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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.”
Raffaele Albanese, Enzo Coccorese, Otto Gruber, Raffaele Martone, Patrick McCarthy, Francesco Carlo Morabito
Fusion Science and Technology | Volume 30 | Number 2 | November 1996 | Pages 219-236
Technical Paper | Special Section: Plasma Control Issues for Tokamaks / Plasma Engineering | doi.org/10.13182/FST96-A30752
Articles are hosted by Taylor and Francis Online.
Real-time control of the plasma shape in the International Thermonuclear Experimental Reactor (ITER) calls for a fast and accurate identification of the equilibrium starting from magnetic measurements. The technique proposed for ITER interpolates the actual equilibrium within a previously generated dataset where each parameter is given a sufficiently wide range of variation. The properties of the artificial neural networks (ANNs) are shown to be well suited for this task. The satisfactory comparison with the functional parameterization, which is currently adopted for the feedback control in ASDEX-Upgrade, makes the proposed technique well linked to the experience available in current experiments. The ANN technique also provides an algorithm for the selection of the number and location of the magnetic sensors, which is an important issue for the ITER design. A preliminary analysis of the effects of the eddy currents flowing in the structure is also included. Numerical results presented refer to the so-called TAC-4 ITER geometry; extrapolation to update geometries with a close poloidal field concept is straightforward.