How often should dry chemical systems be inspected according to NFPA 17?

The correct answer is based on the requirements outlined in NFPA 17, which states that dry chemical extinguishing systems should undergo inspection at least annually. Annual inspections are essential to ensure that the system is functioning properly and that all components are in good working condition. Additionally, NFPA 17 emphasizes the need for comprehensive testing of the system every 3 to 5 years. This testing is critical as it evaluates the system’s performance under conditions that simulate actual fire events, confirming the reliability of the extinguishing agent and the system’s response.

The combination of annual inspections and periodic testing (every 3 to 5 years) ensures that the dry chemical systems remain compliant with safety standards and continue to provide effective fire protection when needed. Regular checks can help identify potential issues before they lead to system failure, enhancing the overall safety of the environment protected by the system.