Tag

fire-sprinkler

• July 24, 2026 · 4 min read

  Deficiency or Impairment? NFPA 25's Three Tiers and the Chapter 15 Procedure

  What separates a noncritical deficiency from a critical one from a full impairment under NFPA 25 — and the exact Chapter 15 steps required when a sprinkler system comes out of service.

• July 24, 2026 · 4 min read

  The NFPA 25 Sprinkler ITM Schedule: What's Due Quarterly, Annually, and on the Long Clocks

  The contractor's map of NFPA 25: what a quarterly visit actually covers, what the annual adds, and the 3-year and 5-year tests — trip tests, standpipe flows, and internal assessments — that spreadsheets always lose.