- What is the most important element of fire?
- What are the 4 types of fire extinguishers?
- What are the 3 stages of a fire?
- What is the meaning of fire triangle?
- How does the fire triangle work?
- What is the best defense against fire?
- When all 3 elements of fire triangle combine what can occur?
- What are the stages of a fire?
- What are the 4 behaviors of fire?
- What is a level 4 fire?
- What are the 3 fuels for fire?
- What are 5 classes of fire?
- Why is the fire triangle important?
- How many classes of fire are there?
- What comes first fire or smoke?
What is the most important element of fire?
3 Things a Fire NeedsHeat.
Heat is the first and most essential element that a fire needs.
A fire can’t even start or spread unless there’s a significant amount of heat involved.
Fuel is the second element found in the fire triangle.
Oxygen is the last element in the fire triangle..
What are the 4 types of fire extinguishers?
There are four classes of fire extinguishers – A, B, C and D – and each class can put out a different type of fire. Multipurpose extinguishers can be used on different types of fires and will be labeled with more than one class, like A-B, B-C or A-B-C.
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 meaning of fire triangle?
Oxygen, heat, and fuel are frequently referred to as the “fire triangle.” Add in the fourth element, the chemical reaction, and you actually have a fire “tetrahedron.” The important thing to remember is: take any of these four things away, and you will not have a fire or the fire will be extinguished.
How does the fire triangle work?
The fire triangle, or combustion triangle, is the three components needed to ignite and sustain a fire. The three ingredients of a fire triangle are; heat, fuel and oxygen. If just one of these components is removed, the fire triangle will collapse and the fire will be extinguished.
What is the best defense against fire?
Clothing made of polyester (e.g.: lab coats) can melt on the skin when ignited. If possible, tear the clothing off the employee, throw it on the floor, cover it with a fire blanket and stomp on it to extinguish the flames.
When all 3 elements of fire triangle combine what can occur?
The Fire Triangle. Three things are required in proper combination before ignition and combustion can take place—Heat, Oxygen and Fuel. There must be Fuel to burn.
What are the stages of a fire?
By most standards including the International Fire Service Training Association (IFSTA) there are 4 stages of a fire. These stages are incipient, growth, fully developed, and decay. The following is a brief overview of each stage.
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.
What is a level 4 fire?
Weather and fuel conditions will lead to slow fire spread, low intensity and relatively easy control with light mop-up. There is little danger of spotting. Controlled burns can usually be executed with reasonable safety. VERY HIGH. 4.
What are the 3 fuels for fire?
The fire triangleoxygen.heat.fuel.
What are 5 classes of fire?
Fires can be classified in five different ways depending on the agent that fuels them: Class A, Class B, Class C, Class D, and Class K. Each type of fire involves different flammable materials and requires a special approach.
Why is the fire triangle important?
The fire triangle is a simple way of understanding the elements of fire. The sides of the triangle represent the interdependent ingredients needed for fire: heat, fuel and oxygen.
How many classes of fire are there?
four classesThere are four classes of fires: Class A: Ordinary solid combustibles such as paper, wood, cloth and some plastics. Class B: Flammable liquids such as alcohol, ether, oil, gasoline and grease, which are best extinguished by smothering.
What comes first fire or smoke?
Once they start burning, there is no smoke because the hydrocarbons are turned into carbon dioxide and water (both invisible) when they burn. This explains why you see no smoke from a charcoal fire (or a fire that has burned down to embers).