What do you mean by 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.

What is the fire triangle and how do we use it?

The fire triangle is used to show the three elements that when present together can cause a fire to start. These three ingredients are fuel, heat and oxygen, under all circumstances they should be kept apart to avoid a fire starting.

What are the 4 types of fire?

Class A. A class A fire is burning flammable solids as fuel. …
Class B. Class B fires are burning flammable liquids. …
Class C. Class C fires burn flammable gases. …
Class D. Class D fires are burning flammable metals. …
Electrical. Any fire involving electrical equipment is classed as an electrical fire. …
Class F.

What is fire triangle essay?

The fire triangle is composed of three legs: appropriate fuel, adequate oxygen, and enough heat. Fuel or the material that burns, is required for combustion because it generates the combustion products. Heat or pilot source heat sustains combustion and allows it to continue.

How does the fire triangle help you control fire?

How does the fire triangle help you control fire? it shows you that removing any one of the three needed for fire allows you to prevent a fire. … removing trees interrupts the supply of fuel needed for the fire.

What are Class B and C fires?

Class B fires which involve flammable liquids and gases, solvents, oils, greases (excluding cooking oils/greases in depth) tars, oil-based paints and lacquers. Class C fires which involve energized electrical equipment. What is the proper way to use a Class BC, CO2 fire extinguisher?

What is fire triangle and fire tetrahedron?

What Is the Fire Tetrahedron? The Triangle of Combustion symbolised the concept of fire for a long time and represented heat, fuel, and oxygen. … All the four sides of the fire tetrahedron symbolise the Heat, Oxygen, Fuel, and Chemical Chain Reaction.

What are the 7 sides of a fire?

Command must consider the seven sides (or sectors) of the fire: front, rear, both sides, top, bottom, and interior. Fires cannot be considered under control until all seven sides are addressed. Failure to address all seven sides will frequently result in fire extension.

What is fire made of?

Flames consist primarily of carbon dioxide, water vapor, oxygen and nitrogen. If hot enough, the gases may become ionized to produce plasma. Depending on the substances alight, and any impurities outside, the color of the flame and the fire’s intensity will be different.

What is convection of fire?

It is the type of heat one feels when sitting in front of a fireplace or around a campfire. … Convection is the transfer of heat by the physical movement of hot masses of air. As air is heated, it expands (as do all objects). As it expands, it becomes lighter then the surrounding air and it rises.

Article first time published on

What is AK type fire extinguisher?

A Class K fire extinguisher is used on fires involving cooking media (fats, grease, and oils) in commercial cooking sites such as restaurants. These fire extinguishers work on the principle of saponification. … These extinguishers are identified by the letter K.

How do you break a fire triangle?

Reducing heat on wildfires may be accomplished in two ways: cooling with water, foam, dirt, or scattering the available fuels to reduce the effect of radiant heat. Water or dirt should be directly applied on the fuels being consumed to reduce fuel temperature.

When all 3 elements of fire triangle combine what can occur?

Combustion can take place when 3 factors or elements are present: Fuel, Heat and Oxygen.

Why do we put these three words together in the fire triangle?

The fire triangle is used to show the rule that a fire needs three things to burn. These things are heat, fuel, and oxygen. If one of these three is removed, the fire will be put out. In the middle of the fire triangle there is also a chemical reaction.

What is the brush fire triangle?

There are three components needed to start a fire: fuel, oxygen, and heat. This is commonly referred to as the fire triangle. If any one of the components is missing, a fire cannot occur.

What is CO2 extinguisher?

CO2 fire extinguishers contain pure carbon dioxide which is a clean extinguishant, leaving no residue. Suitable for class B flammable liquid fires (petrol, oil, solvents), and recommended for use on live electrical equipment.

What is a Class F fire?

Class F Fire Class F fires are fuelled by cooking fats or oils e.g. in a kitchen setting. The appropriate extinguisher used to tackle a class F fire is a ‘wet chemical’ extinguisher.

What is water fire extinguisher?

Water fire extinguishers are used to extinguish class A fires, or in other words fires involving flammable solids such as paper, wood, and textile materials. … Water is a conductor of electricity, and as such it could cause extreme damage if a water fire extinguisher is used.

What are 3 types of fires?

Class A Fires. involve common combustibles such as wood, paper, cloth, rubber, trash and plastics.
Class B Fires. involve flammable liquids, solvents, oil, gasoline, paints, lacquers and other oil-based products.
Class C Fires. …
Class D Fires. …
Class K Fires.

What is fire formula?

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.

How is fire hot?

Fire is hot because thermal energy (heat) is released when chemical bonds are broken and formed during a combustion reaction. Combustion turns fuel and oxygen into carbon dioxide and water. … Both light and heat are released as energy. Flames are visible evidence of this energy.

What is the alpha side?

Alpha, Bravo, Charlie, Delta – these terms are used to designate the sides of a structure. The “alpha” side is the front of the structure, the “bravo” side is the left side of the structure, “charlie” is the back of the structure and “delta” is the right side of the structure.

Why is a firefighter called a Jake?

New England affectionate slang for Firefighter. … Being a “Good J-Key” probably meant a fireman who was cool under the pressure and could send clear Morse code. “J-Key” was eventually shortened to “Jake”, and when spread to the public, “Jake” came to be a common term for firemen in general.

What does fire knockdown mean?

Knocked down – means the main body of the fire has been suppressed. … Laying an inch and three quarter line – means that an fire company has pulled a 1 3/4“ hose (handline) and will be engaged in fire suppression activities.

How is oxygen removed from a fire?

Removal of oxygen from the area around a fire can be achieved with a carbon dioxide extinguisher or a fire blanket. The carbon dioxide extinguisher pushes oxygen away from the fire and replaces it with carbon dioxide, which is inflammable and more dense than air.

Why does paper burn on fire?

By connecting many sugar molecules together into a long chain, the plant produces cellulose. That is what wood is made of. … Although it looks different, it is still made of cellulose, so it still contains the trapped energy. Burning the paper releases the energy, just as it does when you burn a piece of wood.

What are the 4 types of fire extinguishers?

Understanding fire extinguisher classes 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 extinguisher is Class C?

The only extinguisher which is safe to use on a Class C fire is a dry powder extinguisher. It works by cooling the flames until there is no longer enough heat to keep them burning. But using any other type of extinguisher will instead just spread the fuel and flames.

What is a metal fire?

Generally, metal fires are a hazard when the metal is in the form of sawdust, machine shavings or other metal “fines”, which combust more rapidly than larger blocks due to their increased surface area. Metal fires can be ignited by the same ignition sources that would start other common fires.

Which one is a Class B fire?

In fire classes, a Class B fire is a fire in flammable liquids or flammable gases, petroleum greases, tars, oils, oil-based paints, solvents, lacquers, or alcohols. For example, propane, natural gas, gasoline and kerosene fires are types of Class B fires.