A fire extinguisher should be replaced if: • The fire extinguisher was accidentally discharged/ used to put out a fire. • Inspection sticker or hang tag is missing. • The hose or nozzle is cracked, ripped, or blocked with debris. • The locking pin on the handle is missing or unsealed. • The handle is wobbly or broken.
Over time any fire extinguisher will lose its ability to put off fires even after certain maintenance, in such a case, the fire extinguisher must be replaced. One can say that a fire extinguisher is expired when it has lost the ability to extinguish fires and this may happen due to damage to the fire extinguisher, improper maintenance, etc.
When to Replace a Fire Extinguisher | Fire Systems Inc.
The seal is a proof that the fire extinguisher has not been tampered with or used since the last inspection or service. Also, it keeps the safety pin from getting loose or accidentally falling out. Without that safety pin, the extinguisher could be partially discharged or triggered.
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How to operate a fire extinguisher?
Most fire extinguishers should be operated using the PASS technique: P ull out the safety pin, A im the extinguisher at the base of the fire, S queeze the handle, and S weep the spray from side to side. In the US, fires have five main classifications, and fire extinguisher ratings are based on the kind of fire they are intended to put out.
How do I know if my fire extinguisher is working properly?
There would be a green zone between two red ones. If the indicator is in either of those red zones, your fire extinguisher needs immediate service. You can also check for safety pin.
What type of fire extinguishers release a fine powder?
Many fire extinguishers release a fine powder. The most common is the multipurpose dry chemical type, which is used for Class A, B, and C fires. These contain monoammonium phosphate, which comes out as a yellow powder. The yellow color helps to distinguish it from other non-multipurpose extinguishers.
What happens if you inhale smoke from a fire extinguisher?
The damage to the skin can be limited to mild redness, but blisters are also possible. Damage to the eyes can also occur with direct exposure. If you suspect someone has inhaled spray from a fire extinguisher, get them to fresh air immediately.
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Reference:
https://www.usfa.fema.gov/
https://en.wikipedia.org/wiki/Fire_extinguisher