I've mostly used them when the underground was shut down. Adequate to supply the first one or two heads, if not pumped, and to operate flow switch. Much better than fire watch.
bv ----- Original Message ----- From: "Ron Greenman" <[email protected]> To: [email protected] Sent: Friday, July 12, 2013 7:55:52 AM Subject: Re: FDC Arrangement 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 _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
