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DE Fire Alarm: Inspection, Testing, and Maintenance per NFPA 72

DE Fire Alarm · Work through your exam, one topic at a time.

All guide sections

Inspection, Testing, and Maintenance per NFPA 72

This domain tests Chapter 14. The exam wants three things separated clearly: inspection (visual), testing (operational verification), and maintenance (work that keeps the system at design performance). It also wants the frequencies and the records.

Responsibilities and triggers

  • The owner is responsible for ensuring the system remains functional; testing must be performed by qualified personnel.
  • Acceptance testing occurs before occupancy; reacceptance testing is required after modification, repair, or replacement affecting system operation.
  • Impairments require notification of the AHJ, the supervising station, and occupants, plus a fire watch where required.

Common frequencies

  • Control equipment: annual test.
  • Smoke detectors: annual functional test with listed test method or aerosol; sensitivity checked within one year of installation and every alternate year thereafter unless the manufacturer specifies otherwise.
  • Heat detectors: annual functional test; nonrestorable fixed-temperature units may be tested on a 15-year sample basis per the code table.
  • Duct detectors: annual, and after duct cleaning or detector replacement.
  • Manual fire alarm boxes: annual.
  • Notification appliances: annual functional test, audible and visible.
  • Batteries: quarterly visual inspection, annual test or load check.
  • Records: retained until the next test, and at least one year; the Record of Completion for the life of the system.

Worked example

A five-story building has 180 smoke detectors, 24 manual stations, and 6 duct detectors.

Annual functional testing covers 180 + 24 + 6 = 210 devices. Sensitivity testing follows the alternate-year rule, so on average 180 ÷ 2 = 90 detectors receive a sensitivity check each year; in year one all 180 are checked because it is within a year of installation. Records must show device identification, test method, results, and the tester's name and date. If a detector is found outside its listed sensitivity range, it is cleaned, recalibrated, or replaced and then retested, with the corrective action documented.

Traps

  • Reporting an inspection as a test when no device was operated.
  • Testing only the panel and calling the system tested.
  • Missing reacceptance testing after adding devices or replacing a panel.
  • Failing to document sensitivity results or discarding records before the next test.