No prob, Bob, Even though I am all grown up now, I still get earaches every now and then. And I still like going back and listening the advice of Mr. Marin and his friend Tommy every now and then. Dude.
It should be recognized that the above is my opinion .....and the NFPA should not come into this at all. Sincerely, Cecil Bilbo Academy of Fire Sprinkler Technology Champaign, IL 217.607.0325 www.sprinkleracademy.com [email protected] OUR STUDENTS SAVE LIVES!! > From: [email protected] > To: [email protected] > Subject: RE: Small Pre-action System > Date: Wed, 12 Feb 2014 22:16:34 -0700 > > Cecil, > Thanks for the input, I had figured all that out after asking the question. > The seventies and eighties were really, really bad to me. As one song from > that day said, "My momma try to talk to me she try to tell me how to live, > but I don't listen because my head is like a sieve". Like I said, really > bad. LOL. Anyway I do appreciate the help. > > > Thank you, > > Bob Knight, CET III > 208-318-3057 > www.firebyknight.com > > -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of > Sprinkler Academy - C Bilbo > Sent: Wednesday, February 12, 2014 6:43 PM > To: [email protected] > Subject: RE: Small Pre-action System > > > Hi Bob, > You need 7 psi as a minimum (gauge pressure, dude...) on Double- and > Non-Interlock systems. (you are counting on the sprinkler activation before > the valve will operate, thus minimum 7 psi on the head itself...) You have > to supervise the piping on systems more than 20 sprinklers. Supervisory air > is sometimes only ounces, but as you may already see, that would only be on > a single interlock system. > Hope this is helpful info. > It should be recognized that the above is my opinion as a member of the > NFPA, and has not been processed as a formal interpretation in accordance > with the NFPA Regulations Governing Committee Projects and should therefore > not be considered, nor relied upon, as the official position of the the > NFPA, nor any of their technical committees. > > Sincerely, > > > Cecil Bilbo > Academy of Fire Sprinkler Technology > Champaign, IL > 217.607.0325 > www.sprinkleracademy.com > > [email protected] > > > > OUR STUDENTS SAVE LIVES!! > > > > > From: [email protected] > > To: [email protected] > > Subject: Small Pre-action System > > Date: Wed, 12 Feb 2014 16:50:36 -0700 > > > > It's been years since I have designed a small (3 sprinklers) single > > interlock pre-action system. I have a vague remembrance of not > > needing an air supply for a system this small, but I can find that > > info anywhere. I'm wondering if I'm confusing it with the requirement > > for supervision on systems over 20 sprinklers? Or, is this where the > > 7 psi limitation comes in? Atmospheric pressure is something like > > 14.7 psi so the 7 psi limit is meet? > > > > Dazed and confused in Idaho, > > > > Thank you, > > > > Bob Knight, CET III > > 208-318-3057 > > www.firebyknight.com > > > > > > > > > > _______________________________________________ > > Sprinklerforum mailing list > > [email protected] > > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkl > > er.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
