The halon 1301 visual inspection in lieu of hydro test is permissible only if the system has remained in service and the inspection is performed every 5 years. True or False?

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For halon 1301 fixed extinguishing systems, hydrostatic testing can be substituted by a visual inspection only when the system has remained in service and the inspection is performed every five years. This approach is used to confirm the system’s integrity without the disruption of a full hydro test, provided there have been no changes or incidents that would affect the vessel or piping.

The visual inspection must be done by a qualified person and should verify that there are no signs of leakage, corrosion, or physical damage, that all components (valves, discharge nozzles, detection and alarm devices, and actuation mechanisms) are present and accessible, and that pressure indicators or gauges show normal readings. Importantly, there should have been no service, repairs, or modifications since the last hydro test that would necessitate re-testing the system. If any issues are found or if the system has not remained in service, a hydrostatic test is required.