Upon activation of the extinguishing system, which action should be taken with energy sources?

• A. Shutoff
• B. Isolate energy
• C. Deactivate system
• D. Cut power to sensors

Answer: (A)

When a kitchen extinguishing system is activated, the priority is to remove energy that could feed the fire or create hazards for responders. Shutting off energy sources—such as electrical power to equipment in the hood and any gas supplies to cooking appliances—helps prevent re-ignition, stops fuel flow, and reduces risks from energized components as the suppression agent does its job. This direct action is the clearest, most effective step to stabilize the area during discharge of the agent and to protect anyone nearby.

Isolating energy can be part of the process, but it’s less precise because it may not guarantee all power and fuel sources are fully disconnected. Deactivating the system would defeat the purpose of the activation and prevent the agent from doing its job. Cutting power only to sensors doesn’t address the other energy sources that could keep the area hazardous or fuel a fire.