Safety Cases for the Deep Disposal of Radioactive Waste: Where Do We Stand?

23-25 January 2007
Paris, France

Programme

Background

Disposal of long-lived radioactive waste in engineered facilities, or repositories, located deep underground in suitable geological formations, is being investigated world wide as a means to protect humans and the environment both now and in the future. The modern concept of the safety case for deep disposal was developed in the 1990s and first presented in the NEA document Confidence in the Long-term Safety of Deep Geological Repositories: Its Development and Communication.

Recently, there has been notable convergence in documents published nationally and internationally on the understanding and development of long-term safety cases for deep disposal. The NEA brochure Post-closure Safety Case for Geological Repositories (2004) defines and discusses the purpose and general contents of such studies. Similar concepts are presented in the IAEA Safety Requirement on Geological Disposal of Radioactive Waste (WS-R-4), co-sponsored by NEA. Following these developments, and more than 15 years after the OECD international symposium of 1989, it was appropriate to take stock of progress.

Scope

Symposium aims

The aims of the symposium were:

Sessions overview

Day 1 - 23 January 2007


Opening – Welcome addresses

OECD Nuclear Energy Agency
G.H. Marcus
Deputy Director-General

French Ministry of Research
D. Goutte
Director, Department of Energy, Transport, Environment, and Natural Resources

International Atomic Energy Agency
E. Amaral
Director of Radiation, Transport and Waste Safety

European Commission
S. Webster
Head of Unit "Fission", DG-Research

Session I: French National Programme on Deep Disposal Safety

Chair: H. Riotte (NEA)
Rapporteur: A. Hooper (Nirex)

Presentations

Session II: The Safety Case Concept and its Evolution

Chair: C. Ruiz Lopez (CSN)
Rapporteur: P. de Preter (ONDRAF/NIRAS)

Session II-a: The International Evolution

Presentations

Questions and Answers

Session II-b: The National Evolution

Presentations

Questions and Answers

Session II-c: Plenary Panel Discussion

Moderators: M. Sailer (Oeko Institut) and C. McCombie (Arius)
Rapporteur: R. Ferch (Consultant, Canada)

The aim was to give the floor to the audience: opinion, discussion, open questions. The moderators gave a short summary and set forth questions for discussion.

Day 2 - 24 January 2007


Session III: Recent Experiences in Developing a Safety Case


Session III-a: Approaches to Achieving Safety

Chair: P. Zuidema (Nagra)
Rapporteur: S. Voinis (Andra)

The presentations focussed on:

Presentations


Session III-b: The Scientific and Technical Basis for Assessing Safety

Chair: K-J. Röhlig (GRS-Köln)
Rapporteur: F. Mompeán (NEA)

The presentations focussed on:

Presentations:

Session III-c: Evaluating and Documenting the Confidence in Safety

Chair: H. Umeki (JAEA)
Rapporteur: J. Andersson (JA Streamflow AB)

The presentations focussed on:

Presentations

Poster Session

 

Day 3 - 25 January 2007

Session III-c: Evaluating and Documenting the Confidence in Safety (continued)

Presentations

Session IV: The Embedding of the Safety Case in Societal Dialogue and Decision Making

Chair: A. Hooper (Nirex)
Rapporteur: B. Stromberg (SKI)


Panel discussion

Moderator: E. Van Hove (University of Antwerp)
Rapporteur: C. Pescatore (NEA)

The aim was to give the floor to the audience: opinion, discussion, open questions. The moderator gave a short summary and set forth questions for discussion.

Session V: Report on the Meeting

Chair: A. van Luik (US-DOE)
Rapporteur: P. Swift (SNL)

An overview was provided of the themes, progress, and conclusions reflected during the symposium.


Programme

Last updated: 7 February 2007