Nuclear Engineering and Technology

  • 제54권10호
  • /
  • Pages.3766-3777
  • /
  • 2022
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  • 1738-5733(pISSN)
  • /
  • 2234-358X(eISSN)
한국원자력학회 (Korean Nuclear Society)
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Sensitivity of SNF transport cask response to uncertainty in properties of wood inside the impact limiter under drop accident conditions

  • Lee, Eun-ho (Department of Mechanical Engineering, Yonsei University) ;
  • Ra, ChiWoong (Department of Mechanical Engineering, Yonsei University) ;
  • Roh, Hyungyu (Department of Mechanical Engineering, Yonsei University) ;
  • Lee, Sang-Jeong (Department of Mechanical Engineering, Yonsei University) ;
  • Park, No-Choel (Department of Mechanical Engineering, Yonsei University)
  • 투고 : 2022.04.07
  • 심사 : 2022.05.27
  • 발행 : 2022.10.25
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초록

It is essential to ensure the safety of spent nuclear fuel (SNF) transport cask in drop situation that is included in transport accident scenarios. The safety of the drop situation is affected by the impact absorption performance of impact limiters. Therefore, when designing an impact limiter, the uncertainty in the material properties that affect the impact absorption performance must be considered. In this study, the material properties of the wood inside the impact limiter were selected as the variables for a parametric study. The sensitivity analysis of the drop response of the SNF transport cask with impact limiter was performed. The minimum wood strength required to prevent a direct collision between the cask and floor was derived from the analysis results. In addition, the plastic strain response was analyzed and strain-based evaluation was performed. Based on this result, the critical values of wood properties that change the impact dynamic characteristics were investigated. Finally, the optimal material properties of wood were obtained to secure the structural safety of the SNF transport cask. The results of this study can contribute to the development of SNF transport cask, thereby ensuring safety in transport accident conditions.

키워드

과제정보

This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) (No. NRF-2019M2D2A2048296).

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