Conclusion. Fires burn in four stages: the ignition stage, the growth stage, the full development stage, and finally, the end of the fire or the decay stage. How long it takes for a fire to transition from one stage to another depends on the availability of flammable materials.
The 4 Stages of Fire: Explained by a Firefighter
Stages of fire. Ignition: Fuel, oxygen and heat join together in a sustained chemical reaction. At this stage, a fire extinguisher can control the fire. Growth: With the initial flame as a heat source, additional fuel ignites. Convection and …
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How do you extinguish a Class A fire?
Class A: Ordinary combustible materials, such as wood, cloth, paper, rubber and many plastics. They burn with an ember and leave an ash. Extinguish by cooling the fuel to a temperature that is below the ignition temp. Water and other extinguishing agents are effective.
How does a fire extinguisher control the fire?
At this stage, a fire extinguisher can control the fire. Growth: With the initial flame as a heat source, additional fuel ignites. Convection and radiation ignite more surfaces. The size of the fire increases and the plume reaches the ceiling.
Which of the following is the first stage of fire?
Incipient –Incipient is known as the first stage of fire. As the fire triangle elements like oxygen, fuel and spark/heat combine with each other and continuous chemical reaction resulting is breaking out of fire.
What is the most dangerous stage of a fire?
While the fire’s intensity is most likely only going to decline from here (unless it gets a new fuel source, wind conditions change, etc.), this does remain the most dangerous moment in a fire’s life. It is at its hottest and most ferocious point. During the fully developed stage, people should steer well clear of the fire.
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S02 4 FLS Stages Fire Extinguishers Video Answer
Reference:
https://www.usfa.fema.gov/
https://en.wikipedia.org/wiki/Fire_extinguisher