IAEAInternational Atomic Energy Agency

Roger Seitz

Potential Working Groups

IAEA

Potential Working Groups from March

Topical areas for a future WG• WG1: Technical Conditions

– to address specifics on possible human actions based on site conditions (e.g. type of drilling, well diameter and depth, etc.)

• Technology available locally or more generally available (developing countries)• Role of geology/hydrology in defining scenarios• Description of details regarding intrusion (well diameter, location of well, etc.)• Conditions that could limit potential for intrusion

2

IAEA

Potential Working Groups from March

• WG2: Societal Aspects – to address societal context of future human action scenarios

• Level of development (current or future)

• Recognition something is wrong

• Distinction between inadvertent and advertent

• Effectiveness of barriers, markers and records (passive)

• International archive? Taking credit for records

3

IAEA

Potential Working Groups from March

• WG3: Linking Technical and Societal Conditions with Design – to consider the synthesis of site and societal considerations with the actual repository design to develop the full scenarios to be considered

• Timing – effectiveness of barriers as a function of time• Links between natural processes and intrusion (erosion of cover)• Countermeasures – what types of barriers are effective against drilling or

excavation (develop table of barriers and different types of intrusion• How does design impact contact with any specific waste package (spatial)

4

IAEA

General Topics – Practical implementation

• Consider how scenarios regarding future human actions are used in the process of siting, designing and developing WAC

• Regulatory and public perception considerations

• Interpretation of results above 1 mSv, do we always calculate impacts?

• Inclusion of probabilities/likelihoods

• Public perception of intrusion – over cautious, conservatisms

• Regulatory considerations – developing regulations

• Common methodology

• Natural evolution or intrusion (erosion followed by moving on site)

• Do we develop scenarios or consider impacts of intrusion without specifying scenarios

• How are results used to influence design, siting and WAC (applications throughout lifecycle)

5

IAEA

Additional Ideas

• Divide by geologic and near-surface disposal• Update draft IAEA document into Safety Report (integrating activity)

• Considerations:• Limit number of groups• Focus on areas where consensus can be reached• Practical expectations, achievable goals• Want to have product(s) that will contribute to a safety report at the

end of the project

6