Nuclear Techniques ›› 2017, Vol. 40 ›› Issue (4): 40602-040602.doi: 10.11889/j.0253-3219.2017.hjs.40.040602

• NUCLEAR ENERGY SCIENCE AND ENGINEERING • Previous Articles     Next Articles

Xenon analysis of thorium molten salt experiment reactor-liquid fuel

GUO Chen1,2,3, JI Ruimin1,2,3, CHEN Jingen1,2,3, LIU Guimin1,2,3   

  1. 1 Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Jiading Campus, Shanghai 201800, China;
    2 University of Chinese Academy of Sciences, Beijing 100049, China;
    3 Chinese Academy of Sciences Innovative Academies in TMSR Energy System, Shanghai 201800, China
  • Received:2016-12-26 Revised:2017-02-25 Online:2017-04-10 Published:2017-04-07
  • Supported by:

    Supported by Strategic Priority Research Program of Chinese Academy of Sciences (No.XDA02010000), National Natural Science Foundation of China (No.91326201), the Frontier Science Key Program of Chinese Academy of Sciences (No.QYZDY-SSW-JSC016)

Abstract:

Background: Thorium molten salt reactor-liquid fuel (TMSR-LF) is a thermal molten salt reactor (MSR) with on-line reprocessing to extract waste and poison elements. Helium bubbling technique is considered to extract waste gas i.e., Xe, Kr, from the reactor core in order to improve neutron economics. Purpose: This study aims to implement the MSRE 135Xe poison model, and apply it on TMSR-LF1 of Shanghai Institute of Applied Physics (SINAP) to estimate xenon poison and effective multiplication factor. Methods: A 135Xe poison model with helium bubbling technique was built based on the molten salt reactor experiment (MSRE) research conducted at the Oak Ridge National Laboratory (ORNL) in the 1960s. Compared with present simulation which ignores the 135Xe diffusion behaviors in the fluid salt and graphite, this model provides a better description for a MSR. The nuclear reaction from Scale6.1 and diffusion process on the MATLAB platform were combined for 135Xe analysis in TMSR-LF1. Results: The result shows that helium bubbling technique can remove 135Xe and reduce xenon poison effectively. Most of 135Xe will stay in graphite. Conclusion: Xenon poison model considering 135Xe diffusion and flow effect is reasonable.

Key words: Molten salt reactor, Xenon poison, Helium bubbling, On-line reprocessing, Effective multiplication factor

CLC Number: 

  • TL32