08/31/2026
🔥 KNOW THE BASICS OF FIRE
The air we breathe contains about 21% oxygen. But a fire doesn’t necessarily need the full 21% to keep burning—some materials can continue to burn at oxygen concentrations around 16% or even lower, depending on the fuel and conditions.
🔥 THE FIRE TETRAHEDRON
Fire requires four components:
• Heat — energy needed for ignition
• Fuel — something capable of burning
• Oxygen — supports combustion
• Chemical chain reaction — sustains the burning process
Remove any one of these, and combustion can be interrupted.