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Firefighting Foam & PFAS: What You Need to Know - Vanguard
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Fire Fighting Using Foam: The Three Most Important Things To …
Firefighting foam is a foam used for fire suppression. Its role is to cool the fire and to coat the fuel, preventing its contact with oxygen, thus achieving suppression of the combustion. Firefighting foam was invented by the Russian engineer and chemist Aleksandr Loran in 1902. The surfactants used must produce … See more • Low-expansion foams, such as aqueous film forming foams (AFFFs), have an expansion ratio of less than 20, are low-viscosity, mobile, and can quickly cover large areas. • Medium-expansion foams have an expansion … See more Class B foams are designed for class B fires—flammable liquids. The use of class A foam on a class B fire may yield unexpected results, as class A foams are not designed to contain the explosive vapours produced by flammable liquids. Class B foams … See more Water has long been a universal agent for suppressing fires, but is not best in all cases. For example, water is typically ineffective on oil fires, and can be dangerous. Fire-fighting foams were developed for extinguishing oil fires. In 1902, a method … See more • Compressed air foam system • Foam path • Timeline of events related to per- and polyfluoroalkyl substances See more Class A foams were developed in the mid-1980s for fighting wildfires. Class A foams lower the surface tension of the water, which assists in the wetting and saturation of Class A fuels … See more Every type of foam has its application. High-expansion foams are used when an enclosed space, such as a basement or hangar, must be quickly filled. Low-expansion foams are used on burning spills. AFFF is the best for spills of jet fuels, FFFP is … See more Studies have shown that PFOS is a persistent, bioaccumulative, and toxic pollutant. It was added to Annex B of the Stockholm Convention on Persistent Organic Pollutants See more WebFire extinguishment requires appropriate foam concentrate at the right mixing ratio, foam proportioning and foam discharge equipment with a controlled application rate. There are 2 main application techniques of … WebThe overall goal of this workshop, which was held in October 2024, was to support enhanced firefighter safety & health and control Class B fires, by developing a strategic fire service roadmap to effectively and efficiently transition from fluorinated foam (i.e., AFFF) usage to fluorine free foam technology. Topics include firefighting foams ... how to self adjust atlas