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The mission of the Decommissioning and Environmental Sciences (DES) Division is to promote the development and use of those skills and technologies associated with the use of nuclear energy and the optimal management and stewardship of the environment, sustainable development, decommissioning, remediation, reutilization, and long-term surveillance and maintenance of nuclear-related installations, and sites. The target audience for this effort is the membership of the Division, the Society, and the public at large.
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August 4–7, 2024
Marco Island, FL|JW Marriott Marco Island
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Latest News
Vogtle-3 shuts down for valve issue
One of the new Vogtle units in Georgia was shut down unexpectedly on Monday last week for a valve issue that has since been investigated and repaired. According to multiple local news outlets, Georgia Power reported on July 17 that Unit 3 was back in service.
Southern Company spokesperson Jacob Hawkins confirmed that Vogtle-3 went off line at 9:25 p.m. local time on July 8 “due to lowering water levels in the steam generators caused by a valve issue on one of the three main feedwater pumps.”
Massimo Zucchetti
Fusion Science and Technology | Volume 19 | Number 3 | May 1991 | Pages 852-856
Advanced Reactor | doi.org/10.13182/FST91-A29451
Articles are hosted by Taylor and Francis Online.
Three types of fusion reactors, based on DT, DD and DHe fuel cycles, are compared from the first wall neutron-induced radioactivity point of view. Some of the definitions of low-activity, based on hands-on recycling, remote recycling, “U.S.” shallow land burial and deep geological confinement waste management criteria, are discussed. A three-classes rank of low-activity is proposed. The analysis of the induced radioactivity in first-wall steels shows that the long-term activity remains at high levels in DD and DHe cases too. DD and DT first-wall steels can be classified in none of the above-mentioned low-activity classes. Neutron induced radioactivity in some of the main constituting elements for the first-wall varies, when turning from DT to DD or DHe irradiation conditions. This depends on the different ways by which the long-lived radioactive nuclides are produced. Materials selection and low-activation alloys development, in order to minimize activity, will be necessary also for the first walls of fusion reactors based on advanced fuel cycles.