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Division Spotlight
Thermal Hydraulics
The division provides a forum for focused technical dialogue on thermal hydraulic technology in the nuclear industry. Specifically, this will include heat transfer and fluid mechanics involved in the utilization of nuclear energy. It is intended to attract the highest quality of theoretical and experimental work to ANS, including research on basic phenomena and application to nuclear system design.
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 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.”
T. Saito, Y. Tatematsu, Y. Kiwamoto, K. Kajiwara, Y. Yoshimura, H. Abe, K. Ito, A. Suzuki, A. Yamazaki, H. Koyama, S. Umehara, K. Ishii, M. Ichimura, A. Mase, T. Tamano, K. Yatsu
Fusion Science and Technology | Volume 35 | Number 1 | January 1999 | Pages 233-237
Oral Presentations | doi.org/10.13182/FST99-A11963858
Articles are hosted by Taylor and Francis Online.
This paper describes characteristics of end loss electrons (ELE's) from a tandem mirror. Without electron cyclotron resonance heating (plug ECRH), ELE's issue from an ICRF heated hot ion plasma. Their temperature increases with the hot ion diamagnetism. Drag heating of electrons on hot ions balances with axial loss due to Coulomb scattering. Landau damping of an Alfvén ion cyclotron wave is also observed in this phase. On application of the plug ECRH, an intense loss flux of warm electrons is generated The axial heat flow carried by the warm electrons significantly increases. Control of the axial flux of the warm electrons is tried A highly transparent mesh is put up over an end plate and a bias voltage negative to the end plate is applied to the mesh. Then secondary electrons emitted from the end plate are suppressed and the loss flux of the warm electrons decreases to about one third of that without the mesh bias. This reduction factor is much smaller than the value expected from the rate of ion plugging. A possible cause of this is an ion current through a plasma behind the end plate.