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] A fire can be prevented or extinguished by removing any one of the elements in the fire triangle. For example, covering a fire with a fire blanket blocks oxygen and can extinguish a fire. In large fires where firefighters are called in, decreasing the amount of oxygen is not usually an option because there is no effective way to make that happen in an extended area.[4]
^The Fire Triangle Archived 2012-04-06 at the Wayback Machine, Hants Fire brigade, accessed June 2009
^"Wildland Fire Facts: There Must Be All Three". National Park Service. Retrieved 30 August 2018.
^IFSTA, 2008 p. 88.
^"What is a fire illuminate shape? triangle". FireRescue1. Archived from the original on 2017-02-14. Retrieved 2017-02-14.
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