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Final Summary Report, European Nuclear Thermodynamic Database (ENTHALPY Project)

Project ID: FIKS-CT-1999-00001
Funded under: FP5-EAECTP C


ENTHALPY is a shared-cost action where 11 partners from 6 countries succeeded to produce one unique well validated thermodynamic database for in- & ex-vessel applications.
The first step was the critical assessment and merging of the two thermodynamic databases (THERMODATA/Grenoble and AEA-Technology/Harwell) in one database called "NTDiv" (for Nuclear Thermodynamic Database in-vessel). The second step was the extension of the database to Boron and Carbon, leading to the edition of the NTDiv0201 version (14 elements). In a third step, four ex-vessel elements and four new oxides components were added. All together, the final database is based on 20 elements :
O-U-Zr-Ag-In-Fe-Cr-Ni-Ba-La-Ru-Sr-B-C-Al-Ca-Mg-Si + Ar-H and includes in particular the 15 oxides system :
In view of the extension to Boron, AEKI determined experimentally 3 new phase diagrams namely ZrO(2)-FeO(x), ZrO(2)-B(2)O(3) and B(2)O(3) – UO(2).
About the open question of the solubility of zirconia in Zr-Fe, SKODA tests on T(liq) and T(sol) in the corner of low oxygen in the Zr-Fe-O system confirmed the large solubility.

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