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Human Factors, Instrumentation & Controls
Improving task performance, system reliability, system and personnel safety, efficiency, and effectiveness are the division's main objectives. Its major areas of interest include task design, procedures, training, instrument and control layout and placement, stress control, anthropometrics, psychological input, and motivation.
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Utility Working Conference and Vendor Technology Expo (UWC 2024)
August 4–7, 2024
Marco Island, FL|JW Marriott Marco Island
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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.”
Tres Thoenen
Nuclear Technology | Volume 126 | Number 1 | April 1999 | Pages 75-87
Technical Paper | Radioactive Waste Management and Disposal | doi.org/10.13182/NT99-A2959
Articles are hosted by Taylor and Francis Online.
Solubility limitation of radionuclides by solid phases in aqueous environments is a key factor in performance assessment of radioactive waste repositories. Although the modeling of solubility limits is a standard procedure, results are often questionable because the basic data used are either irrelevant, inaccurate, or incomplete. This is illustrated by discussing the potential solubility limitation of Ni in sulfidic groundwaters, which is of some importance to the planned low- and intermediate-level radioactive waste repository at Wellenberg, Switzerland. Calculated solubility limits for Ni may be in error if a solubility-limiting sulfide mineral is chosen that is irrelevant for the considered geochemical conditions. Solubility data need to be carefully evaluated: In the case of millerite (NiS), the most likely Ni sulfide mineral to form, widely used solubility product constants turn out to be based on crude estimates only, and accurate solubility data are missing. The formation of Ni sulfide complexes may considerably enhance the solubility of Ni. Although reliable complexation constants for Ni sulfide complexes are missing, their neglect may result in a severe underestimation of Ni solubility in sulfidic environments, by analogy with Zn sulfide complexes whose complexation constants are reliably known.