Nuclear Engineering and Technology

  • 제46권1호
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  • Pages.73-80
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  • 2014
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  • 1738-5733(pISSN)
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  • 2234-358X(eISSN)
한국원자력학회 (Korean Nuclear Society)
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IMPACT ANALYSES AND TESTS OF CONCRETE OVERPACKS OF SPENT NUCLEAR FUEL STORAGE CASKS

  • 투고 : 2013.01.15
  • 심사 : 2013.09.11
  • 발행 : 2014.02.25
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초록

A concrete cask is an option for spent nuclear fuel interim storage. A concrete cask usually consists of a metallic canister which confines the spent nuclear fuel assemblies and a concrete overpack. When the overpack undergoes a missile impact, which might be caused by a tornado or an aircraft crash, it should sustain an acceptable level of structural integrity so that its radiation shielding capability and the retrievability of the canister are maintained. A missile impact against a concrete overpack produces two damage modes, local damage and global damage. In conventional approaches [1], those two damage modes are decoupled and evaluated separately. The local damage of concrete is usually evaluated by empirical formulas, while the global damage is evaluated by finite element analysis. However, this decoupled approach may lead to a very conservative estimation of both damages. In this research, finite element analysis with material failure models and element erosion is applied to the evaluation of local and global damage of concrete overpacks under high speed missile impacts. Two types of concrete overpacks with different configurations are considered. The numerical simulation results are compared with test results, and it is shown that the finite element analysis predicts both local and global damage qualitatively well, but the quantitative accuracy of the results are highly dependent on the fine-tuning of material and failure parameters.

키워드

참고문헌

  1. US DOE, Accident analysis for aircraft crash into hazardous facilities, DOE-STD-3014- 2006 (2006).
  2. Q.M. Li et al., "Local impact effects of hard missiles on concrete targets," Int. J. Imp. Eng. , Vol. 32, pp. 224-284 (2005). https://doi.org/10.1016/j.ijimpeng.2005.04.005
  3. Final Safety Analysis Report for HI-STORM 100 Cask System, Rev. 8. Holtec International (2010).
  4. Final Safety Analysis Report for MAGNASTOR, Revision 10B, NAC International, (2010).
  5. NEI, "Deterring terrorism: Aircraft crash impact analyses demonstrate nuclear power plant's structural strength," NEI (2002).
  6. K Shirai et al. "Safety analysis of dual purpose metal cask subject to impulsive load due to aircraft engine crash," Journal of Power and Energy Systems, Vol. 3, pp. 72-82 (2009). https://doi.org/10.1299/jpes.3.72
  7. T Sugano et al. "Local damage to reinforced concrete structures caused by impact of aircraft engine missiles: Part 2 Evaluation of test results," Nuclear Engineering Design, Vol. 140, pp. 407-423 (1993). https://doi.org/10.1016/0029-5493(93)90121-O
  8. M. Rebecca et al. "Survey of four damage models for concrete," SAND2009-5544, Sandia National Laboratory (2009).
  9. Century Dynamics Ltd., Horsham. AUTODYN: Theory Manual, 4.3 edition (2000)
  10. Z. Tu and Y. Lu, "Modifications of RHT material model for improved numerical simulation of dynamic response of concrete," Int. J. Imp. Eng., Vol. 37, pp. 1072-1082 (2010). https://doi.org/10.1016/j.ijimpeng.2010.04.004
  11. T. Elshenawy and Q. M. Li, "Influences of target strength and confinement on the penetration depth of an oil well perforator," Int. J. Imp. Eng., Vol. 54, pp.130-137 (2013). https://doi.org/10.1016/j.ijimpeng.2012.10.010

피인용 문헌

  1. Spent Nuclear Fuel Management in South Korea: Current Status and the Way Forward vol.37, pp.5, 2015, https://doi.org/10.4491/KSEE.2015.37.5.312
  2. Closing the Cycle: How South Australia and Asia Can Benefit from Re-inventing Used Nuclear Fuel Management vol.4, pp.1, 2017, https://doi.org/10.1002/app5.164
  3. Numerical Analyses of a Shield Building Subjected to a Large Commercial Aircraft Impact vol.2018, pp.1875-9203, 2018, https://doi.org/10.1155/2018/7854969