🔍 Key Concepts

• Fixed CO2 fire suppression systems and how they work in machinery spaces • The danger CO2 poses to humans in an enclosed space • The purpose of a pre-discharge alarm in an engine room

💭 Think About

• Ask yourself: What is CO2 going to do to the oxygen level in that space once it is released? • Think: When that alarm sounds, are you supposed to stay and fight the fire, or take action to protect personnel first? • Consider which option focuses on your personal safety versus trying to enhance the fire attack immediately.

✅ Before You Answer

• Verify what the alarm is warning you about: is it a fire alarm or a CO2 release alarm? • Check which action must occur before CO2 actually floods the engine room. • Confirm which choice best reflects standard abandon space / evacuation procedures when a fixed system is about to discharge.