NFPA 25 sets the inspection, testing, and maintenance schedule for water-based fire protection systems. In Lake Charles, the local AHJ and the Louisiana State Fire Marshal expect documentation that shows each interval was completed by a licensed contractor.
Quarterly work includes gauge readings, alarm device checks, and main drain tests where required. Annual work adds a full visual inspection of heads, piping, hangers, and the fire department connection, plus trip tests on dry-pipe valves.
Every five years, internal pipe inspections and gauge replacement or calibration are due. Missing these is one of the most common reasons buildings fail inspection.
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