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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 Russian engineer and chemist Aleksandr Loran in 1902. [1]
The unit is then filled with 1.5 US gallons (5.7 L) of water and class A foam, AFFF, FFFP or commercial detergent is added to the water in a 1% ratio for class A fires and a 3%-6% ratio for class B fires. Typically, the tip of the smooth-bore application nozzle is then cut off to allow the foam to properly expand.
The fire triangle or combustion triangle is a simple model for understanding the necessary ingredients for most fires. [1] The triangle illustrates the three elements a fire needs to ignite: heat, fuel, and an oxidizing agent (usually oxygen ). [2] A fire naturally occurs when the elements are present and combined in the right mixture. [3]
In fire classes, a Class B fire is a fire in flammable liquids or flammable gases, petroleum greases, tars, oils, oil-based paints, solvents, lacquers, or alcohols. [1] For example, propane, natural gas, gasoline and kerosene fires are types of Class B fires. [2] [3] The use of lighter fluid on a charcoal grill, for example, creates a Class B ...
Tests for fire resistance of record protection equipment. The following classifications may be attained when testing in accordance with UL 72. Class 125 Rating. This rating is the requirement in data safes and vault structures for protecting digital information on magnetic media or hard drives.
Phos-Chek. C-130E Hercules equipped with a Modular Airborne FireFighting System makes a Phos-Chek fire retardant drop in Southern California in October 2003. Phos-Chek is a brand of long-term [1] fire retardants, class A foams, and gels manufactured by Perimeter Solutions, headquartered in Clayton, Missouri, United States. [2] [3]
A carbon dioxide fire extinguisher rated for flammable liquids and gasses. Class B fires are those where the fuel is flammable or combustible liquid. The US system includes flammable gases in their "Class B". In the European/Australian system, flammable liquids are designated "Class B" having flash point less than 100 °C (212 °F).
Condensed aerosol fire suppression is a particle-based method of fire extinction. It is similar to but not identical to dry chemical fire extinction methods, using an innovative pyrogenic, condensed aerosol fire suppressant. It is a highly effective fire suppression method for class A, B, C, E and F (as is the case for most fire-extinguishing ...