Why Should We Use Foam in Liquid Fires?
15.02.2024
Many extinguishing agents are effective on flammable liquids. However, foam is the only agent that traps vapor and provides visible safety.
- Covering the surface of unignited flammable liquid with foam prevents the fire from starting.
- The water component in the foam cools the fuel surface.
- It prevents flammable vapors from escaping the fuel surface. Trapping vapors prevents them from finding an ignition source.
- It removes oxygen from the fuel vapors, preventing the formation of a flammable mixture.
- Foam can provide protection from flammable liquids for fire and rescue personnel in emergencies.
- Until safety measures are taken, foam can prevent danger and ensure post-fire safety.
- It emulsifies the fuel.
- Foams used today are of the mechanical type. Before use, they must be proportioned (mixed with water) and aerated. Four elements are required to produce quality foam:
- Foam concentrate
- Water
- Air
- Mechanical mixing
If any of these elements are missing or not properly proportioned, the result is low-quality foam.