Hello Craig, Kitchen hoods procted to NFPA 17A standard are now UL300 and are a wet chemical for the appliance protection and have been for a few years. Yes Dry chem is still allowed by NFPA 17A for the duct and plenum BUT the manufactures do not allow that combo anymore.
Friday, October 23, 2009, 12:01:03 PM, you wrote: > See that makes no sense. In kitchen equipment hoods it's usually always > some kind of DC or CO2, never water. > Craig L. Prahl, CET > Fire Protection Specialist > Mechanical Department > CH2MHILL > Lockwood Greene > 1500 International Drive > PO Box 491, Spartanburg, SC 29304-0491 > Direct - 864.599.4102 > Fax - 864.599.8439 > [email protected] > http://www.ch2m.com > -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of Fletcher, Ron > Sent: Friday, October 23, 2009 11:57 AM > To: [email protected] > Subject: RE: Report: Antifreeze sprinkler system may > havecontributedtofatalexplosion > It's vegetable oil. > -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of > [email protected] > Sent: Friday, October 23, 2009 8:55 AM > To: [email protected] > Subject: RE: Report: Antifreeze sprinkler system may > havecontributedtofatalexplosion > If the oil is not miscible, good luck with that scheme. What did the > insurer use as the basis for that idea? > Typically for oil quenching or dip tanks or similar you would use local > app. DC or Foam or maybe CO2 depending on conditions and MSDS data. > Craig L. Prahl, CET > Fire Protection Specialist > Mechanical Department > CH2MHILL > Lockwood Greene > 1500 International Drive > PO Box 491, Spartanburg, SC 29304-0491 > Direct - 864.599.4102 > Fax - 864.599.8439 > [email protected] > http://www.ch2m.com > -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of Fletcher, Ron > Sent: Friday, October 23, 2009 11:45 AM > To: [email protected] > Subject: RE: Report: Antifreeze sprinkler system may have > contributedtofatalexplosion > It isn't a very thin layer of oil. We are doing 4 fryers that are 6 ft wide > by 18 ft > long and hold about 250 gallons of oil at 325F. They run potato chips through > on a > conveyor. I'm not sure but I think the oil is at least 4-6 inches deep. I > even have a > letter from an FM type insurance company confirming the water deluge for the > fryers. > One of my concerns was amount of free board in the fryers. At about 150 gpm > we will > over flow the free board in a couple minutes. Then everything goes to the > trench drain. > We priced deluge, LP CO2 and Hifog. Deluge was least expensive, CO2 double > the cost of > deluge and mist was double the cost of CO2. The owner chose deluge. > Ron Fletcher > Aero Automatic > Phoenix, AZ > -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of Roland Huggins > Sent: Friday, October 23, 2009 7:40 AM > To: [email protected] > Subject: Re: Report: Antifreeze sprinkler system may have > contributedtofatalexplosion > that's for a flat surface (thin layer of oil) verses a pan of oil (or deep > aft fryer) > Roland > On Oct 23, 2009, at 5:51 AM, Fletcher, Ron wrote: >> Interesting video. Have you seen FM Data Sheet 7-20 Oil Cookers? It >> says to put a deluge system discharging at 0.5 gpm per sqft over the >> hot oil surface. >> Ron Fletcher > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum > For Technical Assistance, send an email to: [email protected] > To Unsubscribe, send an email > to:[email protected] > (Put the word unsubscribe in the subject field) > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum > For Technical Assistance, send an email to: [email protected] > To Unsubscribe, send an email > to:[email protected] > (Put the word unsubscribe in the subject field) > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum > For Technical Assistance, send an email to: [email protected] > To Unsubscribe, send an email > to:[email protected] > (Put the word unsubscribe in the subject field) > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum > For Technical Assistance, send an email to: [email protected] > To Unsubscribe, send an email to:[email protected] > (Put the word unsubscribe in the subject field) > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum > For Technical Assistance, send an email to: [email protected] > To Unsubscribe, send an email to:[email protected] > (Put the word unsubscribe in the subject field) -- Best regards, Charles Thurston Coastal Fire Protection Coastal mailto:[email protected] _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: [email protected] To Unsubscribe, send an email to:[email protected] (Put the word unsubscribe in the subject field)
