Question: What Are The Four Stages Of A Fire?

What are the 3 stages of a fire?

Stages of fireIgnition: Fuel, oxygen and heat join together in a sustained chemical reaction.

Growth: With the initial flame as a heat source, additional fuel ignites.

Fully developed: Fire has spread over much if not all the available fuel; temperatures reach their peak, resulting in heat damage.More items….

What is the formula for fire?

The heat of the flame will keep remaining fuel at ignition temperature. The flame ignites gases being emitted, and the fire spreads. As long as there is enough fuel and oxygen, the fire keeps burning. Fuel + oxygen (from the air) = combustion products (mainly CO2 + H2O) + heat energy.

What is stage of fire?

Compartment fire development can be described as being comprised of four stages: incipient, growth, fully developed and decay (see Figure 1). Flashover is not a stage of development, but simply a rapid transition between the growth and fully developed stages.

Why is oxygen needed for fire?

Air contains about 21 percent oxygen, and most fires require at least 16 percent oxygen content to burn. Oxygen supports the chemical processes that occur during fire. When fuel burns, it reacts with oxygen from the surrounding air, releasing heat and generating combustion products (gases, smoke, embers, etc.).

What are the 5 stages of fire?

These stages are incipient, growth, fully developed, and decay. The following is a brief overview of each stage.

What is the second stage of a fire?

As we move through the phases of a fire, we come to the second stage – growth. The growth of a fire will be affected by the structure of the building and the fuel available.

How do you start a fire?

How to Start a FireIntroduction: How to Start a Fire. … Step 1: Clear a Circular Space on the Ground. … Step 2: Line the Circular Space With Large Rocks. … Step 3: Place the Small Sticks and Twigs in the Circular Space As a Platform. … Step 4: Place Dry Grass, and Leaves on the Kindling. … Step 5: Light the Fire With a Lighter or Matches.More items…

What is a flame of fire?

A flame (from Latin flamma) is the visible, gaseous part of a fire. It is caused by a highly exothermic reaction taking place in a thin zone. Very hot flames are hot enough to have ionized gaseous components of sufficient density to be considered plasma.

What are the 4 behaviors of fire?

Fire behavior includes such things as how fast a fire burns (rate of spread), how hot it burns (fire intensity), the presence of fire whirls, and ember production and spotting.