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Licensed Unlicensed Requires Authentication Published by De Gruyter March 13, 2023

Study on the accidents analyses of a single channel for XADS by using MPC-LBE code

  • Ling Zhang , Tianxin Song , Zhixing Gu EMAIL logo , Jianing Dai , Wenlan Ou , Qiwen Pan and Zhengyu Gong
From the journal Kerntechnik


Accelerator Driven sub-critical System (ADS), which employs the high-energy proton beam generated by accelerator to bombard the target nucleus and generate spallation neutrons as external neutrons to drive and maintain the operation of its sub-critical reactor, is of great significance in nuclear waste treatment and disposal. As the instability of proton beam would affect the power level of the reactor and threaten the safety of ADS, Beam Trip (BT) and Beam OverPower (BOP) are commonly considered to be its two typical transient accidents. As for the sub-critical reactor, the Transient OverPower (TOP) is also one of typical transient accidents that should be considered, which is mainly caused by reactivity insertion under certain cases, such as SGTR (Steam Generator Tube Rupture) accident. For the subcritical reactors, the transient evolution behaviors are strongly affected by the subcriticality value. On the one hand, the subcriticality values of ADS design should take safety margin and power gain into consideration. On the other hand, the subcriticality value is variable with the burnup of reactors. So it is necessary to study the safety characteristics of the subcritical reactors under different subcriticality values, in this paper, the transient safety characteristics of a single channel for XADS under BT, BOP and TOP accidents of different subcriticality values were investigated by using MPC-LBE code.

Corresponding author: Zhixing Gu, College of Nuclear Technology and Automation Engineering, Chengdu University of Technology, Chengdu 610059, China, E-mail:

Funding source: Natural Science Foundation of Sichuan Province

Award Identifier / Grant number: No.2022NSFSC0253


The authors would like to thank the Natural Science Foundation of Sichuan Province (No.2022NSFSC0253).

  1. Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.

  2. Research funding: This work was financially supported by the Natural Science Foundation of Sichuan Province (No.2022NSFSC0253).

  3. Conflict of interest statement: The authors declare no conflicts of interest regarding this article.


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Received: 2022-09-17
Published Online: 2023-03-13
Published in Print: 2023-04-25

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