I can't speak for all of the testing, but I know that when they were doing full scale testing on the first QR sprinklers, the pressures and flows were controlled by a computer. During the actual test the computer held the pressure and flow to 7 psi at 15 gpm and as each sprinkler activated the computer ramped up the flow and pressure to maintain the minimum operating conditions at each sprinkler. In most cases 4 - 5 sprinkler controlled the fire. In one case the computer got behind by about .5 seconds, in that test over 20 sprinklers were activated and they stopped the test. They reran the test with sprinklers from the same manufacturer and only 5 sprinklers activated. This was back in 90, 91 and I'm not sure which testing facility it was at.
Richard Mote Rowe Sprinkler Systems Inc. -----Original Message----- From: Sprinklerforum [mailto:[email protected]] On Behalf Of Todd - Work Sent: Thursday, May 22, 2014 5:03 PM To: [email protected] Subject: Re: Overpressurizing Heads Maybe I am missing something, but when they do a full scale fire test, doesn't the first head that opens operate in that condition? Todd G Williams, PE Fire Protection Design/Consulting Stonington, CT www.fpdc.com 860-535-2080 (ofc) _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
