What is the required inspection frequency for pipes and fittings in a dry system?

The annual inspection frequency for pipes and fittings in a dry system is established to ensure that these critical components are functioning properly and are free from issues that could compromise fire protection efforts. Dry systems, which are used in environments subject to freezing, rely on air pressure to keep water from entering the pipes until activation is needed.

Conducting inspections annually allows for regular assessment of the integrity of the system components, including testing for any leaks, corrosion, or damage that may have developed over time. This frequency is critical for maintaining operational readiness and complying with fire safety regulations, ensuring that the system can effectively function in the event of a fire.

The other inspection frequencies do not align with the recommendations set forth in the standards for these systems. Monthly and quarterly inspections may not be practical or necessary given the nature of dry systems, whereas inspections every five years would be too infrequent to adequately guarantee the reliability and safety of the system. Therefore, the annual inspection frequency strikes a balance between maintaining safety and ensuring the systems remain in effective working order.