That may be why it actuated - the fact that it is 30 years old. It sat at the top of an unairconditioned chute where all the environmental heat collects. It is subject to vibration day after day from trash banging down the chute. It's old. Fatigue sets in. The fusible link just gave up.
John Hoffman P.E. | Fire Protection Engineer | Facility Engineering Services, KCP, LLC - Burns & McDonnell Engineering | National Nuclear Security Administration's Kansas City Plant | Operated by Honeywell FM&T | 2000 E. 95th St | Kansas City, MO 64131 | ph 816-997-7213 | [email protected] |------------> | From: | |------------> >----------------------------------------------------------------------------------------------------------------------------------------| |[email protected] | >----------------------------------------------------------------------------------------------------------------------------------------| |------------> | To: | |------------> >----------------------------------------------------------------------------------------------------------------------------------------| |[email protected] | >----------------------------------------------------------------------------------------------------------------------------------------| |------------> | Date: | |------------> >----------------------------------------------------------------------------------------------------------------------------------------| |01/06/2012 01:13 PM | >----------------------------------------------------------------------------------------------------------------------------------------| |------------> | Subject: | |------------> >----------------------------------------------------------------------------------------------------------------------------------------| |Re: Trash Chute Question | >----------------------------------------------------------------------------------------------------------------------------------------| |------------> | Sent by: | |------------> >----------------------------------------------------------------------------------------------------------------------------------------| |[email protected] | >----------------------------------------------------------------------------------------------------------------------------------------| That has been one of my theories. My only question is what caused the head to go off now. It's been that way for 30 years and they've never had any problems. I'm still confused . In a message dated 1/6/2012 9:12:49 A.M. Eastern Standard Time, [email protected] writes: Sounds like a "cleanout head", that should've been connected to domestic water supply, was incorrectly connected to the fire system during original construction. The head should be an open head, controlled by a valve at the top of the shaft. It shouldn't set off the pump or fire alarm. On Wed, Jan 4, 2012 at 2:46 PM, <[email protected]> wrote: > I had a sprinkler head go off at the top of a trash chute today. The head > is in an unreachable position inside the middle the top of the chute. It > is > also being fed off some kind of contraption I have never seen. Some type > of large baffle with a 1" street elbow coming off of it and something in > the > middle with a lever. There are heads on every floor, just inside the trash > chute doors, which is common. Does anybody know what type of assembly this > is at the very top center of the chute? How can I possible change this > head > if I can't even get near it? I broke the 1" union feeding this contraption > which was located outside the chute. I just plugged it and need to figure > out where to go from here. Any help would be greatly appreciated. > Thanks, > Dave > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: < > http://fireball.firesprinkler.org/mailman/private/sprinklerforum/attachments/20120104/ae07e458/attachment.html > > > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum > -------------- next part -------------- An HTML attachment was scrubbed... URL: < http://fireball.firesprinkler.org/mailman/private/sprinklerforum/attachments/20120106/f7e15123/attachment.html > _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum -------------- next part -------------- An HTML attachment was scrubbed... URL: < http://fireball.firesprinkler.org/mailman/private/sprinklerforum/attachments/20120106/aaadd158/attachment.html > _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum
