FYI Here is what the annex to the section below from NFPA 13 (2022) states:
A.16.2.4.2 Plastic bags should not be used for this purpose due to the fact that shrinkage prior to development of temperatures needed to ensure sprinkler activation can interfere with proper sprinkler operation and development of spray patterns. The prohibition against plastic bags should include polypropylene bags commonly marketed as "cello" bags. True cellophane degrades rather than melts and, like paper, does not display shrinkage. As has already been recommended, I would second wax-coated sprinklers or paper bags over sprinklers...along with a robust maintenance plan with either route chosen. Hope this helps, Ryan L. Hinson, PE*, SET** \ Burns & McDonnell Associate Fire Protection Engineer O 612-900-3755 \ M 763-688-4045 \ F 952-229-2923 [email protected]<mailto:[email protected]> \ burnsmcd.com<http://www.burnsmcd.com/> 8201 Norman Center Drive, Suite 500 \ Minneapolis-St. Paul, MN 55437 *Registered in: AK, LA, MD, MN, PA, TX, & UT **NICET IV - Water-Based Systems Layout From: JOSEPH MCCAFFERTY <[email protected]> Sent: Monday, September 18, 2023 1:16 PM To: Discussion list on issues relating to automatic fire sprinklers <[email protected]>; Michael de Gabriele <[email protected]> Subject: [Sprinklerforum] Re: Best fire protection solution for dirty environment Do the sprinklers etc need corrosion protection from the stored product as well? On 17/09/2023 01:56 Michael de Gabriele <[email protected]<mailto:[email protected]>> wrote: Has anyone ever done this to a 10000m2 warehouse? On Sun, 17 Sep 2023 at 2:37 am, Jackie Ward <[email protected]<mailto:[email protected]>> wrote: For paint spray areas, we bag our heads. It sounds like your environment would be similar. The following is from the 2019 edition of NFPA-13 for reference. [cid:[email protected]] Thank you, Jackie "JW" Ward 1-405-240-7076 From: Michael de Gabriele <[email protected]<mailto:[email protected]>> Sent: Friday, September 15, 2023 6:05 PM To: Discussion list on issues relating to automatic fire sprinklers <[email protected]<mailto:[email protected]>> Subject: [Sprinklerforum] Best fire protection solution for dirty environment Good morning I trust that everyone is well I currently have a project in Geelong Australia where the product bulk stored within the buildings make for a extremely dusty environment when unloading. Sprinkler protection is proposed to protect the building and wanted to ask the question about "excessive loading of sprinklers" and what the best option would be to minimise this I am aware that NFPA 25 mentions this, our code in Australia does not mention this term but states that yearly the sprinklers must be visually checked and suggest that a more stringent maintenance routine be in place for these environments. The product bulk stored is phosphate rock typically and is used for the fertiliser manufacturing plant across the road. Any suggestions to the above query would be much appreciated. Kind regards Michael Paul de Gabriele Fire protections engineer _________________________________________________________ SprinklerForum mailing list: https://lists.firesprinkler.org/list/sprinklerforum.lists.firesprinkler.org To unsubscribe send an email to [email protected]<mailto:[email protected]> _________________________________________________________ SprinklerForum mailing list: https://lists.firesprinkler.org/list/sprinklerforum.lists.firesprinkler.org To unsubscribe send an email to [email protected]<mailto:[email protected]>
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