This backflow thing is always so tragic, humorous, and illogical to me. Tragic because it's so costly. Humorous because I'm not sure what these things are actually supposed to do the way the rules are applied. The water guys are charged with providing, safe, clean and "pleasing" water. Health issues from sprinklers have been about a dozen in a hundred years and I'd argue that most of them were questionable or minor. Clean and pleasing issues are about the same. Since the risk is low and the test can only tell you the device is working at the time the gauge is attached to it not predict what will happen when you re-open the valves, the mostly likely time to stir up debris and fouled the seal, what is the value over a ACV that can be constantly monitored 24/7 without costly test gear? And the illogic is if you're so afraid of your own water becoming a risk because it's sitting around in a pipe, which most of theirs pretty much is until a hydrant is opened, that you need an RP then why don't they just up the anti and require a break tank? Stupid is as stupid does.
On Fri, Apr 1, 2011 at 5:20 AM, Todd Williams <[email protected]> wrote: > And CT may be going back to RPZ on all systems... > > At 08:14 AM 4/1/2011, you wrote: >>The hole DOES allow the AF into the supply piping; prior to the BFP >>requirements kicking in, we had a single detector check at the incoming >>service (pit or riser) and the AF was usually tagged off the wet system, so >>there was also an ALV blocking backflow to the supply. Since you have almost >>insignificant flow back thru the hole, into a 500 gal wet system, it was >>doubtful there'd be a situation where the AF would come back in in harmful >>(maybe even in measurable) amounts. Since we didn't have any reports of >>sickened people, guess it worked. Many of us felt the BFP requirements were >>ridiculous when they entered the picture, but we raised the price of each >>system by $2 to $4k ever since- quite a price if you think about how many >>systems we've installed in the last generation to cure a problem that didn't >>exist. And how many systems have been "upgraded" with BFP retrofits without a >>check of the hydraulic impact, so the calc'd system doesn't work but we'll >>lower the chance of co > n >> tamination from .0001 to .000001. >> >>Good thing there's all kinds of fat and cushions built into the standard, eh? >> >>George Church >>Rowe Sprinkler Systems, Inc. >>PO Box 407, Middleburg, PA 17842 >>877-324-ROWE 570-837-6335 fax >>[email protected] >> >> >> >>-----Original Message----- >>From: [email protected] >>[mailto:[email protected]] On Behalf Of Richard Solis >>Sent: Thursday, March 31, 2011 10:42 PM >>To: [email protected] >>Subject: Pipe Dope >> >>Did everyone forget AF expands with rising temps, that's why you have an >>expansion tank, or a check valve with a 3/32 hole. How the 3/32 hole in a >>check eludes me as to how it won't let AF back into the domestic. >>_______________________________________________ >>Sprinklerforum mailing list >>[email protected] >>http://fireball.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 >>[email protected] >>http://fireball.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) > > Todd G. Williams, PE > Fire Protection Design/Consulting > Stonington, CT > 860.535.2080 > www.fpdc.com > > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://fireball.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) > -- Ron Greenman Instructor Fire Protection Engineering Technology Bates Technical College 1101 So. Yakima Ave. Tacoma, WA 98405 [email protected] http://www.bates.ctc.edu/fireprotection/ 253.680.7346 253.576.9700 (cell) Member: ASEE, SFPE, ASCET, NFPA, AFSA, NFSA, AFAA, NIBS, WSAFM, WFC They are happy men whose natures sort with their vocations. -Francis Bacon, essayist, philosopher, and statesman (1561-1626) _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.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)
