For Official Use NEA/RWM/CLAYCLUB/A(2010)1. Integration Group for the Safety Case (IGSC) 13-Jul-2010

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1 For Official Use English - Or. English For Official Use NEA/RWM/CLAYCLUB/A(2010)1 Organisation de Coopération et de Développement Économiques Organisation for Economic Co-operation and Development 13-Jul-2010 English - Or. English NUCLEAR ENERGY AGENCY RADIOACTIVE WASTE MANAGEMENT COMMITTEE Cancels & replaces the same document of 09 June 2010 Integration Group for the Safety Case (IGSC) 20th Meeting of the NEA Clay Club Toronto, Canada September 2010 elizabeth.forinash@oecd.org JT Document complet disponible sur OLIS dans son format d'origine Complete document available on OLIS in its original format

2 20 th Meeting of the NEA Clay Club September 2010 Toronto, Canada hosted by NWMO Practical Details: Agenda Meeting Start: 08:30, Tuesday, 21 September 2010 Meeting End: 17:00, Thursday, 23 September 2010 Location: NWMO offices, Toronto, Canada (link to map) Supporting documents can be found at: Tuesday, 21 September 2010 OPENING, OVERVIEW 09:00 1. Opening of Meeting Chair and NEA Secretariat 15 minutes a. Welcome b. Adoption of CC19 summary record, CC20 agenda, etc. Summary Record of CC 19: NEA/RWM/CLAYCLUB(2010)1 Agenda for CC20: NEA/RWM/CLAYCLUB/A(2010)1 09:15 2. Current Developments, On-going and Future IGSC Projects NEA Secretariat Update on projects of interest: AMIGO brochure, EBS brochure, Cementitious Materials, MeSA 15 minutes, slides Updated IGSC Mandate: NEA/RWM/IGSC(2008)5 IGSC PoW: NEA/RWM/IGSC(2007)16/REV1 IGSC Status Report: NEA/RWM(2010)1 List of upcoming meetings of RWMC and its working parties 2

3 09:30 3. International Projects : Euratom Framework Programme 7 C. Davies 30 minutes Status of the FP7 and IGDTP activities ( ) and opportunities CLAY CLUB ACTIVITIES 10:00 4. International Conference on Natural and Engineered Clays for Confinement of Radioactive Waste P. Landais. Observations, reactions, implications for future Clay Club work 15 minutes Link to website 10:15 5. CLAYTRAC Project M. Mazurek 15 minutes Publication of results in a technical journal: report on progress 10:30 6. Self-Sealing Report 15 minutes a. Status of publication and distribution of report NEA Secretariat (15 min) b. Lessons Learned; Discussion and decisions on any further publication or distribution of results P. Landais (15 min) Link to electronic version of final report 10:45 Coffee break ½ hour 11:15 7. TOPICAL SESSION: Anomalous Heads in Clay Formations Chair: M. Jensen, NWMO Rapporteur: S. Norris, NDA This session will explore the phenomena of anomalous or abnormal heads in clay formations. The detection and interpretation of such situations -- and their causes-- can give insights for site characterisation and repository performance in terms of, for example, site stability and solute migration. The objective of the session is to define the key issues related to anomalous heads and to assess (preliminarily) their relevance to geological repositories. The Canadian programme for the Bruce nuclear site is taken as a central case study. An overview will also be provided of experience and interest from other national programmes. The 3

4 outcomes are expected to inform a Clay Club decision on whether further work in this area should be pursued. Presentations and a summary of discussions from the topical session will be documented as part of the summary record for the meeting. 7.1 Presentations and Case Study 25 minutes each (15 minute for presentation, 10 minutes for questions) 11:15 11:40 12:05 12:30 a. Nagra s Historical Experience with Under- and Over-Pressures Andreas Gautschi, Nagra b. Relevant phenomena and causes -- Chris Neuzil (USGS) c. Hydraulic Resolutions and Field Measurements -- Rick Beauheim (SNL) d. Field Measurement -- Ken Raven (Intera Engineering) 12:55 Lunch 7.1 Presentations and Case Study (continued) 25 minutes each (15 minute for presentation, 10 minutes for questions) 14:00 14:25 e. Simulations -- Jon Sykes/Stefano Normani (University of Waterloo) f. Paleohydrogeology (H-M coupling) -- Son Nguyen (CNSC) 14:50 g. Anomalous head pressures in the Callovo- Oxfordian P. Landais or Scott Altmann, Andra 15:15 Coffee break ½ hour 15: Discussion 45 minutes a. Summary of main points and issues raised in presentations Session rapporteur b. Discussion and conclusions regarding significance of phenomena, degree of understanding and interest/need for further Clay Club work on the topic Session chair 4

