NUMERICAL SIMULATION OF DYNAMIC DEFORMATION OF SPENT FUEL TRANSPORTATION PACKAGE FOR NUCLEAR POWER PLANTS IN ACCIDENTAL MECHANICAL IMPACTS

The numerical simulation results and their analysis are presented for the dynamic deformations of TUK-117 package, intended for transportation of spent nuclear fuel from Nuclear Power Plants, subjected to the accidental 9-meter drops onto an unyielding surface at different angles. The main attention of the paper is focused on the analysis of container shock limiters deformation behavior. It is demonstrated that the maximal loading impacts the package at side drop. For the side drop, the maximal strain levels are determined for the different construction elements, including the cask’s body and the bolts securing the sealing lid. Construction dynamic behavior simulation was carried out based on LS-DYNA code, version 970 [1].