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Fire Extinguisher Inspections

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According to NFPA #10, portable extinguishers must be inspected and tagged on an annual basis. Every 6 stored_pressure_groupyears, stored-pressure fire extinguishers must be subjected to a full internal inspection. This procedure includes removing and replacing the fire-extinguishing agent as well as the valve assembly to ensure the seal remains closed.   

Hydrostatic Testing

Hydrostatic testing (pressure tested using water or some other non-compressible fluid to help prevent unwanted failure or rupture of the cylinder) is required in regular intervals on all extinguishers.  These intervals vary depending on the type of extinguisher.  See below for specific testing requirements:

Extinguisher Type

Test Interval (Years)

Stored-pressure water, water mist, loaded stream, and/or antifreeze

5

Wetting agent

5

AFFF (Aqueous Film-Forming Foam)

5

FFFP (Film-Forming Fluoroprotein Foam)

5

Dry chemical with stainless steel shells

5

Carbon Dioxide

5

Wet Chemical

5

Dry chemical, stored-pressure, with mild steel, brazed brass or aluminum shells

12

Dry chemical, cartridge or cylinder operated with mild steel shells

12

Dry powder, stored-pressure, cartridge or cylinder operated, with mild steel shells

12

**All repair work and hydrostatic testing is done in our DOT certified maintenance shop by NAFED Certified employees.

Reliable Fire & Security is pleased to offer the following services:

  • Annual Automatic Service Plan – Reliable will automatically schedule your annual fire extinguisher inspection well in advance of the expiration date
  • Fire extinguisher surveys at no additional charge
  • Mobile recharge capability
  • Guaranteed Next Day Service for empty fire extinguishers
  • Our shop staff can repair large capacity industrial wheeled fire extinguishers