[2D20-23] Waste Disposal

[2D23] Study on Design Options in the Context of Developments in Regulatory for Mid-depth underground disposal

- (3) Approach to Extracting and Filtering Design Options -

*Keiichiro Shibata¹, Taichi Esaki¹, Yoshikazu Hironaka², Katsuhiko Ishibashi³ (1. KAJIMA, 2. RWMC, 3. TEPSCO)

Keywords:Mid-depth underground disposal, Engineered barrier, Conceptual design, Design option, Filtering, Cost-benefit performance

In the regulatory standard for Mid-depth underground disposal, it is necessary to formulate a design with superior performance in controlling the migration of radioactive materials by comparing multiple design options of engineered barrier to achieve ALARA (as low as reasonably achivable). In this study, multiple design options of engineered barrier with different specifications were extracted and compared, and a series of studies to filter the better design was attempted.