Types of Fire Hazards

Hazards exist which can contribute to fire in the workplace.

Classification of Fires

There are specific classes of fire that relate to the source of the event, such as:

• Class A fires involve ordinary combustible materials, such as paper, wood, cloth, and some rubber and plastic materials.
• Class B fires involve flammable or combustible liquids, flammable gasses, greases, and similar material, along with some rubber and plastic materials.
• Class C fires involve energized electrical equipment where safety to the employee requires the use of electrically nonconductive extinguishing media.
• Class D fires involve combustible materials, such as magnesium, titanium, zirconium, sodium, lithium, and potassium.

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