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Nuclear Criticality Safety
NCSD provides communication among nuclear criticality safety professionals through the development of standards, the evolution of training methods and materials, the presentation of technical data and procedures, and the creation of specialty publications. In these ways, the division furthers the exchange of technical information on nuclear criticality safety with the ultimate goal of promoting the safe handling of fissionable materials outside reactors.
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Utility Working Conference and Vendor Technology Expo (UWC 2024)
August 4–7, 2024
Marco Island, FL|JW Marriott Marco Island
Standards Program
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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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 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. 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.”
H. Saimaru, I. Katanuma, Y. Mizoguchi, T. Cho (19P58)
Fusion Science and Technology | Volume 51 | Number 2 | February 2007 | Pages 370-372
Technical Paper | Open Magnetic Systems for Plasma Confinement | doi.org/10.13182/FST07-A1405
Articles are hosted by Taylor and Francis Online.
Existence of non-axisymmetric electrostatic potential in the plug region of GAMMA10 yields radial losses of ions in thermal barrier cell. Detailed behavior of ions in non-axisymmetric potential and its contribution to the transport in GAMMA10 is not investigated in details. In this study, by modeling the plug potential and the actual magnetic field in the end-mirror cell and estimating the amount of radial shifts of ions by following ion drift motion per bounce, the resultant mapping equation is used to analyze the orbits and diffusion of ions. Especially, the stability of orbits about the first and second order fixed points is studied and the diffusion due to chaotic orbits is estimated.