We got similar good performance doing suppression pool diving at LaSalle in Feb 2019. Connected active antenna to AWM to increase signal gain. If you just put the DMC3000 underwater and the AWM in air, the AWM will pick up to about 27 inch deep in water before signal gets too weak to be picked up by AWM. In the dive suit with some air gap and powered gain in the antenna you can get consistent reception. All dives going forward are DMC3000, powered active antenna to increase gain, and AWM. Diving activities were the last use for DMC2000 dosimeters and now we're all DMC3000. Its great to only need to support one model of dosimeter.
Glen Vickers, CHP Exelon Corp RP Technical Lead 815-216-2723 (work/cell) From: Powernet <powernet-boun...@hpspowernet.org> On Behalf Of Creamer, Charles E via Powernet Sent: Tuesday, January 14, 2020 09:35 To: 'powernet@hpspowernet.org' <powernet@hpspowernet.org> Cc: Creamer, Charles E <cecrea...@tva.gov>; Bailey, Franklin D <franklin.bai...@duke-energy.com> Subject: [EXTERNAL] Re: [Powernet] Use of DMC3000 with Diving They worked great at Browns Ferry. Used them the last outage when we cut up our Steam dryer as part of EPU. Used them with the active dive antenna and AWM. That evolution consisted of almost three weeks of diving. The updates much faster than the old system as did not have to deal with the iMUX. I was skeptical at first but after using it the last outage would not want to go back. The update time for each of the dosimeters was 4-8 seconds which was much better than we saw with the old system. Will be diving again this upcoming outage. Chuck Creamer Health Physicist Radiation Protection Tennessee Valley Authority; Browns Ferry Nuclear Plant P.O. 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Any misuse or unauthorized disclosure can result in both civil and criminal penalties. If you are not the intended recipient, be aware that any disclosure, copying, distribution, or use of the content of this information is prohibited. If you have received this communication in error, please notify me immediately by email and delete the original message. From: Powernet <powernet-boun...@hpspowernet.org<mailto:powernet-boun...@hpspowernet.org>> On Behalf Of Bradley A Krupp via Powernet Sent: Monday, January 13, 2020 8:16 AM To: powernet@hpspowernet.org<mailto:powernet@hpspowernet.org> Cc: Bradley A Krupp <bradley.kr...@dteenergy.com<mailto:bradley.kr...@dteenergy.com>>; Bailey, Franklin D <franklin.bai...@duke-energy.com<mailto:franklin.bai...@duke-energy.com>> Subject: Re: [Powernet] Use of DMC3000 with Diving TVA External Message. Please use caution when opening. Fermi is planning on it and has purchased all the equipment for our torus recoat project. Decided to go that way after feedback from Brown's Ferry, Hatch and a couple others. We'll see how that works out. They all liked it better than the imux. Get Outlook for iOS<https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Faka.ms%2Fo0ukef&data=02%7C01%7Cglen.vickers%40exeloncorp.com%7C4d038598f9ec489bb36208d799078e09%7C600d01fc055f49c6868f3ecfcc791773%7C0%7C0%7C637146130048002647&sdata=da%2BOno9ya6u%2Fxs4UNVyLJy%2B%2BUIN%2B3CLgh7CzQdP4PpE%3D&reserved=0> ________________________________ From: Powernet <powernet-boun...@hpspowernet.org<mailto:powernet-boun...@hpspowernet.org>> on behalf of Helton, Mark via Powernet <powernet@hpspowernet.org<mailto:powernet@hpspowernet.org>> Sent: Sunday, January 12, 2020 3:59:04 PM To: powernet@hpspowernet.org<mailto:powernet@hpspowernet.org> <powernet@hpspowernet.org<mailto:powernet@hpspowernet.org>> Cc: Helton, Mark <mark.hel...@duke-energy.com<mailto:mark.hel...@duke-energy.com>>; Bailey, Franklin D <franklin.bai...@duke-energy.com<mailto:franklin.bai...@duke-energy.com>> Subject: [EXTERNAL] [Powernet] Use of DMC3000 with Diving Catawba is looking for anyone using the Mirion DMC3000 self reading dosimeter to monitor divers' dose. If you have used the DMC3000 for diving, please provide contact information or respond directly to email franklin.bai...@duke-energy.com<mailto:franklin.bai...@duke-energy.com> or phone number (803) 701-3968. Mark A Helton Senior Scientist-Radiation Protection Duke Energy - Catawba Nuclear Station Get Outlook for iOS<https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Faka.ms%2Fo0ukef&data=02%7C01%7Cglen.vickers%40exeloncorp.com%7C4d038598f9ec489bb36208d799078e09%7C600d01fc055f49c6868f3ecfcc791773%7C0%7C0%7C637146130048002647&sdata=da%2BOno9ya6u%2Fxs4UNVyLJy%2B%2BUIN%2B3CLgh7CzQdP4PpE%3D&reserved=0> This Email message and any attachment may contain information that is proprietary, legally privileged, confidential and/or subject to copyright belonging to Exelon Corporation or its affiliates ("Exelon"). This Email is intended solely for the use of the person(s) to which it is addressed. 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