Site selection procedures for deep geological repositories (DGRs) that aim to find the site with the best possible safety, out of a set of possible sites, will face one challenge: To compare the safety of two sites. While at the beginning of the selection process, it may be possible to reduce the number of sites by means of indicators that map geoscientific parameters against some agreed indicator standard, sooner or later, when the number of potentially best possible sites becomes smaller, safety needs to be compared between two (or more) sites.

This session solicits oral presentations by (safety) scientists whose research contributes to the challenge of determining the safer site of two.

The session goals:

To provide a platform for scientific exchange in this field, which has not experienced abundant scientific exchange so far.

To raise awareness in the wider community for the challenge under focus in this session.

To discuss the opportunities for increasing the efficiency of site selection procedures by addressing the issue early.