The Use of Thermodynamic Databases in Performance Assessment
Subtitle: Workshop Proceedings, Barcelona, Spain 29-30 May 2001
By: Organisation for Economic Co-operation and Development and Nuclear Energy Agency
Contributors: Nuclear Energy Agency
Publisher: OECD Publishing
Published: 2002
Place of publication: Paris
Language: eng
Format: [electronic resource]:
Number of pages: 220
ISBN-13: 9789264160798
Subjects: Nuclear energy
Description: 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.
Table of contents: title: Foreword; title: Executive Summary; title: Opening Session; title: -Welcome Speech by A. Mari; title: Welcome Address on Behalf of the OECD/NEA by C. Nordberg; title: Welcome Address on Behalf of the Management Board of the TDB Project by M. Askarieh; title: Welcome Address on Behalf of ENRESA; title: Session 1. The Project; title: -Overview of Work at the OECD/NEA Data Bank for the TDB Project by F. Mompean; title: The TDB Story by H. Wanner; title: Phase II of the NEA TDB Project and Some Lessons Learned from the Use of Phase I Data by K. Spahiu; title: Session 2. Building the Bridges: Data to Performance Assessment; title: -Ionic Strength - Theory, Use, Cautions, Sources of Error; title: Application of Pitzer's Ion-Interaction Approach for the Calculation of Excess Properties of Trade Radionuclides in Electrolyte Solutions by T. Fanghanel; title: The Use of SIT in the NEA TDB Project - Advantages, Drawbacks, and Comparison with the Approaches Used in Some Geochemical Codes by K. Spahiu; title: Discussion; title: Data Estimation; title: Thermodynamics, Data Estimation, and Performance Assessment by I. Grenthe; title: Can We Estimate Which Organic Complexes are Important in PA? by W. Hummel; title: 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; title: The Aqueous Chemistry and Thermodynamic of Actinides and Fission Products (ACTAF) Project by R. Klenze; title: Discussion; title: Session III. Performance Assessment; title: -Applications and Limitations of Using Thermodynamic Data in PA; title: Limitations in the Use of NEA TDB Compilations by J. Bruno; title: 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; title: Solubility Calculations and Their Interpretation in PA by U. Berner; title: Difficulties Encountered in the Japanese Performance Assessment Programme Using Thermodynamic Data by M. Yui; title: Discussion; title: How Does Performance Assessment Use the Data?; title: The Deterministic Approach by P. Sellin; title: The Probabilistic Approach by C. Stockman; title: 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&gt; PUt, A. Dierckx; title: Discussion; title: Panel Session - TDB Input in Performance Assessment; title: Closing Remarks; title: Annex 1. List of Participants; title: Annex 2. Organising Committee