Which system is primarily installed in areas where flammable cooking oils are used?

The wet chemical system is specifically designed for use in environments where flammable cooking oils and fats are utilized, such as commercial kitchens. This system uses a special mixture of water, potassium, and other agents that effectively cool the flames while also forming a barrier on the surface of cooking oils. This barrier prevents the ignition of vapors, thus reducing the risk of re-ignition after the initial suppression of the fire.

Wet chemical systems are essential because fires involving cooking oils behave differently than fires fueled by ordinary combustibles. The effectiveness of this system in targeting the unique challenges posed by grease fires makes it the preferred choice in such settings.

In contrast, carbon dioxide systems are more suitable for electrical fires or flammable liquids, dry-pipe systems are typically used in unheated buildings to prevent water from freezing, and preaction systems are a combination of wet and dry systems primarily found in environments where false alarms are a concern.