Commentaries: Art. 11

In order to guarantee long-term safety, the site for a deep geological repository must meet the following requirements:
1. sufficient extent of suitable host rock;
2. favourable hydro-geological conditions;
3. long-term geological stability.
A deep geological repository must be designed to ensure that:
1. it complies by analogy with the principles of Article 10 paragraph 1;
2. it guarantees long-term safety through multiple passive safety barriers;
3. steps to ease surveillance and repairs of the repository, or for the recovery of the waste, in no way impair the effectiveness of the passive safety barriers after closure of the repository;
4. it can be closed within a period of a few years.
ENSI shall issue guidelines that specify:
1. detailed design principles for deep geological repositories;
2. the requirements for proof of the long-term safety deep geological repositories.¹

Amended by No I of the O of 31 May 2024, in force since 1 July 2024 (AS 2024 280). ↩

Art. 11