Nuclear Techniques ›› 2016, Vol. 39 ›› Issue (7): 70603-070603.doi: 10.11889/j.0253-3219.2016.hjs.39.070603

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Preliminary analysis of fuel management for a small modular molten salt fast reactor

SUN Guomin1,2, CHENG Maosong1, DAI Zhimin1   

  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
  • Received:2016-04-27 Revised:2016-05-09 Online:2016-07-10 Published:2016-07-08
  • Supported by:

    Supported by Strategic Pilot Science and Technology Project of Chinese Academy of Sciences (No.XDA02050)


Background: In a liquid fuel molten salt reactor, the fuel circulates in the primary loop, and it can be reprocessed and refueled online, therefore the fuel management of liquid fuel molten salt reactor differs from conventional solid fuel nuclear reactors. Purpose: This study aims to develope a new fuel management and burnup analysis code that considers the flow effect of molten salt and the online refueling and reprocessing for a small modular molten salt fast reactor. Methods: Based on the MCNP5 and ORIGEN2.1 code, a new fuel management code is developed to suit for liquid fuel molten salt reactor. Five operation modes for both the continuous online refueling and batch online refueling are studied. The keff and the burnup of some important nuclides during 30-a continuous operation with batch online refueling are analyzed. Results: The simulation results show that the small modular molten salt fast reactor can be operated within a small keff fluctuation both under the continuous refueling scheme with variable feed rating and under the constant batch refueling scheme. Conclusion: The newly developed code can be applied to the research of liquid fuel molten salt reactors. And the presented schemes provide a reference for liquid fuel molten salt reactor design and fuel management analysis.

Key words: Small modular reactor, Molten salt fast reactor, Burnup analysis, Fuel management

CLC Number: 

  • TL329.2