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NFPA 25 is the baseline for inspection, testing, and maintenance of water-based fire protection systems.

One of the required activities is to perform an annual visual inspection of the sprinklers themselves. An annual frequency is defined as occurring once per year with a minimum of 9 months and a maximum of 15 months between inspections.

ing to NFPA 25, the property owner or designated representative is accountable for the fire protection system's overall maintenance. During monthly inspection, the on-site fire protection person should examine the pipe system gauges, ensure water pressure maintenance, and inspect the alarm valves.

As a general rule, NFPA 13, Installation of Sprinkler Systems, requires 18 inches of clearance, but makes the following modifications: For standard pendent and upright spray (SSP/SSU) sprinklers, the 18- inch dimension is not intended to limit the height of shelving or storage along a wall as illustrated below.

The annual test frequency is a minimum requirement, NFPA 25 permits more frequent testing if desired.

NFPA 25 requires an internal inspection of fire sprinkler system piping every five years. This is to be conducted to inspect for the “presence of foreign organic and inorganic material.” Foreign materials can cause obstructions to pipe and sprinklers.

For example, NFPA 25 addresses the “operating condition” of fire protection systems and specifically states that it “does not require the inspector to verify the adequacy of the design of the system.”2 NFPA 72 however, has no such directive and does not restrict inspections and tests to verifying the operating ...

A requirement of NFPA 25, 5.3 is that Fire Sprinkler Heads shall be tested and maintained as follows: Sprinkler Heads manufactured prior to 1920 be replaced. Sprinkler Heads at 50 years shall be sampled tested, and then every 10 years after that. If a head fails this test, then all similar heads shall be replaced.