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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.”
Jin Hua Huang, Mohamed E. Sawan
Fusion Science and Technology | Volume 6 | Number 2 | September 1984 | Pages 240-252
Technical Paper | Blanket Engineering | doi.org/10.13182/FST84-A23155
Articles are hosted by Taylor and Francis Online.
Tritium breeding calculations for a Li17Pb83 benchmark problem that employs steel as structure are presented. Large deviations between the results of continuous energy Monte Carlo and multigroup discrete ordinates are observed when different multigroup libraries are used. Effects of group structure and weighting spectra are explored by collapsing the Los Alamos National Laboratory 80-group library into different broad group structures using different weighting spectra. For blanket systems with natural lithium-lead, many groups with fine structure in the iron resonance region are required for accurate tritium breeding determination. Fewer broad groups can be used only if an appropriate weighting spectrum representing the spectrum in the Li17Pb83 system is used to generate the data. For systems highly enriched in 6Li, these effects are less pronounced with fewer groups being adequate.