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629 Planning for Workplace Emergencies
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How to Use a Fire Extinguisher

Even though extinguishers come in a number of shapes and sizes, they all operate in a similar manner. Here's an easy acronym for fire extinguisher use:

P A S S - Pull, Aim, Squeeze, Sweep
The PASS Method
  1. Pull the pin at the top of the extinguisher that keeps the handle from being accidentally pressed.
  2. Aim the nozzle toward the base of the fire.
  3. Squeeze the handle to discharge the extinguisher. Position yourself approximately 8 feet away from the fire. If you release the handle, the discharge will stop.
  4. Sweep the nozzle back and forth at the base of the fire. After the fire appears to be out, watch it carefully since it may re-ignite!

Make sure all employees who are expected to use fire extinguishers on controllable fires are properly trained with hands-on practice. There's no OSHA requirement to actually extinguish a fire or discharge a fire extinguisher during training. However, each employee should handle the fire extinguisher and demonstrate they can perform the PASS steps.

When using a portable fire extinguisher, follow these safe work practices and precautions:

  • Know the Fire Type: Ensure that the fire extinguisher is appropriate for the type of fire you're attempting to extinguish (e.g., Class A for ordinary combustibles, Class B for flammable liquids, Class C for electrical fires.
  • Ensure a Clear Exit: Always position yourself with an escape route behind you. If the fire grows or doesn't go out, evacuate immediately.
  • Check the Extinguisher: Before use, verify that the fire extinguisher is fully charged and not damaged. Regular maintenance ensures it is operational when needed.
  • Avoid Inhalation: The chemicals in extinguishers can be harmful if inhaled. Aim to minimize exposure by staying downwind of the fire.
  • Don't handle the nozzle: Holding the nozzle while using the extinguisher may cause severe burns.

Knowledge Check Choose the best answer for the question.

3-7. When using a fire extinguisher, be sure use the _____ method.