|SRA Key Topic || SRA Topic|| SRA Topic priority|
| Monitoring (Topic 6 in the SRA)
- Monitoring Strategies and programmes for performance confirmation of the repository (Topic 6.1 in the SRA)
- Availability of monitoring technologies and techniques (Topic 6.2 in the SRA)
- Monitoring of engineered barrier systems (EBS) during operation (Topic 6.4 in the SRA)
Explanation of the contents of the activity
IAEA-Glossary on performance confirmation (PC): “Tests carried out at a repository, usually after waste emplacement but prior to license termination, to confirm that the repository is performing as anticipated when emplacement of waste was authorized.”
PC-monitoring is a subject of a comprising monitoring strategy and focuses mainly at the operational phase of a repository. Therefore, the programme and all the related activities to test / check the performance are to be started and completed as far as possible during this stage of the repository evolution. This could be based upon a given – often national waste management programme specific – approach and may reduce the requirements for monitoring in general.
The activity should also address the availability of techniques and comprises a compilation, thorough analysis, and evaluation. Based upon this, the necessity and appropriateness of potential new approaches or adaptation of consisting ones should be clarified, as a basis for further decisions.
Applicability of techniques for performance confirmation monitoring and for pre-closure management, e.g. decision making processes.
Identification of the possibilities for monitoring the EBS (behaviour, integrity, surveillance, input for safety evaluations) in the operational stage. Development of adequate monitoring procedures and techniques to fulfil the requirements. Development / adaptation / test /assessment of hard & software.
Short description of activity
- Expert review and evaluation of available results and acquired knowledge on monitoring with regard to performance confirmation (e.g. literature survey, MoDeRn-Project, other activities) and for underground applications
- Compilation of national monitoring approaches/strategies and their evaluation regarding performance confirmation
- Overview of the technical requirements that will need to be addressed when developing, selecting and implementing monitoring technologies applicable during the operational phase and the early post-closure phase
- General requirements for using monitoring techniques for decision making processes during the operational phase until final closure.
- Check the state-of-the-art of existing performance confirmation strategies and programmes (basic rules, regulatory requirements)
- Answering the questions: which processes and parameters are to be monitored, how and by which means (e.g. test plans), when is monitoring required (staged, continuously), who is responsible for what (performing the task, regulatory issues), how is stakeholder involvement possible, what are national/concept specific issues (e.g. pilot repository concept) or general issues
- Standards for performance confirmation and influencing issues (regulatory boundaries, scientific boundaries, uncertainties, technological advancements or restraints)
- Comparison of the potential monitoring needs with the available options and techniques thus highlighting gaps in knowledge of monitoring techniques that still need to be addressed
- Consequences for confirmation programmes: scientific-technological (open questions, continuous R&D, targeted R&D), social aspects, tests, experiments, analyses; benchmarking), check against license conditions
- Types of parameters (reduced set / general set / concept specific set, key parameters): thermal, hydraulic, (radio)chemical, rock (geo) mechanical, others (operational safety conditions and safeguard issues)
- Decision on which further activities to fill knowledge gaps (if necessary by targeted R&D), or required (TSWG, TEP): update of strategies, refinement and/or adaptation of programmes, formalization of approaches