Inspection, Testing, and Maintenance
This domain tests what must be inspected, tested, and maintained, how often, and what the paperwork must prove. NFPA 72 Chapter 14 separates inspection (visual), testing (functional), and maintenance (repair or replacement).
Frequencies that get tested
- Initiating devices, control unit functions, and off-premises transmission: annually.
- Notification appliances: semiannual.
- Valve tamper switches: quarterly; waterflow switches: semiannual, also addressed by NFPA 25. Confirm each item in the table of the adopted edition.
- Smoke detector sensitivity: within one year of installation, then every alternate year.
- Batteries: annual 30-minute discharge test, with sealed and vented cells inspected on different intervals.
- A complete acceptance test before the system is placed in service, witnessed by the AHJ.
Records and impairments
Inspection and testing reports document each event, and records are retained and produced for the AHJ on request. When a system is impaired, notify the AHJ and the supervising station, tag the panel, and implement a fire watch or other mitigation until restoration. Restoring service without documenting the impairment is itself a finding.
Worked example
A quarterly route is scheduled. The technician finds a tampered valve, records it, functionally tests the switch, and confirms the supervisory signal reached the supervising station. Notification appliances are not on the quarterly route, so the semiannual appliance test still appears on the annual plan. Frequencies run on different clocks, and silently dropping one is the classic defect.
Traps
Treating a visual walk-through as a test; skipping sensitivity checks because devices are addressable; assuming the sprinkler contractor covers alarm inspection; failing to record impairments and restorations.