The owner wants to re-use the system and we have to prove to him that it needs to be replaced, if it does. I'm thinking after a physical inspection and air test, it would tell us if we have something that could be used or not. The building is approximately 30 ft to the peak and 25 to the hip and is wide open for storage and maintenance of large equipment (demolition company). However, working on mains around the perimeter will be difficult at best.
My guess is that when the system was shut down, they just opened the 2" drain and didn't bother with low points. I think most of the low stuff will have to be replaced. But it would be helpful if at least the high piping could remain. Todd G Williams, PE Fire Protection Design/Consulting Stonington, CT www.fpdc.com > On Nov 20, 2013, at 9:06 AM, Scott A Futrell <sco...@ffcdi.com> wrote: > > I like the replace it all option... > How old is the system to start with? > You need to replace all the sprinklers, if some have "popped" you don't know > how many others may be damaged. > What about gaskets in grooved couplings? > Is the water supply now equal to the original pump and pond? If not, pipe > size changes, right? > You could minimize the liability by replacing everything... > > Scott > > (763) 425-1001 Office > (612) 759-5556 Cell > > > -----Original Message----- > From: sprinklerforum-boun...@lists.firesprinkler.org > [mailto:sprinklerforum-boun...@lists.firesprinkler.org] On Behalf Of Todd - > Work > Sent: Wednesday, November 20, 2013 7:02 AM > To: sprinklerforum@lists.firesprinkler.org > Subject: resurrecting an old system > > I am working with a company that bought a building where the sprinkler system > had been turned off about 10 years ago. The fire department is requiring that > a system be turned on. The existing system was fed from a pump taking suction > from a pond (disconnected and removed). There has been some cracking and > splitting of fittings at low points and some heads have popped. > > The first step was to have a contractor come in and made a detailed visual > inspection of the system, including internal. That showed that all of the > pipe up high appears to be in good shape and could possibly be re-used. > However, there was some mud (not scale) that had collected in some of the > mains. > > My thought was that the next step would be to fix or cap off the broken areas > and do an air test to see what the integrity of the system really is, then > flush the system if all looks good. However, would you want to flush out the > mains before you do an air test? If there is a problem with the mains in the > area covered by the mud, would the air test not show it? On the other side, > flushing would create a problem since there is no public water supply. We > would probably have to get a fire department pumper involved. Also, you could > have an issue if the water finds a leak and water starts spraying down on > equipment > > Thoughts? Flush or air test first? > > Todd G Williams, PE > Fire Protection Design/Consulting > Stonington, CT > www.fpdc.com > _______________________________________________ > Sprinklerforum mailing list > Sprinklerforum@lists.firesprinkler.org > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org > _______________________________________________ > Sprinklerforum mailing list > Sprinklerforum@lists.firesprinkler.org > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org _______________________________________________ Sprinklerforum mailing list Sprinklerforum@lists.firesprinkler.org http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
