What are the four classes of fire and what do they burn?

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 are the four class of fires in the United States?

​CLASS A – Ordinary combustibles such as wood, cloth, and paper. CLASS B – Flammable liquids such as gasoline, oil, and oil-based paint. CLASS C – Energized electrical equipment, including wiring, fuse boxes, circuit breakers, machinery and appliances. CLASS D – Combustible metals such as magnesium or sodium.

What can cause a Class D fire?

Class D fires only involving combustible metals – magnesium, sodium (spills and in depth), potassium, sodium-potassium alloys uranium, and powdered aluminum.

What is a Class K fire?

The NFPA describes class K fires as those fires that involve combustible cooking materials such as vegetable oils that are used in cooking operations.

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

Carbon Dioxide – 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 could cause a Class D fire?

Use for Class D Fires. Class D fires only involving combustible metals – magnesium, sodium (spills and in depth), potassium, sodium-potassium alloys uranium, and powdered aluminum.

What causes Class K fire?

A Class K fire is fueled by flammable cooking liquids, such as cooking oil, and animal or vegetable-based greases. These liquids, when brought up to high temperatures, become volatile and can easily ignite. Due to their high flammability, they also spread rapidly.

What are the 4 classifications of fire?

Classes of 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. Class C: Electrical equipment, appliances and wiring in which the use or a nonconductive extinguishing agent prevents injury from electrical

What are the three types of fires?

March 5, 2018. In the world of prescribed burning, three types of fires are used; a “backfire,” “head fire,” and “flank fire,” and each type provides differing intensities for varying results.

What are Class K fires?

Class K fires are fires with substances such as the animal and vegetable fats present in commercial cooking oils and greases.

What are the four classes 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.