| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Materials and Chemistry for Molten Salt Systems
|
| Presentation Title |
Uncertainty Quantification and Propagation of Molten Salt Vapor Pressures Calculated from Thermodynamic Models |
| Author(s) |
Jorge F. Paz Soldan , Juliano Schorne-Pinto, Amir Mofrad, Jack Wilson, Clara Dixon, Mina Aziziha, Ronald Booth, Theodore Besmann |
| On-Site Speaker (Planned) |
Jorge F. Paz Soldan |
| Abstract Scope |
The vapor pressures over the salts as a function of composition and temperature are fundamental information for accident analysis codes which simulate radioactive release via gas species or aerosol particles from molten salt reactors (MSRs). As a result, an understanding of the uncertainty in the values of computed vapor pressures are needed to best assess risk. The CALculation of PHAse Diagrams (CALPHAD) method combined with the computing of uncertainty and its propagation (UQ and UP) is being developed as a valuable tool for obtaining upper and lower bounds for thermochemical properties of candidate salt mixtures. These, in turn, should allow computing of confidence ranges for vapor pressures required to meet regulatory needs. This presentation will demonstrate the methodology UQ and UP for computed vapor pressures and provide examples of calculations for salt compositions of interest. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Computational Materials Science & Engineering, Nuclear Materials, Modeling and Simulation |