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In the mid-1960s, the US Navy developed aqueous film-forming foam (AFFF). This synthetic foam has a low viscosity and spreads rapidly across the surface of most hydrocarbon fuels. A water film forms beneath the foam, which cools the liquid fuel, stopping the formation of flammable vapors.
APW extinguishers are commonly converted into makeshift CAFS extinguishers by drilling two 1.6–3.2 mm (1 ⁄ 16 – 1 ⁄ 8 in) holes in the pickup tube. The unit is then filled with 5.7 litres (1.5 US gal) of water and Class A foam, aqueous film forming foam (AFFF), film-forming fluoroprotein (FFFP) or commercial detergent is added to the water in a 1% ratio for class A fires and a 3–6% ...
For years, departments used aqueous film-forming foam (AFFF) that contained high concentrations of PFAS. The state's new ban on "legacy foams" is possible because new, PFAS-free foams are available.
Aqueous film forming foam, or aqueous fire fighting foam Australian Farmers' Fighting Fund , a body providing financial, legal, and professional assistance to farmers in Australia Topics referred to by the same term
The multi-case agreement resolves claims concerning a fire-repelling PFAS called aqueous film forming foam, or AFFF, that polluted public drinking water sources. In 2018, ...
They also were used in firefighting foam, a material routinely used in fire training centers, airports and military bases. The material, known formally as aqueous film-forming foam, or AFFF, was ...
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