Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2018 Impact factor 0.961

Nuclear Science and Techniques ›› 2019, Vol. 30 ›› Issue (11): 163

• NUCLEAR ENERGY SCIENCE AND ENGINEERING •

Temperature analysis of the HTR-10 after full load rejection

Xiang-Cheng Zhang, Ding She, Fu-Bing Chen, Lei Shi, Yu-Jie Dong, Zuo-Yi Zhang

1. Institute of Nuclear and New Energy Technology, Collaborative Innovation Center of Advanced Nuclear Energy Technology, Key Laboratory of Advanced Reactor Engineering and Safety, Ministry of Education, Tsinghua University, Beijing 100084, China
• Received:2019-03-04 Revised:2019-05-14 Accepted:2019-06-01
• Contact: Fu-Bing Chen E-mail:chenfubing@tsinghua.edu.cn
• Supported by:
This work was supported by the Chinese National S&T Major Project (No. ZX069).
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Xiang-Cheng Zhang, Ding She, Fu-Bing Chen, Lei Shi, Yu-Jie Dong, Zuo-Yi Zhang. Temperature analysis of the HTR-10 after full load rejection.Nuclear Science and Techniques, 2019, 30(11): 163

Abstract: The HTR-10 is a small modular high-tempera‘ture reactor located in Tsinghua University, in China. After the reactor ran continuously for 72h at full power in the commissioning stage, a full load rejection test was conducted by manually disconecting the generator from the grid, In this study, reactor transients were analyzed using the THERMIX model. Some of the important thermal-fiuid phenomena that occurred after the test initiation are discussed here, induding the natural convection of helium in the core and the temperature redistribution in the reactor. Temperatures reproduced for the measuring points arranged in the intemals were in agreement with the test data. This demonstrated that the code and calculation model are suitable for posttest analysis applications. Regarding the safety features of the reactor, there was a large margin between the predicted maximum fuel temperature of 997 ℃ and the safety limit of 1620 ℃.