Within TVA we are currently using both the DMC-2000S and DMC-3000 electronic dosimeters. We have been transitioning over to the DMC-3000 as the DMC-2000S dosimeters fail. The average life of our DMC-2000S population is 10 years. We expected to be fully transition over to DMC-3000s within 2-3 years, with the remaining DMC-2000S population being used to monitor plant conditions and possibly replacing quartz fiber dosimeters in our e-kits.
On a side note, we have 171 of the DMC-3000 electronic dosimeters that are of the type B run that was recently identified as having a potential battery consumption issue. We completed testing of 52 of these dosimeters yesterday and had 10 that failed the Mirion test procedure. I don't know what others are seeing, but I thought this was an opportunity to share that information. We expect to finish testing that population over the next couple of days, and then returning the ones that failed back to Mirion for further testing and correction of the issue. Take cae, Jim From: Powernet [mailto:[email protected]] On Behalf Of Kinmark, Michael L. via Powernet Sent: Wednesday, October 31, 2018 2:20 PM To: [email protected] Cc: Kinmark, Michael L. Subject: [Powernet] Quick Benchmarking on ED's TVA External Message. Please use caution when opening. Question from Columbia on Electronic Dosimeter make/model Which ED model are you currently using? DMC-3000?, DMC-2000S?, Or other? Plans to change in the future? Columbia: Currently using DMC-2000S. Tentative plans to change over to 3000 in 2 years. Sincerely, Michael Kinmark HP Staff Advisor III Radiological Support Columbia Generating Station 509-377-2091 [email protected]
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