------Original Message------ From: Dwight Havens <[email protected]> To: "[email protected]" <[email protected]>,"Dwight Havens" <[email protected]> Date: Saturday, August 10, 2013 6:19:50 AM GMT-7 Subject: Re: Trash Transfer Station
Tom, Just a clarification...I assume you mean to type 0.60/2000. And the placard indicated they were using an adjustment for a dry system, which in my book is a 30% design areas increase, bringing the system design to 0.60/2600 ft2. Of course the pump wasn't designed for this, or even the 0.60/2000, but was certainly adequate to control the fire that occurred with 8 heads operating at a minimum of 60 gpm. I think that it would be useful to capture actual system performance in these challenging storage fires, to provide feedback to the protection committee. Dwight ________________________________ From: Tom Duross <[email protected]> To: [email protected] Sent: Saturday, August 10, 2013 8:24 AM Subject: RE: Trash Transfer Station Todd- I spent a week on Nantucket after the 4th of July rebuilding a fire pump that ran all night from a fire and the crv didn't open. The facility sorts and packs single stream recyclables and barges them to the mob in NJ. Apparently they have a fire about once a month. Another contractor from Boston was there replacing all the heads in one building; K25, 100' spacing, dry system, curved roof 30' high. They put up cameras over the winter and banned smoking because they had footage of someone flicking one in after dumping their recycle bins. Most of the alarms went off in the wee hours of the morning so these fires had a while to develop. Most were contained but not extinguished. The above one that got me there the following day, 8 heads opened and the FD were still working on hot spots at 8 AM. It was in the building that contains the compressed plastics and paper waiting for the barge and wasn't loose. The placard said S2, .06/2000, dry adjustment. Bales stored in stacks to 25'. All machinery parked inside too. The design was a code cycle old. (Pump was only a 750.) TD My only concern was about the possibility of a deep seated fire such as in a pile of wood chips Todd G Williams, PE _______________________________________________ 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
