Hydrostatic testing is a procedure used to test the pressure resistance and overall integrity of fire extinguishers. It involves filling the extinguisher with water or an equivalent fluid and increasing the pressure to a specified level to simulate normal use and ensure that the extinguisher will not fail under normal conditions.
The test helps verify that the fire extinguisher is safe and reliable and checks for any leaks or defects in the cylinder or valve components.
Hydrostatic Test Requirements
According to the National Fire Protection Association (NFPA), the hydrostatic test requirements for different types of fire extinguishers vary. However, the NFPA 10: Standard for Portable Fire Extinguishers provides the following guidelines for hydrostatic testing:
- Pressurized water extinguishers (such as water and foam extinguishers) must be hydrostatically tested every 5 years.
- Carbon dioxide extinguishers must be hydrostatically tested every 5 years or every 10 years if the manufacturer's instructions allow it.
- Dry chemical extinguishers must be hydrostatically tested every 12 years.
- Wet chemical extinguishers must be hydrostatically tested every 5 years.
- Class D extinguishers must be hydrostatically tested every 12 years.
- Cartridge-operated dry chemical extinguishers must be hydrostatically tested every 12 years (chemical cylinder) or every 5 years (pressure cylinder) if the manufacturer's instructions allow it.
- A 6 year maintenance is required if the cylinder requires a 12 year hydrostatic test.
It is important to note that the above guidelines are specific to the standard established by the NFPA 10: Standard for Portable Fire Extinguishers. Therefore, following the codes and standards set by the NFPA and other organizations is essential. Additionally, it is required to have the Hydrostatic test done by a certified technician, who will be able to perform the test and maintain the fire extinguisher properly.
In summary, Hydrostatic testing is an essential step to ensure that fire extinguishers are in proper working condition and ready to use in the event of a fire. The frequency of the test varies depending on the type of fire extinguisher, and it is important to follow the guidelines set by the NFPA and other organizations.
Contact Koorsen for Extinguisher Hydrostatic Testing and Inspections
Koorsen Fire & Security has been in the fire extinguisher business since 1946. Our fire extinguisher technicians are expertly trained and can handle all of your fire extinguisher inspection needs, including hydrostatic testing. Contact Koorsen today for everything from sales, recharges, inspections, and hydro testing.