Hello George, With the purpleK you might as well dump the water on it. All extinguisher powders are corrosive to circuit boards in the presence of a little humidity.
Thursday, April 5, 2007, 4:47:30 PM, you wrote: > We try to go with high-temp concealed heads, too- > K.I.S.S. instead of DIPA, or a basketball of halon/purpleK with a spkr stuck > in it (CeaseFire). > Recently bid a doozie- 15,000 sf emergency services bldg for the county. > 2 DIPA, one rm 9 hds, 1 was 12. FM200 in another, wet throughout the rest. > Now the good part- dry uprights were shown to protect the attic- they'd be > 20' long, and pitched to be perpendicular to the 4/12 roof!!! > Realizing their mistake, they issued an addendum to provide a dry-pipe > system in the attic, except DIPA above the 3 rooms listed above. 4 systems > in the attic! > Icing on the cake- tank buried outside, atmospheric vent at grade, water to > ignore gravity and jump up into the VI pump. Naturally we had to put a > transfer switch on it, since power (and the building) would be lost before > any water came out. > $22/sf and it wouldn't work (except the FM 200). Sealed by a PE. > Why would you stack kindling atop a bulletproof concept? > glc > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Chris Cahill > Sent: Thursday, April 05, 2007 4:25 PM > To: [email protected] > Subject: RE: Server Closet > And these same nit wits don't care about sinks and toilets, severe weather, > roof leaks, electrical issues, floods and all the other possible causes of > damage. When I ask if they considered all the other possible sources of > damage or interruption with fire or sprinklers being among the least > probable they usually put it in the new context and drop the issue. Or at > least stop pushing to spend the owner's money (vs. theirs) and compromise on > a concealer and high temp. > Bigger rooms with high value critical infrastructure for a mutli-million > business then maybe DIPA. But these are usually multiple redundant remote > systems and thus any one site is not important and they accept the risk all > 3 (or more) won't have problems at the same time. > I'm not sure what John Drucker means about IFC 904.2. But be careful about > substituting alternate agents for sprinklers. 904.2 ('00 ed.) last sentence > may mean if the sprinklers are not in the room (closet) it is an > unsprinklered building. The only exceptions are in 903.3.1.1.1 and I don't > see server rooms covered. At least the way I read it alternate agents are > not sprinklers. > Chris Cahill, P.E. > Fire Protection Engineer > Sentry Fire Protection, Inc. > > 763-658-4483 > 763-658-4921 fax > > Email: [EMAIL PROTECTED] > > Mail: P.O. Box 69 > Waverly, MN 55390 > > Location: 4439 Hwy 12 SW > Waverly, MN 55390 > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of > [EMAIL PROTECTED] > Sent: Thursday, April 05, 2007 2:22 PM > To: [email protected] > Subject: RE: Server Closet > The dry sidewall might appease them if all they were worried about was > an intermittent drip. What I hear more often is the fear of someone > busting the head and millions of gallons of water dumping into the > closet resulting in numerous IT personnel drownings and electronic > equipment getting wet and ruined. > 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 Tom > Duross > Sent: Thursday, April 05, 2007 3:15 PM > To: [email protected] > Subject: RE: Server Closet > Thanks. > One of my thoughts to offer them was a dry type sidewall. > I can get it set about 10" below the steel deck and still hide the pipe > above the corridor drop ceiling. > Maybe in a 360 degree rating? It would keep the water (wata) out of the > room. > Tom > Dual Interlock Pre-Action? > For one head in a closet? YIPERS! > DIPA?? > In my best Sherman: "Gee Mr. Peabody, what's that?" > Tom > Sounds like they're concerned with water damage and not mission > continuity. I would recommend a DIPA system. Either way, it seems like > a lot of effort for one sprinkler. > Inergen would likely require pressure relief venting. > Ray Schmid > I was wondering if I could get recommendations of advice to give a > client. > Their IT guy is bugging them about a head we put in a server closet. > It's just a 6' w x 3' deep closet with their rack and a little ductless > ac unit. > No raised floor, liebert or big ups equipment and certainly not sealed. > I offered high temp head but they're scared about water (wata). > Should I suggest total flooding inergen? Low temp rate of rise heat > detector? > I have to have an exhaust system installed with inergen, right? > I think they'd have to enclose the closet to keep in the gas. > Thanks, > Tom Duross > Go Red Sox > _______________________________________________ > 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) > _______________________________________________ > 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) -- Best regards, Charles Thurston Coastal mailto:[EMAIL PROTECTED] _______________________________________________ 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)
