The basic concept of the PEM emplacement method and its long-term safety assessment

NUMO studied the basic concept of the PEM emplacement method which is a promising method for the emplacement of the EBS in a repository. In setting the concept, it is important not only to ensure the engineering feasibility but also to secure the long-term safety. Thus, NUMO carried out a preliminary simulation on chemical interaction between the EBS materials and residual materials to investigate the influences of residual materials on the performance of the EBS. In this paper, we report the results of the chemical simulation. (author)