Fuel

Centrus Energy’s HALEU demonstration cascade. (Photo: Centrus Energy)

Centrus Energy announced on September 6 that it is conducting final system tests and expects to begin producing high-assay low-enriched uranium (HALEU) in October from its 16-machine gaseous centrifuge enrichment demonstration cascade at the American Centrifuge Plant in Piketon, Ohio. After achieving initial HALEU production, Centrus has specific goals to meet under contract as the company ramps the demonstration cascade to its target annual production rate of 900 kg per year.

Centrus is required under a cost-share contract with the Department of Energy to produce 20 kg of 19.75 percent–enriched HALEU in uranium hexafluoride (UF₆) form by the end of this year. That contract, announced in November 2022, replaced an earlier contract signed in October 2019 that called for first production of HALEU by June 2022. The current contract calls for production at an annual rate of 900 kg of HALEU UF₆ per year in 2024, with additional options—subject to appropriations—to produce material in future years.

Ken Petersen
president@ans.org

The front end of the fuel cycle is getting a lot of attention lately—and it needs it. The war in Ukraine has disrupted the global supply chain for many products, nuclear fuel being one. Several countries have determined that they no longer want to rely on nuclear fuel from Russia. This can be anything from fabricated fuel including uranium, conversion, and enrichment to just enrichment.

Since the Cold War, Russia has been a major supplier of nuclear fuel to the West. Replacing Russia as the main supplier will take both time and money—a fact that has become even more clear as the small modular reactor community grows, and with it, the demand for high-assay low-enriched uranium (HALEU) for fuel.

The American Nuclear Society has been highlighting the immediacy of the fuel supply problem—which will become a crisis without immediate action—for years. In 2021, ANS wrote to Congress, urging swift action. This year, Nuclear News and ANS’s Nuclear Newswire have run a three-part series by energy writer and consultant Matt Wald on the domestic nuclear fuel shortage. The first article, “On the verge of a crisis: The U.S. nuclear fuel Gordian knot,” was published on Newswire on April 14; the second, “The U.S. nuclear fuel Gordian knot: From global supplier to vulnerable customer,” on May 19. The final piece of the series, “The U.S. nuclear fuel Gordian knot: The uncertain path forward,” was posted on September 1.

The Nuclear Regulatory Commission staff will hold a hybrid public meeting on September 7 to discuss the agency’s licensing and oversight of Centrus/American Centrifuge Operating’s American Centrifuge Plant, in Piketon, Ohio. The discussion will focus primarily on the company’s enrichment of high-assay low-enriched uranium, or HALEU.

In the last few weeks of 2021, when it was clear that the Russian invasion of Ukraine had put this country’s uranium fuel supply in jeopardy, nuclear energy advocates lobbied hard to attach provisions to various pieces of “must-pass” legislation—such as the National Defense Appropriations Act (NDAA), the Ukraine Supplemental Appropriations Act, the Infrastructure Investment and Jobs Act, and the CHIPS and Science Act—to have the government get the ball rolling on new domestic uranium fuel production capacity. Four times they thought they had succeeded, that Congress was going to allocate enough money to start the United States on the road to a secure supply of reactor fuel, including the higher-enriched fuel needed for advanced reactors.

Dominion Engineering, Inc. (DEI) has developed a number of innovative and cost effective tools and services designed to improve fuel reliability.

In the latest example of Europe’s move away from its dependence on Russia for VVER reactor fuel, Westinghouse Electric Company on Friday signed a long-term agreement with Slovakia’s nuclear power plant operator, Slovenské Elektrárne, to license and supply VVER-440 fuel assemblies.

U.K. energy security secretary Grant Shapps (center), Ukraine minister of energy German Galushchenko (right), and Ukraine deputy minister of energy Yaroslav Demchenkov (left) with captured Russian military vehicles in Kyiv on August 22. (Photo: BEIS Communications)

The U.K. government has announced its intention to provide a loan guarantee of £192 million (about $244 million) to enable Britain-based Urenco to supply Ukraine’s nuclear operator Energoatom with uranium enrichment services. (Urenco has been a supplier to Energoatom since 2009.) The loan is to be made through UK Export Finance, the nation’s export credit agency.

According to the August 23 announcement, the added support will “strengthen Ukraine’s energy security and further isolate Putin by helping the country maintain its independence from Russian nuclear fuel.” Once provided, the additional funds will boost the United Kingdom’s total nonmilitary assistance to Ukraine to nearly £5 billion (about $6.4 billion), the government stated.

The announcement came as Grant Shapps, U.K. secretary of state for energy security and net zero, visited Kyiv to meet with senior government ministers and leading energy figures—including Energoatom president Petro Kotin and Ukraine’s deputy prime minister Oleksandr Kubrakov and energy minister German Galushchenko—to discuss British support for Ukraine’s eventual recovery.

Through its now one-year-old Nuclear Fuel Fund, the U.K. government has awarded Westinghouse three grants to upgrade and expand the Springfields Fuel Fabrication Facility to support Britain’s next-generation nuclear reactors, the American-based company announced yesterday.

