What is the correct order of steps for using a portable fire extinguisher?

The correct order for using a portable fire extinguisher is essential for effectively extinguishing a fire. The rationale behind this sequence begins with pulling the pin, which is a necessary action to remove the safety mechanism that prevents accidental discharge.

Next, aiming at the base of the fire is crucial because this is where the fire's fuel source is located. Targeting the base rather than the flames ensures that the extinguishing agent effectively disrupts the chemical reaction that sustains the fire.

After properly aiming, squeezing the trigger activates the extinguisher, allowing the discharge of the fire-fighting agent toward the base of the fire. Finally, the sweeping side-to-side motion helps to cover a larger area and ensure that the extinguishing agent spreads effectively over the fire, increasing the chances of putting it out completely.

This sequence is designed to provide maximum effectiveness in a fire emergency and ensures safety for the person using the extinguisher.