Evaluation of the Paducah Tiger Overpack for Accident Conditions

An evaluation of the accident conditions for the Paducah Tiger Overpack is performed using ANSYS/LS-DYNA. The accident conditions include the 30-foot drop onto an unyielding surface followed by a 40-inch drop onto a six inch diameter steel pin. The objective is to identify the clearance between the valve at the end of the cylinder and the overpack after both accident conditions. The model is comprised of a foam overpack containing a ferritic steel cylinder. The foam overpack also contains a system of stiffeners. The results indicate that the valve will maintain sufficient clearance to maintain the integrity of the valve at the end of the cylinder.

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