I think you've latched on to an error. When the TC discussed moving the durations and the hose stream allowances from Chapter 18 to include them in Table 12.8.6, I don't remember any discussions about changing the durations.
In the 2013 edition, the only ESFR requirement for a 3 hr. duration was for on-tread, on side, and laced tires in open portable steel racks or portable palletized racks. All of the other criteria only called for one hr. I think when the information was moved, an editing mistake was made. It looks to me like someone took the worst case. Larry Keeping -----Original Message----- From: Sprinklerforum [mailto:[email protected]] On Behalf Of Dan Arbel Sent: February-22-16 1:03 PM To: [email protected] Subject: RE: ESFR duration Thank you Craig for your response. 1. The ESFR is supposed to operate early enough before the fire gets its hold within the tires. 2. FMGlobal did not make any changes. 3. I'm not aware of any fire testing justifying a triple duration. 4. The last significant test series done with ESFRs I know off is reported in http://www.lecaoutchouc.com/images/Partie_publique_ESS/Dossier_N1_Version_an glaise.pdf I am still looking for hard evidence Dan Dan Arbel Risk Engineering T: 972-4-8243337 F: 972-4-8243278 M: 972-52-6611337 Mail: [email protected] W: www.riskmanage.com -----Original Message----- From: Sprinklerforum [mailto:[email protected]] On Behalf Of [email protected] Sent: Monday, February 22, 2016 7:33 PM To: [email protected] Subject: ESFR duration Because 1-hour for a tire fire does nothing but get things wet. Water supplies for firefighting is one area where fire protection engineers miss the mark big time. Too many don't even know about Fire Flow out of the IFC. Had a warehouse storing rubber that burned, it was a 12 hour ground attack, municipal supply was woefully insufficient for such an event. FD had to draft from the harbor. What we often forget is that sprinklers may be the first responders but behind that will be humans who have to actually do the dangerous work of extinguishing a larger fire. When we neglect water supplies and only see what's required in NFPA 13, we do them and the owner a great disservice. Yes tanks and pumps cost money that may never be recouped, but a total loss is pretty hard to overcome as well. Craig L. Prahl Fire Protection Group Lead/SME CH2MHILL Lockwood Greene 1500 International Drive Spartanburg, SC 29303 Direct - 864.599.4102 Fax - 864.599.8439 CH2MHILL Extension 74102 [email protected] -----Original Message----- From: Sprinklerforum [mailto:[email protected]] On Behalf Of Dan Arbel Sent: Monday, February 22, 2016 11:57 AM To: [email protected] Subject: RE: Grinnell F991 Dear All, Anybody knows why NFPA 13- Edition 2016 increased the required duration of ESFR protection of rubber tires storage from 1 hour (Edition 13) to 3 hours? Regards Dan Arbel Risk Engineering T: 972-4-8243337 F: 972-4-8243278 M: 972-52-6611337 Mail: [email protected] W: www.riskmanage.com _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
