How Do You Use a Fire Extinguisher Sweep?

The "sweep" is the final crucial action when operating a fire extinguisher to effectively put out a fire. It's the fourth step in the standard operating procedure.

Using a fire extinguisher effectively typically follows four key steps, often remembered by the acronym P.A.S.S.:

1. Pull the pin. This breaks the tamper seal and allows you to discharge the extinguishing agent.
2. Aim at the base of the fire. Direct the nozzle or horn towards the fuel source, not at the flames themselves.
3. Squeeze the top handle or lever. This releases the extinguishing agent.
4. Sweep from side to side until the fire is completely out.

Understanding the Sweep

The sweep action (Step 4) is performed while you continue to aim the extinguisher at the base of the fire (Step 2) and keep the handle squeezed (Step 3).

Here's a breakdown of how to perform the sweep:

• Motion: Move the nozzle or horn of the extinguisher back and forth, covering the entire area at the base of the fire.
• Target: Maintain your aim at the lowest point of the flames, where the fire is feeding on the fuel.
• Duration: Continue sweeping until all visible flames are extinguished. If the fire re-ignites, repeat the process if it is safe to do so and you have sufficient agent remaining.

This sweeping motion ensures that the extinguishing agent (like dry chemical, foam, or CO2) covers the fuel source thoroughly, smothering the fire or interrupting the chemical reaction needed for combustion.

The Complete Fire Extinguisher Operation (P.A.S.S.)

To put it all together, here's how to use a fire extinguisher according to the reference and standard practice:

By following these steps, including the critical sweep motion, you maximize the extinguisher's effectiveness in controlling or extinguishing a small fire. Remember to always ensure you have a safe escape path and only attempt to fight a fire if it is small, contained, and the air is breathable.