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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.”
Hisamichi Funaba, Nobuyoshi Ohyabu, Yasuhiko Takeiri, Kiyomasa Watanabe, Shin Kubo, Takashi Shimozuma, Katsumi Ida, Junichi Miyazawa, Ryuichi Sakamoto, Kenichi Nagaoka, Kenji Tanaka, Byron Jay Peterson, Masaki Osakabe, Yoshio Nagayama, Shigeru Inagaki, Yoshiro Narushima, Satoru Sakakibara, LHD Experimental Group, Sadayoshi Murakami
Fusion Science and Technology | Volume 46 | Number 2 | September 2004 | Pages 262-270
Technical Papers | Stellarators | doi.org/10.13182/FST04-A564
Articles are hosted by Taylor and Francis Online.
In the low-density plasmas of the Large Helical Device, the shape of the electron temperature profile changes depending on the direction of the tangential neutral beam injection (NBI) when the magnetic axis position is inward-shifted at R = 3.50 m. Core flattening was observed in plasmas heated by counter-NBI. The electron thermal diffusivities in co-NBI and counter-NBI-heated plasmas are compared. The diffusivity becomes large at the central region in the case of counter-NBI. This result shows that the flattening in the electron temperature profile is not caused simply by a change in the power deposition only. Some magnetic fluctuations are seen during counter-NBI. On the other hand, it is a promising feature that the electron thermal diffusivity at the peripheral region does not increase with the heating power in co-NBI plasmas.