Nuclear fuel fabrication

Why the concentration exists

Nuclear fuel fabrication transforms enriched uranium hexafluoride (UF6) into ceramic fuel pellets, rods, and assemblies qualified for specific reactor designs. At a fabrication facility, enriched UF6 in solid form is heated to gaseous form and chemically processed to produce uranium dioxide (UO2) powder, which is then compressed into small ceramic fuel pellets. These pellets are stacked and sealed into metal tubes approximately one centimeter in diameter to form fuel rods, which are then bundled into fuel assemblies containing 179 to 264 fuel rods depending on the reactor type.[4]

Fuel assemblies must be tailored to specific reactor designs, which creates barriers to substitution and concentrates supply among qualified fabricators. A typical reactor core holds 121 to 193 fuel assemblies, and operators typically replace about one-third of the core, or 40 to 90 fuel assemblies, every 12 to 24 months during refueling outages. The design-specific nature of fuel means that a fabricator qualified to supply one reactor type cannot necessarily supply another, limiting fungibility across the market.[4][8]

Qualification requirements and regulatory approval create long lead times for new fuel types and fabrication facilities. The NRC published its fuel qualification guidance for advanced reactors in March 2022, establishing the regulatory framework for novel fuel designs. For advanced reactors, many designs require new fuel types such as TRISO particles, metallic fuels, or HALEU-based assemblies, which lack the established fabrication infrastructure that exists for traditional light-water reactor fuel.[7][8]

What the evidence shows

Who supplies it

Westinghouse operates three world-class fuel fabrication facilities located in the United States, Sweden, and the United Kingdom. The Westinghouse Columbia Fuel Fabrication Facility (CFFF) in Hopkins, South Carolina, opened in 1969 and is the largest for-profit fuel production operation of its kind in the world. Westinghouse operates more than 2.5 million square feet of highly hazardous chemical and nuclear processing globally across its fuel fabrication operations.[3][10][11]

Domestic fuel fabrication services for traditional light-water reactor LEU fuel exist primarily from Westinghouse and Framatome for pressurized water reactor fuels, and GE Vernova for boiling water reactor fuels. Framatome brings over 65 years of experience in fuel fabrication through its CERCA division. There are currently three fuel fabrication plants operating in the United States serving the commercial fleet.[1][6][14]

For non-LWR fuels, several companies are investing in or already producing advanced fuel types. TRISO-X, BWXT, Standard Nuclear, and GE Vernova are investing or already producing TRISO or metallic fuel for near-term demonstration projects. Global Nuclear Fuel (GNF) has NRC approval to manufacture, ship, and analyze nuclear fuel with enrichments of up to 8 weight percent.[9][14]

What it depends on, and what depends on it

Fuel fabrication facilities occupy the final stage of the nuclear fuel supply chain, receiving enriched uranium from enrichment plants and converting it into reactor-ready fuel assemblies. The process begins with enriched UF6 delivered from enrichment facilities, which fabricators convert to UO2 powder and form into pellets. These pellets are then manufactured into fuel assemblies sized and configured for specific reactor designs.[4][8]

Where it sits in the stack

What would break it

Almost the entire North American nuclear fuel supply chain is described as woefully lacking, from uranium mining to fuel-pellet fabrication. This supply chain weakness becomes acute as Congress has banned imports of enriched uranium from Russia starting in 2028. Russia currently dominates the industry, creating a significant supply gap that domestic and allied suppliers must fill within a compressed timeframe.[2]

While LWR fuel fabrication capacity exceeds demand, the infrastructure for advanced reactor fuels remains commercially thin. Many SMRs and advanced reactors require new fuel types such as TRISO particles, metallic fuels, or HALEU-based assemblies that lack established fabrication lines. A more robust fabrication ecosystem will be needed to move advanced reactors from demonstration to commercial deployment.[8]

Material qualification cycles add years to the timeline for bringing new fuel fabrication capabilities online. Alloy 617 was added to the ASME code in 2019 after 12 years and $15 million of research, representing the first material added to the code in 30 years. Such extended qualification periods mean that new fabricators cannot rapidly enter the market even if capital and regulatory approval are secured.[15]

What to watch

TRISO-X received a 40-year Special Nuclear Material License from the NRC in February 2026, enabling commercial manufacture of fuel using high-assay low-enriched uranium (HALEU). TRISO-X anticipates operations starting the year following regulatory approval, with initial fuel production supporting X-energy's first commercial reactor, a proposed four-unit plant in partnership with Dow Chemical Company at their Seadrift, Texas facility.[5][16]

Framatome's Richland, Washington facility plans to commence manufacturing UO2 powder and TRISO particles in 2027. The facility received NRC approval of a license amendment enabling manufacture of fuel with uranium enrichment levels up to 10 percent, following site-wide approval to manufacture fuel enriched above 5 percent for the light-water reactor market.[12]

Standard Nuclear plans TRISO fuel production at two new facilities in 2026, as of July 2026. GNF plans to submit a full license amendment request for a HALEU fabrication facility, capable of handling up to 20 weight percent enrichment, in the third quarter of 2025.[9][13]

Related nodes

Sources

1. framatome.com · 2026-07-09T07:27:20
2. fortune.com · 2026-06-15T16:03:20
3. westinghousenuclear.com
4. eia.gov
5. energy.gov · November 17, 2025
6. energy.gov
7. federalregister.gov · 2022-03-15
8. powermag.com
9. powermag.com
10. westinghousenuclear.com
11. westinghousenuclear.com
12. framatome.com · July 23, 2026
13. ans.org · July 21, 2025
14. catf.us
15. ant.epri.com
16. x-energy.com · July 15, 2026