Ron, It's all in their mind. Hasn't anyone read about 'Global Warming'? Don't you know we are all going to die of extreme heat unless we are taxed to death first!
And for Mr. Muncy's benefit, be careful with the air tests! Cliff Whitfield, SET President Fire Design, Inc. Ph: 719-488-3479 cl...@fire-design.com www.fire-design.com -----Original Message----- From: sprinklerforum-boun...@lists.firesprinkler.org [mailto:sprinklerforum-boun...@lists.firesprinkler.org] On Behalf Of rongreenman . Sent: Tuesday, February 25, 2014 11:33 AM To: sprinklerforum@lists.firesprinkler.org Subject: Re: Air Testing CPVC Piping I think all you guys using 50 psi to test plastic are crazy. I also think that guys that pipe shop air in plastic are crazy. That said I know it's done all the time without mishap. Puff test for holes. Water test for pressure holding ability. And what the hell is a polar vortex. Sounds like Winter Blast 2014 (which may be appropriate for you Easies this year). On Tue, Feb 25, 2014 at 10:25 AM, Morey, Mike <mo...@bmwc.com> wrote: > NFPA 13 2010 > A.10.10.2.2.1 might be worth pointing out, specifically: > When systems having rigid thermoplastic piping such as CPVC are > pressure tested, the sprinkler system should be filled with water. The > air should be bled from the highest and farthest sprinklers. > Compressed air or compressed gas should never be used to test systems > with rigid thermoplastic pipe. > > I would avoid it if at all possible, and especially a pressure as high > as > 50 psi, you're making a plastic pipe bomb at that pressure. > > Mike Morey, CFPS, SET > Planner Scheduler/Designer > BMWC Constructors, Inc. > 1740 W. Michigan St, Indianapolis, IN 46222 > O: 317.651.0596 | C: 317.586.8111 > mo...@bmwc.com | www.bmwc.com > > ________________________________________ > From: sprinklerforum-boun...@lists.firesprinkler.org [ > sprinklerforum-boun...@lists.firesprinkler.org] on behalf of Richard > Mote [rich...@rowesprinkler.com] > Sent: Tuesday, February 25, 2014 12:46 PM > To: sprinklerforum@lists.firesprinkler.org > Subject: Air Testing CPVC Piping > > We have an AHJ requiring a 50 psi test on CPVC piping, we think that > is excessive, and have always used 20 psi max. I know the best > practice is to do a hydrostatic test, but thanks to the polar vortex > we are having freezing temperatures and the builder needs to close up > his walls. Right now we are looking for chapter and verse as to what > the maximum recommended pressure is for an air test. Have looked > through 3 different CPVC installation handbooks but the number is not > jumping out at me. The TYCO Residential Dry System runs 10 - 15 psi > pressure. Note: This is not a residential dry system we are trying to > air test a system so the drywall can go on. When the building gets the > heat turned on it will be a wet system. > > Richard L. Mote > Rowe Sprinkler Systems, Inc. > 7994 Route 522, Suite 1 > PO Box 407 > Middleburg, PA 17842 > P 570-837-7647 > F 570-837-6335 > > _______________________________________________ > Sprinklerforum mailing list > Sprinklerforum@lists.firesprinkler.org > > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkl > er.org _______________________________________________ > Sprinklerforum mailing list > Sprinklerforum@lists.firesprinkler.org > > 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 rgreen...@bates.ctc.edu 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) A problem well stated is a problem half solved. -Charles F. Kettering, inventor and engineer (1876-1958) _______________________________________________ Sprinklerforum mailing list Sprinklerforum@lists.firesprinkler.org http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org _______________________________________________ Sprinklerforum mailing list Sprinklerforum@lists.firesprinkler.org http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
