Technical approach associated with the adoption of reversibility and retrievability, and the role of engineering in contributing to performance evaluation (2). Role of engineering in contributing to performance evaluation

At the research presentation meeting of the Radioactive Waste Management Funding Center (RWMC) held in December 2019, the results of the survey and research, which were summarized from the perspective of the title were introduced. This paper, as Part 2 of the series, deals with the role of engineering technology toward the performance evaluation (the above subtitle). As part of the project commissioned by the Agency for Natural Resources and Energy, RWMC is working to develop a quality assurance system and monitoring technology relating to manufacturing and construction technology in the geological disposal business. RWMC aims to realize the engineering approach of constructing a quality assurance system for geological disposal facilities that require long-term safety after closure. This paper organized the theory by positioning the challenges such as mutually related quality assurance, monitoring, and performance confirmation as the challenges to contribute to the judgment of the final closure of facilities (an effort to contributes to more reliable performance evaluation in the development of safety cases), and discussed the direction of future research and development. (A.O.)