Fire Hazards

3) FIRE HAZARDS

What is a fire hazard?

• Conditions that favor fire development or growth.

• Oxygen, fuel, and heat.

• Fire hazards usually involve the mishandling of fuel or heat.

• Fire or combustion is a chemical reaction between oxygen and a combustible fuel.

• Source of ignition = Spark, flame, and high temperature are needed.

Fire Triangle 

The fire triangle visually represents how these elements interact and depend on each other.

Types of Fires:

1. Class A Fires - Fabrics, clothes, wood, paper, and more.

2. Class B Fires - Spray paints, Liquid gas (Kerosene, Diesel, Petrol, etc.), Flammable gasses, Flammable liquids, and more.

3. Class C Fires - Loose wires, Electrical equipment, Electrical appliances, etc.

4. Class D Fires - Metals that are easily ignited or combustible. Examples of this are alkali metals (Sodium, Potassium, Uranium, Lithium, Plutonium and Calcium).

5. Class K / F Fires - Typically happens inside the commercial kitchen. Examples are : Grease, oils for cooking, etc.

Types of Fire Extinguishers:

1. Class A Fire Extinguishers - contains water for use against fires involving ordinary combustibles like paper, wood, cloth, and most plastics.
   

2. Class B Fire Extinguishers - uses dry chemicals to put out fires caused by gasoline, oil, and solvents.
   

3. Class C Fire Extinguishers - contains carbon dioxide for use against electrical fires.
   

4. Class D Fire Extinguishers - is designed specifically for fires involving combustible metals such as magnesium, sodium, titanium, and potassium.
   
   
   

5. Class K / F Fire Extinguishers - specifically designed for fires that involve cooking oils, fats, or grease, which are typically found in commercial kitchens.
   

Fire Detection Devices :

1. Smoke Detectors - require a flow of air in order to work well.

2. Heat Detectors - detect fires where there is no smoke activated by the significant increase in temperature associated with fire.

3. Flame Detectors - reacts to the movement of flames.