Exam Question

### (a) Sketch and Label a Fixed CO2 Fire Fighting System
A fixed CO2 system is a high-pressure system designed for total flooding of a protected space, primarily the engine room or cargo holds. It extinguishes fire by displacing oxygen, reducing its concentration below the level required for combustion (typically below 15%).
**Main Components to be Labeled on the Sketch:**
1. **CO2 Cylinder Bank**: Multiple high-pressure steel cylinders containing liquid CO2 under approximately 58 bar of pressure at 20°C. Each cylinder is fitted with a discharge valve.