Whether indicating valves are required on either side of the bypass check valve. The standard does not say though the all referenced figures I can find as well as commentary indicate this to be the configuration.
Ryan L. Hinson, PE*, SET** \ Burns & McDonnell Associate Fire Protection Engineer \ Upper Midwest Region 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 \ Bloomington, MN 55437 *Registered in: AK, LA, MD, MN, PA, TX, & UT **NICET IV - Water-Based Systems Layout From: Prahl, Craig <[email protected]> Sent: Tuesday, February 4, 2025 4:29 PM To: Discussion list on issues relating to automatic fire sprinklers <[email protected]> Subject: [Sprinklerforum] Re: Enforceable as though Standard versus Annex language The Annex in that case only provides a pictorial depiction of the text in 4.16.4. The requirement is set in the main body text. What is debatable? Craig Prahl | Jacobs | Fire Protection SME – EV, AM, DC, Special Hazards [email protected]<mailto:[email protected]> | www.jacobs.com<https://urldefense.com/v3/__http:/www.jacobs.com/__;!!KZTdOCjhgt4hgw!-_khxU8gU0_6jc895I7kRbnU8JghRDsWgqOblZ4jr7Qp2IVbR30VYw_hWvNFtphnl0uWpB9KIvbYi1pvZz4$> 1041 East Butler Road Greenville, South Carolina 29606 CONTACT BY: Phone 1-864-676-5252, Email or MS TEAMS From: Hinson, Ryan <[email protected]<mailto:[email protected]>> Sent: Tuesday, February 4, 2025 4:29 PM To: [email protected]<mailto:[email protected]> Subject: [EXTERNAL] [Sprinklerforum] Enforceable as though Standard versus Annex language Ran into a scenario where there is disagreement on whether Annex A information is enforceable since the Standard language specifically calls out an Annex figure: Here is the language from NFPA 20 (2022) Section 4. 16. 4 regarding bypass configurations Ran into a scenario where there is disagreement on whether Annex A information is enforceable since the Standard language specifically calls out an Annex figure: Here is the language from NFPA 20 (2022) Section 4.16.4 regarding bypass configurations and whether gates both up- and downstream of the bypass check are required: [cid:[email protected]] Here is the explicitly referenced Annex figure: [cid:[email protected]] I assert that, if explicitly referenced (as if referencing an outside document), that document becomes part of the standard and is enforceable as such. There are those who disagree and says that unless the Annex is formally adopted, it is not required. What say you? Ryan L. Hinson, PE*, SET** \ Burns & McDonnell Associate Fire Protection Engineer \ Upper Midwest Region O 612-900-3755 \ M 763-688-4045 \ F 952-229-2923 [email protected]<mailto:[email protected]> \ burnsmcd.com<https://urldefense.com/v3/__http:/www.burnsmcd.com/__;!!B5cixuoO7ltTeg!AD3HfQEVM7eoRRCaCJZA_vDLWMRJPMdoh4VZ4t1okiTGDPOVM7riGo6q9E8qeSaZbCQlgDgDc-lqFBgcRSYL$> 8201 Norman Center Drive, Suite 500 \ Bloomington, MN 55437 *Registered in: AK, LA, MD, MN, PA, TX, & UT **NICET IV - Water-Based Systems Layout ________________________________ NOTICE - This communication may contain confidential and privileged information that is for the sole use of the intended recipient. Any viewing, copying or distribution of, or reliance on this message by unintended recipients is strictly prohibited. If you have received this message in error, please notify us immediately by replying to the message and deleting it from your computer.
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