Which NFPA standard requires turning off fuel or electrical power to cooking appliances upon activation of the extinguishing system?

• A. NFPA 96
• B. NFPA 13
• C. NFPA 101
• D. NFPA 72

Answer: (A)

When a kitchen hood extinguishing system is discharged, the controls should isolate the cooking equipment by cutting off both the fuel supply and the electrical power. This isolation helps prevent re-ignition, reduces hazards from energized equipment during suppression, and ensures a safer environment for responders and occupants.

This requirement is specified in NFPA 96, which covers commercial kitchen hood fire protection and its associated equipment and controls. It specifically addresses shutting down fuel and electrical supplies to cooking appliances upon activation of the extinguishing system.

Other standards don’t address this exact control in the same way: NFPA 13 deals with automatic sprinkler systems design and installation, NFPA 101 focuses on life safety and means of egress, and NFPA 72 covers fire alarm systems.