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Conference Spotlight
Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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NRC approves V.C. Summer’s second license renewal
Dominion Energy’s V.C. Summer nuclear power plant, in Jenkinsville, S.C., has been authorized to operate for 80 years, until August 2062, following the renewal of its operating license by the Nuclear Regulatory Commission for a second time.
Yonezo Tsujikura
Nuclear Technology | Volume 136 | Number 2 | November 2001 | Pages 141-157
Technical Paper | Reactor Safety | doi.org/10.13182/NT01-A3234
Articles are hosted by Taylor and Francis Online.
When designing the safety system for the next generation of pressurized water reactors (PWRs), it is essential to rationalize the safety system by taking factors such as safety, reliability, and economy into account. To do so, a comprehensive methodology for designing an accident mitigation system was developed on the basis of the following studies. Threats to the reactor core, which are inherent to PWRs, were systematically analyzed. Following this, efforts to specify the requirements needed to mitigate the threats were made with the specification of components composing the mitigation systems. On the basis of a loss-of-coolant accident as an example of the severest accident, thermohydro analyses without any mitigation systems were made to determine the requirements needed to keep the core safe. Information related to the system's design parameters were successfully obtained. On the basis of these studies, candidates for mitigation systems that respond in accordance with the scales and phases in progress of accidents were systematically selected and discussed. In the future, the methodology presented herein may be extended to cover the structuring of overall plant safety systems.