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100 Safety Topics Book

 100 Safety Topics Book

100 Safety Topics Book



WHAT IS FIRE

Fire, is the process of rapid oxidation at high temperatures. This releases hot gases,light, and invisible forms of radiation energy.
· Most people use the words fire and combustion interchangeably. Fire is a by-product of a rapid combustion reaction.
· Combustion is defined as the self-sustaining process of rapid oxidation of a combustible material (fuel), producing heat and light.
· Oxidation is the process of oxygen chemically combining with another material.

The triangle illustrates the rule that in order to ignite and burn, a fire requires three elements: heat, fuel, and an oxidizing agent, usually oxygen. The fire is prevented or extinguished by removing any one of them. A fire naturally occurs when the elements are combined in the right mixture.

For many years the concept of fire was symbolized by the Triangle of Combustion and represented, fuel, heat, and oxygen. Further fire research determined that a fourth element, a chemical chain reaction, was a necessary component of fire. The fire triangle was changed to a fire tetrahedron to reflect this fourth element.

 A tetrahedron can be described as a pyramid which is a solid having four plane faces.Essentially all four elements must be present for fire to occur, fuel, heat, oxygen, and a chemical chain reaction. Removal of any one of these essential elements will result in the fire being extinguished.


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