Water quality MAY be an issue. They have seasonal inflow from various parts of West and South Texas and I'm told that they have experience salt residue on cooling equipment toward the end of summer. Original UG dates back to early 90's and there has been work done (improvements, not repairs) as recently as 2000. Again, I'm not focusing in on this, just allowing for the possibility that it's a contributing factor. The obvious explanations for push-offs are all related to workman ship. If mechanical restraints fail, they could have corroded (because they weren't adequately protected) or weren't installed correctly. If dissimilar pipe types come together at a joint, the wrong rubbers could have been installed in MJ fittings. They don't have earthquakes, but do have VERY old fire pumps that get exercised more than just the run tests. There's a lot going on here, but I am curious as to whether anyone has heard of water quality directly affecting joint integrity in UG piping.
SL -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Scott A Futrell Sent: Friday, March 28, 2014 4:24 PM To: [email protected] Subject: RE: Water Chemistry/MJ gasket issues No, but is water quality an issue? Is it non-potable? How old is the UG? Scott Futrell (763) 425-1001 x12 Office (612) 759-5556 Cell -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Steve Leyton Sent: Friday, March 28, 2014 5:18 PM To: AFSA Subject: Water Chemistry/MJ gasket issues Has anyone every had/seen verified problems with UG fitting rubbers hardening or cracking or otherwise leaking/failing due to water quality? Visited a site in West Texas today that has experienced leaks and pushoffs several times over the past few years. I'm not fixated on this; there is quite the lineup of suspects for this one - pump on/off hammer due to fire brigade training exercises, corrosion of restraints, bad install, all under consideration. But they've had an unusually high occurrence rate of MJ joint failures. Steve L. Lord (Muncy), I apologize for droppin' potty mouth on the Forum and be with the starving pygmies down in New Guinea, amen. _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
