What are 5 classes of fire?
Fire is divided into five classes (A, B, C, D, and K) that are primarily based on the fuel that is burning. This classification system helps to assess hazards and determine the most effective type of extinguishing agent.
What is the highest class of fire?
class 1 fire
A class 1 fire rating is the best fire rating of materials that can be achieved. Class A fire ratings indicate a flame spread rating somewhere between zero and 25. Materials that fall into Class A or Class 1 include things like brick, gypsum wallboard, and fiber cement exterior materials.
What are the 4 classes of fire?
Classes of fire
- Class 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. (
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.
Why is there no Class E fire?
Electrical Fires This is not strictly a class (class E) of fire, because electricity is more or a source of ignition than a fuel. However, fires in live electrical equipment are an additional hazard.
What is Class D fire rating?
In order to be used in a building, an insulation product will usually need to pass British Standard tests regarding fire protection….A guide to the classifications.
| Classification | Definition | Description |
|---|---|---|
| B | Combustable | Limited contribution to fire |
| C | Minor contribution to fire | |
| D | Medium contribution to fire |
What are the 6 classes of fire?
Fires are classified in six groups A, B, C, D, F and electrical:
- Class A fires – are fires involving organic solids like paper, wood, etc.
- Class B fires – are fires involving flammable liquids.
- Class C fires – are fires involving flammable gasses.
- Class D fires – are fires involving burning metals (eg aluminium swarf)
What is a Class K extinguisher?
Class K fire extinguishers are more effective in extinguishing cooking fires. They use wet chemical agents with a greater firefighting and cooling effect for this type of hazard. The applicable National Fire Protection Association (NFPA) standard is NFPA 10 – Standard for Portable Fire Extinguishers.
What fire extinguisher used for Class E?
Carbon dioxide fire extinguishers
Use: Carbon dioxide fire extinguishers are ideal for environments at risk of electrical appliances (Class E) and also fires involving flammable liquids (Class B).
What is a Class D fire UK?
Class D – Metal fires Certain metals and powdered metals can burn if ignited, although it requires a lot of heat to ignite most metals, as they are good conductors and transfer heat away quickly to their surroundings.