I revert to my question: If the FDC is for sprinklers only (not a sprinkler/standpipe combo) has any fire guy reading ever pumped into one? If a valve were closed or a line break in the lead-in would you pump into one or direct all water from the pumper to hose lines? Is using, not just hooking-up to, the FDC a standard fire-ground tactic?
"Representatives and direct Taxes shall be apportioned among the several States which may be included within this Union, according to their respective Numbers, which shall be *determined by adding to the whole Number of free Persons, including **those bound to Service for a Term of Years, and excluding Indians not taxed, **three fifths of all other Persons* ." Article 1, Section 2, Paragraph 3 of the United States Constitution<http://en.wikipedia.org/wiki/United_States_Constitution> Still there but pretty much just ink on paper. On Fri, Jul 12, 2013 at 7:25 AM, <[email protected]> wrote: > But what if the underground is a loop and has section valves plus the > riser valves? The Phoenix Fire Dept. makes us put a FDC on each manifold > instead of at the fire pump. The pump supplies the underground loop for the > entire building with multiple lead ins. There are sectional gate valves in > the loop, there is a gate valve in each underground leadin, and there are > gate valves in each riser on a manifold. Phoenix says we can't have any > gate valves between the FDC and the "system" gate valves. They read > 8.17.2.4.3 and stop there. As far as the PFD is concerned 8.17.2.4.4 > doesn't apply. > > What do you guys think? Can there be multiple gate valves between the FDC > and sprinkler systems? > > Ron F > > -----Original Message----- > From: [email protected] [mailto: > [email protected]] On Behalf Of Charles > Thurston > Sent: Thursday, July 11, 2013 3:27 PM > To: [email protected] > Subject: Re: FDC Arrangement > > Hello All, > > I tend to use these for these situations 8.17.2.4.4 is the key to them. > > 8.17.2.4.2 For single systems, the fire department connection shall be > installed as follows: > > (1) Wet system - on the system side of system control, check, and alarm > valves (see Figure A.8.16.1.1) > (2) Dry system - between the system control valve and the dry pipe > valve > (3) Preaction system - between the preaction valve and the check valve > on the system side of the preaction valve > (4) Deluge system - on the system side of the deluge valve > > 8.17.2.4.3 For multiple systems, the fire department connection shall be > connected between > the supply control valves and the system control valves. > > 8.17.2.4.4* The requirements of 8.17.2.4.2 and 8.17.2.4.3 shall not apply > where the fire department connection is connected to the underground piping. > > > > > > > -- > Best regards, > Charles mailto:[email protected] > > _______________________________________________ > 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 > -- Ron Greenman Instructor Fire Protection Engineering Technology Bates Technical College 1101 So. Yakima Ave. Tacoma, WA 98405 [email protected] http://www.bates.ctc.edu/fireprotection/ 253.680.7346 253.576.9700 (cell) Member: ASEE, SFPE, ASCET, NFPA, AFSA, NFSA, AFAA, NIBS, WSAFM, WFC, WFSC They are happy men whose natures sort with their vocations. -Francis Bacon, essayist, philosopher, and statesman (1561-1626) _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
