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The Use of Thermodynamic Databases in Performance Assessment: Workshop Proceedings, Barcelona, Spain 29-30 May 2001

The Use of Thermodynamic Databases in Performance Assessment: Workshop Proceedings, Barcelona, Spain 29-30 May 2001

Organisation for Economic Co-operation and Development; NEA

Performance assessment of repository concepts for the geological disposal of long-lived radioactive waste relies on the availability of thermodynamic data for many radionuclides and other elements under a wide range of physico-chemical conditions. For the past ten years, the OECD Nuclear Energy Agency (NEA) has been co-ordinating a multinational effort to produce a database of selected thermochemical values that would satisfy the requirements of the various national programmes in Member countries. This project is known as the NEA Thermochemical Database (TDB) Project. This publication contains the full papers and summary discussion records of a workshop attended by scientists active in the field of chemical thermodynamics and experts in repository performance assessment who use the thermochemical databases for their evaluations. During the workshop, participants discussed current experimental and theoretical standpoints, new data requirements and the peculiarities of their application in performance assessment

eBook, Electronic resource, Book. English.
Published Paris: OECD Publishing, 2002

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Statement of responsibility: Organisation for Economic Co-operation and Development and NEA
ISBN: 9264160795, 9789264160798
Physical Description: 1 online resource
Other Number: 10.1787/9789264160798-en
Subject: Nuclear Energy; Spain


  1. Foreword
  2. Executive Summary
  3. Opening Session
  4. Welcome Speech by A. Mari
  5. Welcome Address on Behalf of the OECD/NEA by C. Nordberg
  6. Welcome Address on Behalf of the Management Board of the TDB Project by M. Askarieh
  7. Welcome Address on Behalf of ENRESA
  8. Session 1. The Project
  9. Overview of Work at the OECD/NEA Data Bank for the TDB Project by F. Mompean
  10. The TDB Story by H. Wanner
  11. Phase II of the NEA TDB Project and Some Lessons Learned from the Use of Phase I Data by K. Spahiu
  12. Session 2. Building the Bridges: Data to Performance Assessment
  13. Ionic Strength - Theory, Use, Cautions, Sources of Error
  14. Application of Pitzer's Ion-Interaction Approach for the Calculation of Excess Properties of Trade Radionuclides in Electrolyte Solutions by T. Fanghanel
  15. The Use of SIT in the NEA TDB Project - Advantages, Drawbacks, and Comparison with the Approaches Used in Some Geochemical Codes by K. Spahiu
  16. Discussion
  17. Data Estimation
  18. Thermodynamics, Data Estimation, and Performance Assessment by I. Grenthe
  19. Can We Estimate Which Organic Complexes are Important in PA? by W. Hummel
  20. An Empirical Method for Calculating Thermodynamic Parameters for U (VI) Phases, Aplications to Performance Assessment Calculations by R. C. Ewing, F. Chen, and S. B. Clark
  21. The Aqueous Chemistry and Thermodynamic of Actinides and Fission Products (ACTAF) Project by R. Klenze
  22. Discussion
  23. Session III. Performance Assessment
  24. Applications and Limitations of Using Thermodynamic Data in PA
  25. Limitations in the Use of NEA TDB Compilations by J. Bruno
  26. Mimimising Uncertainty Induced by Temperature Extrapolations of Thermodynamic Data: A Pragmatic View on the Integration of Thermodynamic Databases into Geochemical Computer Codes by D. A. Kulik
  27. Solubility Calculations and Their Interpretation in PA by U. Berner
  28. Difficulties Encountered in the Japanese Performance Assessment Programme Using Thermodynamic Data by M. Yui
  29. Discussion
  30. How Does Performance Assessment Use the Data?
  31. The Deterministic Approach by P. Sellin
  32. The Probabilistic Approach by C. Stockman
  33. Data Collection Form: The Link Between Migration Studies and Performance Assessment - Belgian Case by L. Wang, J. Marivoet, P. De Caniere, X. Sillen, H. Moors, M. Aertsens, M> PUt, A. Dierckx
  34. Discussion
  35. Panel Session - TDB Input in Performance Assessment
  36. Closing Remarks
  37. Annex 1. List of Participants
  38. Annex 2. Organising Committee