Fire Extinguishers can be a life saving tool or a liability if they are not properly maintained! Part of this maintenance is recognizing when a fire extinguisher has become obsolete and possesses the potential to not operate properly when it is needed.
Per NFPA 10 4.4 (https://www.nfpa.org/), we are required to condemn (or remove from service) obsolete fire extinguishers based on the following criteria.
Dry Chemical Stored Pressure
- All dry chemical stored-pressure extinguishers manufactured prior to October 1984 shall be removed from service sat the next 6-year maintenance interval or the next hydrotest, whichever comes first.
- Any store pressure extinguisher manufactured prior to 1955 shall be removed from service.
- Manufactured prior to 1971 shall be removed from services (due to a neck size change in 1971).