If I recall the committee's conversation on the proposal to add a master alarm, it was predicated on the issue of rampant theft of brass building system components in the electrical, plumbing and fire protection fields. The simplistic (simple-minded?) goal being that tampering with, vandalizing or attempting to steal parts of a system, or a mechanical failure should set off a notification alarm. So yes, I guess it's more supervisory in nature from the perspective of NFPA 14 but on a combined system it's prudent to help zone the fire sprinkler waterflow alarms both locally and off site.
The foregoing is my opinion only and does not necessarily represent the opinion or intent of the NFPA 14 Technical Committee on Standpipe and Hose Systems. Steve L. -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of rongreenman . Sent: Friday, October 11, 2013 2:40 PM To: [email protected] Subject: Re: Standpipe Flow Switch Sometimes the thing itself, because of what it is, can be misleading as ti it's intent. I think the "master" flow switch is the one used to read flow itself, while the individual floor flow switches are for locating where flow is, i.e., zoning. On another topic though I can see the utility for this on a combination pipe, but not the reasoning for a flow switch on just a standpipe, unless it's being used for monitoring, not alarm. My presumption is that if the standpipe is being used because of fire the FD is the one using it and they already know. A little background, Steve? On Fri, Oct 11, 2013 at 10:14 AM, Steve Leyton <[email protected]>wrote: > Waterflow alarms on fire sprinkler floor control manifolds would not > fulfill the requirement of 5.6.1, but neither is it intended that each > individual standpipe be furnished with an alarm. At least one "master" > flow alarm on every SYSTEM, except for manual dry. > > The foregoing is my opinion only and does not necessarily represent > the opinion or intent of the NFPA 14 Technical Committee on Standpipe > and Hose Systems. > > Steve Leyton > Protection Design & Consulting > San Diego, CA > > -----Original Message----- > From: [email protected] [mailto: > [email protected]] On Behalf Of Greg > McGahan > Sent: Friday, October 11, 2013 10:08 AM > To: [email protected] > Subject: Re: Standpipe Flow Switch > > Steve, > > Would the intent of 5.6.1 be met if there were flow switches on floor > control valves with the required inspector's test for them? > > It also says Standpipe System - not standpipe, so is the intent as it > sounds that one flow switch would satisfy the requirement for more > that one individual standpipe that are interconnected? > > > Thanks, > Greg > > > On Fri, Oct 11, 2013 at 11:58 AM, <[email protected]> wrote: > > > Thanks Steve. Guess I was doing some Friday speed reading. Going > > back to sleep now. > > > > Ron F > > > > -----Original Message----- > > From: [email protected] [mailto: > > [email protected]] On Behalf Of Steve > > Leyton > > Sent: Friday, October 11, 2013 9:56 AM > > To: [email protected] > > Subject: RE: Standpipe Flow Switch > > > > NFPA 14, 2010/2013, ยง5.6.1 - Waterflow alarm is required for every > > standpipe system except for manual dry systems. > > > > Steve L > > > > > > > > > > -----Original Message----- > > From: [email protected] [mailto: > > [email protected]] On Behalf Of > > [email protected] > > Sent: Friday, October 11, 2013 9:51 AM > > To: [email protected] > > Subject: Standpipe Flow Switch > > > > NFPA 14 has diagrams (A.7.1(a) '10 ed) of SP systems with pumps that > > have a flow switch shown in the supply pipe from the pump to the SP > > distribution main. I can't find anything in the body that requires a > > "master flow switch". Is the flow switch only required when there is > > a > pump? > > > > Ron F > > > > _______________________________________________ > > Sprinklerforum mailing list > > [email protected] > > > > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprin > > kl er.org _______________________________________________ > > Sprinklerforum mailing list > > [email protected] > > > > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprin > > kl > > er.org > > > > > > _______________________________________________ > > Sprinklerforum mailing list > > [email protected] > > > > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprin > > kl > > er.org > > > > > > -- > Greg McGahan > Living Water Fire Protection, LLC <http://www.livingwaterfp.com> > 1160 McKenzie Road > Cantonment, FL 32533 > 850-937-1850 > fax 850-937-1852 > _______________________________________________ > 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-firesprinkl > er.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
