by displacing oxygen, reducing the oxygen concentration in the protected space from 21% to below 15%, thus smothering the fire. A secondary effect is cooling, as the liquid CO2 expands into a gas.
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### **System Description and Components**
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