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Division Spotlight
Education, Training & Workforce Development
The Education, Training & Workforce Development Division provides communication among the academic, industrial, and governmental communities through the exchange of views and information on matters related to education, training and workforce development in nuclear and radiological science, engineering, and technology. Industry leaders, education and training professionals, and interested students work together through Society-sponsored meetings and publications, to enrich their professional development, to educate the general public, and to advance nuclear and radiological science and engineering.
Meeting Spotlight
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.”
S. Masuzaki, N. Ashikawa, K. Nishimura, M. Tokitani, T. Hino, Y. Yamauchi, Y. Nobuta, N. Yoshida, M. Miyamoto, A. Sagara, N. Noda, H. Yamada, A. Komori, LHD Experiment Group
Fusion Science and Technology | Volume 58 | Number 1 | July-August 2010 | Pages 297-304
Chapter 7. Plasmas-Wall Interactions | Special Issue on Large Helical Device (LHD) | doi.org/10.13182/FST10-A10816
Articles are hosted by Taylor and Francis Online.
Wall conditioning in the Large Helical Device (LHD) has been conducted successively since the first experimental campaign in 1998. The effects of wall conditioning on the vacuum condition, the plasma performance, and the surface modification of the plasma-facing components have been analyzed by both macroscopic and microscopic observations such as residual gas analysis and transmission electron microscope observation, respectively. The main tools for the conditioning are mild baking (95°C); glow discharges with hydrogen, helium, and neon; and wall coating with titanium and boron. Though the baking temperature is lower than in other fusion devices, it reduces impurity gases well just after the start of vacuum pumping, and it reduces retained hydrogen in plasma-facing components during the experimental campaign. Helium glow discharge was revealed to cause heavy damage on the surfaces of metallic components and the contamination of the hydrogen discharges with helium released from wall. Neon glow discharge has been conducted since it causes much less damage and hastens the conditioning of the wall. Boronization is very effective to reduce oxygen impurity in plasma, and the effects last for the whole experimental campaign in LHD.