What three elements must coexist to generate fire?

To generate fire, three essential elements must coexist: fuel, heat, and oxygen. Fuel serves as the combustible material that can burn, while heat provides the necessary energy to initiate the combustion process. Oxygen is critical because it is a reactant in the chemical reaction of combustion. Without any one of these elements, fire cannot occur.

For example, removing the oxygen source will suffocate the fire, even if there is ample fuel and heat present. This is why in fire prevention, controlling access to oxygen, such as in confined areas, helps to minimize fire risks. Understanding this triad is fundamental in both fire safety and in the context of weapon systems, as it pertains to their operation and maintenance.