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Development And Application Of A Thermochemical Database (MSTDB-TC) To Modeling Corrosion In Molten Salt Reactors

Accurate representations of the thermochemistry and phase equilibria of relevant molten salt constituents and their aggregate behavior are critical to the development, design, operation, and licensing of any molten salt reactor (MSR). This need is currently being addressed by the creation of a dedicated, high quality/validated MSR thermochemical database, the Molten Salt Thermal Properties Database-Thermochemical (MSTDB-TC). MSTDB-TC is being populated with prioritized models and values for vapor species, and liquid and crystalline phases of chloride and fluoride fuel and coolant salts with relevant fission product and transuranic elements, and more recently with corrosion-relevant systems with chromium, iron, and nickel. Multi-cation crystalline and melt solution models are being incorporated, including newly developed relations as necessary, to obtain real system behavior.

Product Number: ED22-17137-SG
Author: Theodore M. Besmann, Jacob A. Yingling, Johnathan C. Ard, Matthew S. Christian, Amir M. Mofrad, Juliano Schorne Pinto, Mahmoud A. A. Aslani
Publication Date: 2022
$20.00
$20.00
$20.00

The development of molten salt cooled and/or fueled nuclear reactors is well underway both in the United States and abroad. As molten salts can be highly corrosive, understanding and controlling in-reactor corrosion remains a major issue. As a result, a thermochemical database is being developed to aid, among other things, in addressing corrosion in molten salt reactors, the Molten Salt Thermal Properties Database-Thermochemical (MSTDB-TC), by supporting modeling and simulation. This paper will describe the process of creating the database, its structure and content, and examples of applications in assessing corrosion in molten salt reactor construction alloys.

The development of molten salt cooled and/or fueled nuclear reactors is well underway both in the United States and abroad. As molten salts can be highly corrosive, understanding and controlling in-reactor corrosion remains a major issue. As a result, a thermochemical database is being developed to aid, among other things, in addressing corrosion in molten salt reactors, the Molten Salt Thermal Properties Database-Thermochemical (MSTDB-TC), by supporting modeling and simulation. This paper will describe the process of creating the database, its structure and content, and examples of applications in assessing corrosion in molten salt reactor construction alloys.