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The Radiation Protection and Shielding Division is developing and promoting radiation protection and shielding aspects of nuclear science and technology — including interaction of nuclear radiation with materials and biological systems, instruments and techniques for the measurement of nuclear radiation fields, and radiation shield design and evaluation.
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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.”
T. Saito, Y. Tatematsu, K. Kajiwara, H. Abe, M. Ishikawa, Y. Kiwamoto, Y. Imaizumi, K. Nishida, E. Yokoyama, M. Ichimura, K. Ishii, I. Katanuma, K. Yatsu
Fusion Science and Technology | Volume 39 | Number 1 | January 2001 | Pages 143-146
Topical Lectures | doi.org/10.13182/FST01-A11963427
Articles are hosted by Taylor and Francis Online.
This paper describes response of currents circulating in an end region of the GAMMA 10 tandem mirror to variation of an end plate resistance REP. By changing its value from less than 1 Ω to over 1 MΩ, are examined the variation of the plasma potentials and the current balance at the end plate during fundamental ECRH. Main results are as follows. First, for REP ≥ 3 kΩ, the end plate potential as measured from the vacuum vessel is nearly constant and for REP ≤ 0.5 kΩ, on the contrary, the current flowing through the resistance is nearly constant. Second, the plasma potentials other than the end plate weakly depends on REP. In particular, the plasma potential at the central cell hardly varies with REP. Third, with decreasing REP, a step-like increase in the net current flowing through the end plate is observed at REP ≈ Zeff. Ion currents are observed on ring electrodes installed in the mirror cell in which ECRH is applied. A part of the ion current is to be connected to the end plate current.