Framatome’s Protect EATF assembly. (Photo: Framatome)

The nuclear industry’s first 100 percent accident tolerant fuel assembly has successfully completed its initial cycle of operation at a U.S. nuclear power plant, Framatome announced earlier this week.

Following 24 months of operation at Constellation Energy’s two-unit Calvert Cliffs nuclear power plant in Lusby, Md., testing and inspections confirm that Framatome’s lead Enhanced Accident Tolerant Fuel (EATF) assembly safely withstood in-reactor conditions and performed as designed, according to the French-based company.

"The accelerated delivery and proven performance of our technology reflects the dedication and expertise of our people with the collaborative support from the industry,” said Lionel Gaiffe, senior executive vice president of Framatome’s fuel business unit. “Collectively, we are one step closer in the qualification of our Protect EATF technology for the nuclear industry. With the adoption and implementation of our enhanced technologies, our industry partners continue to demonstrate their commitment to enhance the safety and performance of their reliable, low-carbon, energy operations.”

TerraPower and Centrus Energy Corp. announced on July 17 that they have signed a memorandum of understanding to “significantly expand their collaboration aimed at establishing commercial-scale, domestic production capabilities for high-assay, low-enriched uranium (HALEU)” to supply fuel for TerraPower’s first Natrium reactor. Nearly three years ago, TerraPower first announced plans to work with Centrus to establish commercial-scale HALEU production facilities. The two companies signed a contract in 2021 for services to help expedite the commercialization of enrichment technology at Centrus’s Piketon, Ohio, facility.

The current bull market for uranium seems to be heating up. “Fundamentals are strong, and new political incentives are in place to spur nuclear development,” according to an article on the Proactive Investors website, which also noted that the uranium supply “will need to increase significantly to meet the market’s needs if nuclear is to become a key source of energy in the global push to reduce carbon emissions.”

The European Union has selected a Westinghouse-led consortium to develop and deliver “a secure, fully European nuclear fuel supply” for Russian-designed VVER reactors in the EU and Ukraine, the U.S.-based firm announced last week.

Urenco announced July 6 that it will expand enrichment capacity at its U.S. site in Eunice, N.M.—known as UUSA—by adding new centrifuge cascades to increase capacity by about 700 metric tons of separative work units per year, or a 15 percent increase, with the first new cascades coming on line in 2025.

Westinghouse Electric Company has signed a contract extension with EDF Energy to supply fuel for the United Kingdom’s advanced gas-cooled reactor (AGR) fleet, the American firm announced yesterday.

Ultra Safe Nuclear (USNC) announced on June 21 that it has selected the city of Gadsden, Ala., to host a $232 million MMR assembly plant. Modules for the company’s high-temperature, gas-cooled and TRISO-fueled microreactor, dubbed the Micro-Modular Reactor (MMR), would be manufactured, assembled, and tested at the “highly automated facility” once it is in operation.

Centrus Energy announced yesterday that it has received Nuclear Regulatory Commission approval to introduce uranium hexafluoride into its 16-machine centrifuge cascade in Piketon, Ohio, following operational readiness reviews by the NRC. Centrus says it “remains on track to begin production of high-assay low-enriched uranium (HALEU) by the end of 2023.” The announcement follows a series of inspections at the American Centrifuge site in April 2023.

The Department of Energy released two draft requests for proposals to acquire high-assay low-enriched uranium (HALEU)—one covering enrichment services that could include the production of between 5 and 145 metric tons of HALEU during a 10-year performance period, and another for deconverting that HALEU from uranium hexafluoride (UF₆) gas to metal or oxide forms in preparation for fuel fabrication. The DOE also issued a notice of intent to fulfill its National Environmental Policy Act (NEPA) obligations for the HALEU Availability Program by launching the scoping process for an environmental impact statement; that notice was published in the Federal Register on June 5.

McMorris Rodgers

The House Energy and Commerce Committee has advanced a bill to the chamber’s floor that, with certain exceptions, would ban the import of low-enriched uranium from Russia into the United States. Introduced in February by the E&C Committee’s chair, Cathy McMorris Rodgers (R., Wash.), the Prohibiting Russian Uranium Imports Act (H.R. 1042) was approved in a (slightly) bipartisan 29–21 vote on May 24.

The legislation would start banning Russian uranium 90 days after its enactment but would also allow the Department of Energy to issue waivers should the DOE determine (1) that there is no alternate source of low-enriched uranium available to keep a U.S. nuclear reactor in operation or (2) that importing Russian uranium is in the national interest.

Framatome is prepared to manufacture a novel molybdenum-uranium (U-Mo) fuel to extend the life and safe operation of the Forschungsreaktor München II (FRM II) research reactor in Germany. A new fuel supply—one that uses uranium enriched to less than 20 percent U-235—means the FRM II can continue to supply neutrons to industry and the scientific community. The fuel is “Europe’s low-enriched fuel with the highest density ever realized for research reactor operations,” according to Framatome’s April 27 announcement.

Canada’s Cameco and U.K.-based Urenco last week jointly announced the signing of agreements to become part of a Westinghouse-led fuel supply chain for Bulgaria’s Kozloduy nuclear power plant. (Also included in the partnership is Uranium Asset Management.)