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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.”
R. R. Weynants, S. Jachmich, M. Van Schoor
Fusion Science and Technology | Volume 47 | Number 2 | February 2005 | Pages 202-208
Technical Paper | TEXTOR: Radiation Cooling and Confinement | doi.org/10.13182/FST05-A700
Articles are hosted by Taylor and Francis Online.
The application in TEXTOR of an externally controlled radial electric field Er, imposed by means of an electrode, has allowed to ascertain many aspects of the physics of the creation of Er and of its effect on radial transport. Radial conductivity was shown to depend on parallel viscosity with the latter's nonlinear response to Er providing the basic ingredient for Er bifurcation, typical for L- to H-mode transitions. Simultaneous time and space resolved measurements of Er and of the plasma flows in the edge by means of a newly developed inclined Mach probe have allowed to further substantiate the role of parallel viscosity and of neutral collisions in the damping of rotation. The causal role of grad Er in bringing about the transport changes has been proven by showing that the field shear is spatially correlated with and temporally leads the density gradient, as well as by comparison with theoretical modeling.