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What is the full form of AFFF?

What is the full form of AFFF? Correct Answer Aqueous Film Forming Foam

Explanation:

Aqueous Film Forming Foam Concentrate  (AFFF):

  • Available in either a 1%, 3% or 6% type concentrate.
  • These concentrates are manufactured from synthetic type materials such  as: 
  1. Synthetic foaming agents (hydrocarbon surfactants) 
  2. Solvents (i.e., viscosity leveler, freezing point depressant, foam booster) 
  3. Fluoro Chemical surfactants 
  4. Small amounts of salts 
  5. Foam stabilizers (slow drainage, increases fire resistance) 
  • AFFF generated foams extinguish hydrocarbon flammable liquid fires the same way as the protein or fluoro protein foams; however, there is an additional feature.
  • An aqueous film is formed on the surface of the flammable liquid by the foam solution as it drains from the foam blanket.
  • This film is very fluid and floats on the surface of most hydrocarbon fuels.
  • This gives the AFFF unequaled speed in fire control and knockdown when used on a typical hydrocarbon spill fire.
  • In certain circumstances, it is possible to notice the fire being extinguished by the "invisible" film before there is complete foam blanket coverage over the surface of the fuel.

 

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