Thanks, my thoughts are the same, but wanted to see how the rest interpreted the code, as it is a bit ambiguous.
Another question on spray booths. This is a downdraft booth. The booth floor will be a open mesh steel grill, with a concrete air plenum below it. The air from the booth will exhaust into the air plenum below floor level and up thru' an exhaust duct. My question is will the air plenum below the floor level, have to be sprinklered, based on a open grate flooring, over 4 feet wide? Or not sprinklered, based on over 70% open, open-grid ceiling? If required to be sprinklered, and the space is less than 3 feet high, will combustible concealed space sprinklers be required. The space is non-combustible and the quick response CC heads are not listed for extra hazard applications. Will that suffice to argue for using standard sprinklers, although the spray pattern may not be optimal? Tony -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Ron Greenman Sent: November 10, 2010 4:11 PM To: [email protected] Subject: Re: Paint spray booth One for all. The purpose is the same as a for a cooking line with water. To shut down the sub-system for head changing (scheduled maintenance or emergency maintenance) without needing to shut down and drain the entire system. You could possibly get push back from an AHJ wanting one per hood but I'd argue my point and then if that failed argue to avoid a separate one for mixing room. On Wed, Nov 10, 2010 at 2:54 PM, A.P.Silva <[email protected]> wrote: > NFPA 13, 2007 section 21.4.1.5 : The sprinkler system for each spray > area and mixing room shall be controlled by a separate, listed > indicating valve(s), operable from the floor. > > I have two spray booths and a mixing booth side by side. Can one valve > supply the three booths or are three valves required, one per booth? > > Tony > > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum > > For Technical Assistance, send an email to: [email protected] > > To Unsubscribe, send an email > to:[email protected] > (Put the word unsubscribe in the subject field) > -- 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: AFSA, SFPE, ASCET, NFPA, NFSA, AFAA, ASEE, NIBS, WSAFM, WFC They are happy men whose natures sort with their vocations. -Francis Bacon, essayist, philosopher, and statesman (1561-1626) _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: [email protected] To Unsubscribe, send an email to:[email protected] (Put the word unsubscribe in the subject field) _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: [email protected] To Unsubscribe, send an email to:[email protected] (Put the word unsubscribe in the subject field)
