go to your library and look at your back issue for ROP's and ROC's on 13. It has been over 6 years so I am a little weak on the specifics but it was presented that an antifreeze solution can cause a slight increase in the rate of heat release over a gas burner. That was when the restriction on antifreeze with an ESFR system was implemented. It is not applicable to spry sprinklers. Use of 100% may be an issue. Hydraulics would certainly be a tad more demanding (keeping in mind that you MUST use Darcy-Weisbach) and converting the K-factor would be required (and a challenge since it is still a mess in the ROC). Why are they not using something like 60%? Let me rephrase that, why are you not telling them to use the appropriate minimum concentration?
Roland On Apr 21, 2009, at 3:44 AM, Todd Williams wrote: > There have been some rumors floating around about antifreeze > solutions and I would like to know what is fact and what is fantasy. > NFPA 13 (2007) references "The potential effectiveness of antifreeze > and water mixtures controlling a fire has come into question.....". I > have on FM Global rep (whose middle initials are BS) tell me that > antifreeze solutions are flammable (not combustible, but flammable). > What is the real poop? I am getting several calls from people wanting > to convert wet systems to either dry or antifreeze in vacant > spaces/buildings so they don't have to heat them. > > Todd G. Williams, PE > Fire Protection Design/Consulting > Stonington, Connecticut > www.fpdc.com > 860.535.2080 > _______________________________________________ > Sprinklerforum mailing list > http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum > For Technical Assistance, send an email to: techsupp...@firesprinkler.org > > To Unsubscribe, send an email to:sprinklerforum-requ...@firesprinkler.org > (Put the word unsubscribe in the subject field) > _______________________________________________ Sprinklerforum mailing list http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: techsupp...@firesprinkler.org To Unsubscribe, send an email to:sprinklerforum-requ...@firesprinkler.org (Put the word unsubscribe in the subject field)
