General Information

Fire extinguishers are excellent for putting out fires and reducing damage if they are used properly by trained users.

Classes of Fires

  • Class A fires involve combustible solids such as wood or paper as fuel
  • Class B fires involve flammable liquids such as gasoline as fuel
  • Class C fires ignite from energized electrical equipment such as faulty wiring or fuse box
  • Class D fires involve combustible metals like titanium or potassium as fuel
  • Class K fires involve grease or oil as fuel and typically occur in kitchens

Types of Extinguishers

  • ABC extinguishers are the most common type and are used on class A, B, and C fires
  • Carbon dioxide (CO2) extinguishers are used on class B and C fires
  • Wet Chemical extinguishers are usually found in commercial kitchens and are used on class K fires to create a barrier between the fuel and air

Safe Extinguisher Use

  • Extinguishers should only be used if:
    • user is not in danger
    • user has been trained
    • 911 has been called
    • fire alarm is pulled
  • user has an exit route
    • fire is small
    • Use the correct extinguisher for the class of fire present

Use the P. A. S. S. method

  • Pull the pin
  • Aim the nozzle at the base of the fire
  • Squeeze the handle
  • Sweep from side to side

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