Combustion or burning of substances combined chemically with oxygen from the air and typically giving off light and heat
Fire triangle
Oxygen is needed to sustain combustion
Fuel or combustible material is needed
Sufficient heat is needed to raise the material to its ignition temperature
Fire tetrahedron
Oxygen is needed to sustain combustion
Fuel or combustible material is needed
Sufficient heat is needed to raise the material to its ignition temperature
A chemicalchain reaction should take place in the material
Stages of fire
Ignition stage
Growth
Fully developed
Decay (burnout)
Fire continues until all of the available fuel is consumed, the fuel/oxygen is removed, the temperature is reduced by cooling, and the number of molecules is reduced and the chain reaction is broken
Classes of fire
Class A
Class B
Class C
Types of fire
Fire due to natural hazards
Fire due to human-made conditions
Fire due to mismanagement
The government agency responsible for responding to fire is the Bureau of Fire Protection (BFP)
Overheating of electrical wiring
Causes fire due to human-made conditions
Adding more fuel to the fire cannot stop a fire from happening
Using water can put off a fire
Adding more oxygen to the fire cannot stop a fire from happening
