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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". [3] In the European/Australian system, flammable liquids are designated "Class B" having flash point less than 100 °C (212 °F). [4]
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 ...
A flammable liquid is a liquid which can be easily ignited in air at ambient temperatures, i.e. it has a flash point at or below nominal threshold temperatures defined by a number of national and international standards organisations.
In other words, if a portion of a building were designed as an apartment, one could not suddenly load it with flammable liquids and turn it into a gas storage facility, because the fire load and smoke development in that one apartment would be so immense as to overtax the active fire protection as well as the passive fire protection means for ...
Class B foams are designed for class B fires—flammable liquids. The use of class A foam on a class B fire may yield unexpected results, as class A foams are not designed to contain the explosive vapours produced by flammable liquids. Class B foams have two major subtypes.
Class A Fires that involve flammable liquids or liquefiable solids such as petrol/gasoline, oil, paint, some waxes & plastics, but not cooking fats or oils Class B: Class B: Class B: Fires that involve flammable gases, such as natural gas, hydrogen, propane, butane: Class C Class C Fires that involve combustible metals, such as sodium ...
Class 3: Flammable Liquids A flammable liquid is a liquid having a flash point of not more than 60 °C (140 °F), or any material in a liquid phase with a flash point at or above 37.8 °C (100 °F) that is intentionally heated and offered for transportation or transported at or above its flash point in a bulk packaging. The following exceptions ...
Class B fires involve flammable or combustible liquids, including petrol, grease, and oil. Class C fires involve flammable gases. Class D fires involve combustible metals. Class E fires involve electrical equipment/appliances. Class F fires involve cooking fat and oil. Class E has been discontinued, but covered fires involving electrical ...
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