What does 'total flooding' mean?

• A. A system that only protects critical equipment
• B. A system intended to discharge a clean agent throughout an enclosed space so the entire volume is protected
• C. A system that releases agent into the open air
• D. A system dedicated to a single room's cabinet equipment

Answer: (B)

Total flooding means releasing the clean agent so that it fills the entire enclosed space, reaching the design concentration uniformly throughout the whole volume. The goal is to create a protective atmosphere that covers every part of the space, not just a specific piece of equipment or an outdoor area. Designing for total flooding involves calculating the room’s volume, accounting for leaks and any ventilation, and ensuring the agent remains at the required concentration for the specified time, while also considering occupant safety and necessary alarms or controls.