Are Fire Sprinklers Required to be Accessible?

9/4/2023

I got asked a weird question about NFPA 13 requiring sprinklers to be readily accessible.

A co-worker told me they didn't believe some sprinklers that would installed in a mechanical room we're designing would be easily accessible post-construction and asked if there were any kind of access requirements.

I can't think of anything in NFPA 13 that would require every head be easily accessible in the same way that NFPA 72 requires certain fire alarm components to be readily accessible.

Is there a requirement that sprinklers be accessible?

Where does this stem from?

Thanks in advance.

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9 Comments

Frank Savino link

9/4/2023 08:58:26 am

Sprinklers are required to be visually inspected periodically so visual capability is required. They therefore cannot be hidden from sight. You could technically accomplish visual inspection with a camera. In a sprinkler operates, access to it to replace it will be required so design should take that into account but it is not required. If one needs to remove ductwork, conduit, or anything else to get to it, it is still technically accessible.

Glenn Berger

9/4/2023 11:10:41 am

NFPA 13 provides guidance on obstructions. NFPA 13 provides guidance on testing / inspection.
Do the building owner a favor -- make them accessible for inspection and hopefully the building is constructed for sufficient time period that they will eventually need to be replaced.

Robert W Hughes

9/4/2023 12:08:14 pm

Dan Wilder

9/4/2023 02:00:00 pm

NFPA 13 only requires valves to be accessible and sprinklers for specific systems be accessible (duct sprinklers for example).

NFPA 25 says inspections from the ground only, sprinklers in concealed spaces do not require inspection.

Adam link

9/4/2023 09:15:56 pm

This article sums up the testing:
A lot is riding on your sprinkler system's ability to function properly. As such, you should make a habit of inspecting your fire sprinkler systems weekly. It's a requirement to hire a professional to carry out a full inspection at least once every year.

The National Fire Protection Association (NFPA) requires wet and dry systems to undergo testing every five years and a full performance test of the dry system every 3 years. That said, the NFPA 25 Standard for the Inspection, Testing, and Maintenance of Water-Based Fire Protection Systems requires certain weekly, monthly, quarterly, and annual inspections.

Weekly Inspection Procedures
-Inspect fire protection mains and branch lines prone to freezing temperatures to ensure proper functioning.
-Visually inspect all fire doors to ensure they’re free from obstructions and in good operating condition.
-Inspect and test automatic and manual fire alarm systems.
-Visually inspect gauges on dry, pre-action, and deluge systems to verify normal water and air pressures.

Monthly Inspections
The following testing and inspection requirements are in addition to those required for weekly fire sprinkler inspections.

-Visually inspect all control valves to ensure they are accessible, free from external leaks, and in their normal position.
-Visually inspect gauges on wet pipe systems to verify normal water pressure and ensure they’re in good working order.

Quarterly Tests and Inspections
-For hydraulically designed sprinkler systems, ensure the nameplate is legible and securely attached to the riser.
-Test and inspect water flow alarm devices to ensure they’re in good working condition.
-Inspect pressure-reducing valves to ensure they're in the open position, free from leaks, and in good condition.
-Mechanical water flow alarm devices should be tested quarterly. However, you can stick to semi-annual inspections if you have vane-type or pressure switch-type alarm devices.
-Inspect fire department connections to ensure that they’re in place, visible, accessible, free of physical damage, and working properly.

Annual Tests and Inspections
The NFPA 25 has very detailed instructions on annual testing and inspection procedures. Because of their complexity, annual fire sprinkler inspections should only be performed by licensed sprinkler contractors.

-All sprinklers, hangers, pipes, and fittings should be tested to ensure good working condition.
-Main drain tests should be conducted on all sprinkler systems to verify control valves are in the open position and working properly.
-Dry pipe valves should undergo a throttle trip test, cleaning, and resetting.
-Deluge valves should have a full trip test at least once a year. -The maximum frequency between full trip tests ought to be within 3 years.
-Each antifreeze solution used in the systems should be tested and adjusted if necessary
-Nozzles on water spray systems should be visually inspected and tested for proper flow.
-The system strainer should be removed and visually inspected for damage. Any corroded parts should then be replaced.

Juan L

9/15/2023 08:37:57 am

Excellent explanation, just one comment;

Quarterly fire sprinkler inspections doesn’t require a flow switch test with the exception of mechanical flow alarms.
Flow alarm test should be tested semiannually.

Pete H

9/5/2023 06:28:53 am

As many sprinklers can be in inaccessible combustible concealed spaces: Not at all.

But they do need to fulfill all the other requirements to maintain proper coverage.

Alex link

9/5/2023 12:16:58 pm

https://www.meyerfire.com/daily/access-required-for-concealed-space-sprinklers

Best automatic sprinkler system link

10/31/2023 06:09:07 am

The post's material is both substantial and easily understood. It addresses potential issues and concerns that may emerge during construction or renovation by providing a comprehensive explanation of the regulations controlling the accessibility of fire sprinkler systems. There is a clear structure and organization to the content. The dedication to safety and the post's adherence to fire safety rules are two of its strengths. It highlights the need of having readily available and operational fire sprinklers to protect people and property.

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Are Fire Sprinklers Required to be Accessible?

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