Fire extinguisher refilling is an essential part of fire safety maintenance to ensure extinguishers remain effective and ready for use. Here are the key points regarding refilling:
Fire extinguishers must be refilled immediately after each use, even if only partially discharged. They also require routine refilling and maintenance throughout their lifespan, usually every 6 to 12 years or sooner if there is any damage or leakage detected.
Refilling generally involves completely discharging the extinguisher, dismantling it, cleaning, checking for damage, pressure testing the cylinder (hydrostatic test), repainting (in some services), refilling with the proper extinguishing agent (e.g., dry powder, CO2, foam, water), replacing valves and seals, repressurizing with the correct gas (such as nitrogen), leak testing, and reassembling.
Refilling should be done by trained and certified professionals or authorized service centers to ensure compliance with safety standards and manufacturer instructions. Unauthorized refillers may use substandard materials and incomplete processes that could compromise extinguisher performance.