NFPA 25: Fire Sprinkler Codes & Inspections

NFPA 25 regulates the periodic inspection, testing, and maintenance of water-based fire protection systems. Business owners and property managers in San Francisco must maintain strict adherence to NFPA 25 standards to comply with the SFFD and pass local fire marshal audits.

Core NFPA 25 Inspection Intervals

Compliance requires regular system verification at multiple intervals:

Quarterly Inspections: Visual check of pressure gauges, water flow alarms, and control valves.
Annual Inspections: Comprehensive flow tests of sprinklers, main drains, freeze-protection devices, and hangers.
5-Year Testing: Mandatory internal inspections of piping, check valves, and full hydrostatic pressure testing of standpipe systems.

Fire Pump and Standpipe Compliance

For buildings with booster fire pumps or standpipe connections, NFPA 25 mandates weekly or monthly pump run tests, and full annual flow testing to ensure the pump automatically starts and maintains pressure during a fire emergency.

Frequently Asked Questions

Under NFPA 25 and California Title 19, basic visual checks and gauge inspections are quarterly, functional checks are annual, and structural internal assessments (internal pipe checks and standpipe hydro-testing) are required every 5 years.

No. NFPA 25 inspections and tests must be performed by certified C-16 fire protection contractors. Property managers can perform basic visual gauge checks, but official compliance tags can only be signed by a licensed technician.

Any failed component (a leaky check valve, a painted head, or a clogged gauge) is reported as a violation. International Fire Inc. can resolve sprinkler repairs immediately on-site to preserve system compliance.

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