What are some popular solutions for elimination of wet-pipe sprinkler systems in data centers that have installed wet-pipe, VESDA and clean agent systems?
A client wants me to find a solution that will be acceptable to the local Authority Having Jurisdiction to eliminate the wet-pipe sprinkler system in the data center portion of the facility.
We already have the VESDA and clean agent. Are there other recommendations/insight here that might be helpful?
Thanks in advance.
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Jonathan D Griffin
11/25/2022 08:08:31 am
Double-interlock Pre-action Sprinkler systems are the most common system deployed in Data Centers. for instance, the Pre-action system can be interlocked with the VESDA or the Clean-agent system deployment (Empty Cylinder signal operates Solenoid) with AHJ approval.
11/25/2022 08:09:19 am
Have you contacted the AHJ? Clean agent should be acceptable
11/25/2022 08:25:13 am
Some AHJs are absolutely against eliminating even a single sprinkler head and will not allow clean agent in lieu. And pre-action is seen as a choice of last resort only after arguing it.
11/25/2022 08:57:00 am
Insurance point of view:
11/25/2022 09:16:34 am
Have you looked at Victaulic Vortex™ Hybrid Extinguishing System?
11/28/2022 08:02:27 am
I second this recommendation. I had a Victaulic rep come and show me a demonstration on this system. It has large upfront costs and a quite big footprint due to the proprietary cabinet, but it has passed many tests without damaging critical electronic components in data centers. Nitrogen and water.
11/25/2022 09:26:59 am
I agree that a double interlock preaction installed in addition to a clean agent system is most common.
Todd E Wyatt
11/25/2022 09:27:25 am
Per the scoping Code (e.g. 2021 IBC), the FCO (Fire Code Official) is given authority for the approval of “Alternative Automatic Fire-Extinguishing Systems” (AAFES) :
11/25/2022 10:12:53 am
Sprinklers is for people and property protection. Alternative systems are for protection of equipment. If the facility is just the data center who may have a chance, especially if unoccupied.
11/25/2022 12:07:05 pm
Double interlock preaction system. We do a lot of data centers this way.
11/26/2022 10:35:18 am
Sprinkler protection shall not be eliminated simply due to being in a space where water is not wanted. As Mr. Berger alluded to, "sprinklers are for people and property protection and alternative systems are for equipment protection", if the clean agent system does not fully extinguish the fire you would not have any means to contain / control the fire. If a fire gets large enough to fuse a sprinkler head, the equipment is probably already ruined.
11/28/2022 08:48:16 am
Todd nailed it. Basically if an automatic fire sprinkler system is required per 903, then the AHJ has the option to allow an alternative automatic fire extinguishing system per 904.
David Toshio Williams
11/28/2022 12:08:09 pm
We have a utility client with a data center within their central office building that installed water mist, originally only in the data center portion. As we designed some office floor remodeling projects located elsewhere in the building above the data center the choice was to install this system through out to prevent flooding of the lower floor data center. Expensive, proprietary, but was easily approved (and is kinda/sota a wet system with sprinkler heads). Installer has to use propriatary design software. https://www.marioff.com/en/water-mist/water-mist-fire-protection-in-brief/
11/29/2022 01:47:53 pm
Marrioff, Tyco and Fike have FM approved data center water mist protection systems. Not sure what specific data center listings verses performance-based design Victualic Vortex has but have seen installs.
12/3/2022 04:31:39 pm
double interlock preaction for data center, clean agent for small server rooms
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