NFPA 25-2011 10.3.4.3.1.1 Where the nature of the protected property is such that water cannot be discharged, the nozzles shall be inspected for proper orientation and the system tested with air to ensure that the nozzles are not obstructed.
10.3.4.3.2 Where obstructions occur, the piping and nozzles shall be cleaned and the system retested. Larry Keeping, P.Eng. Professional Loss Control 3413 Wolfedale Road, Suite 6 Mississauga, Ontario L5C 1V8 Phone: 905-949-2755, ext. 204 Fax: 905-949-1752 E-mail: [email protected] -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Jim Davidson Sent: June-21-13 4:45 PM To: [email protected] Subject: RE: air test for open head deluge system Thank you for adding some laughter on Friday. NFPA 25 Paragraph 11.3.2.6 Discharge Patterns. 11.3.2.6.1 The discharge patterns from all of the open spray devices shall be observed to ensure that patterns are not impeded by plugged discharge devices and to ensure that discharge devices are correctly positioned and that obstructions do not prevent discharge patterns from covering surfaces to be protected. Requires the system to be flow tested annually, there is no air test in NFPA 25 for a deluge foam water system. The word observed means to look at the water discharge through the nozzle the wording "discharge patterns from all of the open spray devices shall be observed to ensure that patterns are not impeded" is the criteria needing to be review which means water of water/foam solution. Have a fire safe day. Regards Jim DAVIDSON ASSOCIATES Fire Protection Engineering P. O. Box 4010 Code Consultants Greenville, DE 19807-0010 Medical Gas Systems Engineering (302) 994-9500 Fax (302) 234-1781 CONFIDENTIALITY This report and any attachments are confidential and also may be privileged. If you are not the named recipient, or have otherwise received this report in error, please destroy the report, notify the sender immediately, and do not disclose its contents to any other person, use them for any purpose, or store or copy them in any medium. Thank you for your cooperation. -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of [email protected] Sent: Friday, June 21, 2013 4:31 PM To: [email protected] Subject: Re: air test for open head deluge system Best laugh I've had all day. Thank you, Brad. bv ----- Original Message ----- From: "Brad Casterline" <[email protected]> To: [email protected] Sent: Friday, June 21, 2013 12:59:17 PM Subject: RE: air test for open head deluge system maybe they hare test-- the one where you check for rabbits in the bladder tank? -----Original Message----- From: John Denhardt [mailto:[email protected]] Sent: Friday, June 21, 2013 2:51 PM To: [email protected] Subject: Re: air test for open head deluge system Agree. Something is off. Sent from my Motorola Smartphone on the Now Network from Sprint! -----Original message----- From: Ron Greenman <[email protected]> To: "[email protected]" <[email protected]> Sent: Fri, Jun 21, 2013 15:46:42 EDT Subject: Re: air test for open head deluge system These questions intrigue me because it's about what might be an arcane application. What I found was that an open head deluge system is essentially just a type of sprinkle system in 25 and so tested the same as any other. When it starts being defined is something having to do with a special application (water-spray, foam, etc.) then there are additional operational tests. So when you look at deluge it sends you various places within 25. One took me the ultra high speed stuff. Another to water spray. And yes there is one for foam and it sent me to the foam section for plain old sprinkler systems. In no case did I run into the air test tree while wandering around the NFPA 25 forest. Have your client ask this other guy for the reference that says this is a test, much less a mandatory one. Maybe he was saying he needs to test the air compressor...oh,..wait..., open head system?...Air compressor?...Something isn't making sense. On Fri, Jun 21, 2013 at 12:04 PM, Martinez, Dewayne < [email protected]> wrote: > I have a owner calling me because another contractor is stating that > he needs to have an air test done on his open head foam deluge system. > > I have never heard of this and was wondering what the test entails. > Any takers? > > Thanks, > > > > Dewayne Martinez > > Fire Protection Design Manager > > Total Mechanical > > 414-406-5208 (c) 262-522-7110 (w) 262-522-1006 (f) > > > > _______________________________________________ > 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 _______________________________________________ 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 _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
