Aqueous Film-Forming Foam 3
Aqueous Film-Forming Foam 3 :
(AFFF) (1) A foam concentrate based on fluorinated surfactants plus foam stabilizers and diluted with water to form a 3 percent or 6 percent solution. The foam excludes air or oxygen and develops an aqueous film capable of suppressing a fire. (2) A fluorinated surfactant with a foam stabilizer that is diluted with fresh or sea water in 3 or 6 percent proportion. The foam formed forms as a barrier against oxygen, and develops an aqueous film on the fuel surface capable of suppressing fuel vapors. AFFF concentrates are normally used in conventional foam-making devices suitable for producing protein foams, and may also be applied through fixed or variable pattern water spray nozzles, if such equipment should be listed for this use. See also: Light Water
