Great information. I really appreciate the time it must have taken to gather this information. Thank you!
John Irwin DynaFire Inc. -----Original Message----- From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org] On Behalf Of Hinson, Ryan Sent: Thursday, March 1, 2018 12:53 PM To: sprinklerforum@lists.firesprinkler.org Subject: RE: fixed site industrial hose monitor Right-o on what's being protected. Is NFPA 400 applicable in this jurisdiction? If so, fertilizer (ammonium nitrate per Section 11.1.2 of the 2013 edition) and the protection thereof are required in accordance with Section 6.2.1.1 as required by Section 11.2.6. Section 6.2.1.1 requires all four high-hazard protection levels to include an approved automatic sprinkler system complying with Section 13.3 of NFPA 1 (2018). NFPA 400 Section 6.2.1.1.1 requires a minimum OH2 sprinkler system. Is the building sprinklered off which this loading dock extends? What is the total weight of stored bagged fertilizer? More than 2500 tons requires sprinkler protection or special AHJ-approval per NFPA 400 Section 11.2.6.1.1.1. The AHJ is given authority to determine whether greater quantities can be stored without sprinkler protection if consideration is given to proximity of storage to congested areas, and the presence of contaminants where a special hazard is deemed present per Sections 11.2.6.1.2 and 11.2.6.1.3. Section 11.2.6.2.1 requires portable extinguishers throughout the storage, loading, and unloading areas per NFPA 10. Section 11.2.6.2.2 allows small hose systems in accordance with NFPA 14. Fire hydrants and water supplies are to be in accordance with the adopted fire code and as required by the AHJ per Section 11.2.6.3. If the area where the facility is located is considered remote, it is within the AHJ's purview to waive sprinkler or even hydrant requirements per Section 11.2.6.4. Is it possible that the fixed monitors are the AHJ's corrosion reducing alternative (or special) protection equivalent for this hazard as inferred in NFPA 24 (2016) Section 9.2? If so, it is my opinion that they should provide you with a written document directive outlining what they will allow. Regarding monitor protection, typical fixed monitor sprays exceeding 250 gpm are the minimum threshold for masterstream nozzles allowing either straight-stream for maximum reach or wide-fog stream for large area wetting/cooling in accordance with NFPA 24 Section 9.1. Was any direction given regarding automatic monitor activation? What about local vs. remote manual activation? Is the intent for the monitors to be able to throw through the loading dock doors? If so, how far? How will prevailing winds affect the selected nozzle flow-based throw pattern? Based on the info provided, you will likely need at least 500 gpm to operate both monitors simultaneously. What type of pressure is available for monitor operation? Typical monitor nozzle design points are residual pressures of 100 psi at the base of the nozzle with some low-pressure models operable down to 75 psi. Typical minimum setbacks from protected equipment or areas for local manually-operated monitors in petrochemical settings are 50 ft to keep exposure heat-flux to the operator below certain thresholds. This may be different for your application. Duration of flow may be equivalent to that of hose stream durations or longer...or it may be limited to their engine response time. Is UL listing or FM approval going to be required on the components you select? You need several answers before you can complete this design. Ryan L. Hinson, PE*, SET** \ Burns & McDonnell Senior Fire Protection Engineer O 952-656-3662 \ M 320-250-5404 \ F 952-229-2923 rhin...@burnsmcd.com \ burnsmcd.com 8201 Norman Center Drive, Suite 300 \ Bloomington, MN 55437 *Registered in: LA, MD, MN, PA, TX, & UT **NICET IV - Water-Based Systems Layout -----Original Message----- From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org] On Behalf Of John Irwin Sent: Thursday, March 01, 2018 8:27 AM To: sprinklerforum@lists.firesprinkler.org Subject: fixed site industrial hose monitor Here’s something new to me … We have an AHJ asking us to install 2 new, fixed hose cannons at loading dock doors at a fertilizer plant. That’s the extent of the direction we were given. So naturally I have to justify this with code to support its requirement, and to verify that it’s done properly. Can someone provide direction on which path I even begin on. Where should I look for proper spacing, calculation procedures. heck is there even a requirement (I assume this will lead to knowing what’s being protected … ) Any leads are greatly appreciated. John Irwin Fire Sprinkler Specialist DynaFire, Inc. 727-282-9243 – Cell *“A customer is the most important visitor on our premises. He is not dependent on us. We are dependent on him. He is not an interruption on our work. He is the purpose of it. He is not an outsider on our business. He is a part of it. We are not doing him a favour by serving him. He is doing us a favour by giving us an opportunity to do so.”* -------------- next part -------------- An HTML attachment was scrubbed... URL: <https://urldefense.proofpoint.com/v2/url?u=http-3A__lists.firesprinkler.org_private.cgi_sprinklerforum-2Dfiresprinkler.org_attachments_20180301_910a38b7_attachment.html&d=DwIGaQ&c=pgTKN5yjcEYSPUPpeP-zuA&r=NcyRL-K75Is7l5iUo7UtKsal2WbPG4sAR-BrZExi8dA&m=sIaqidqazefr08QoEJS6T7Ky5hHy_23dvecmgspK2nk&s=xx3eF1NpjYriJkHoO5iUe6WIeCbkizrzDVOjmiqMyck&e=> _______________________________________________ Sprinklerforum mailing list Sprinklerforum@lists.firesprinkler.org https://urldefense.proofpoint.com/v2/url?u=http-3A__lists.firesprinkler.org_listinfo.cgi_sprinklerforum-2Dfiresprinkler.org&d=DwIGaQ&c=pgTKN5yjcEYSPUPpeP-zuA&r=NcyRL-K75Is7l5iUo7UtKsal2WbPG4sAR-BrZExi8dA&m=sIaqidqazefr08QoEJS6T7Ky5hHy_23dvecmgspK2nk&s=wt0T8sdBZKTMtLG2f_1DnioWX_jsLGLZ0hKLZrf6DHU&e= _______________________________________________ Sprinklerforum mailing list Sprinklerforum@lists.firesprinkler.org http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org _______________________________________________ Sprinklerforum mailing list Sprinklerforum@lists.firesprinkler.org http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
