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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.”
W. M. Stacey, Jr.
Fusion Science and Technology | Volume 27 | Number 3 | May 1995 | Pages 277-291
Technical Paper | Plasma Engineering | doi.org/10.13182/FST95-A30390
Articles are hosted by Taylor and Francis Online.
The strong radial gradients that exist in the plasma edge (scrape-off layer and divertor) of tokamaks increase the magnitude of some previously neglected viscous terms to the same order as the other terms traditionally included in fluid plasma transport calculations. The standard fluid equations are modified to include these new viscous force and heat flux terms that are important in the plasma edge. These new terms give rise to viscous-driven radial particle and energy fluxes that are estimated to cause an order unity reduction in the radial peaking of energy fluxes incident on divertor collector platesy thus illustrating the importance of taking them into account in fluid calculations of divertor operation. A viscous drift velocity is found to be comparable in magnitude to the standard E × B and pressure gradient-driven drift velocities. The modified fluid equations are formulated to facilitate the inclusion of these important new viscous terms into fluid transport codes used for tokamak edge modeling.