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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.”
S. Kasai, K. Kamiya, K. Shinohara, H. Kawashima, H. Ogawa, K. Uehara, Y. Miura, F. Okano, S. Suzuki, K. Hoshino, K. Tsuzuki, M. Sato, K. Oasa, Y. Kusama, T. Yamauchi, Y. Nagashima, K. Ida, S. Hidekuma, T. Ido, Y. Hamada, A. Nishizawa, Y. Kawasumi, Y. Uesugi, S. Okajima, K. Kawahata, A. Ejiri, H. Amemiya, Y. Sadamoto
Fusion Science and Technology | Volume 49 | Number 2 | February 2006 | Pages 225-240
Technical Paper | JFT-2M Tokamak | doi.org/10.13182/FST06-A1097
Articles are hosted by Taylor and Francis Online.
The diagnostic system of JFT-2M has consisted of about 30 individual diagnostic instruments, which were used to study plasma production, control, equilibrium, stability, confinement, plasma heating by neutral beam injection and/or by radio-frequency (rf) (lower hybrid, ion cyclotron resonance frequency, electron cyclotron heating), and current drive by rf. In these instruments, the motional Stark effect polarimeter, charge-exchange recombination spectroscopy, heavy ion beam probe, time-of-flight neutral particle analyzer, etc., have helped in further understanding the improved mechanism of confinement such as H-mode and high-recycling-steady H-mode, and operational regimes of these modes. An infrared television camera system and a lost ion probe have played a very important role in investigating the heat load on the walls due to ripple lost particles and escaping ions from the core plasma region, respectively.