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A fire class is a system of categorizing fire with regard to the type of material and fuel for combustion.Class letters are often assigned to the different types of fire [1], but these differ between territories; there are separate standards for the United States (NFPA 10 Chapter 5.2.1-5.2.5), Europe (DIN EN2 Classification of fires (European Standard) ISO3941 Classification of fires ...
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]
The resulting chemical reaction can cause an explosion or a breakdown of the chemicals releasing toxic gases. Water should be used in that case. [8] [9] ABC dry chemical is inappropriate for certain metal fires and does not possess a saponification characteristic and should therefore not be used on Class K / Class F fires. [10]
A fire demonstrating Class A foam in a CAFS system. Class A foams were developed in the mid-1980s for fighting wildfires. Class A foams lower the surface tension of the water, which assists in the wetting and saturation of Class A foams with water. It penetrates and extinguishes embers at depth. This aids fire suppression and can prevent re ...
See Fire classes. Class C: An electrical fire. See Fire classes. Class D: A fire involving metals, such as sodium, titanium, magnesium, potassium, uranium, lithium, plutonium and calcium. See Fire classes. Class E (Europe/Australia): A composite Class A/Class B fire that is not also a Class C fire. Class F (Europe/Australia): See Class K.
Suitably qualified and experienced fire protection engineers may qualify for registration as a professional engineer. The recognition of fire protection engineering as a separate discipline varies from state to state in the United States. [24] NCEES recognizes Fire Protection Engineering as a separate discipline and offers a PE exam subject. [25]
Fire protection is the study and practice of mitigating the unwanted effects of potentially destructive fires. [1] [2] It involves the study of the behaviour, compartmentalisation, suppression and investigation of fire and its related emergencies, as well as the research and development, production, testing and application of mitigating systems.
A fire retardant is a substance that is used to slow down or stop the spread of fire or reduce its intensity. This is commonly accomplished by chemical reactions that reduce the flammability of fuels or delay their combustion. [1] [2] Fire retardants may also cool the fuel through physical action or endothermic chemical reactions.