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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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Fusion Science and Technology
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.”
K. Hasegawa, H. Fusumae, M. Matsuyama, K. Watanabe
Fusion Science and Technology | Volume 21 | Number 2 | March 1992 | Pages 500-505
Safety; Measurement and Accountability; Operation and Maintenance; Application | doi.org/10.13182/FST92-A29796
Articles are hosted by Taylor and Francis Online.
The kinetics of the UV-stimulated HT oxidation in oxygen atmosphere was studied in combination with computer simulation consisting of 30 elementary reactions. The rate of HTO formation was observed to be proportional to the pressure of O2 and molar fraction of HT with respect to total hydrogen pressure (H2 + HT), and 1/2 order to total hydrogen pressure. The simulation resulted in the same pressure dependence as the observed one. The contributions of elementary reactions to the HTO formation were calculated, assuming steady states for intermediate species. It was revealed that the UV-stimulated HT oxidation is initiated by photolysis of O2 to O(3P) (λ < 242 nm) and subsequently formed O3 and OH play important roles in the HTO formation. The present results suggest that the conversion of tritium gas to tritiated water is considerably enhanced in the stratosphere owing to the presence of UV photons having shorter wavelengths than 242 nm.