I don't recall when this system was installed but late eighties or early nineties is likely. The building was one of several in an industrial park all fed from the same loop. The system was one of two in the building, both on the same feed, same manifold, & identical, mirrored systems. In the late nineties the left side system developed leaks in the first horizontal section of the schedule 10 bulk main. This section was replaced and two years later developed leaks in this new section. Since the original leaking pipe showed none of the symptoms typically associated with MIC (except the leaks), and since it was a full joint of pipe we assumed a bad seam weld. After the replacement joint started leaking we suspected MIC. Testing was inconclusive. No other pipe in the complex (as far as we know) exhibited similar symptoms.
On 1/27/08, Todd Williams - FPDC <[EMAIL PROTECTED]> wrote: > There is a local fire house with a dry system installed in 1984. Sch > 40 lines and Sch 10 mains. Dry system. It was never pitched properly > nor were low points correctly installed. It looks like most of the > main floor may be plugged or have significant scale build up. The > installing contractor is still doing the maintenance on the system > and may be doing a flushing I recommended as well. I hope to be > present when they do it. > > At 07:28 AM 1/27/2008, you wrote: > >As for extremes of what did and didn't work, I'd offer the following off the > >top of my head: > > > >1911 & 1916 wet systems at SS White Building, 12 stories in downtown Phila > >with steam pump boosting city water with city steam- did internal inspection > >to investigate feasibility of re-using 3/4" lines in a condo conversion from > >mfg; clean as a whistle. We did use new heads :) > > > >2001 installation of Allied galv sch 10 at an office building west shore of > >Harrisburg, wood truss attic dry systems; After 3 years in service, with > >nothing done to the system but install, hydro, air test, acceptance test, > >drain and place in initial service- no ITM whatsoever- pinhole leaks tripped > >the system a few times and we ripped it all out and replaced it 3 years > >after putting it in service. Analysis indicated it was NOT MIC and, after > >the system was completely replaced at no cost to the owner (and no > >reimbursement from mfr) the property owner asked us to not bid their > >addition. Just makes you wonder what would it take to make them happy? > >Shoulda told em "One Year Warranty, have a nice day" but we did what we > >thought was the right thing to do. Just can't make some people happy, I > >guess. > > > >GLC > > > >-----Original Message----- > >From: [EMAIL PROTECTED] > >[mailto:[EMAIL PROTECTED] On Behalf Of Ed Vining > >Sent: Saturday, January 26, 2008 12:20 PM > >To: [email protected] > >Subject: RE: Fire sprinkler question > > > >Thanks much guys. Now since we have the weekend to hash it over, how about > >the systems that didn't last. And if possible, why they didn't > > > > Ed > > > >Todd Williams - FPDC <[EMAIL PROTECTED]> wrote: > > As another example, I am working on a mill conversion and the > >building and sprinkler system are from 1904. When we changed the 3/4" > >pipe, the internal looked like new pipe. This had been a wet system, > >but was fed by river water. Go figure. > > > > > > > >Ed Vining > > 4819 John Muir Rd > > Martinez CA 94553 > > 925-228-8792 > > [EMAIL PROTECTED] > >_______________________________________________ > >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) > > Todd G. Williams, PE > Fire Protection Design/Consulting > Stonington, Connecticut > www.fpdc.com > 860.535.2080 > _______________________________________________ > 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) > -- Ron Greenman at home.... _______________________________________________ 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)
