I would recommend to everyone the website www.nfpa.org/antifreeze. There is a lot of good information and a video by Matt Klaus that discusses the antifreeze story should be helpful.
This leads me to the risk assessment. There were some very interesting test results from the various tests of sprinklers in various scenarios with different heights, pressures, orifice size etc. A risk assessment would allow you to take these results and apply them to a particular site. This of course would have to be approved by AHJ. A PE is not required but I would recommend an FPE who understands the tests results. Happy winter to all...... Top Myers RelMark Group 961 Pottstown Pike Chester Springs, PA 19425 610-321-2415 X-219 Cell 610-952-0965 [email protected] -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Jay Stough Sent: Monday, January 27, 2014 1:58 PM To: Sprinkler Forum Subject: NFPA 25 & Antifreeze I was just rereading NFPA 25 (2014) 5.3.4 and specifically 5.3.4.2.1 and if I am reading it correctly, if the antifreeze is a type that is not acceptable, it must be drained and replaced. But if you look at 5.3.4.2.1, there are three criteria that you have to meet in order to use the premixed antifreeze, including a risk assessment. Has anyone done this risk assessment as shown in the annex? -- *Jay Stough* SET, CFPS _______________________________________________ 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
