Fuel

Fast reactor technology, which can run on used nuclear fuel to generate energy, could fulfill U.S. energy needs for 100 years using existing waste, according to Jess Gehin, associate lab director at Idaho National Laboratory and an ANS member in a recent interview with CNBC. Gehin and other nuclear experts believe that this technology could provide substantial energy for the country, help resolve the debate over storing spent nuclear waste, and address the issue of climate change with more carbon-free energy generation. However, the commercial development of fast reactor technology has been hampered by political and economic roadblocks, which researchers are now seeking to overcome.

The board of Boss Energy Limited has made a “final investment decision” to develop the Honeymoon in situ uranium project in Australia, the Perth-based company announced last week. Boss said it will now accelerate engineering, procurement, and construction to ensure that Honeymoon—located in South Australia, near the border with New South Wales—remains on track for first production by December 2023, ramping up to a steady-state rate of 2.45 million pounds of U₃O₈ per year.

The war in Ukraine notwithstanding, Westinghouse Electric Company has stepped up its partnership with Energoatom, Ukraine’s state-owned nuclear utility, signing agreements last week to supply all of the nuclear fuel for the country’s operating reactor fleet and to collaborate on the construction of nine AP1000 units for Ukraine, rather than the five earlier envisioned.

The Department of Energy is putting together a national uranium supply strategy, energy secretary Jennifer Granholm told lawmakers last week at a Senate Energy and Natural Resources Committee hearing.

Granholm was appearing before the committee to discuss the Biden administration’s fiscal year 2023 budget proposal for the DOE.

TRISO-X submitted a license application for a high-assay low-enriched uranium (HALEU) fuel fabrication facility to the Nuclear Regulatory Commission on April 6, the day after parent company X-energy announced that TRISO-X had secured a 110-acre site in Oak Ridge, Tenn., for the construction of the facility, which it is aiming to have operating in 2025.

On April 7, U.S. Sen. John Barrasso (R., Wyo.), ranking member of the Senate Committee on Energy and Natural Resources, introduced the Fueling Our Nuclear Future Act of 2022. The bill would ensure a domestic supply of high-assay low-enriched uranium (HALEU) for advanced nuclear reactors by directing the Department of Energy to prioritize establishing a domestic HALEU enrichment capability and to use enriched uranium held by the DOE and the National Nuclear Security Administration to fuel advanced reactor demonstrations until U.S. commercial enrichment is available. The bill explicitly excludes uranium sourced or processed by any entity owned or controlled by the governments of Russia and China.

X-energy has announced that its wholly owned subsidiary, TRISO-X, plans to build the TRISO-X Fuel Fabrication Facility, dubbed TF3, at the Horizon Center Industrial Park in Oak Ridge, Tenn. X-energy has produced kilogram quantities of fuel at its pilot plant at Oak Ridge National Laboratory through a public-private partnership.

The commercial plant will use high-assay low-enriched uranium (HALEU) to produce TRISO particles, which are fabricated into fuel forms, including the spherical graphite “pebbles” needed to fuel the company’s Xe-100 high-temperature gas reactor. Site preparation and construction are expected to get underway in 2022, and commissioning and start-up are scheduled for as early as 2025, according to X-energy.

Barrasso

In the latest effort by the federal government to sanction Russia over its invasion of Ukraine, Sen. John Barrasso (R., Wyo.) last week introduced legislation to prohibit the importation of Russian uranium to the United States.

The Biden administration banned imports of Russian oil, liquefied natural gas, and coal, via executive order on March 8.

Barrasso’s bill, S. 3856, was introduced on March 16, with three of his fellow GOP lawmakers as cosponsors: Sens. Kevin Cramer (R., N.D.), Cynthia Lummis (R., Wyo.), and Roger Marshall (R., Kan.).

“The time is now to permanently remove all Russian energy from the American marketplace,” said Barrasso, ranking member of the Senate Energy and Natural Resources (ENR) Committee. “We know Vladimir Putin uses this money to help fund his brutal and unprovoked war in Ukraine. While banning imports of Russian oil, gas, and coal is an important step, it cannot be the last. Banning Russian uranium imports will further defund Russia’s war machine, help revive American uranium production, and increase our national security.”

The United States must ramp up the domestic production of high-assay low-enriched uranium (HALEU), the panelists agreed during a March 11 members-only webinar held amid heightened concerns about energy security following Russia’s invasion of Ukraine, and the day after Congress approved $45 million for the HALEU Availability Program for fiscal year 2022.

John Starkey, ANS director of public policy, moderated the webinar, which featured panelists Scott Kopple, senior director of government relations at BWX Technologies; Everett Redmond, senior technical advisor at the Nuclear Energy Institute; Benjamin Reinke, senior director of corporate strategy and advisor to the CEO at X-energy; Patrick White, project manager at the Nuclear Innovation Alliance (NIA); and Brad Williams, a member of the Senate Energy and Natural Resources Committee staff.

A recording of the webinar is available to ANS members.

