WebFeb 14, 2024 · Works For: Class A fires only The heat of the fire is removed by the water component, while the oxygen is removed by the foam. Class A extinguishers are rated based on their water equivalency. Each A is matched to 1 1/4 gallons of water. Examples of these ratings include 1-A, 2-A, 4-A, 6-A, 10-A. Class B Fire Extinguishers WebDue to the higher heating rates of vegetable oils in commercial cooking appliances, the NFPA Standard for Portable Fire Extinguishers (NFPA 10) includes a Class K extinguisher. These fire extinguishers work on the principle of saponification, which takes place when alkaline mixtures such as potassium acetate, potassium citrate or potassium ...
What Foam? The Principles And Practices Of Foam …
WebMar 26, 2024 · Class A fire extinguisher – water, water mist, foam, dry powder, wet chemical; Class B fire extinguisher – water mist, foam, dry … WebApr 1, 2024 · There are many different types of foam for firefighting: Class A foam is used for combustibles, structural fires and wildfires; Class B foam is used for ignitable liquids, … fisherfield clothing
Firefighting foam - Wikipedia
WebA.Class A foam is used for structural fires, but is not suitable for wildland fires. B.Class A foam is used to prevent ignition of fires involving flammable and combustible liquids. C.Class A foam reduces the surface tension of water, … WebJan 24, 2024 · The best types of fire extinguishers for class A fires are water and foam extinguishers. Water is the most popular type of extinguisher because it can handle most fires involving solids. But, as a … WebMar 15, 2011 · Classification of Fires Fires are classified in six groups A, B, C, D, F and electrical: Class A fires – are fires involving organic solids like paper, wood, etc Class B fires – are fires involving flammable liquids Class C fires – are fires involving flammable gasses Class D fires – are fires involving burning metals (eg aluminium swarf) canadian blood services surrey