From pbarber at fsu.edu Mon Apr 23 11:33:24 2018 From: pbarber at fsu.edu (Powell Barber) Date: Mon, 23 Apr 2018 15:33:24 +0000 Subject: [gammanoles] Spectrograph removal... Message-ID: Hello Gammanoles, We?re still trying to schedule the spectrograph removal for the week of 7-11 May. Had good news on the paperwork front. I would appreciate your planning for this, and I?ll let you folks know just as soon as we confirm that date. cheers, p. From pbarber at fsu.edu Fri Apr 27 14:30:48 2018 From: pbarber at fsu.edu (Powell Barber) Date: Fri, 27 Apr 2018 18:30:48 +0000 Subject: [gammanoles] SB2 Leak - further details... Message-ID: <40976139-C3DF-4249-8E36-962C747A5AF6@fsu.edu> All - SB2 had a large leak in the capsule. Upon removing the electronics, I was able to identify the leak in what initially appeared to be some kind of vacuum port. I had not seen this type of device on any previous detectors. With curiosity and care, I was able to disassemble the port. Turned out to be a spring loaded pressure relief valve. The exterior components of the valve are heavily corroded. My guess is that this corrosion existed prior to the detectors last warm up, that the valve was opened to relieve pressure, and that corrosion prevented the valve from sealing thereafter. The o-ring and the sealing surface look good and I?m hopeful that after cleanup and reassembly it will seal. cheers, p. From tabor at nucmar.physics.fsu.edu Fri Apr 27 15:24:00 2018 From: tabor at nucmar.physics.fsu.edu (S. L. Tabor) Date: Fri, 27 Apr 2018 15:24:00 -0400 Subject: [gammanoles] SB2 Leak - further details... In-Reply-To: <40976139-C3DF-4249-8E36-962C747A5AF6@fsu.edu> References: <40976139-C3DF-4249-8E36-962C747A5AF6@fsu.edu> Message-ID: <5AE378D0.9020807@nucmar.physics.fsu.edu> Glad you are getting to the bottom of it. On 04/27/2018 02:30 PM, Powell Barber wrote: > All - > > SB2 had a large leak in the capsule. Upon removing the electronics, I was able to identify the leak in what initially appeared to be some kind of vacuum port. I had not seen this type of device on any previous detectors. With curiosity and care, I was able to disassemble the port. Turned out to be a spring loaded pressure relief valve. > > The exterior components of the valve are heavily corroded. My guess is that this corrosion existed prior to the detectors last warm up, that the valve was opened to relieve pressure, and that corrosion prevented the valve from sealing thereafter. > > The o-ring and the sealing surface look good and I?m hopeful that after cleanup and reassembly it will seal. > > cheers, > > p. > > > > _______________________________________________ > Gammanoles mailing list > Gammanoles at lists.fsu.edu > https://lists.fsu.edu/mailman/listinfo/gammanoles >