Abstract

Final repositories for spent nuclear fuel are approaching implementation. A prerequisite for these advancements is that it has been shown that the repository can be constructed and operated in practice in such a way that safety can be assured both during operation and over very long time scales. The success rests on decades of structured and objective-driven research and development. A key element of the research strategy has been to ensure adequate in-house competence and expertise. Also, openness and international cooperation are essential. Workable procedures for data qualification, version control as well as internal and external peer review have gained importance. When the programmes now enter a new phase of construction and operation new challenges will arise. Even if the implementing organisations would need to keep a core competence on post closure safety assessment international cooperation will be even more important on developing, sharing and managing the knowledge needed.

Highlights

  • Final repositories for spent nuclear fuel are approaching implementation

  • In 2011, SKB applied for a permit to build a KBS-3 type final repository for spent nuclear fuel at the Forsmark site

  • The application has been examined by the Swedish Radiation Safety Authority (SSM) under the Act on Nuclear Activities and by a Swedish Land and Environmental Court under the Environmental Code

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Summary

Introduction

Final repositories for spent nuclear fuel are approaching implementation. In 2011, SKB applied for a permit to build a KBS-3 type final repository for spent nuclear fuel at the Forsmark site. The Land and Environmental Court approved in its statement parts relating to the choice of Forsmark as the site for the repository, post-closure aspects related to the rock and the buffer and the environmental impact assessment. Regarding the long-lived intermediate level wastes a safety assessment of a conceptual repository design will be presented during 2019. This will form the basis for further development of the engineered barriers, waste acceptance criteria, and the siting process. The success of the programmes rests on decades of structured and objective-driven research and development, including both theoretical assessments and practical test in the laboratory and in full scale This has been possible by a dedication to bring the repository programme to a. Conclusion with a structured siting strategy, sufficient and long term funding, and a clear strategy for research and development

Research strategy
Objectives
In-house competence
Openness
International cooperation
Knowledge management tools developed
Data qualification
Site descriptive modelling
Peer review
Requirements and quality control of production and installation
Safety case needs to be up to date during the entire operational time
Monitoring during construction and operation
Relation between operational safety and post-closure safety
Proved quality control as an essential part of the safety case
Implementation and optimisation
Knowledge management and in-house competence needed
Role of international cooperation
Conclusions
Full Text
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