|About this Abstract
||MS&T23: Materials Science & Technology
||Ceramics for New Generation Nuclear Energy System Application
||Evolution of the Chemical State in Molten Salt Reactors during Operation and Implications for Materials Behavior
||Theodore Besmann, Juliano Schorne-Pinto, Mina Aziziha, Clara M Dixon, Jorge Paz Soldan Palma, Ronald E Booth, Amir M Mofrad
|On-Site Speaker (Planned)
The circulating fueled salt in proposed molten salt reactors will experience an evolution in their elemental content during operation. Extended operation, i.e., high burnup, will thus lead to the buildup of fission products, contaminants, and corrosion products which can influence salt properties. In the current work a Molten Salt Thermal Properties Database – Thermochemical (MSTB-TC) has been developed, and continues to be expanded, to allow computing of the equilibrium state of MSR fueled salt that includes additional elements that result from operation. This presentation will discuss the state of the database with respect to modeling the behavior of complex MSR salts and examples of the impact of evolving chemical state on redox potential, fission product vapor pressures, corrosion product concentrations, and phase equilibria.