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Devoted to all aspects of the nuclear fuel cycle including waste management, worldwide. Division specific areas of interest and involvement include uranium conversion and enrichment; fuel fabrication, management (in-core and ex-core) and recycle; transportation; safeguards; high-level, low-level and mixed waste management and disposal; public policy and program management; decontamination and decommissioning environmental restoration; and excess weapons materials disposition.
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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.”
Weston M. Stacey, Edward W. Thomas
Fusion Science and Technology | Volume 39 | Number 1 | January 2001 | Pages 18-26
Technical Paper | doi.org/10.13182/FST01-A147
Articles are hosted by Taylor and Francis Online.
An interactive divertor and scrape-off layer plasma/two-dimensional neutrals/core plasma particle and power balance model has been used to investigate the importance of uncertainties or inadequacies in the data and modeling of atomic/molecular phenomena in the divertor to the calculation of the core and divertor plasma physics parameters in a tokamak. Treating recycling as being in the form of molecules rather than atoms as well as the inclusion of reabsorption of Lyman alpha radiation in the divertor are found to have large effects on the calculated plasma and neutral parameters throughout the divertor, scrape-off layer, and core. Whether the global parameters are changed if a significant fraction of the molecules are vibrationally excited has been tested; while molecular excitation does change parameters in the recycling region in front of the divertor plate, the effect on other divertor, scape-off layer, and core plasma parameters is negligible. Estimated uncertainties in the rates for charge-exchange and elastic scattering also have a very small effect on the global parameters. Inclusion of neutral-neutral scattering, while important for the calculation of local properties in the recycling region, has only a small effect on the global parameters.