Nuclear Engineering and Technology

Korean Nuclear Society (한국원자력학회)
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Analysis methodology of local damage to dry storage facility structure subjected to aircraft engine crash

  • Almomani, Belal (Department of Nuclear Engineering, Kyung Hee University) ;
  • Kim, Tae-Yong (Department of Nuclear Engineering, Kyung Hee University) ;
  • Chang, Yoon-Suk (Department of Nuclear Engineering, Kyung Hee University)
  • Received : 2021.07.13
  • Accepted : 2021.10.18
  • Published : 2022.04.25
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Abstract

The importance of ensuring the inherent safety and security has been more emphasized in recent years to demonstrate the integrity of nuclear facilities under external human-induced events (e.g. aircraft crashes). This work suggests a simulation methodology to effectively evaluate the impact of a commercial aircraft engine onto a dry storage facility. A full-scale engine model was developed and verified by Riera force-time history analysis. A reinforced concrete (RC) structure of a dry storage facility was also developed and material behavior of concrete was incorporated using three constitutive models namely: Continuous Surface Cap, Winfrith, and Karagozian & Case for comparison. Strain-based erosion limits for concrete were suitably defined and the local responses were then compared and analyzed with empirical formulas according to variations in impact velocity. The proposed methodology reasonably predicted such local damage modes of RC structure from the engine missile, and the analysis results agreed well with the calculations of empirical formulas. This research is expected to be helpful in reviewing the dry storage facility design and in the probabilistic risk assessment considering diverse impact scenarios.

Keywords

Acknowledgement

This research was supported by "Human Resources Program in Energy Technology" of the Korea Institute of Energy Technology Evaluation and Planning (KETEP), granted financial resource from the Ministry of Trade, Industry & Energy, Republic of Korea (No. 20184030202170).

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