I agree 100% Jim. On 8/23/07, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote: > Craig: > > I wasn't saying a pre-action sprinkler system instead of a wet pipe system. > My preference is a wet system with independent smoke sensors tied to the > fire alarm system. The only time I use pre-action is when the owner is > the nervous type. > > Otherwise, the water damage can be greater due to potential operation of > more heads due to the operational delay. > > Regards, > > James L.(Jim) Roberts, PE, SET > Fluor Corporation > 100 Fluor Daniel Drive - C104F > Greenville, SC 29607 > 864.281.5149 > 864.281.4916(Fax) > > > > > <[EMAIL PROTECTED]> > Sent by: > [EMAIL PROTECTED] > To > prinkler.org > <[email protected]> > 08/23/2007 11:07 AM > cc > Please respond to > sprinklerforum > Subject > RE: Carbon > Dioxide System Discharge Time > > > > > > > > > > > > Can the room be occupied at any time either by service personnel or > other occasional operators? Typically the answer would be yes as all > equipment needs human intervention at some time. > > What Jim is saying is that a Pre-action sprinkler system would actually > be the best choice and the most cost effective with something like > FM-200 as the next choice instead of CO2. There are some serious life > safety issues you must consider when using CO2 in potentially occupied > spaces. > > > > Craig L. Prahl, CET > Fire Protection Group > 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.lg.com > > > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Reza > Esmaeili > Sent: Thursday, August 23, 2007 10:59 AM > To: [email protected] > Subject: Re: Carbon Dioxide System Discharge Time > > Jim, > I forgot to explain, the room doesn't have any operators at all, and > carbon dioxide is the best choice. > Thanks, > Reza > [EMAIL PROTECTED] wrote: > Reza: > > I would not recommend a CO2 system as it is potentially too dangerous. I > would consider a clean agent sytem per NFPA 2001. > > Hopefully, this is only a back-up to a wet pipe system, which is still > my favorite. > > Regards, > > James L.(Jim) Roberts, PE, SET > Fluor Corporation > 100 Fluor Daniel Drive - C104F > Greenville, SC 29607 > 864.281.5149 > 864.281.4916(Fax) > > > > > Reza Esmaeili > > Sent by: To > [EMAIL PROTECTED] [email protected] > prinkler.org cc > 08/23/2007 10:18 AM > Please respond to Subject > sprinklerforum Carbon Dioxide System Discharge Time > > > > > > > > > > > > Hi all, > For designing a total flooding high pressure carbon dioxide system in a > 3,500 cubic feet computer room with electrical equipment and cable runs, > I have specified my room as "Dry electrical hazard" with flooding factor > of > 0.083 lb/cubic.feet and 50% design concentration according to NFPA-12. > My questions are as below: > 1)- Is a computer room fire a deep seated fire? > 2)- NFPA 12 states that "For deep-seated fires, the design concentration > shall be achieved within 7 minutes, but the rate shall be not less than > that required to develop a concentration of 30 percent in 2 minutes." Is > it a problem if the total discharge time would be only 1 minute for this > case? > Many thanks for your help in advance. > Reza > > > --------------------------------- > Pinpoint customers who are looking for what you sell. > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum > > To Unsubscribe, send an email > to:[EMAIL PROTECTED] > (Put the word unsubscribe in the subject field) > > ------------------------------------------------------------ > The information transmitted is intended only for the person or entity to > which it is addressed and may contain proprietary, business-confidential > and/or privileged material. > If you are not the intended recipient of this message you are hereby > notified that any use, review, retransmission, dissemination, > distribution, reproduction or any action taken in reliance upon this > message is prohibited. If you received this in error, please contact the > sender and delete the material from any computer. > > Any views expressed in this message are those of the individual sender > and may not necessarily reflect the views of the company. > ------------------------------------------------------------ > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum > > To Unsubscribe, send an email > to:[EMAIL PROTECTED] > (Put the word unsubscribe in the subject field) > > > > --------------------------------- > Looking for a deal? Find great prices on flights and hotels with Yahoo! > FareChase. > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum > > To Unsubscribe, send an email > to:[EMAIL PROTECTED] > (Put the word unsubscribe in the subject field) > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum > > To Unsubscribe, send an email to:[EMAIL PROTECTED] > (Put the word unsubscribe in the subject field) > > ------------------------------------------------------------ > The information transmitted is intended only for the person > or entity to which it is addressed and may contain > proprietary, business-confidential and/or privileged material. > If you are not the intended recipient of this message you are > hereby notified that any use, review, retransmission, dissemination, > distribution, reproduction or any action taken in reliance upon > this message is prohibited. If you received this in error, please > contact the sender and delete the material from any computer. > > Any views expressed in this message are those of the individual > sender and may not necessarily reflect the views of the company. > ------------------------------------------------------------ > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum > > To Unsubscribe, send an email to:[EMAIL PROTECTED] > (Put the word unsubscribe in the subject field) >
-- Ron Greenman at home.... _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum To Unsubscribe, send an email to:[EMAIL PROTECTED] (Put the word unsubscribe in the subject field)
