Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 2015, Vol. 26 ›› Issue (6): 060601 doi: 10.13538/j.1001-8042/nst.26.060601

• NUCLEAR ENERGY SCIENCE AND ENGINEERING • Previous Articles     Next Articles

Experimental study on fragmentation behaviors of molten LBE and water contact interface

HUANG Wang-Li ,1, 2, 3 SA Rong-Yuan,2, 3  ZHOU Dan-Na, 2, 3 JIANG Hua-Lei, 2, 3  HUANG Qun-Ying  2, 3   

  1. 1University of Science and Technology of China, Hefei 230026, China
    2Key Laboratory of Neutronics and Radiation Safety, Institute of Nuclear Energy Safety Technology, Chinese Academy of Sciences, No. 350 Shushanhu Road, Hefei 230031, China
    3Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institution, Suzhou 215006, China
  • Contact: SA Rong-Yuan E-mail:rongyuan.sa@fds.org.cn
  • Supported by:

    Supported by National Natural Science Foundation of China (No. 11302224) and Strategic Priority Science & Technology Program of the Chinese Academy of Sciences (No. XDA03040000)

HUANG Wang-Li, SA Rong-Yuan, ZHOU Dan-Na, JIANG Hua-Lei, HUANG Qun-Ying . Experimental study on fragmentation behaviors of molten LBE and water contact interface.Nuclear Science and Techniques, 2015, 26(6): 060601     doi: 10.13538/j.1001-8042/nst.26.060601
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Abstract:

Based on the design of CLEAR (China LEAd-based Reactor), it is important to study the molten LBE (Lead- Bismuth Eutectic)/water interaction following an incidental steam generator tube rupture (SGTR) accident. Experiments were carried out to investigate the fragmentation behavior of the molten LBE/water contacting interface, with a high-speed video camera to record the fragmentation behavior of 300–600 °C LBE at 20°C and 80 °C of water temperature. Violent explosion phenomenon occurred at water temperature of 20 °C, while no explosion occurred at 80 °C. Shapes of the LBE debris became round at 80 °C of water temperature, whereas the debris was of the needle-like shape at 20°C. For all the molten LBE and water temperatures in the present study, the debris sized at 2.8–5.0mm had the largest mass fraction. The results indicate that the dominant physical mechanism of the molten LBE fragmentation was the Kelvin-Helmholtz instability between LBE/water direct contact interface.

Key words: Steam generator tube rupture, Molten LBE, Fragmentation, Steam explosion, Interfacial instability