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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.”
(Prepared by P.L. Mondino, E. Bertolini)
Fusion Science and Technology | Volume 10 | Number 3 | November 1986 | Pages 1375-1385
Machine Upgrades and Next-Generation Device | doi.org/10.13182/FST86-A24922
Articles are hosted by Taylor and Francis Online.
Three years have passed since the Joint European Torus (JET) started operation in June 1983. Phase I of the scientific programme, devoted to ohmic heating studies, has been completed. Phase II, devoted to additional heating studies started in January 1985. From the technical point of view JET has been entirely successful: indeed the plasma current, an important figure of merit for a tokamak, has reached 5.1 MA for 3s, (exceeding the design value of 4.8 MA). Ion Cyclotron Resonance Heating has added up to 6 MW to the plasma and Neutral Beam Injection has added up to 10 MW. The energy confinement time in ohmic discharges has reached 0.8s; but degradation has been observed with additional heating. Recently, combined heating (Padd up to 14.5 MW) allowed achievement of ion and electron temperatures of −7.5 keV at densities of ∼3 − 1019 m−3. Several proposals for improvements of the JET scientific performance are reported in the paper and summarised in the new development programme.