Funny. I thought it would be easy to find, but no, at least not in the 2011 edition. There's the 5-year hydro on dry sections (I think), and obstruction investigation triggers, but apparently the backflush isn't a scheduled maintenance thing.
On Wed, May 8, 2013 at 10:48 AM, Ford, Charles <[email protected]> wrote: > I have understood that back flushing of the FDC was a routine thing. Some > FDC checks have features the make it easier. Funny thing, I can't find it > referenced in 25. Is this a local (Philadelphia) thing? > > C. Burton Ford > NICET Certified IV > NFPA Certified Fire Protection Specialist > Cintas Fire Protection Inc > 1038 Conshohocken Rd > Conshohocken, PA 19428 > Tel 610-233-1400 > Fax 610-233-1401 > > -----Original Message----- > From: [email protected] [mailto: > [email protected]] On Behalf Of > [email protected] > Sent: Wednesday, May 08, 2013 12:49 PM > To: [email protected] > Subject: RE: Extending the design basis 15 ft. past...CALC? > > The intention is to provide a buffer zone between two dissimilar hazards > where the higher density extends 15 ft beyond the physical end of the > higher hazard. This way if a fire began at the edge of the higher hazard > area, the higher discharge sprinkler system is more likely to respond than > if you ended the sprinkler systems right at the imaginary line which > physically separates two different areas of use. > > It has nothing to do with where you place the hydraulic design area. > That's dependent on your layout. > > > Craig L. Prahl, CET > Fire Protection > CH2MHILL > Lockwood Greene > 1500 International Drive > Spartanburg, SC 29304-0491 > Direct - 864.599.4102 > Fax - 864.599.8439 > CH2MHILL Extension 74102 > [email protected] > > > > On May 8, 2013, at 9:14 AM, Ralphy Henderson <[email protected]> > wrote: > > > Hello, NFPA 13 quoted at bottom w/ the relevant code section: > > > > With the 15 ft. extending into the lesser hazard is the intention to > make this extended area part of the hydraulic design area (to be included > in calcs) or simply to extend the results of the calculations into this > area? My impression is the latter but I would like to see if people concur > with that. > > > > Thanks, > > RB > > > > > > > > > > > > NFPA 13: 2007 > > > > 11.1.2 > > > > (1) Where areas are not physically separated by a barrier or > partition capable of delaying heat from a fire in one area from fusing > sprinklers in the adjacent area, the required sprinkler protection for the > more demanding design basis shall extend 15 ft (4.6 m) beyond its perimeter. > > _______________________________________________ > > 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 > > This e-mail transmission contains information that is intended to be > confidential and privileged. If you receive this e-mail and you are not a > named addressee you are hereby notified that you are not authorized to > read, print, retain, copy or disseminate this communication without the > consent of the sender and that doing so is prohibited and may be unlawful. > Please reply to the message immediately by informing the sender that the > message was misdirected. After replying, please delete and otherwise erase > it and any attachments from your computer system. Your assistance in > correcting this error is appreciated. > > > _______________________________________________ > 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
