Which statement about automatic detection and actuation is correct?

• A. Automatic detection is optional.
• B. Automatic detection and automatic actuation shall be used.
• C. Automatic actuation is never used.
• D. Automatic detection is only for testing.

Answer: (B)

Automatic detection and automatic actuation work together to ensure immediate protection when a fire starts. Detection uses sensors that monitor for signs of fire and send a signal to the system’s control to respond. Actuation means the system releases the clean agent automatically, without someone manually triggering it. This automatic combination is required to provide fast, reliable protection even if occupants are unaware or unable to act. Relying on manual detection or manual release would introduce delays and reduce effectiveness, and treating detection as only something for testing misses the purpose of real-fire protection.