What is commonly used for 2-D firefighting?

AFFF foam, or Aqueous Film Forming Foam, is particularly effective for 2-D firefighting because it forms a film that spreads over the surface of a burning liquid, such as gasoline or oil. This film not only helps to smother the flames but also cools the burning material and prevents re-ignition. AFFF foam is specifically designed for flammable liquid fires, making it an ideal choice for situations where such fuels are present.

While water spray may be effective in many situations, it can be less efficient on flammable liquid fires as it does not create a sealing layer over the fire. Dry powder can extinguish flames by interrupting the chemical reaction in the fire, but it does not provide the same cooling effect or re-ignition prevention as foam. Carbon dioxide is suitable for class B and C fires, particularly electrical fires, as it displaces oxygen, but it may not be as effective for creating a protective barrier over liquids, which is crucial in 2-D firefighting scenarios.