Raining on equipment is one thing, you don’t anticipate an appreciable accumulation of rain filling the area and reaching conductors. Foam on the other hand being more three dimensional did accumulate up to several feet in the adjacent area.
Water spray wouldn’t have migrated into the adjacent area and wouldn’t have resulted in the foam cleanup problem but water spray can also be limited in its ability to do anything other than cooling if the electrical equipment contains combustible oil cooling material and the event was a result of a pool fire. Craig L. Prahl Fire Protection Group Lead/SME CH2M 200 Verdae Blvd. Greenville, SC 29607 Direct - 864.920.7540 Fax - 864.920.7129 CH2MHILL Extension 77540 [email protected] From: Sprinklerforum [mailto:[email protected]] On Behalf Of Ed Vining Sent: Monday, December 05, 2016 2:02 PM To: [email protected] Subject: Re: electrical bldg high ex foam in the news [EXTERNAL] Maybe conductivity of foam shorting out transformers? Or maybe not caused by foam, but continuing of cause of first transformer? Would a waterspray system have resulted in less overall damage? On Mon, Dec 5, 2016 at 10:45 AM, Michael Hill <[email protected]<mailto:[email protected]>> wrote: The more I think on this…..since the building is open to the weather, how would the foam cause the equipment in the other bay to explode? Mike Hill From: Sprinklerforum [mailto:[email protected]<mailto:[email protected]>] On Behalf Of [email protected]<mailto:[email protected]> Sent: Monday, December 05, 2016 1:19 PM To: [email protected]<mailto:[email protected]> Subject: RE: electrical bldg high ex foam in the news Nothing like designing for 300% of volume. Also no way to prevent foam from pouring into the unaffected portion of the bldg. probably resulting in the second explosion. Design fail on multiple accounts. The news clip didn’t reveal the open walled enclosure. It looked like a building with foam coming across the roof which made no sense. Here is another video from a drone, you can see the foam in the adjacent area where there was no initial event. https://www.youtube.com/watch?v=AH5W-BW0w2k Craig L. Prahl Fire Protection Group Lead/SME CH2M 200 Verdae Blvd. Greenville, SC 29607 Direct - 864.920.7540<tel:(864)%20920-7540> Fax - 864.920.7129<tel:(864)%20920-7129> CH2MHILL Extension 77540 [email protected]<mailto:[email protected]> From: Sprinklerforum [mailto:[email protected]] On Behalf Of Michael Hill Sent: Monday, December 05, 2016 12:18 PM To: [email protected]<mailto:[email protected]> Subject: RE: electrical bldg high ex foam in the news [EXTERNAL] That is what it is supposed to do, lots of foam. Did the foam contribute to the second explosion in the adjacent bay? Thanks for the link Ryan. Mike Hill From: Sprinklerforum [mailto:[email protected]] On Behalf Of Ryan Labrie Sent: Monday, December 05, 2016 12:06 PM To: [email protected]<mailto:[email protected]> Subject: RE: electrical bldg high ex foam in the news I saw a video of this on reddit yesterday, PECO power substation building in Philadelphia, PA. https://www.youtube.com/watch?v=hrl2cKzGMGs Ryan Labrie Fire Protection Designer Critical System Solutions, LLC 2830 Scherer Drive, Suite 300 St. Petersburg, FL 33716 Office: 727.209.5122<tel:(727)%20209-5122> Fax: 727.209.5126<tel:(727)%20209-5126> Cell: 813.394.3978<tel:(813)%20394-3978> Email: [email protected]<mailto:[email protected]> [CSS Logo] From: Sprinklerforum [mailto:[email protected]] On Behalf Of [email protected]<mailto:[email protected]> Sent: Monday, December 05, 2016 11:52 AM To: [email protected]<mailto:[email protected]> Subject: electrical bldg high ex foam in the news Over the weekend I saw a news report of a Philadelphia HI EX foam discharge which was reported as protecting an electrical sub-station I believe. Does anyone have any info on this? Craig L. Prahl Fire Protection Group Lead/SME CH2M 200 Verdae Blvd. Greenville, SC 29607 Direct - 864.920.7540<tel:(864)%20920-7540> Fax - 864.920.7129<tel:(864)%20920-7129> CH2MHILL Extension 77540 [email protected]<mailto:[email protected]> _______________________________________________ Sprinklerforum mailing list [email protected]<mailto:[email protected]> http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org -- Ed Vining 4819 John Muir Rd Martinez CA 94553 925-228-8792 Cell 925-787-0465
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