- The following types of fire extinguishers are considered obsolete and shall be removed from service:
- Soda acid
- Chemical foam (excluding film-forming agents)
- Vaporizing liquid (e.g., carbon tetrachloride)
- Cartridge-operated water
- Cartridge-operated loaded stream
- Copper or brass shell (excluding pump tanks) joined by soft solder or rivets
- Carbon dioxide extinguishers with metal horns
- Solid charge type AFFF extinguishers (paper cartridge)
- Pressurized water extinguishers manufactured prior to 1971
- Any extinguisher that needs to be inverted to operate
- Any stored pressure extinguisher manufactured prior to 1955
- Any extinguisher with 4B, 6B, 8B, 12B, and 16B fire ratings
- Stored pressure water extinguishers with fiberglass shells (pre-1976)
- Dry chemical stored pressure extinguishers manufactured prior to October 1984 shall be removed from service at the next 6-year maintenance interval or the next hydrostatic test interval, whichever comes first.
- Any fire extinguisher that can no longer be serviced in accordance with the manufacturer’s maintenance manual is considered obsolete and shall be removed from service.
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