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Two steps forward for U.K. advanced nuclear
This week, two significant announcements have emerged from the United Kingdom’s advanced reactor sector.
On June 14, Rolls-Royce, the United Kingdom National Nuclear Laboratory, and the Japan Atomic Energy Agency announced that they had signed two trilateral memorandums of cooperation to collaborate on “advanced modular reactor (AMR) technology, specifically high-temperature gas-cooled reactors (HTGR), and the coated particle fuel these reactors will use.”
Separately, on June 16, Bellevue, Wash.–based TerraPower announced that its Natrium reactor design has been formally submitted for U.K. regulatory review. The company also announced the formation of a new subsidiary, TerraPower UK Ltd.
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.