What is the primary purpose of NFPA 72 in fire alarm system design?

• A. To specify building code structural requirements for fire-resistance ratings.
• B. To establish minimum requirements for installation, performance, testing, and maintenance of life safety fire alarm systems, including initiation, notification, and control functions.
• C. To regulate installation of fire suppression systems only.
• D. To define fire department response procedures.

Answer: (B)

NFPA 72 defines the minimum requirements for life-safety fire alarm systems, covering how they are installed, how they perform, how they are tested, and how they are maintained. It focuses on what happens when a fire event occurs: initiation devices (like detectors and pull stations) trigger alarms, occupants receive clear notification (sirens, strobes, voice announcements), and control functions (such as interlocks, elevator recall, and safety system coordination) operate reliably. This ensures the system will detect hazards, alert people, and support a safe and effective response.

It isn’t about building structural requirements or fire-resistance ratings, which are addressed by other codes and standards; it isn’t solely about installing fire suppression systems, which NFPA 13 covers; and it doesn’t define fire department response procedures, which are outside NFPA 72’s scope.