In the NFPA series of standards, is there a requirement for a water line supplying private fire hydrants to have backflow protection?
I am working on a project where the fire marshal is requiring double check detector assemblies to be installed on six private fire hydrants. The line serving the hydrants has no other connections to it. Thanks in advance. Sent in anonymously for discussion. Click Title to View | Submit Your Question | Subscribe
11 Comments
Chad
8/21/2023 07:10:45 am
Not in NFPA 24. Where I work, that's a water department decision, not fire. Perhaps the rationale is they are 'dead ends' that doesn't get flushed enough?
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Jesse
8/21/2023 08:05:42 am
Its not an NFPA thing, its from the plumbing code. If the "private system" will have 100-gallons or more of trapped water they will want a BFP.
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JH
8/21/2023 08:19:49 am
Hydrants on dead end mains is a frequent occurrence in our JD. We reference NFPA 1141 in most cases, which only addresses dead ends over 600 ft long, and less than 10 inches in diameter.
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Glenn Berger
8/21/2023 08:10:44 am
Is there not a backflow prevention assembly on the water main at the lot or property line?
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Todd E Wyatt
8/21/2023 08:11:38 am
Building Officials (AHJs) are required to enforce the adopted Codes and Standrards and to render interpretations as needed. They cannot require components above and beyond these requirements, however.
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Anthony
8/22/2023 07:37:29 am
This will probably be your fastest way to an answer.
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DS
8/21/2023 08:11:46 am
5.1* Connection to Waterworks Systems.
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Dan Wilder
8/21/2023 09:04:54 am
NFPA 24 - 22' Ed.
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RYAN HINSON
8/21/2023 09:43:10 am
And will void the listing of the BFP in most cases.
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Thomas G. Kamprath
8/21/2023 11:47:29 am
Typically, backflow protection is specified by the local jurisdiction Cross Connection Control Ordinance. If you can't find a Cross Connection Control Ordinance, check with the local water purveyor. They would know if there is an ordinance in effect.
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Mike Slaughter
8/23/2023 11:47:06 am
We are a Fire Code AHJ. It appears the AHJ is requiring a backflow at the point where the private water service connects to the public service. For buildings, cross-connection contamination is required by the International Plumbing Code (See Section 608 of the 2021 IPC). Also required for any underground connected to the public service which contains more than 100 gallons.
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