What should be done immediately if the CO2 flooding system alarm sounds?

When the CO2 flooding system alarm sounds, the immediate priority is safety. The alarm indicates that there may be a release of carbon dioxide, which can pose a significant risk due to its asphyxiating properties. Evacuation and securing the area ensures that personnel are removed from potential danger, minimizing the risk of injury or fatalities from CO2 exposure.

Prompt evacuation allows for the timely management of the situation, ensuring that everyone is at a safe distance while appropriate personnel can address the alarm. Additionally, securing the area prevents unauthorized entry, protecting both individuals and emergency responders as they assess the situation and take necessary actions.

Other actions mentioned, like continuing operations, conducting a search for the source of the alarm, or calling for assistance, can delay necessary evacuation, increasing risk. In the event of a CO2 alarm, the correct and immediate response is to prioritize evacuation and securing the area.