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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.
Once existing stocks of charges and parts are depleted, the UL listings on these units will be void and they will require replacement with other extinguisher types. Film-forming fluoroprotein contains naturally occurring proteins from animal by-products and synthetic film-forming agents to create a foam blanket that is more heat resistant than ...
Low expansion foam expands less than 20 times its original size. These systems can be installed in a variety of places but are commonly found in places where hydrocarbons are stored. Low expansion foam systems when using film forming work by making a blanket of foam over the burning liquid to both cool it down and suppress the vapors.
Purple-K, also known as PKP, is a dry-chemical fire suppression agent used in some dry chemical fire extinguishers. [1] It is the second most effective dry chemical in fighting class B (flammable liquid) fires after Monnex (potassium allophanate), and can be used against some energized electrical equipment fires (USA class C fires). [2]
The material, known formally as aqueous film-forming foam, or AFFF, was developed in the 1960s to fight extremely hot, dangerous fires started by flammable liquids. The foams containing forever ...
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 (AFFF) (pronounced "A-Triple-F", also called "Class B"): bubbles that act as surfactant to coat and penetrate ordinary fuels (e.g., wood, paper) to prevent them from burning at normal temperatures; also used on "Class B" (oil/gasoline) fires to spread a non-volatile film over the surface of the fuel.
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
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