PROPOSED GUIDELINES FOR ADVANCED RADIATION SHIELDING SAFETY EVALUATION TECHNIQUE BY MONTE CARLO METHODOLOGY

Guidelines for radiation shielding evaluation by Monte Carlo method was designed and developed for practical radiation shielding for radioactive material transport casks. The guidelines consist of current technical advancement on estimating the dose equivalent rates around the surface of a transport cask. The guidelines have two unique features: one is that the procedure of the radiation shielding analyses is illustrated as flow charts, which can be used as check sheets to validate the analyses. By following the flow charts, the applicant can perform the radiation shielding analyses properly and the regulatory agency can check whether the analyses performed by the applicant are proper or not. The other is that the guidelines provide documentation of the details of results of benchmark analyses for transport casks by Monte Carlo method including measurements, modeling descriptions for the analyses, results of analyses and evaluation. The guidelines could be useful to validate the procedure and the results of radiation shielding analyses for transport casks.