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Every five years, NFPA 25 says somebody has to look inside the pipe. It's the one inspection that finds what the outside of a system will never show you: corrosion, scale, sediment and obstructions that quietly cut the water a system can deliver. We perform five-year internal inspections with our own crews, and repair what we find.
Opening the system at the required points to inspect pipe interiors, valve interiors and components for obstructing material.
If we find material that suggests a blockage, we tell you what it is and what it means for the system, not a line item saying we found something.
The five-year cadence covers more than pipe. Components get inspected and cleaned as required.
You see what we saw. Internal condition is hard to argue about when it's photographed.
Corrosion treatment, cleaning, component replacement or pipe repair, quoted and performed by us.
The system has to come down. We plan that around your building and your AHJ notification requirements.
The annual inspection tells you the system responds. A system can pass every external check while the inside of the pipe is closing up with corrosion product and scale. The five-year buys you an early look, while the fix is still cleaning and treatment rather than repiping.
Rust and tubercules on the inside wall. Common in dry and pre-action systems. Caught early it's treatment and monitoring. Left alone it becomes pinhole leaks and a repipe.
Mineral deposit and debris settling at low points and in branch lines. It restricts flow before it blocks anything, which is why external inspection can't see it.
Anything that doesn't belong in the pipe, from construction debris left at install to biological growth. The finding that most often triggers a full investigation.
Internal corrosion is the most common cause of obstruction in water-based systems, and dry and pre-action systems are especially exposed because of the oxygen and moisture combination inside them.
It's also the inspection buildings skip. A missed annual gets noticed. A missed five-year doesn't, until the survey, or until a system underperforms.
You get photos of everything we find and a plain reading of what it means for the system, ranked by what has to be dealt with now versus what gets watched. A five-year that produces a stack of images and no interpretation is half a service. See also fire sprinkler corrosion protection.
This matters more here than on any other inspection: a five-year that produces a finding almost always produces work, and the last thing a building owner needs is a second procurement cycle with an open system. One call, one accountable team, and the system comes back into service on our schedule rather than a second vendor's.
We do this work for customers like St. Jude and xAI.
An inspection of the inside of the sprinkler system, performed on the cadence NFPA 25 sets, to check pipe and component interiors for corrosion, scale, sediment and obstructing material that outside inspection can't detect.
Not quite. The five-year internal is the scheduled look inside. An obstruction investigation is the deeper follow-up that happens when the internal inspection, or a system event, indicates there may be an actual blockage. One can lead to the other.
Yes, for part of it. We plan the outage with you, keep it as short as the work allows, and handle the notifications that go with taking a system out of service.
You get photos, a plain explanation of the condition, and a quote to correct it. Depending on severity that ranges from cleaning and treatment to component replacement or section repipe. The same team does the work.
Yes. The requirement is based on the schedule, not on how new the building feels, and young dry and pre-action systems can show meaningful internal corrosion well inside a decade.
Usually, and it's the efficient way to do it. One mobilization, one coordinated shutdown, one set of records.
