The safety evaluation of spent fuel storage rack is performed for many power companies on the seismic loading previously. However, due to the inclusion of new loads. i.e., Safety/Relief Valve Actuation (SRV) and Loss-of-Coolant Accident (LOCA), the reevaluation is required according to the regulations of NRC and AEC. Instead of simplifying one rack as one beam with many degrees of freedom, all racks in the pool are discretized by the shell elements in ANSYS. In addition, hydrodynamic mass model between racks and between fuel and rack are included.

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