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 classes or types of fires?
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 are the 4 classes of fire?
Classes 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 are 3 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.
What types of materials fuel a Class A fire?
Class A: Usually the most common type of fire, as they are caused by combustible solid materials. This includes everyday materials such as paper, refuse, cardboard, wood, fabrics, and other flammable solid fuel sources.
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 class fire is electrical?
Class C fires involve energized electrical equipment. Extinguishers with a C rating are designed for use with fires involving energized electrical equipment.
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. These types of fires tend to spread rapidly and can result in injuries and massive building damage.
What are the fire types?
The 6 Types And Classes Of Fire And How To Attack Them
- Class A (Solids) Class A fires are fires involving solids. …
- Class B (Liquids) Class B fires are fires involving liquids. …
- Class C (Gases) Class C fires are fires involving gases. …
- Class D (Metals) …
- Electrical Fires. …
- Class F (Cooking Fats & Oils)
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 the most common class of fire?
Class A fires are the most common of the 5 different classes of fires. They occur when common combustible materials like wood, paper, fabric, trash, and light plastics catch fire.
How are fire classified?
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. … Most importantly, you’ll want to use the proper extinguisher when putting out a fire.
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.
What class of fire is acetylene?
Fires caused by combustion of gases such as methane, propane, hydrogen, acetylene, natural gas and city gas.