Knowing how to use a fire extinguisher is an essential life skill, but it’s equally important to understand when not to use one. In certain situations, attempting to use a fire extinguisher can put you at greater risk and waste valuable time that could be spent evacuating. Recognizing these moments is critical for personal safety and can prevent fires from escalating.
In this article, we’ll explore the scenarios when using a fire extinguisher is not appropriate and explain why immediate evacuation should be your first course of action.
1. When the Fire Is Too Large or Out of Control
Fire extinguishers are designed for small, contained fires that can be quickly managed. If a fire has grown larger than a small trash can or is spreading rapidly, it’s too dangerous to try to extinguish it yourself. In these cases, the extinguisher may not be effective, and attempting to put out the fire can expose you to flames and smoke. Fires double in size every 30 seconds, so a small blaze can escalate quickly, leaving you with little time to react.
If you notice that the fire is growing despite your efforts or covers a substantial area, it’s best to evacuate immediately and call emergency services. The professionals have the tools and training needed to manage large fires safely.
2. When You Don’t Know What’s Burning
Certain materials require specific types of fire extinguishers, and using the wrong type can make the fire worse or even put you in harm’s way. For example:
- Electrical fires (Class C): Water-based extinguishers can cause electrocution if used on live electrical equipment.
- Flammable liquids (Class B): Water can cause flammable liquid fires to spread rather than putting them out.
- Metal fires (Class D): Only specific extinguishing agents can safely put out metal fires, common in industrial environments.
If you don’t know what’s burning or suspect the fire involves chemicals, flammable liquids, or electrical equipment, evacuate and leave it to the fire department. They’ll have the proper equipment and knowledge to safely manage specialized fires.
3. If You Haven’t Been Trained on How to Use a Fire Extinguisher
Using a fire extinguisher may seem straightforward, but under pressure, it’s easy to make mistakes if you’re unfamiliar with the process. If you’ve never used an extinguisher before, attempting to do so for the first time in an emergency can lead to panic, improper handling, and wasted time. Without training, you may not know how to assess whether the extinguisher is appropriate for the fire or how to use it effectively.
The PASS technique—Pull, Aim, Squeeze, and Sweep—is easy to remember but only if practiced beforehand. If you don’t feel confident or comfortable using a fire extinguisher, prioritize evacuation over attempting to put out the fire yourself.
4. When the Room Is Filled with Smoke
Smoke is often more dangerous than the fire itself, as it can quickly obscure visibility, disorient you, and cause respiratory issues. Smoke inhalation is one of the leading causes of injury and death in fires, as it can quickly lead to unconsciousness.
If a room is filling with smoke, don’t waste time trying to locate or use an extinguisher—leave immediately. Close doors behind you as you exit to help contain the fire and smoke. Staying low to the ground where the air is clearer can also help you escape safely. Once outside, call emergency services to handle the situation.
5. If You Don’t Have a Clear Escape Route
Before attempting to use a fire extinguisher, ensure you have a clear, unobstructed exit route behind you. If the fire blocks your path to an exit, using an extinguisher could trap you inside with no means of escape if the fire spreads.
Position yourself with the fire in front of you and the exit behind you, so you can leave quickly if the fire becomes uncontrollable. If you can’t maintain a safe distance with a clear escape route, it’s best to leave immediately.
6. If the Fire Extinguisher Is Not the Right Type
Fire extinguishers come in different types, each designed to combat specific fire classes:
- Class A: For ordinary combustibles like wood, paper, and fabric.
- Class B: For flammable liquids such as gasoline, oil, and grease.
- Class C: For electrical equipment.
- Class D: For combustible metals.
- Class K: For cooking oils and fats in kitchens.
Using the wrong extinguisher can lead to dangerous outcomes. For instance, using a water-based extinguisher on a grease or electrical fire can make it worse and put you in immediate danger. Familiarize yourself with the type of extinguishers available in your environment and ensure they match the possible fire hazards in the area. If the extinguisher type does not match the fire, evacuate and call for professional help.
7. When Multiple People Need to Be Notified or Evacuated
In workplaces, public buildings, or multi-story residences, alerting others to evacuate should take precedence over attempting to fight a fire alone. Some fires can spread incredibly fast, and taking even a few seconds to alert others can save lives.
Instead of trying to tackle the fire on your own, pull the nearest fire alarm or alert everyone verbally. As people are evacuating, call emergency services and inform them about the fire’s location and any details you observed.
8. If the Fire Extinguisher Has Been Previously Discharged
A fire extinguisher that has been partially discharged may not have enough pressure or extinguishing agent to put out another fire effectively. Using a discharged extinguisher is not only ineffective but can give you a false sense of control over the fire. Fire extinguishers should be recharged or replaced after every use, even if only briefly used.
If the extinguisher shows signs of previous discharge, or if you’re uncertain about its status, do not use it. Instead, evacuate and call emergency services to handle the fire.
9. When You Are Unsure of Your Ability to Control the Fire
Using a fire extinguisher requires a certain level of physical and mental preparedness. If you feel hesitant, unsure, or overwhelmed, it’s better to evacuate than to risk putting yourself in danger. Fire emergencies can be stressful, and being unprepared or uncertain can hinder your response time, increasing the risk to your safety.
If you’re uncertain about your ability to control the fire, or if the situation feels overwhelming, prioritize your safety. Get yourself and others out and call the fire department immediately.
Conclusion
While fire extinguishers are invaluable tools for small, contained fires, they are not always the answer. In situations where the fire is too large, the type of extinguisher is incompatible, smoke fills the room, or there’s no clear exit, using an extinguisher can increase the risk to your life. Recognizing these situations and choosing to evacuate instead can be the safest choice.
By understanding the limits of fire extinguishers, ensuring regular training, and knowing when to evacuate, you can protect yourself and others in an emergency. Remember, your safety is the priority, and in many cases, leaving the fire to the professionals is the wisest and safest decision.