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A normally occupied control room is protected by a carbon dioxide total flooding system inherited from an older plant. The owner wants to keep it because the equipment is valuable and the enclosure is tight. What is the primary life-safety issue?
CO2 is harmless in occupied rooms if the enclosure leakage is low.
Personnel exposure to extinguishing concentrations must be addressed with controls, alarms, evacuation time, lockout, and consideration of safer alternatives.
The only issue is whether the cylinders fit through the door.
CO2 systems do not need discharge alarms because the gas is visible.
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