During our last outage in February we used the Mirion DMC 3000 TX communicating wirelessly to an active dive antenna attached to the diver outside the divers suit. The antenna is wired along the umbilical to a Mirion Adaptive Wireless Monitor configured as a base station. The AWM is then networked to our remote monitoring program.
The WRM transmitter module is strong enough to penetrate at least a couple meters of water which made it not an issue to transmit from the legs or arms directly to the dive antenna. Using this method we completed at least a half dozen dives with the dosimeter update time never exceeding 8 seconds and zero lost contacts. I got the idea from Plant Hatch who has been using this method for the last three years. No more IMUX, no more wires inside the suit, no more lost contacts resulting in having to pull the diver out of the water, cuts number of potential failure points in half which greatly simplifies testing requirements and uses equipment in use elsewhere in the plant which removes requirement to train people each year on equipment that is only ever used for diving. If you have any questions feel free to ask. Thanks, Ryan Elsener Radiation Protection Technical Specialist Instrument Coordinator Exelon Generation - Lasalle Station [cid:[email protected]] W: 815-415-2721 E: [email protected]<mailto:[email protected]> From: Vickers, Glen:(Exelon Nuclear) <[email protected]> Sent: Friday, August 23, 2019 10:20 AM To: [email protected] Cc: Bradley A Krupp <[email protected]>; Richard S LaBurn <[email protected]>; Elsener, Ryan A:(Exelon Nuclear) <[email protected]> Subject: Re: Diving Remote Monitoring Dmc3000 and AWM as base for each diver. Ryan is a good contact. Did suppression pool cleaning and had good performance Glen Vickers, CHP Exelon RP Technical Lead 815-216-2723 work/cell ________________________________ From: Powernet <[email protected]<mailto:[email protected]>> on behalf of Bradley A Krupp via Powernet <[email protected]<mailto:[email protected]>> Sent: Friday, August 23, 2019 10:14:30 AM To: [email protected]<mailto:[email protected]> <[email protected]<mailto:[email protected]>> Cc: Bradley A Krupp <[email protected]<mailto:[email protected]>>; Richard S LaBurn <[email protected]<mailto:[email protected]>> Subject: [EXTERNAL] [Powernet] Diving Remote Monitoring Fermi is going to be doing a significant amount of work inside our Torus in our upcoming Spring 2020 outage. In the past we have used the Mirion IMUX and associated hardware to remotely monitor divers radiation exposure. This generally works quite well but our equipment is getting dated and we don't know how long replacement parts will be available. Is anyone using anything different? If so, could you please provide additional details and contact information? Thanks in advance for your assistance. Brad Krupp 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. If you are not an intended recipient, or the employee or agent responsible for delivery of this Email to the intended recipient(s), you are hereby notified that any dissemination, distribution or copying of this Email is strictly prohibited. If you have received this message in error, please immediately notify the sender and permanently delete this Email and any copies. Exelon policies expressly prohibit employees from making defamatory or offensive statements and infringing any copyright or any other legal right by Email communication. Exelon will not accept any liability in respect of such communications. -EXCIP
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