Whooo! I thought maybe you were a half-way house for liquid helium on its way to NIST! Good luck with your problem- let us know how it turns out.
-----Original Message----- From: David Bitton [mailto:[email protected]] Sent: Monday, July 19, 2010 2:17 PM To: [email protected]; [email protected] Subject: RE: Finding leaks in a dry pipe system I would like to clarify that the temperature in the freezer is -4, not -40F. The character after the 4 was the degree sign, not a zero. (Still a pretty cold environment to be working in. That's also why any solution involving tripping the system and filling it with water is not practical.) -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Brad Sent: Monday, July 19, 2010 1:53 PM To: [email protected] Subject: RE: Finding leaks in a dry pipe system -40! (at that temp, C and F are the same). Wouldn't the fitter trying to find the leaks have to be wearing a ski-mask, ear muffs, goggles, etc-- i.e., how do you hear, smell, see... or stick around for long? I guessed at things like system size, CFM of air comp, etc. and it could happen that the gage dropping could "look like a leak" for a couple hours until the whole thing reached 'steady state'. Who can think of better fire protection than keeping the combustible at -40? I do not question the need for sprinklers, but I think the 'sudden need for automatic sprinklers' is absurd. Would Manual easily converted to Automatic ever be considered by a committee?- (put a normally closed control valve on top of the dry valve)? -----Original Message----- From: tom poisal [mailto:[email protected]] Sent: Friday, July 16, 2010 9:38 PM To: [email protected] Subject: Re: Finding leaks in a dry pipe system would definitely rule out the air maintenance device, DPV trim, drum drips, quick opening device and all that, if you haven't already done so. On Fri, Jul 16, 2010 at 8:25 PM, max brown <[email protected]>wrote: > > Have used high air pressures to add the advantage of hearing the leak Also > have used the AQUA VELVA in compressor hose. Works as well as Ahmani but > cheaper. lol. Have had some sucess with both methods. Might try the high > tech Helium leak detector practice by professional leak detection company > but the air circulating , I assume complicates any method. Don't know of a > reasonably priced liquid that freezes below -40; look for the drip. Maybe on > a Periodic Chemical chart there is an Element that would not freeze? > > > Date: Fri, 16 Jul 2010 12:36:46 -0700 > > Subject: Re: Finding leaks in a dry pipe system > > From: [email protected] > > To: [email protected] > > > > Cold smoke like soldiers use for signaling. Pop a unit in the DPV, > > close it up, and then pressure it. > > > > On Fri, Jul 16, 2010 at 11:28 AM, David Bitton > > <[email protected]> wrote: > > > Thank you everyone for your replies. We are still trying to find a way > to > > > locate the leaks without tripping the system and/or putting the freezer > out > > > of service. (The aroma therapy sure is tempting...) If that turns out > not > > > to be possible, we will explore the other methods. > > > > > > -----Original Message----- > > > From: [email protected] > > > [mailto:[email protected]] On Behalf Of Ben > Young > > > Sent: Friday, July 16, 2010 2:00 PM > > > To: [email protected] > > > Subject: Re: Finding leaks in a dry pipe system > > > > > > Frank Herrick gave a good way to find dry system leaks back in March, > > > actually. > > > > > > > http://www.mail-archive.com/[email protected]/msg19989.html > > > > > > > > > Benjamin Young > > > > > > > > > > > > On Fri, Jul 16, 2010 at 1:26 PM, David Bitton > > > <[email protected]>wrote: > > > > > >> Yes, with the normal operating temperature at -4oF. With regards to > the > > >> ultrasonic leak detectors, those that I have seen are limited to > operating > > >> temperatures above freezing. > > >> > > >> -----Original Message----- > > >> From: [email protected] [mailto: > > >> [email protected]] On Behalf Of > > >> [email protected] > > >> Sent: Friday, July 16, 2010 1:11 PM > > >> To: [email protected] > > >> Subject: Re: Finding leaks in a dry pipe system > > >> > > >> Is the freezer in service? > > >> > > >> LV > > >> > > >> > > >> ---- tom poisal <[email protected]> wrote: > > >> > Buckets of soapy water and soft bush with plenty of helpers to go > over > > >> > every fitting, joint and weld. > > >> > > > >> > On Fri, Jul 16, 2010 at 12:18 PM, Matt Grise <[email protected]> > wrote: > > >> > > > >> > > There are leak detectors available that can detect the sound of > air > > >> leaking > > >> > > from pipes. They can often do better than ears. > > >> > > > > >> > > Matt Grisé PE*, LEED AP > > >> > > Sales Engineer > > >> > > Alliance Fire Protection > > >> > > *Licensed in KS & MO > > >> > > > > >> > > 913.888.0647 ph > > >> > > 913.888.0618 f > > >> > > 913.927.0222 cell > > >> > > www. AFPsprink.com > > >> > > > > >> > > -----Original Message----- > > >> > > From: [email protected] [mailto: > > >> > > [email protected]] On Behalf Of David > Bitton > > >> > > Sent: Friday, July 16, 2010 11:12 AM > > >> > > To: [email protected] > > >> > > Subject: Finding leaks in a dry pipe system > > >> > > > > >> > > Hello, > > >> > > > > >> > > > > >> > > > > >> > > I have a large cold storage freezer facility that is protected by > > >> several > > >> > > dry pipe systems. The systems are currently shut off due to > several > > >> leaks. > > >> > > A contractor used compressed air to pressurize the piping and find > > >> leaks, > > >> > > which he has repaired (mostly coming from the grooved > connections). > > >> > > However, there are additional leaks which has not been able to > find. > > >> Is > > >> > > anyone aware of other methods of finding the leaks (other than > > >> compressed > > >> > > air)? > > >> > > > > >> > > > > >> > > > > >> > > Thanks, > > >> > > > > >> > > > > >> > > > > >> > > David Bitton, ing. > > >> > > > > >> > > Quest Loss Control Services Inc. > > >> > > > > >> > > Les services de prévention des sinistres Quest inc. > > >> > > > > >> > > 5100, rue de la Savane, bureau 200 > > >> > > > > >> > > Montréal, QC H4P 1T8 > > >> > > > > >> > > (514) 341-4545 > > >> > > > > >> > > www.questlosscontrol.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]<to%3asprinklerforum-requ...@fire sprinkler.org> > <to%3asprinklerforum-requ...@fire > > > sprinkler.org> > > >> > > > <to%[email protected]<to%253ASprinklerforum-request @firesprinkler.org> > <to%253ASprinklerforum-request > > > @firesprinkler.org> > > >> > > > >> > > (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 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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]<to%3asprinklerforum-requ...@fire sprinkler.org> > <to%3asprinklerforum-requ...@fire > > > sprinkler.org> > > >> (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]<to%3asprinklerforum-requ...@fire sprinkler.org> > <to%3asprinklerforum-requ...@fire > > > sprinkler.org> > > >> (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]<to%3asprinklerforum-requ...@fire sprinkler.org> > > > (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]<to%3asprinklerforum-requ...@fire sprinkler.org> > > > (Put the word unsubscribe in the subject field) > > > > > > > > > > > -- > > Ron Greenman > > Instructor > > Fire Protection Engineering > > Bates Technical College > > Tacoma, WA > > > > Member: > > AFT WA 4184/AFL-CIO, SFPE, ASCET, NFPA, AFSA, NFSA AFAA, NIBS, WSAFM, WFC > > _______________________________________________ > > 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]<to%3asprinklerforum-requ...@fire sprinkler.org> > > (Put the word unsubscribe in the subject field) > > _________________________________________________________________ > The New Busy is not the too busy. Combine all your e-mail accounts with > Hotmail. > > http://www.windowslive.com/campaign/thenewbusy?tile=multiaccount&ocid=PID283 26::T:WLMTAGL:ON:WL:en-US:WM_HMP:042010_4 > _______________________________________________ > 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]<to%3asprinklerforum-requ...@fire sprinkler.org> > (Put the word unsubscribe in the subject field) > -- Tom Poisal, CET _______________________________________________ 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) _______________________________________________ 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)
