Question: What Is The Difference Between Class B And Class K Fires?

Can milk put out a fire?

Milk and Grease Fires Some experts say milk also can cause a fireball or explosion when put on a grease fire.

The only way milk can put out a grease fire is if such a vast quantity of milk is used that it completely submerges the fire, causing the fire to run out of oxygen.

This is usually not practical or efficient..

What extinguishing materials are used for Class B and C fires?

Carbon Dioxide fire extinguishers extinguish fire by taking away the oxygen element of the fire triangle and also be removing the heat with a very cold discharge. Carbon dioxide can be used on Class B & C fires.

What is the best way to extinguish a Class C fire?

The most important thing to remember is that a class C fire cannot be fought with water; you must use non-conductive substances. Carbon dioxide fire extinguishers, and those loaded with a dry chemical like PKP, are effective. Conductive substances such as water or foam can put the fire fighter at risk.

What are Class A fires?

There 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 are the 5 different classes of fire?

Classes of fireClass A – fires involving solid materials such as wood, paper or textiles.Class B – fires involving flammable liquids such as petrol, diesel or oils.Class C – fires involving gases.Class D – fires involving metals.Class E – fires involving live electrical apparatus. (More items…

What is Class C fire?

Class C fires are fires involving energized electical equipment such as computers, servers, motors, transformers, and appliances. Remove the power and the Class C fire becomes one of the other classes of fire.

What are 3 elements of fire?

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.

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.

What are the ABC’s of fire extinguishers?

This pale, yellow powder can put out all three classes of fire: Class A is for trash, wood, and paper. Class B is for liquids and gases. Class C is for energized electrical sources.

What are the five main principles of fire?

Fire Extinguishment PrinciplesCooling of Flame.Reduction of Flame by cooling of the liquid; dilution of the liquid; or blanketing of the liquid.Reduction of oxygen.Interference with Combustion Reaction.

What is an example of a Class D fire?

What is a Class D fire? A Class D fire is characterised by the presence of burning metals. Only certain metals are flammable and examples of combustible metals include sodium, potassium, uranium, lithium, plutonium and calcium, with the most common Class D fires involve magnesium and titanium.

What are the 6 classes of fire?

Fires are broken up into six different classes:Class A – solids, such as paper, textiles, wood, plastics and rubber.Class B – flammable liquids, such as petrol, oil and paint.Class C – flammable gases, such as propane, butane and methane.Class D – metals, such as aluminium, magnesium and titanium.More items…•

What is a Class B fire extinguisher?

“B” LIQUIDS Fire extinguishers with a Class B rating are effective against flammable liquid fires. These can be fires where cooking liquids, oil, gasoline, kerosene, or paint have become ignited. Two commonly used chemicals are effective in fighting these types of fires.

Which type of extinguisher is intended to be used on a Class B fire?

CO2: A carbon dioxide fire extinguisher works on a Class B fire by expelling CO2 to suffocate the fire, removing the oxygen necessary to keep it burning. It also helps with removing the heat, as the discharge is very cold.

What are the 4 stages 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.

Where should a Class B fire extinguisher be placed?

1. Where should fire extinguishers be located?Class A: Locations that contain ordinary combustible materials, including offices, classrooms, and assembly halls.Class B: Workshops, storage areas, garages, warehouses, or service and manufacturing areas that contain flammable liquids or gasses.More items…•

Which is an example of a Class C fire?

A Class C fire is the burning of flammable gases, which can be very dangerous and highly explosive. These include gases such as butane and propane in gas canisters, which you’d expect to find in certain building trades. You will also find these with gas camping stoves and gas barbeques.

What is the triangle for fire?

The fire triangle or combustion triangle is a simple model for understanding the necessary ingredients for most fires. The triangle illustrates the three elements a fire needs to ignite: heat, fuel, and an oxidizing agent (usually oxygen).

What type of fire is class K?

Fire typesDescriptionEurope (European Standard EN 2)United StatesFlammable gasesClass CClass BFlammable metalsClass DClass DElectrical fireNot classified (formerly Class E)Class CCooking oils and fatsClass FClass K2 more rows

How do you extinguish a Class B fire?

To extinguish a Class B fire, you want to cut off the oxygen. You can use carbon dioxide gas to dilute the oxygen available and stop the burning. Smothering the fire with bicarbonate (baking soda) or potassium carbonate will also work.