What does AFFF stand for in fire-fighting operations?

AFFF stands for Aqueous Film Forming Foam, which is a fire-fighting agent used to suppress flammable liquid fires effectively. This foam creates a thin film that floats on the surface of the burning liquid, cutting off the oxygen supply and cooling the blazing material. The unique characteristic of AFFF is its ability to spread rapidly across the surface of the liquid, forming a barrier that prevents re-ignition and helps in extinguishing the fire more efficiently.

The use of AFFF is particularly suited for firefighting in scenarios involving hydrocarbons such as oil spills or fuel fires, where its water content can help with cooling but is also effective in forming a blanket over the fuel. This comprehensive approach to fire suppression highlights the significance of AFFF in modern fire-fighting operations, ensuring that not only are fires extinguished, but re-ignition is also prevented.