What is the correct sequence to operate a portable fire extinguisher?

What is the correct sequence to operate a portable fire extinguisher?

• A. Squeeze trigger; Remove Pin; Hold discharge horn; Sweep discharge nozzle.
• B. Hold discharge horn; Squeeze trigger; Remove Pin; Sweep discharge nozzle.
• C. Remove Pin; Hold discharge horn; Squeeze trigger; Sweep discharge nozzle from side to side.
• D. Sweep discharge nozzle from side to side; Remove Pin; Squeeze trigger; Hold discharge horn.

Answer: (C)

To use a portable fire extinguisher effectively, you must follow a specific order that lets you control the release, target the fuel, and blanket the fire. First, remove the safety pin to unlock the operating lever so the extinguisher can discharge. Next, hold the discharge horn and aim at the base of the fire—the part where the fuel is burning—to hit the source of the flames rather than the tops or the surrounding air. Then squeeze the trigger to release the extinguishing agent. Finally, sweep the nozzle from side to side across the base of the fire to spread the agent and ensure all the fuel is covered, stopping only when the fire is out or you must retreat to safety. This sequence ensures you can control the discharge, direct it accurately, and steadily apply the agent to prevent reignition. If you try to discharge before removing the pin, or sweep before releasing the agent, you won’t effectively suppress the fire.

To use a portable fire extinguisher effectively, you must follow a specific order that lets you control the release, target the fuel, and blanket the fire. First, remove the safety pin to unlock the operating lever so the extinguisher can discharge. Next, hold the discharge horn and aim at the base of the fire—the part where the fuel is burning—to hit the source of the flames rather than the tops or the surrounding air. Then squeeze the trigger to release the extinguishing agent. Finally, sweep the nozzle from side to side across the base of the fire to spread the agent and ensure all the fuel is covered, stopping only when the fire is out or you must retreat to safety.

This sequence ensures you can control the discharge, direct it accurately, and steadily apply the agent to prevent reignition. If you try to discharge before removing the pin, or sweep before releasing the agent, you won’t effectively suppress the fire.