How often does NFPA 25 require inspection?

NFPA 25 sets a schedule from weekly, monthly, quarterly, annual intervals. The full task-by-task table with code sections and who may perform each task is shown above, and the calendar builder dates it from your real last-completed dates.

Which of these tasks can be done in-house?

Tasks marked Tier 1 or Tier 2 can be performed by trained facility staff with documentation under the national code. Tier 3 tasks require a certified or licensed professional. Starred tasks are qualified in-house under the national code but licensing is commonly required locally — confirm with your AHJ.

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NFPA 25 Sprinkler Inspection Schedule

The NFPA 25 inspection, testing, and maintenance schedule for wet and dry sprinkler systems — with which tasks trained staff can perform in-house.

1Address
2Facility
3Systems
4Details
5Dates
6Review

Facility addressFacility name (optional)Street address

Printed on every output — the calendar header and log sheets. You can skip it and add it later.

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NFPA 25 schedule

Every requirement carries its code section and the edition it was verified against. ★ = qualified in-house under the national code, but licensing commonly required locally — confirm with your AHJ.

Task	Frequency	Who may perform	Code (edition)	Record
Gauges + control valves (dry / pre-action / deluge)	Weekly	In-house (basic)	NFPA 25 Table 5.1.1.2 (2023)	Log
Gauges + alarm valves (wet systems)	Monthly	In-house (basic)	NFPA 25 Table 5.1.1.2 (2023)	Log
Control valves: sealed / locked / supervised, correct position	Monthly	In-house (basic)	NFPA 25 §13.3 (2023)	Log
Waterflow alarm devices, supervisory devices, FDC condition ★	Quarterly	In-house (qualified)★	NFPA 25 §5.3.3 / §13.7 (2023)	Test record
Main drain test at each riser (backflow / PRV on sole supply) ★	Quarterly	In-house (qualified)★	NFPA 25 §5.3.3 (main drain quarterly where sole supply passes through backflow preventer or PRV) (2023)	Static + residual pressures; compare to prior; >10% drop investigated
Main drain test (all risers) ★	Annual	In-house (qualified)★	NFPA 25 §13.2.5 (2023)	Pressures vs prior year
Full inspection — heads, pipe, hangers, bracing, signage, spare heads	Annual	Certified / licensed	NFPA 25 §5.2 (2023)	Report + deficiency list
Internal pipe assessment (obstruction investigation)	Every 5 years	Certified / licensed	NFPA 25 §14.2 (2023)	Report
Sprinkler head sample testing (50 yr; 20 yr fast-response)	Every 50 years	Certified / licensed	NFPA 25 §5.3.1 (2023)	Lab report

Other schedules: NFPA 72 · NFPA 96 · NFPA 110 · NFPA 80 · NFPA 10

National consensus-standard baseline with the edition noted per item. Your state, fire marshal, or accrediting body may require more frequent service or licensed personnel where a qualified person is shown. General information, not legal or engineering advice — confirm with your AHJ.