Waste Technology Section

Underground Research Facilities Network (URF)


Regional Training Course on Fundamentals of Geological Disposal

14—22 June 2011, Prague, Czech Republic


day 1

Module I: the basic concept of geological disposal
The concept of geological disposal

Waste types, origins, inventories properties

Geological environments for waste disposal

Presentations by participants: status of their national programmes and key issues that are currently of importance


day 2

Module II: repository design and construction
Repository design and safety concepts

Engineering, constructing and operating a repository


Module III: site selection
Group discussion: structuring a national radioactive waste management programme

Presentations:

  • Decision points and staging of programmes
  • Historical lessons from waste management programmes
  • Case History: example from an ongoing national programme
Group discussion

Tectonics and repository siting


day 3

Module IV : site characterization
Site characterization in crystalline environments

Site characterization in sedimentary environments


Module V: retardation of radionuclides in the repository multi-barrier system
Degradation of engineered barriers and the mobilization, migration and retardation of radionuclides in the deep geological environment


day 4

Module VI: stakeholder dialogue
Group exercise: stakeholder dialogue

Stakeholder dialogue: the theory

Case studies from around the world

Breakout groups: Programme design of stakeholder dialogue at a hypothetical repository site

Presentation of results by each group and discussion by peers


day 5

Module VII: MAA (Multi Attribute Analysis) as an aid to sitting decisions
Objective and options to be compared

Factor to be consider

Data sets

Scoring and weighting factors

Demonstration (interactive practice)

Evaluation

Analysis of exercise


day 6

Module VIII a: practical aspects of waste disposal in the JOSEF Underground Educational Facility (UEF)
Downhole equipment installation (site characterization stage)

Core drilling and core evaluation (site characterization stage)

Tunnel convergence measurements (repository construction and operational phases)

In-tunnel equipment installation (repository operational and monitoring phases)


day 7

Module VIII b: practical aspects of waste disposal in JOSEF UEF
Data recording (repository operational and monitoring phases)

Buffer and backfill technology, including buffer installation (operational phase)

Gas permeability tests (repository operational and monitoring phases)


day 8

Module IX: performance and safety assessment
Basics of performance and safety assessment
  • Common basis of radiological safety standards and different regulations worldwide
  • What is a safety case?
  • Setting PA/SA objectives: deciding what to evaluate and when
Objectives and different methods of safety assessments
  • Probabilistic and deterministic methods
  • Scenario definition and use
  • Calculational methods and tools
Examples of safety assessment structures and results in different national programmes

Showing it is safe: other ways of presenting the evidence
  • Geochemical indicators
  • Natural analogues
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