How often should full internal inspections be conducted for stored-pressure extinguishers?

Full internal inspections for stored-pressure fire extinguishers should be conducted every 6 years. This is essential because it ensures that the extinguisher is in proper working condition and that internal components, such as the pressure gauge and other vital parts, are functioning correctly. During an internal inspection, technicians can identify any corrosion, leakage, or other potential issues that may compromise the extinguisher's performance in an emergency.

Regular internal inspections are crucial for maintaining the reliability of stored-pressure extinguishers. While monthly visual inspections and annual maintenance checks are also important, the specific requirement for a full internal inspection every 6 years is outlined in NFPA (National Fire Protection Association) regulations to ensure thorough evaluation and maintenance of these critical safety devices.