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Portable Fire Extinguisher Safety OSHA 29 CFR 1910.157. By: Chaizong Lor, Safety Coordinator. Portable Fire Extinguisher Safety. Training Objectives: What is FIRE? The Fire Triangle Extinguishment Theory Types of portable fire extinguishers

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Portable Fire Extinguisher Safety OSHA 29 CFR 1910.157

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Portable Fire Extinguisher SafetyOSHA 29 CFR 1910.157

By: Chaizong Lor, Safety Coordinator

Portable Fire Extinguisher Safety

  • Training Objectives:

    • What is FIRE?

    • The Fire Triangle

    • Extinguishment Theory

    • Types of portable fire extinguishers

    • Major Causes of Fires

    • Reporting a Fire Emergency

    • Making the “right” decision

    • Quick-Check

    • How to use a portable fire extinguishers

  • A rapid chemical reaction know ascombustion which occurs when fuel and oxygen are brought together with sufficient heat to cause ignition.

The Fire Triangle

  • Any combustible material such as: solid, liquid, or gas. Most solids and liquids must vaporize before they will burn.

  • Sufficient oxygen must be present in the atmosphere surrounding the fuel for fire to burn.

Fire Triangle Cont.

  • Sufficient heat energy must be applied to raise the fuel to it’s ignition temperature

    • Open flameHot surfaces

    • Sparks and arcsFriction

  • This reaction can occur when all three of the above elements are present in the proper conditions & proportions

Extinguishment Theory

  • Three things must be present at the same time to produce fire:

    • Enough OXYGENto sustain combustion

    • EnoughHEATto reach ignition temperature

    • SomeFUELor combustible material

      • Together, they produce the CHEMICALREACTION that is fire

  • Take away any of these things and the fire will be extinguished





Types of portable fire extinguishers

  • Classification of Fire

    • Class A or Ordinary Combustibles

      • This includes fuels such as wood, paper, plastic, rubber, and cloth

    • Class B or Flammable and Combustible Liquids and Gases

      • This includes all hydrocarbon and alcohol based liquids and gases that will support combustion.

Types of portable fire extinguishers Cont.

  • Class C or Electrical

    • This includes all fires involving Energized electrical equipment

  • Class D or Combustible Metals

    • Examples of these types of metals are:

      • Zirconium

      • Titanium

      • Potassium

      • Magnesium

Types of portable fire extinguishers Cont.

  • Class K for fires that involves combustible or fats cooking oils in well insulated cooking appliances in commercial kitchens.

Major Causes of Fires

  • Carelessness with smoking & matches

  • Misuse of electricity (overloading a circuit or overuse of extension cords)

  • Improper rubbish disposal

  • Improper storage of flammables (such as gasoline)

  • Arson

Reporting a Fire Emergency

  • Activate fire alarm on the way out of building.

  • Notify Public Safety at 9-911. Give at least:

    • Your Name

    • Your Location

    • A description of the Emergency

    • A description of current condition

    • A description of any special hazards or needs, such as hazardous materials storage or non-ambulatory occupants

  • Stay on the line, unless told to do otherwise

  • Making That “Right” Decision

    • You are trained in the use of extinguishers.

    • You know what is burning.

    • Fire is not spreading rapidly.

    • Smoke and heat has not filled the area.

    • You have a clear path of escape.

    • Follow your instincts.


    • Is it Ready To Use?

    How to use of Fire Extinguisher

    • Use the P.A.S.S. Method

      • It is easy to remember how to use a fire extinguisher if you can remember the acronym PASS, which stands for Pull, Aim, Squeeze, and Sweep.

        • Pull the Pin.

        • The Pin: Some extinguishers require releasing a lock latch, pressing a puncture lever, or taking another first step.

        • This will allow you to operate the extinguisher.

    How to use of Fire Extinguisher Cont.

    • Aim at the base of the fire.

      Point the extinguisher nozzle (or hose) at the base of the fire.

    • Squeeze the lever above the handle. This discharges the extinguisher agent. Releasing the lever will stop the discharge.

    How to use of Fire Extinguisher Cont.

    • Sweep from side to side.

      Moving carefully toward the fire, keep the extinguisher aimed at the base of the fire and sweep back and forth until the flames appear to be out. Watch the fire area. If the fire re-ignites, repeat the process.

    Any Questions


    Please visit FM Website


    for additional information.

    Revision Dated: June 12th, 2012

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