Gayle - if the systems are within 1700 feet of a non potable water source they are supposed to be RPZs anyway. or if you have A-F. Also be wary of the installation location, a RPZ can not be placed below grade regardless where the DCV is unless a gravity drain capable of handling the discharge of the device when it fouls is present. Just because a DCV is installed in a pit and has to be changed out does not allow you to place the RPZ in the pit. DCV and RPZ are NOT the same protection. Sounds like you need to ask politely for the Code section that is being referenced so that you might have it handy for the next project. If it can be produced, comply.
Garth ----- Original Message ----- From: "GAYLE KNOWLES" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Tuesday, October 09, 2007 1:26 PM Subject: RE: Double-check vs RPs Thanks for the info. I guess what I'm looking for is something that states that all these existing double-check backflows are not a threat and replacing them all with RPZ is a lot of unnecessary extra cost for the owner. As Matt stated, it may very well be a losing argument as long as it has been "adopted". The info will be used to fight to keep the existing double-checks.> Date: Tue, 9 Oct 2007 14:10:20 -0400> From: [EMAIL PROTECTED]> To: [email protected]> Subject: RE: Double-check vs RPs> > Gayle, Perhaps our regulations in New Jersey would be of assistance.> > John Drucker, Fire Protection Subcode Official, NJ> ------------------------------------------------------------------------ > ------> > STATE OF NEW JERSEY> > DEPARTMENT OF ENVIRONMENTAL PROTECTION> > BUREAU OF SAFE DRINKING WATER> > SAFE DRINKING WATER ACT REGULATIONS> > (N.J.A.C. 7:10)> > ADOPTED: November 4, 2004> > 7:10-10.4 Installation> > (a) The approved physical connection installation shall be> installed on the customer's side of the water meter on the> pipe(s) conveying the water from the public community water> system into a facility, shall be installed as close to the meter as> is reasonably practicable, and shall be prior to any other> connection, unless such other connection is also protected by> means of an approved physical connection installation. For a> fire service line, the approved physical connection installation> shall be installed prior to the alarm check and siamese> connection.> (b) The approved physical connection installation shall be> installed so as to allow easy access, with adequate space for> maintenance, inspection, and testing. No part of the device> shall be submerged or subjected to freezing temperatures unless> such part is thermally protected.> > (c) The approved physical connection installation shall not> be installed in a pit or vault.> > 1. This subsection shall not apply to any physical> connection installation operated under a current physical> connection permit issued before the operative date of this> chapter until such time as the existing physical connection> installation is replaced or modified> > _______________________________________________> 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)
