HI-STAR 100 spent fuel transport cask analytical evaluation for drop events

Shah, Meet; Klymyshyn, Nicholas; Adkins, Harold E.; Koeppel, Brian J.

doi:10.1179/174651007x191134

Cited by 2 publications

(1 citation statement)

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“…At present, there have been some studies on the simulation analysis of the transport drop of spent fuel assembly, but mainly for the cask itself. For example, Shah et al [2] studied the dynamic response of the vertical drop of the transport cask and established three size-scale models to explore the size effect of the small-scale drop test, but the results showed that it was almost impossible to predict the response of the 1:1 prototype by reducing the model. Some scholars considered that the spent fuel assembly in the transport cask is more important, and based on the complexity of the overall structure, proposed the method of model simplification.…”

Section: Introductionmentioning

confidence: 99%

Simulation of Spent Fuel Assembly Transport Vertical Drop Based on LS-DYNA

Wang

Chi

et al. 2023

J. Phys.: Conf. Ser.

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The finite element technology is used to carry out the drop simulation and safety assessment of the spent fuel assembly and its transport cask. In view of the problem of how to reasonably simplify the finite element model, a more reasonable and accurate multistage simplified model is proposed for the spent fuel assemblies packed densely in the transport cask, which needs to be analyzed synchronously when dropping. First, the “key” spent fuel assembly is retained, and the “unimportant” assembly is simplified as a cylindrical entity. Based on this, the structure will continue to be simplified and a 1/4 near-earth model containing all characteristics will be established. Then, the LS-DYNA software is used for explicit dynamic analysis of vertical drop conditions. It is concluded that the failure risk of the spacers is the greatest. Therefore, the purpose of this paper is to propose a multistage simplified method for spent fuel assembly and its transport cask, which can provide a reference for the structural integrity analysis of the spent fuel assembly transport drop conditions.

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Section: Introductionmentioning

confidence: 99%