What is the function of detection zones in NFPA 2001?

• A. They reduce the cost of the system.
• B. They segment protected spaces to manage detection coverage and release logic.
• C. They determine the color coding of components.
• D. They replace the need for alarms.

Answer: (B)

Detection zones segment the protected space into discrete areas so the system can tailor detection coverage and control how the clean agent is released. By dividing the area, the control panel knows exactly which section has detected fire and can trigger release in that zone or execute a staged/partial release, rather than discharging everywhere at once. This targeted approach improves safety by limiting agent release to the affected area and allows the system to operate with occupancy and run-time considerations, coordinating with alarms and other control logic.

This isn’t about reducing cost, color coding components, or replacing alarms. Those aspects are separate: zoning doesn’t set costs or colors, and alarms remain part of the system while zoning governs where and how release occurs.