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Modernizing I&C for operations and maintenance, one phase at a time
The two reactors at Dominion Energy’s Surry plant are among the oldest in the U.S. nuclear fleet. Yet when the plant celebrated its 50th anniversary in 2023, staff could raise a toast to the future. Surry was one of the first plants to file a subsequent license renewal (SLR) application, and in May 2021, it became official: the plant was licensed to operate for a full 80 years, extending its reactors’ lifespans into 2052 and 2053.
S. Yamamoto, K. Nagasaki, Y. Suzuki, T. Mizuuchi, H. Okada, S. Kobayashi, B. Blackwell, K. Kondo, G. Motojima, N. Nakajima, Y. Nakamura, C. Nührenberg, Y. Torii, S. Watanabe, F. Sano
Fusion Science and Technology | Volume 51 | Number 1 | January 2007 | Pages 92-96
Technical Paper | Stellarators | doi.org/10.13182/FST07-A1290
Articles are hosted by Taylor and Francis Online.
Two kinds of magnetohydrodynamics instability are observed in electron cyclotron heating and neutral beam injection-heated Heliotron J plasmas. One is the pressure-driven interchange modes with m = 2/n = 1 and m = 5/n = 3 and low frequency (fexp < 20 kHz), which are observed in the plasma with a rational surface of /2 = 0.5 or 0.65. The other is the energetic ion-driven global Alfvén eigenmodes (GAEs) in the Alfvén frequency range. To identify the observed GAEs, the frequency of the observed mode with shear Alfvén spectra calculated by CAS3D3 is compared. The interchange mode with m = 5/n = 3 and bursting GAE with intense magnetic fluctuations may affect the bulk plasma confinement and energetic ion transport, respectively.
