And perhaps you let it go since the change of heads is for remediation of another problem, and so that that remediation does not cause another problem. When talking about the changes in demand basis calcs the heads are the same, only the numbers have been changed to be more conservative. As good as it would be to update calcs and upgrade the system if necessary, that might be an onerous requirement. reusing the old heads though is a different matter as we've found that taking heads out and replacing often causes damage to the heads from over-stressing.
On Thu, Feb 28, 2013 at 8:54 AM, John O'Connor <[email protected]> wrote: > The facility was a high-rise residential occupancy, designed to NFPA-13. > Heads were QR semi-recessed chrome pend, K=5.6, ½" orifice, 155°. We > replaced with same, but used 286° for a week or two until remediation was > complete. No design change at all, only downside to entire project would > have been a short time delay to fuse temperature should a fire occur in the > interim. > John O'Connor > > -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of Cahill, > Christopher > Sent: Thursday, February 28, 2013 9:54 AM > To: [email protected] > Subject: RE: Bedbugs > > How do you replace heads based on a minimum density that no longer exists? > Speaking of the residential heads before the 0.05 minimum of today? Sounds > like a few nightmares having to re-calc and replace piping in some > circumstances? > > Chris Cahill, PE* > Senior Fire Protection Engineer, Aviation & Facilities Group Burns & > McDonnell > 8201 Norman Center Drive > Bloomington, MN 55437 > Phone: 952.656.3652 > Fax: 952.229.2923 > [email protected] > www.burnsmcd.com > > Proud to be one of FORTUNE's 100 Best Companies to Work For *Registered in: > MN > > > -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of John > O'Connor > Sent: Thursday, February 28, 2013 9:51 AM > To: [email protected] > Subject: RE: Bedbugs > > We had been involved in the Bed-bug remediation about two years ago. On day > one we changed all heads to be subject to 175° heat-up to high temp heads, > if I remember correctly, used 286°. They did the heat remediation, and > after all the bugs are gone, we went back and replaced all heads with the > original. Worked pretty well. > John O'Connor > National Fire Sprinklers, Nashville TN > > -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of Ford, > Charles > Sent: Thursday, February 28, 2013 8:17 AM > To: [email protected] > Subject: RE: Bedbugs > > Ok, new issue (to me) Customer (sorta a funded group retirement home) has > bedbug problem. Bedbug exterminator has been hired. The process is to > isolate and heat the rooms (2 per day) to about 175 degrees F with special > heaters and therefore cook the bugs and their eggs. The property is > sprinklered. Sprinkler contractor has been hired to drain the system, > remove > and plug heads in 2 rooms and refill. End of day, restore the system. > Repeat process 17 times. > Has anybody dealt with this? > Is there a better way. > Is there a cheaper way? > > > 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 > > 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://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum > > ----- > No virus found in this message. > Checked by AVG - www.avg.com > Version: 10.0.1430 / Virus Database: 2641/5636 - Release Date: 02/27/13 > > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum > > ----- > No virus found in this message. > Checked by AVG - www.avg.com > Version: 10.0.1430 / Virus Database: 2641/5638 - Release Date: 02/28/13 > > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum > -- 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) -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://fireball.firesprinkler.org/mailman/private/sprinklerforum/attachments/20130228/12fc975c/attachment.html> _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum
