All types of foam systems require which capability?

• A. Automatic activation
• B. Remote control
• C. Self-activation
• D. Manual activation

Answer: (D)

Foam systems rely on a deliberate action by an operator to begin foam deployment. Releasing foam concentrate into the water stream is a controlled step that must be initiated by a person, ensuring conditions are right and allowing coordination with alarms and other suppression actions. Manual activation provides that explicit, verifiable trigger boundary so the system isn’t relied on automatic triggers that could occur during a false alarm or without proper confirmation.

Some foam designs may include automatic or remote options, but they are enhancements or secondary features. The fundamental, universal capability across foam systems is the ability to be started by manual activation.