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Division Spotlight
Isotopes & Radiation
Members are devoted to applying nuclear science and engineering technologies involving isotopes, radiation applications, and associated equipment in scientific research, development, and industrial processes. Their interests lie primarily in education, industrial uses, biology, medicine, and health physics. Division committees include Analytical Applications of Isotopes and Radiation, Biology and Medicine, Radiation Applications, Radiation Sources and Detection, and Thermal Power Sources.
Meeting Spotlight
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.”
N. Prolingheuer, M. Herbst, B. Heuel-Fabianek, R. Moormann, R. Nabbi, B. Schlögl, J. Vanderborght
Nuclear Technology | Volume 168 | Number 3 | December 2009 | Pages 924-930
Dose/Dose Rate | Special Issue on the 11th International Conference on Radiation Shielding and the 15th Topical Meeting of the Radiation Protection and Shielding Division (PART 3) / Radiation Protection | doi.org/10.13182/NT09-A9328
Articles are hosted by Taylor and Francis Online.
At sites with powerful particle accelerators, the problem of groundwater activation by direct neutron radiation arises. Licensing of particle accelerators requires evidence that groundwater activation is within the legal limits and thus will not endanger workers, the public, or the environment.In this study we focus on the following radionuclides: 14C, 41Ca, 45Ca, 36Cl, 55Co, 57Co, 60Co, 3H, 54Mn, 24Na, 32P, 35S, 32Si, and 50V. The conventional approach for calculating activation of soil and groundwater is described and utilized for a fictive 5-MW proton accelerator at Jülich, Germany, with a beam loss of 1 Wm-1. An updated overview of partition coefficients for relevant radionuclides in sand, clay, loam, and organic soils is presented. Based on the two aforementioned methods, groundwater activation is estimated with a simplified homogeneous groundwater transport model. The results indicate 3H, 14C, and 36Cl as the most relevant radionuclides concerning the resultant activity concentrations and estimated dose rates at the site boundary. For this fictive test case, the site boundary is located a distance 250 m downstream of the accelerator, which leads to acceptable risk for the public, given the legal standards.