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Division Spotlight
Fuel Cycle & Waste Management
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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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.”
Michael Tendler, Daniel Heifetz
Fusion Science and Technology | Volume 11 | Number 2 | March 1987 | Pages 289-310
Overview | doi.org/10.13182/FST87-A25010
Articles are hosted by Taylor and Francis Online.
The theory of neutral particle kinetics treats the transport of mass, momentum, and energy in a plasma due to neutral particles that themselves are unaffected by magnetic fields. This transport affects the global power and particle balances infusion devices, as well as profile control and plasma confinement quality, particle and energy fluxes onto device components, performance of pumping systems, and the design of diagnostics and the interpretation of their measurements. The development of analytic, numerical, and Monte Carlo methods of solving the time-independent Boltzmann equation describing neutral kinetics is reviewed. These models for neutral particle behavior typically use adaptations of techniques developed originally for computing neutron transport, due to the analogy between the two phenomena, where charge-exchange (CX) corresponds to scattering and ionization to absorption. There are, however, some important qualitative differences between the two fields. Progress in the simulation of neutral kinetics depends on developing multidimensional analytic methods and obtaining experimental data for the physical processes of wall reflection, the neutral/plasma interaction, and for processes in fusion devices that are directly related to neutral transport, such as Hα emission rates, plenum pressures, and CX emission spectra.