5 16:30 8. Country Reports ½ hour Country Reports members are reminded of the agreement last year that oral reports will be provided only for significant changes/advances, and will be limited to several minutes/slides. More detailed information and status reports should be provided in written format to the Secretariat in advance of the meeting to be made available. 17:00 Adjourn Clay Club Dinner (hosted by NWMO) A group dinner will be planned. The evening will include an informal commemoration of the 20 th Anniversary of the Clay Club. An invitation to participate will be extended to past chairpersons and perhaps founding members of the Clay Club. The Secretariat welcomes suggestions and contact information for those outside the current membership who might be invited. Clay Club members are also invited to share their recollections, photographs, etc. to be compiled. Further details on the dinner will be provided in advance of the meeting. Wednesday, 22 September :00 9. Special Country Report: Overview of the Canadian Programme 1 hour An overview will be provided on the Canadian radioactive waste disposal programmes, including the NWMO Adaptive Phased Management concept and implementation plans. An introduction will also be given to the LL/ILW deep geological repository at Bruce in terms of site characterisation, safety assessment, engineering and public engagement. FUTURE CLAY CLUB ACTIVITIES 10: Clay Club Workshop on Microscopic Observations and Imaging Techniques for Clays T. Schaefer a. Status of logistics and practical details i. Confirmation of host and location ii. Confirmation of dates 1 hour Outcomes of planning meeting in Nantes: NEA/RWM/CLAYCLUB(2010)2 5

6 iii. Financing and consultant support b. Proposed workshop programme and products i. Length and format ii. Session topics and suggested speakers iii. Products c. Discussion: Decisions and next steps 11:00 Coffee break ½ hour 11: Other Future Clay Club Work Chair a. Review of activities agreed at CC19; identification of additional topics of interest (15 min) 30 minutes Slides, oral presentation Summary Record of CC19: NEA/RWM/CLAYCLUB(2010)1 b. Decisions on future activities, including potential topical sessions at Clay Club annual meetings c. Clay Club Funding 12: Other Clay Club Business NEA Secretariat, Clay Club Chair 30 minutes a. Update and extension of the Clay Club Mandate Current Mandate: NEA/RWM/CLAYCLUB(2009)1 b. Dates and location of next meeting: 21 st Meeting of the Clay Club Proposed updated mandate: NEA/RWM/CLAYCLUB(2010)3 12: Summary of Meeting Outcomes and Conclusions 15 minutes 12:45 Adjourn Meeting 12:45 Lunch 14:00 TECHNICAL VISIT: Bruce Site 14:00 Travel to the Bruce Site; overnight near the Bruce Site Transportation will be provided from the NWMO main office (i.e., the location of the CC- 6

7 20 meeting). 17:30 Approximate arrival at Bruce Site; overnight near the Bruce Site Details on accommodations provided separately. 7

8 Thursday, 23 September :30 TECHNICAL VISIT: Bruce Site (continued) A technical tour of the Bruce nuclear site, the location for Ontario Power Generation s proposed Deep Geologic Repository for low and intermediate level radioactive waste in Canada, will be provided on Day 3. Geologically, the Bruce nuclear site is situated on the Eastern flank of the intra-cratonic Paleozoic age Michigan Basin. The sedimentary sequence beneath the site is approximately 860 m thick, comprised of near horizontally layered (0.6 o ) dolostone, limestone, shale, evaporites and minor sandstone formations (34), Cambrian to Devonian in age. As envisioned the repository would be constructed at a nominal depth of 680 m in the argillaceous limestone Cobourg Formation beneath a 200 m thick confining layer of shale (Queenston, Georgian Bay, Blue Mountain Formations). The DGR is project is currently part of an on-going Environmental Assessment (EA) initiated in As part of the EA, a multi-phase geoscientific investigation to confirm the suitability of the Paleozoic sedimentary sequence beneath the Bruce nuclear site for implementation of the DGR concept was initiated in 2006 and is now nearing completion. The technical tour will provide background and interim results from the Geoscientific investigation, DGR engineering design, Safety Assessment and Public Relations. Further information and scientific publications on the proposed DGR can be downloaded from nwmo.ca/dgr. This includes the technical papers described below, which provide useful background information. 1. Ontario Power Generation s Proposed L&ILW Deep Geologic Repository: An Overview of Geoscientific Studies 2. Diffusive anisotropy in low-permeability Ordovician sedimentary rocks from the Michigan basin in southwest Ontario 3. Regional and site geological frameworks proposed Deep Geologic Repository, Bruce County, Ontario 4. Hydraulic testing to characterize low permeability sedimentary formations - proposed Deep Geologic Repository, Tiverton, Ontario 5. Hydrogeologic Modelling in Support of a Proposed Deep Geologic Repository in Canada for Low and Intermediate Level Radioactive Waste Approximate schedule is shown below. 08:30 T.1 Arrival and Security Check-In 45 minutes 08:30 Security check-in will take place at the Bruce Site Public Information Centre. Transportation from the hotel will be provided by NWMO. Photo Identification Is Required. 8

9 09:15 T.2 Presentations on the Bruce Site I hour 45 minutes Bruce Site (B21) Main conference room 09:15 a. Orientation to Bruce nuclear site and DGR Program (10 mins) b. DGR Geoscience Program Overview (30 mins) Bruce nuclear site Characterisation Activities Preparation of DGR Geosynthesis Future Activities 2011 c. DGR Engineering Design (30 mins) Repository Design/Excavation 10:25 Coffee break 15 min 10:40 d. Safety Assessment (30 mins) Scenario Assessment/Approach Interim Results a. Public Relations (20 mins) Community Experience/Activities :30 T.3 Facility Tour of the DGR Storage Facility 60 minutes 12:00 Lunch (DGR Core Storage Facility) 13:00 Return to Toronto Transportation will be provided from the Bruce site to two locations: Pearson Airport (no later than 5 pm) Delta Chelsea Hotel in downtown Toronto (estimated 6:30 pm) (map) 9