This Amended Determination follows the approval of additional funding, extended period of performance, a new teaming partner, and new project milestones to support the project team's small-scale, research and development activities of an alloy that can meet critical property requirements, such as operation at very high temperatures (750°C or higher), for use in liquid-fueled molten salt reactors and fluoride-salt cooled high temperature reactors.
Office of NEPA Policy and Compliance
April 29, 2026
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This Amended Determination follows the approval of additional funding, extended period of performance, a new teaming partner, and new project milestones to support the project team's small-scale, research and development activities of an alloy that can meet critical property requirements, such as operation at very high temperatures (750°C or higher), for use in liquid-fueled molten salt reactors and fluoride-salt cooled high temperature reactors. Specifically, the project team will (1) fabricate, test, and develop prototype reactor components to meet performance metrics, (2) test and validate the alloy performance within the prototype components to achieve optimal operational results, and (3) further refine reactor components for next phase of product development. If successful, this project will result in production of an alloy that will decrease risks and significantly accelerate the timeline for commercialization of the structural alloy for use in new, high efficiency reactors, ultimately reducing dependence on foreign energy sources, thereby increasing U.S. energy security.