For Korean nuclear fuel cycle project, it is necessary to design and evaluate the integrity of spent fuel storage. For the design and evaluation of spent fuel storage, it is necessary to evaluate the properties of various materials used in spent fuel storage. The materials previously considered in the design of nuclear power plants were limited to static properties and were listed in design and manufacturing code and standards. However, for the evaluation of the storage containers in scenarios such as transportation and events, dynamic material property evaluations are required. Research on the dynamic properties of materials is generally conducted in the fields of automotive and aerospace, and most of the studies are on metal materials under sheet conditions. Since the structural materials of the storage containers for used nuclear fuel are mostly composed of thick materials, consideration should be given to property evaluation methodology and quantitative comparison. In this study, the mechanical properties of stainless steel material with canister application were evaluated according to the strain rate, and the crack resistance evaluation was also performed. It was confirmed the changes in strength and crack resistance according to the increase in strain rate and observed differences in microstructural hardening behavior.

본 연구는 델파이 기법을 적용하여 국산재 공급 확대를 위한 정책을 제시하고 제시된 정책의 실현가능한 미래를 전망하였다. 연구방법은 국산재 관련 연구경험이 있는 연구자, 국산재 관련 행정부서 근무자 및 교육 분야 전문가 15명을 선정하여 2차에 걸쳐 설문조사를 실시하였다. 국산재 공급의 문제점과공급 확대를 위한 세부적인 정책을 도출하기 위하여 생산, 유통 및 소비부분으로 구분하여 설문하였으며, 도출된 정책은‘목재생산을 위한 인프라 구축’,‘수요예측에 따른 적정 조림정책’,‘권역별 목재 수집 단지 조성’및‘공공 건축물 등의 국산재 의무사용 등의 국산재 소비촉진 정책’등 이며, 제시된 정책의 실현 가능한 미래예측은 대부분의 정책이 2021년까지 실현 가능할 것으로 많은 전문가들이 예측하였다.