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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 Moldovan engineer and chemist Aleksandr Loran in 1902. [1] The surfactants used must produce foam in concentrations of ...
After testing a dry type 2 foam in several situations, Johnny Murdock notes, "The emerging consensus is that the dryer foams (type II; maybe type I) should be used to suppress vapors, protect unburned structures, build wildland fire lines involving unburned fuels; … and that structural fire suppression requires a wetter foam (type IV or type ...
Foam depopulation or foaming is a means of mass killing farm animals by spraying foam over a large area to obstruct breathing and ultimately cause suffocation. [1] It is usually used to attempt to stop disease spread. [2] Foaming has also been used to kill farm animals after backlogs in slaughtering occurred during the COVID-19 pandemic. [3]
As of 2022, Phos-Chek LC-95A is the most used fire retardant in the world. [8] A Phos-Chek tank trailer at Ramona Airport. Phos-Chek is produced in several colors, [9] including off-white, [10] red iron oxide, [11] and a fugitive mixture that is red when dispersed but gradually fades to an earth-tone when exposed to sunlight. [11]
In pressurized gas fires the foam is applied to extinguish the fuel fires around the blowout and cool heated metal. The Purple-K stream is then discharged into the blowout to "snuff" it out. These systems can be mounted on vehicles, skid mounts or installed as permanent stations. Application is from twin hose lines connected together at the ...
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(Attack line) A use classification of a fire fighting hose connected to output of a pump or other pressure source (e.g., gravity). Fire hose used to apply water or other fire fighting agent directly to a fire or burning substance. Typically of 2 + 1 ⁄ 2 inches (64 mm) diameter or less in the United States. Historically 1.5 inch hose was the ...
While foam rollers can help loosen tight muscles and relieve painful knots, they should be used carefully. Improper foam rolling can injure several parts of the body — for instance, your knees.