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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.”
Yoshiyuki Asaoka, Kunihiko Okano, Tomoaki Yoshida, Ken Tomabechi
Fusion Science and Technology | Volume 30 | Number 3 | December 1996 | Pages 853-863
Fuel Cycle and Tritium Technology | doi.org/10.13182/FST96-A11963044
Articles are hosted by Taylor and Francis Online.
Requirements of tritium breeding ratio and the initial inventory of tritium for early fusion power reactors were investigated with a calculation model. The results of calculated time-dependence of tritium inventory were examined, in particular from the following three points of view; the doubling time of tritium inventory in the storage system to provide the initial inventory of the next plant, the recovery time in which the tritium inventory in the storage system recovers to the initial value and the minimum tritium storage required during the operation. The following limits were adopted to evaluate the results, i.e., the doubling time shorter than 3 years, the recovery time shorter than 1 year and the minimum storage larger than the tritium for 50 days bum up. For a reference case, which assumes reasonable performance parameters of the fuel processing subsystems, the requirements for the tritium breeding ratio and the initial tritium inventory were estimated to be 1.10 and 27.6 kg, respectively. If a poor tritium processing system is assumed, the requirements become inevitably higher. On the other hand, mitigation of the requirements is not conspicuous even with a good processing system. The obtained results suggest that the high performance tritium processing is indispensable, but still insufficient for achievement of tritium self-sufficiency. From the point of view of tritium fuel supply, a blanket system with high tritium breeding ratio is also indispensable in early stage of fusion power reactor development, in order to introduce fusion reactors at a reasonable pace.