Portable Fire Extinguishers
OSHA 29 CFR 1926.150 & 1910.157: Annual Training Required if Employees Are Expected to Use Extinguishers
Portable fire extinguishers provide a critical first defense against incipient-stage (small, contained) fires. OSHA mandates that any employee expected to use an extinguisher must receive training at the time of assignment and annually thereafter. Attempting to use an extinguisher without proper instruction can worsen the fire or put yourself and others in danger.
OSHA Requirements: Key Points
- Extinguishers must be securely mounted, clearly located, and properly identified to ensure immediate access in an emergency. Locations should be unobstructed and visible.
- Only approved and properly rated extinguishers are permitted, ensuring they are suitable for the hazards present.
- Extinguishers must be maintained, fully charged, and kept in their designated locations. Regular checks ensure they are always ready for use.
- Employers are responsible for annual maintenance inspections by qualified personnel, and for keeping inspection and maintenance records on file.
- Annual extinguisher training is required for all employees who may use an extinguisher during an emergency.
Fire Classes & Extinguisher Types
- Class A — Ordinary combustibles such as wood, paper, cloth, and trash.
- Class B — Flammable liquids include gasoline, oil, grease, solvents, and paints.
- Class C — Fires involving energized electrical equipment, panels, or wiring.
- Class D — Combustible metals such as magnesium, titanium, or sodium.
- Class K — Fires involving cooking oils and animal fats, typically in commercial kitchens.
It is essential for workers to identify which extinguisher to use for each fire class. Using the incorrect extinguisher can intensify the fire or cause additional hazards, such as electrical shock or chemical reactions.
When to Use an Extinguisher
Only attempt to use a fire extinguisher if all the following conditions are met:
- The fire is small, contained, and has not spread beyond its origin (incipient stage).
- You have the correct type of extinguisher for the fire class present.
- There is a clear, unobstructed exit route behind you always.
- You received proper extinguisher training and feel confident in your ability to use it.
If any of these conditions are not satisfied: Evacuate immediately, alert others, and contact emergency services.
How to Use an Extinguisher (P.A.S.S.)
- P – Pull out the safety pin to unlock the extinguisher handle.
- A – Aim the nozzle or hose at the base of the fire, not the flames.
- S – Squeeze the handle to discharge the extinguishing agent.
- S – Sweep the nozzle side to side across the base of the fire until it is out.
Inspection & Maintenance (Crew Awareness)
Although formal inspections and maintenance are the employer’s duty, all workers should be familiar with the basics of extinguisher readiness and report any issues promptly:
- Extinguisher is present in its assigned location and not blocked or hidden.
- Pressure gauge is in the green (normal/charged) zone.
- Safety pin and tamper seal are intact and undamaged.
- No visible signs of damage, corrosion, leakage, or clogged nozzle.
OSHA requires monthly visual inspections by the employer and a more thorough annual maintenance check by trained personnel.
Common Hazards & Mistakes
- Selecting the wrong extinguisher for fire class may spread the fire or cause harm.
- Standing too close to the fire, risking burns or inhaling harmful smoke or fumes.
- Turning your back on a fire, which can be unpredictable and spread rapidly.
- Failing to confirm a clear escape route before attempting to extinguish the fire.
- Trying to extinguish a fire that has grown too large or is spreading quickly; in these cases, evacuation is the safest action.
Employee Responsibilities
- Know where all fire extinguishers are located within your work area.
- Always keep access to extinguishers clear and free from obstructions.
- Immediately report missing, damaged, or discharged extinguishers to your supervisor.
- Participate in all required annual fire extinguisher training sessions to maintain readiness.
- Follow the workplace Emergency Action Plan, including evacuation procedures if a fire cannot be safely controlled.
Key Takeaway
If you are expected to use a fire extinguisher at work, annual training is not only important but also required by OSHA. Using the wrong extinguisher or attempting to fight a fire without training can result in severe injury or worse. Always prioritize safety: if you are unsure, evacuate, alert others, and let trained emergency responders handle the situation.