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Conference Spotlight
Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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ANS joins others in seeking to discuss SNF/HLW impasse
The American Nuclear Society joined seven other organizations to send a letter to Energy Secretary Christopher Wright on July 8, asking to meet with him to discuss “the restoration of a highly functioning program to meet DOE’s legal responsibility to manage and dispose of the nation’s commercial and legacy defense spent nuclear fuel (SNF) and high-level radioactive waste (HLW).”
Gregory A. Johnson
Nuclear Technology | Volume 170 | Number 3 | June 2010 | Pages 416-421
Technical Paper | Fuel Cycle and Management | doi.org/10.13182/NT10-A10327
Articles are hosted by Taylor and Francis Online.
Transuranic (TRU) conversion ratio is a key cost driver of the advanced fuel cycle. The reactor capacity required to consume the national TRU inventory increases as conversion ratio increases. Achieving zero conversion ratio with metal alloy or oxide fuels is fraught with technical challenges. These difficulties can be overcome by hydriding the metal alloy fuel. In this paper, we present the novel concept of using a uranium-free hydrided metal alloy fuel to achieve zero conversion ratio. A reactor core composed of this novel fuel and that would fit in the Sodium Advanced Fast Reactor core geometry was developed; core performance and TRU consumption is estimated and presented. Concerns about the safety of uranium-free fuels are addressed. Although the Doppler effect is nonexistent in a uranium-free fast core, a substantial Doppler effect is present with the uranium-free hydrided metal alloy fuel.