ANS is hosting an expert panel for the members-only virtual event, “High-Assay Low-Enriched Uranium: Fueling Nuclear Energy’s Future,” on Friday, March 11, from 10 to 11 a.m. (EST).

Register now for the event. Can't attend live? Register to receive a link to the recording.

Ultra Safe Nuclear Corporation (USNC), an advanced reactor and reactor fuel developer, announced last week that it plans to begin operations this summer at its Pilot Fuel Manufacturing (PFM) facility in Oak Ridge, Tenn., pending the receipt of the requisite state and local permits. The facility is located in the East Tennessee Technology Park, site of the Manhattan Project’s K-25 gaseous diffusion plant. USNC purchased an 8.7-acre site—which included a preexisting industrial building—from Heritage Center LLC in 2021.

Framatome announced on February 22 that the Nuclear Regulatory Commission has approved a license amendment that would allow Framatome’s shipping containers to transport, in the United States, fresh nuclear fuel assemblies containing uranium enriched up to 8 percent uranium-235.

Light water reactor fuel with higher enrichments and burnup capabilities than currently used under low-enriched uranium regulation could improve electricity generation and fuel utilization, possibly improving plant economics and providing more flexible reactor performance through extended operating cycles and more efficient core configurations.

The American Nuclear Society is urging the Department of Energy to accelerate the development of an availability program for high-assay low-enriched uranium (HALEU).

In a letter sent to the DOE earlier this week, ANS President Steven Nesbit and Executive Director and Chief Executive Officer Craig Piercy state that HALEU availability is critical to the continued development of advanced nuclear technologies.

Citing “improving market sentiment,” Tim Gitzel, president and chief executive officer of the Canadian uranium mining company Cameco, announced on February 9 the planned restart of operations at the McArthur River mine in Saskatchewan.

Regalbuto

High-assay low-enriched uranium (HALEU) is the power-dense feedstock of choice for a slew of advanced reactor designs. There’s just one problem: It isn’t available . . . yet. Downblending high-­enriched uranium owned by the Department of Energy to between 5 and 19.75 percent fissile U-235 is a stopgap measure at best, and no U.S. facility can yet produce commercial quantities of uranium above the 5 percent U-235 limit for low-enriched uranium.

The problem is one not of technology, but of economics: Enrichment companies want to see clear market signals that advanced reactors will be deployed in quantity, leading to long-term purchase agreements that will justify investments made today.

ANS Fellow Monica Regalbuto is director of Nuclear Fuel Cycle Strategy at Idaho National Laboratory, tasked with leveraging her more than 30 years of fuel cycle experience to ensure an adequate domestic supply of HALEU. She was invited to speak about her work during the opening plenary session of the 2021 ANS Winter Meeting.

Christina J. Leggett

I am so excited to be working in the nuclear industry right now! The U.S. nuclear industry includes dozens of advanced reactor companies that offer a variety of reactor designs, such as molten salt; sodium-cooled; and high-temperature, gas-cooled reactors. These reactors range in size from a few MWe for remote or mobile applications, to a few hundred MWe that could enable modular scale-up, to nearly 1 GWe, which is similar to existing light water reactors. These novel designs boast additional applications beyond traditional electricity generation, such as desalination to produce clean drinking water, district heating, hydrogen production, and process heat for industrial and chemical processes, opening up new possibilities to decarbonize industrial sectors and provide valuable resources to diverse stakeholders. The smaller footprint of microreactors and small modular reactors could also open new locations to reactor siting, further expanding advanced reactors’ market potential. Because of these possibilities, interest in advanced reactors comes from a variety of potential customers, including local communities, NASA, and the Department of Defense.

Positioning nuclear power to combat climate change requires the rollout of advanced reactors to replace carbon-­emitting power generation. That necessity, and its urgency, is reflected in recent budget proposals for the Department of Energy’s Office of Nuclear Energy. Part of that proposed funding focuses on deploying new fuel technologies.

Metallic fuels, which are alloys of fissionable material, offer several advantages, including more fuel-­efficient reactors with a double or greater fuel burnup than the oxide fuels found in light water reactors. Fuel fabrication is also more cost-­effective with metallic fuels than with oxide fuels. Furthermore, much of the research and development effort needed to qualify these metallic fuels has been done.

Westinghouse Electric Company and Southern Nuclear have agreed to a plan to install four Westinghouse lead test assemblies in Vogtle-2, a 1,169-MWe pressurized water reactor located in Waynesboro, Ga. Four lead test assemblies containing uranium enriched up to 6 percent U-235 will be loaded in Vogtle-2 in 2023, marking the first time that fuel rods with uranium enriched above 5 percent U-235 are put in use in a U.S. commercial power reactor.

BWX Technologies announced on January 24 that it has been awarded a $4.9 million contract amendment to produce TRISO fuel particles using natural uranium and to demonstrate performance under a defined production schedule. BWXT’s Nuclear Operations Group will perform the work at BWXT’s Lynchburg, Va., facility, where TRISO production was restarted in November 2020. The contract amendment was awarded by Battelle Energy Alliance, which manages Idaho National Laboratory on behalf of the Department of Energy.