Development of Design & Safety Analysis Supporting System for Casks

Casks are containers for transporting and storing radioactive materials such as spent fuel, and they contain a great quantity of radioactive materials. So, they are subject to strict technical standards stipulated in laws and regulations. For this reason, when designing casks, various safety analyses are carried out to verify their safety. Each safety analysis is closely related with the others with an individual result of analysis being fed back as a given condition for another analysis. This results in a huge amount of analysis and design work. In order to cope with this situation, Mitsubishi Heavy Industries has developed a design and safety analysis supporting system 'CADDIE'(Cask Computer Aided Design, Drawing and Integrated Evaluation System), with the following objectives: (1) Enhancement of efficiency of the design and safety analysis (2) Further advancement of design quality (3) Response to the diversification of design requirements The system is presented below.