Simplified Computer Codes for Cask Impact Analysis

Shipping casks for radioactive materials are regulatively required to maintain their integrity against the tests where they are dropped onto unyielding surfaces from the determined heights and puncture tests and so on. Analyses of those tests have been carried out using detailed computer codes (such as DYNA2D, DYNA3D, HONDO and PISCES) or simplified computer codes. Detailed computer codes are suitable for comparing experimental data with analytical results. Simplified computer codes are suitable for design and safety analysis by performing parametric studies. As mentioned above in safety analysis of cask impacts, four kinds of simplified computer codes as shown in Fig. 1 have been developed in the Japan Atomic Energy Research Institute. They are going to be used for safety analysis of storage casks in the Nuclear Power Engineering Corporation.