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The busyness of the nuclear fuel supply chain
Ken Petersenpresident@ans.org
With all that is happening in the industry these days, the nuclear fuel supply chain is still a hot topic. The Russian assault in Ukraine continues to upend the “where” and “how” of attaining nuclear fuel—and it has also motivated U.S. legislators to act.
Two years into the Russian war with Ukraine, things are different. The Inflation Reduction Act was passed in 2022, authorizing $700 million in funding to support production of high-assay low-enriched uranium in the United States. Meanwhile, the Department of Energy this January issued a $500 million request for proposals to stimulate new HALEU production. The Emergency National Security Supplemental Appropriations Act of 2024 includes $2.7 billion in funding for new uranium enrichment production. This funding was diverted from the Civil Nuclear Credits program and will only be released if there is a ban on importing Russian uranium into the United States—which could happen by the time this column is published, as legislation that bans Russian uranium has passed the House as of this writing and is headed for the Senate. Also being considered is legislation that would sanction Russian uranium. Alternatively, the Biden-Harris administration may choose to ban Russian uranium without legislation in order to obtain access to the $2.7 billion in funding.
Eric P. Robertson, Michael G. McKellar, Lee O. Nelson
Fusion Science and Technology | Volume 61 | Number 1 | January 2012 | Pages 452-457
Other Concepts and Assessments | Proceedings of the Fifteenth International Conference on Emerging Nuclear Energy Systems | doi.org/10.13182/FST12-A13462
Articles are hosted by Taylor and Francis Online.
This paper evaluates the integration of a high-temperature gas-cooled reactor (HTGR) to an in situ oil shale retort operation producing 7950 m3/D (50,000 bbl/day). The large amount of heat required to pyrolyze the oil shale and produce oil would typically be provided by combustion of fossil fuels, but can also be delivered by an HTGR. Two cases were considered: a base case which includes no nuclear integration, and an HTGR-integrated case.The HTGR was assumed to be physically located near the oil shale operation such that heat losses during surface transport of the heating fluid were negligible. Transferring the required retort heat for all three cases to the underground oil shale was modeled by a series of closed-loop pipes. The pipes ran from the surface to the desired subsurface zone where the majority of the heat was transferred to the oil shale; the cooled fluid was then returned to the heat source at the surface for reheating. The heat source was a natural gas fired boiler for the base case and was an HTGR for the HTGR-integrated case. The fluid and heat flows through the circulation systems were modeled using Hyprotech's HYSYS.PlantTM process modeling software.A mass and energy balance model was developed to evaluate oil production, gas production and usage, electricity generation and usage, heat requirements, and CO2 emissions for each case. Integrating an HTGR to an in situ oil shale retort operation appeared quite feasible and had some notable advantages over the base case. The HTGR-integrated case produced the same amount of refinery-ready oil, four times the amount of gas, 8% of the amount of CO2, and 70% of amount of electricity as the base case evaluated with retort heat coming from combustion of fossil fuels.