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Decommissioning & Environmental Sciences
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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Utility Working Conference and Vendor Technology Expo (UWC 2024)
August 4–7, 2024
Marco Island, FL|JW Marriott Marco Island
Standards Program
The Standards Committee is responsible for the development and maintenance of voluntary consensus standards that address the design, analysis, and operation of components, systems, and facilities related to the application of nuclear science and technology. Find out What’s New, check out the Standards Store, or Get Involved today!
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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.”
C. E. Easterly,1 H. Noguchi,2, M. R. Bennett3
Fusion Science and Technology | Volume 8 | Number 2 | September 1985 | Pages 2564-2568
Environmental Study | Proceedings of the Second National Topical Meeting on Tritium Technology in Fission, Fusion and Isotopic Applications (Dayton, Ohio, April 30 to May 2, 1985) | doi.org/10.13182/FST85-A24665
Articles are hosted by Taylor and Francis Online.
Conversion rates of tritium gas (T2) to tritiated water are reported for tritium in ambient air and in nitrogen mixtures for initial tritium concentrations between 10−3 and 1 Ci/m3. Evidence suggests that, for air mixtures, production of condensable species, primarily HTO, occurs at a rate commensurate with the tritium decay rate. Nitrogen with less than 0.05% oxygen decreases this rate by a small (∼25%) amount. Irradiation with up to 10 Krad 60Co does not measurably affect the conversion rate in ambient air. This new data, along with the data from other authors, reveals that over the range of 10−3 to 106 Ci/m3, there are three reaction order regimes: (1) first order between 10−3 and 10 Ci/m3; (2) approximately second order between 10 and 104 Ci/m3; and (3) first order above 104 Ci/m3.