Reasoning from a non-sprinkler proficient PE? That's self explanatory. I haven't the foggiest idea why one would want it. As I said won't return calls, bid due shortly. We're talking 10 PC's in a training classroom, college like, 2400 sq.ft. Then there is a second PA in a comm. room that is 300 sq.ft. which I imagine is the servers to run said PC's and connect to the WWW. Why both rooms aren't on the same PA I don't know that either. Suspect PE is working of % of contract. Also, local gov't work isn't allowed to be cheap so when wet system prices fall something has to be added so we last few taxpayers get our moneys worth? This ain't no billion dollar server farm. There is also a clean agent someplace but I don't know where and not my scope of work so I really don't care. But adds to the oddity of it all.
Spec reads like a FM-200 or the like but is clearly for the double interlock PA. "1. Upon activation of smoke detector energize predischarge strobe and bell. 2. Activate a time delay sequence and enable abort sequence. 3. Abort station shall reset the 30 second time delay." Now technically he never specs an electric/pneumatic. Could always do pneumatic/pneumatic to solve the problem. I don't like it either but before I start a fight I want to know which side I'm on. (And just because I might be on the losing side code wise doesn't mean I won't start it anyway). 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: Monday, April 06, 2009 4:29 PM To: [email protected] Subject: RE: Pre-action abort Question one: Why? Question two: At what stage of system response do you want to abort? There is no mention anywhere in NFPA 13 about the allowance or disallowance of an abort switch. I just can't see where anyone would be quick enough to get to it if something in the system started an operation anyway. With all the delays already built in to a double interlock system what in the world could another interruption accomplish? I would not be in favor of it. But for the sake of curiosity, what's the application and reasoning behind the question? 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 Chris Cahill Sent: Monday, April 06, 2009 5:15 PM To: [email protected] Subject: Pre-action abort Can one have an abort button on a double interlock pre-action (electric/pneumatic)? I'm assuming it would be like on a clean agent system. PE hasn't got back to us (don't really expect him to, not a surprise). 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 _______________________________________________ Sprinklerforum mailing list http://lists.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 http://lists.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 http://lists.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)
