I would say yes, in 2022 at least there's a "least to worst" list of commodity at 20.3.1.3 and 20.3.1.4 explicitly states protection criteria for a higher commodity can protect a lower one. Cartoned is lower than exposed.
Mike Morey CFPS 3229 * NICET S.E.T. 123677 Project Estimator * Fire Protection Group Shambaugh & Son, LP an EMCOR Company 7614 Opportunity Drive * Fort Wayne, IN * 46825 direct 260.487.7824 / cell 260.417.0625 / fax 260.487.7991 email [email protected]<mailto:[email protected]> [cid:[email protected]] From: Kyle.Montgomery <[email protected]> Sent: Friday, August 23, 2024 1:37 PM To: Discussion list on issues relating to automatic fire sprinklers <[email protected]> Subject: [Sprinklerforum] Protection of Expanded Group A Plastics If a system is designed to protect EXPOSED Expanded Group A Plastics, then is it automatically sufficient for protection of CARTONED Expanded Group a Plastics? In the NFPA 13 table, there is no option listed for protecting Cartoned Expanded ZjQcmQRYFpfptBannerStart Be Careful With This Message The sender's identity could not be verified and someone may be impersonating the sender. ZjQcmQRYFpfptBannerEnd If a system is designed to protect EXPOSED Expanded Group A Plastics, then is it automatically sufficient for protection of CARTONED Expanded Group a Plastics? In the NFPA 13 table, there is no option listed for protecting Cartoned Expanded Group A Plastics with K22 or K25 ESFR sprinklers. Why is that? There are options for K14 and K17 sprinklers. There is an option to use K25 ESFR sprinklers to protect Exposed Expanded Group A Plastics. If a system is designed to that criteria, does that system also provide adequate protection for Cartoned Expanded Group A Plastics? [Note: I do know that there are more protection options using FM datasheets, but I'm curious specifically about NFPA requirements.] Thanks. Kyle Montgomery [cid:[email protected]] Aero Automatic Sprinkler Co. 21605 N. Central Ave. Phoenix, AZ 85024 Direct: 623.580.7820 Cell: 602.763.4736 [email protected]<mailto:[email protected]> This message is for the named person's use only. It may contain confidential, proprietary or legally privileged information. No confidentiality or privilege is waived or lost by any mistransmission. If you receive this message in error, please immediately delete it and all copies of it from your system, destroy any hard copies of it and notify the sender. You must not, directly or indirectly, use, disclose, distribute, print, or copy any part of this message if you are not the intended recipient.
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