Thermochemical Database (TDB) Project

Phase IV

The fourth phase of the TDB project, started in February 2008 for a duration of four years, had later been extended to January 2014.

The goal, objectives and methodology remain unchanged: to provide access to a comprehensive, internally consistent, internationally recognised and quality-assured chemical thermodynamic database of selected chemical elements. This database should meet the specialised modelling requirements for safety assessments of radioactive waste disposal systems.

As a first priority of TDB IV, review work on iron, molybdenum and ancillary data was started in 2010, but the programme of work also included an exploratory stage for the preparation of two state-of-the-art reports, one on cement phases, which was completed in 2012, and one on the application of the Pitzer model to high ionic strength systems, currently in progress.

In parallel to the review work, a joint symposium was organised with the Sorption project. This symposium was an opportunity to present and discuss the main outcomes of the TDB and Sorption projects and also to gather views from the delegates on the future directions of these projects. The symposium was held 17–19 May 2010 at the Akademie Hotel, Karlsruhe, Germany and was attended by 75 delegates from 16 countries. The proceedings are available for download.

Phase IV review groups

Phase IV reviews:

  • Inorganic compounds of Fe. Part 2. (in preparation)
  • Inorganic compounds of molybdenum (in preparation)
  • Ancillary data

TDB IV sponsors

Funding for this new phase of the TDB project is provided by the OECD Nuclear Energy Agency and the following 16 organisations:

NWMO, Canada
RAWRA, Czech Republic
POSIVA, Finland
ANDRA, France
CEA, France
KIT, Germany
JAEA, Japan
KAERI, Republic of Korea
SKB, Sweden
HSK, Switzerland
NAGRA, Switzerland
PSI, Switzerland

Available data

All publicly available data from the project (the same as all material of any public interest) can be found in the TDB review reports and in the files with selected data. In order to access the files containing selected data, you must first register.

Related links

General information

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Last reviewed: 15 March 2016