🔍 Key Concepts

• Fixed CO2 fire extinguishing systems remove oxygen from the space • The dangers of CO2 to humans in an enclosed space • Standard engine room fire procedures before releasing CO2 (ventilation, personnel, machinery)

💭 Think About

• Think about what happens to anyone still inside an engine room when CO2 is released into that closed space. • Consider what might pull fresh air (oxygen) into the engine room and make the CO2 less effective. • Ask yourself what moving equipment or running machinery could do to the spread of fire and the safety of the space when CO2 is released.

✅ Before You Answer

• Verify what must be done about personnel in the protected space before CO2 release. • Verify what must be done about ventilation and fans serving the protected space. • Verify what must be done about running machinery and fuel sources before activating the fixed CO2 system.