Wet chemical systems protect fire hazards such as which components?

• A. Hoods, plenum, ducts, associated cooking appliances
• B. Electrical panels
• C. Floors and walls
• D. Outdoor areas

Answer: (A)

Wet chemical systems are specifically designed for grease-fire protection in commercial kitchens. They target the area most at risk—the cooking exhaust system and the appliances they serve. The agent is discharged into the hood, the plenum above it, and the ducts, coating surfaces with a saponifying wet chemical that turns fats and oils into a soapy layer. This cools the fire, renders grease less flammable, and helps prevent reignition, all while protecting the hood, ductwork, and connected cooking equipment like fryers and griddles. That focused protection explains why the system covers hoods, plenum, ducts, and related cooking appliances, rather than electrical panels, floors and walls, or outdoor areas, which require different types of suppression or protection.