Fire Extinguisher Basics (PASS) – A Safety Toolbox Talk for Every Workplace

October 7, 2026

Fire can start in seconds and spread in minutes. Knowing how to use a fire extinguisher correctly can prevent injuries, protect property, and sometimes save lives. The PASS method is a simple, proven technique that helps workers remember exactly what to do when it is safe to use a portable fire extinguisher. This safety toolbox talk explains when to use an extinguisher, how to use it with the PASS method, and key best practices for workplace fire safety.

Understanding when to use a fire extinguisher

Fire extinguishers are powerful safety tools, but they must be used correctly and only in appropriate situations. Using an extinguisher at the wrong time can increase risk rather than reduce it. Before you reach for an extinguisher, use this quick checklist:

The fire is small and contained (for example, a small wastebasket or localized equipment fire).
You have a clear escape path behind you that is not blocked by fire, smoke, or equipment.
You know what is burning and have the correct type of fire extinguisher.
The fire department has been called or an alarm has been activated.
You feel confident that you can operate the extinguisher safely.

If any of these conditions are not met, do not attempt to fight the fire. Instead, activate the nearest alarm, evacuate immediately, and follow your workplace emergency procedures.

Know your fire extinguisher class before you use PASS

Not every fire extinguisher works on every type of fire. Using the wrong extinguisher can make a fire worse and put you at greater risk. Common classes of fires and matching extinguisher types include:

Class A: Ordinary combustibles – wood, paper, cloth, trash, many plastics
Class B: Flammable liquids and gases – gasoline, oils, paints, solvents
Class C: Energized electrical equipment – panels, tools, wiring, appliances
Class D: Combustible metals – magnesium, titanium, sodium (specialized operations)
Class K: Cooking oils and fats – commercial kitchens, fryers, grills

Most general workplace extinguishers are rated for multiple classes, such as ABC. Always check the label on the extinguisher before use. Never use a water-only extinguisher on flammable liquids, electrical fires, or cooking oil fires.

Many employees overestimate their ability to fight a fire. According to the U.S. Fire Administration, nonresidential building fires in the U.S. caused an estimated 115 deaths, 1,025 injuries, and $3.4 billion in direct property damage in 2021. These figures highlight why the first priority is always life safety and timely evacuation, not firefighting. Source

What the PASS method stands for

The PASS method is a simple four-step process for using a portable fire extinguisher:

Pull
Aim
Squeeze
Sweep

Memorizing PASS ensures that, under stress, you can still remember the correct sequence of actions. Each step is important for safe and effective use of fire extinguishers in the workplace.

P – Pull the pin

The first step is to pull the pin at the top of the extinguisher. This pin locks the handle to prevent accidental discharge. To pull it safely:

Hold the extinguisher upright with one hand on the carrying handle.
Use your other hand to pull the pin straight out.
If the pin is difficult to remove due to a tamper seal, twist it gently while pulling.

Once the pin is removed, the extinguisher is ready to operate. Do not place your hand over the nozzle or horn. At this point, you should be standing at a safe distance from the fire, with your back toward the exit.

A – Aim at the base of the fire

Next, aim the nozzle, hose, or horn at the base of the flames, not at the top of the fire. Fires burn at the fuel source. If you spray only at the flames, the fire will likely continue to burn.

Stand about 6 to 8 feet from the fire, or as directed on the extinguisher label.
Point the nozzle low, toward the base where the fuel is located.
Maintain your position so that the exit remains behind you at all times.

Aiming correctly is critical for fire extinguisher effectiveness. If you aim too high, the extinguishing agent will pass through the flames without smothering the fuel.

S – Squeeze the handle

Once you are aimed at the base of the fire, squeeze the handle or lever slowly and steadily to discharge the extinguishing agent.

Use a firm, even pressure while keeping control of the extinguisher.
Be prepared for a slight kick or reaction, depending on the type and size of the extinguisher.
Do not pump the handle repeatedly; most extinguishers are designed for continuous discharge while the handle is squeezed.

Most portable fire extinguishers discharge completely in 10 to 20 seconds, depending on size and type. That means you must use that limited time carefully, staying focused on the base of the fire and adjusting your aim as needed.

S – Sweep from side to side

While continuing to squeeze the handle, sweep the nozzle slowly from side to side across the base of the fire.

Move the stream in a controlled, overlapping motion, covering the entire area of the burning material.
Watch closely for any remaining hot spots or areas where flames persist.
If the fire starts to spread or grow beyond the small area you can safely cover, stop, evacuate immediately, and close doors behind you if possible.

Even if the flames appear to be out, keep watching the area for several seconds to ensure the fire does not reignite. If it does, repeat the PASS steps if it is still safe to do so and you have extinguishing agent remaining.

Safety best practices when using PASS

Using the PASS method is only one component of safe fire extinguisher use. Additional best practices for workplace fire safety include:

Always sound the alarm or call emergency services before attempting to fight a fire.
Keep your exit route clear and never let the fire come between you and the exit.
Stay low if smoke is present; smoke inhalation can be deadly in a short time.
Never turn your back on a fire; back away slowly once it appears to be out.
Do not re-enter an area where a fire has occurred until authorized by emergency responders.
Report any used or partially discharged extinguisher immediately so it can be replaced or recharged.
Participate in regular fire safety training and hands-on extinguisher drills provided by your organization.

The National Fire Protection Association (NFPA) recommends that fire extinguishers be inspected monthly and maintained annually by qualified personnel. Regular inspections help ensure that extinguishers are charged, accessible, and ready for use in an emergency. Source

Integrating PASS into your safety culture

A strong safety culture treats fire extinguishers as part of an overall fire safety program, not a stand-alone solution. Incorporate PASS training into:

New employee onboarding
Annual safety refresher training
Toolbox talks and safety meetings
Emergency response drills
Job-specific hazard awareness sessions

Repetition helps employees remember PASS under stress. Posting clear fire safety procedures near extinguishers and in common areas reinforces training and encourages consistent, safe behavior in the event of a fire.