The Fire Triangle
A fire requires three essential components: heat, fuel, and oxygen. The interaction of these three elements is often represented by the “fire triangle”.
- Fuel: Any combustible material that can ignite and sustain a fire. Fuel serves as the source of ignition and keeps the fire burning.
- Oxygen: An oxidizing agent that reacts with fuel to initiate and maintain combustion. Lower oxygen levels slow down the burning process.
- Heat: Fires require sufficient heat to raise the fuel to its flashpoint, the minimum temperature at which it can ignite. Different materials and chemicals have varying flashpoints—lower flashpoint substances ignite more easily, while higher flashpoint substances require more heat to catch fire.
Understanding the fire triangle is critical for both preventing and controlling fires in any environment.