Chuck: There should be no problem installing these valves. I believe they should be supervised, as they control water to protected areas.
The problem with adding sectional valves to a system is that they are easily forgotten. The main cause of sprinkler system failure is the shut valve. Therefore, as a general rule, one should hesitate to add valves where they are not required. But if the owner wants them in place, I would suggest additional security - especially if they are going to be located in a concealed location (e.g. above a ceiling). Seals or locks seem appropriate in addition to the electrical supervision. Mark A. Sornsin, PE Fire Protection Engineer Ulteig Engineers, Inc. Fargo, ND 701.280.8591 [EMAIL PROTECTED] -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of RFI - Bismarck Sent: Monday, March 17, 2008 5:05 PM To: [email protected] Subject: a non-typical type installation question... Have a fairly small facility (<60 Heads); typical "U" shaped building; the owner is requesting that prior to going into each "wing" a ball valve be placed to be able to shut down that side of the wing for maintenance purposes... the AHJ - who also wears the hat as the buildings' maintenance super' -was contacted by the owner to request this scenario - to which he (AHJ) has approved. Couple questions I have after reading 13R 2007; 5.2.12.4.4 and 6.7.1.2: (1) Acceptable installation then? (I'm leaning towards "yes") (2) Supervised? (3) Non-supervised? Only reason for #2 & #3 is because they (NFPA sections) don't 'compliment' one another - yet they don't "contradict" either. 5.2.12.4.4 states that you can use one... doesn't state that it needs to be supervised where 6.7.1.2 states otherwise... Any help or insight would be appreciated!! RFI Chuck No virus found in this outgoing message. Checked by AVG. Version: 7.5.519 / Virus Database: 269.21.7/1332 - Release Date: 3/17/2008 10:48 AM _______________________________________________ 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)
