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What Happens When Fire Extinguishers Expire?

By 16 October 2023No Comments

Fire extinguishers stand as stalwart sentinels against the ravages of fire, providing a sense of security in the face of danger. However, like all guardians, fire extinguishers are not invulnerable to the passage of time. The question arises: What occurs when fire extinguishers expire? In this article, we delve into the intricacies of extinguisher expiration and the implications it carries.

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The Finite Lifespan of Fire Extinguishers

Fire extinguishers, while built to last, are not eternal. Just as machinery, devices, and tools have lifespans, fire extinguishers also possess a finite period of effectiveness. This is primarily due to the gradual degradation of key components that enable the extinguisher to function optimally. A pressure test on many fire extinguishers to the Australian Standard AS1851 stipulates 5 year pressure testing from the date of manufacture.

Fire Extinguisher Recycling

The Components at Play

An understanding of the components within a fire extinguisher is essential to grasp the consequences of expiration:

  1. Pressure Gauge: The pressure gauge monitors the internal pressure of the extinguisher. Over time, the pressure can decrease due to gas leakage or chemical breakdown. Note not all fire extinguishers have pressure gauges, such as CO2 fire extinguishers.
  2. Seals and O-Rings: These components prevent gas leakage and ensure the extinguisher remains pressurized. As they deteriorate, the extinguisher becomes vulnerable to pressure loss.
  3. Extinguishing Agent: The extinguishing agent, whether powder, foam, or CO2, can degrade, solidify, or lose its potency over time. Especially on machinery or an aggressive environment. The pressure test date from manufacture can decrease from 5 years to 3 years. 
  4. Nozzle and Valve: These parts facilitate the controlled release of the extinguishing agent. If compromised, the extinguisher’s efficacy is compromised as well.
  5. Information and use label: The fire extinguisher may fail due to the information sticker (or printed) being unable to be read or followed.

The Consequences of Expiration

  • Reduced Effectiveness: Important information when fire extinguishers expire leading to inadequate suppression of fires. The extinguishing agent might not discharge properly, and the pressure might be insufficient to propel the agent to the fire.
  • Safety Risks: Attempting to use an expired extinguisher can lead to unexpected malfunctions, risking injury to the operator. Additionally, if the extinguisher fails to perform, the fire can escalate.
  • Legal and Regulatory Compliance: In many regions, including Australia, expired fire extinguishers can lead to non-compliance with fire safety regulations, resulting in potential legal penalties.
  • Property and Asset Damage: The inability to control a fire due to an expired extinguisher can result in more extensive property damage, financial losses, and potential business disruptions.

Fire Extinguishers Expire

Routine Inspection and Maintenance: The Antidote

Routine inspection and maintenance are the antidotes to the consequences of expired fire extinguishers. Regular checks by qualified professionals to AS1851 can identify potential issues before they escalate. A maintenance schedule involves:

  1.   Visual Inspection: Regular visual checks for signs of damage, rust, corrosion, and tampering.
  2.   Pressure Check: Ensuring that the pressure gauge indicates the extinguisher is within the correct pressure range.
  3.   Seal and O-Ring Examination: Verifying that seals and O-rings are intact to prevent gas leakage.
  4.   Extinguishing Agent Inspection: Confirming the agent’s consistency, volume, and ability to discharge properly.
  5.   Nozzle and Valve Examination: Testing the nozzle and valve for functionality and proper discharge.

For more information about fire extinguisher testing/servicing/maintenance visit

Fire Extinguisher Services | Fire Extinguisher Testing & Inspection Services

The Renewal Process

If an extinguisher approaches its expiration date or exhibits signs of degradation, it’s advisable to seek professional evaluation. In some cases, recharge or refurbishment might be possible, extending the extinguisher’s life. However, there are instances where replacement is the safer and more cost-effective option.

A Time-Bound Guardian

Fire extinguishers, while formidable, are governed by the march of time. Understanding the implications of their expiration is crucial to upholding fire safety standards and ensuring optimal readiness. Routine inspection to AS1851, proactive maintenance, and adherence to replacement schedules are the keys to preserving the reliability of these crucial tools.

Remember, fire safety is a commitment that extends beyond the initial purchase of extinguishers. By staying vigilant and attentive to their expiration, we ensure that our guardians of fire safety remain unwavering and effective in times of need.

 Fire Extinguisher Recycling

FCF Fire & Electrical believes that just throwing expired fire extinguishers into landfill is not best for the environment. The team at FCF Fire & Electrical has set-up a dedicated recycling facility that helps refurbish, reuse, recycle fire extinguishers so that they can be saved from landfill.

Components of a fire extinguisher can be recycled, even through the recovery cost is low, FCF’s belief is the environment needs to be saved at any financial cost.

For more information visit: Fire Extinguisher Recycling – Fire Extinguisher Recycling

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