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Division Spotlight
Reactor Physics
The division's objectives are to promote the advancement of knowledge and understanding of the fundamental physical phenomena characterizing nuclear reactors and other nuclear systems. The division encourages research and disseminates information through meetings and publications. Areas of technical interest include nuclear data, particle interactions and transport, reactor and nuclear systems analysis, methods, design, validation and operating experience and standards. The Wigner Award heads the awards program.
Meeting Spotlight
Utility Working Conference and Vendor Technology Expo (UWC 2024)
August 4–7, 2024
Marco Island, FL|JW Marriott Marco Island
Standards Program
The Standards Committee is responsible for the development and maintenance of voluntary consensus standards that address the design, analysis, and operation of components, systems, and facilities related to the application of nuclear science and technology. Find out What’s New, check out the Standards Store, or Get Involved today!
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August 2024
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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.”
Huajian Chang (State Nuclear Power Technology R&D Cente/Tsinghua Univ), Yuquan Li, Bin Gao, Cheng Li, Yanfang Xue, Nang Wang (State Nuclear Power Technology R&D Center)
Proceedings | Advances in Thermal Hydraulics 2018 | Orlando, FL, November 11-15, 2018 | Pages 1155-1168
The passive safety system is more reliable and simpler than the conventional active safety system. However, the driving force in a passive safety is relatively low, some phenomena and the mechanisms remain unclear, the interactions and the synergistic effects even make the safety analysis complicated. Therefore, it calls a great demand to conduct both the separate and integral effect tests for assessing the passive safety system performance and validating the correlations or models used in the safety analysis codes. In this paper, the passive safety system test activities conducted for AP600, AP1000 and CAP1400 are reviewed. The ROSA, APEX and SPES were used for AP600 and AP1000 PXS integral test, and for CAP1400, the ACME was designed and built based on the previous test experiences. The LST was built for AP600 containment test, and the CERT was built for CAP1400 containment test with the detailed scaling analysis. The ULPU test facilities were used for AP600 and AP1000 IVR tests, and the FIRM used the real RV material for the CAP1400 IVR test. In this work, the main test facilities design and the test results for the passive safety PWR are presented, and the comparisons among the same type test facilities are also given to highlight the improvements of the passive safety tests.