Foam used for firefighting is classified into which two categories?

Foam used for firefighting is generally classified into two main categories known as Aqueous Film Forming Foam (AFFF) and Non-Aqueous Film Forming Foam (F3). This classification corresponds to the methods and materials used in the foam’s formulation, determining how they behave against different types of flammable liquids.

The classification into these categories is essential for understanding the appropriate applications of foam during firefighting operations. For instance, AFFF is effective in quickly suppressing flammable liquid fires by providing a barrier between the fuel and the air, whereas other types of foam may not form the same level of aqueous film or may be optimized for different fire scenarios. This knowledge helps firefighters choose the right type of foam for a specific incident based on the nature of the fire and the materials involved.

Understanding foam classifications allows for better preparation and response to various fire situations, enhancing operational effectiveness and safety in firefighting practices.