LAUSR

The sustainable final disposal of high-level radioactive waste (HLW) remains an unresolved and highly controversially discussed issue, partly because of ecological, economic, and societal challenges and partly because of the risks the public associates with such disposal. Clearly, there will be little public acceptance of the project if citizens lack trust in responsible decision-makers and the site selection procedure. This endeavor will only be accepted if trust in the ongoing procedure is strengthened. We evaluated over 1800 comments from a German study (conducted in 2020) on the issue of final HLW disposal to answer the questions of how risk perceptions, trust, and acceptance are interrelated and what role other aspects, such as social values, play. By categorizing the comments, we obtained a different picture of opinions and identified the following needs circulating among the German population: the acceptance of a HLW repository or the site selection procedure depends particularly on the extent to which individual participants perceive the values of safety and fairness as fulfilled. When do they consider a repository safe, and when do they consider the procedure fair enough? The answers to these questions seem to depend strongly on the extent to which one’s own values are considered violated. The repository’s safety and the procedure’s fairness are essential. Moreover, instead on risks, respondents commented on safety. These concerns should be taken into account in the course of the site selection procedure to enable sustainable management and disposal of HLW.