RHUs arranged in a spacecraft structure cutaway. (Photo: Perpetual Atomics)
U.K.-based Perpetual Atomics and U.S.-based QSA Global claim to have achieved a major step forward in processing americium dioxide to fuel radioisotope power systems used in space missions. Using an industrially scalable process, the companies said they have turned americium into stable, large-scale ceramic pellets that can be directly integrated into sealed sources for radioisotope power systems, including radioisotope heater units (RHUs) and radioisotope thermoelectric generators (RTGs).
Rendering of MCRE. (Image: INL)
Idaho National Laboratory has announced the creation of the first batch of enriched uranium chloride fuel salt for the Molten Chloride Reactor Experiment (MCRE). INL said that its fuel production team delivered the first fuel salt batch at the end of September, and it intends to produce four additional batches by March 2026. MCRE will require a total of 72–75 batches of fuel salt for the reactor to go critical.
INL operations staff members prepare to unload casks containing TRISO fuel that will power Project Pele. (Photo: DOE)
This week, BWX Technologies, alongside Idaho National Laboratory and the Department of Defense’s Strategic Capabilities Office, announced the arrival of a full core of TRISO fuel at INL’s Transient Reactor Test Facility.
Concept art of the proposed TRISO-X TX-1 fuel facility in Oak Ridge, Tenn. (Image: X-energy)
Due to the days lost to the government shutdown, the Nuclear Regulatory Commission has extended the public comment period for a draft environmental impact statement for the TX-1 advanced nuclear fuel fabrication facility being built in Oak Ridge, Tenn.
Work starts on X-energy’s advanced fuel fabrication facility in Oak Ridge, Tenn. (Photo: X-energy)
Small modular reactor developer X-energy and its subsidiary TRISO-X announced yesterday the start of aboveground construction for its TX-1 advanced nuclear fuel fabrication facility in Oak Ridge, Tenn. The first-in-the-nation facility will be the first of two Oak Ridge facilities built to manufacture the company’s TRISO fuel for use in its Xe-100 SMR.
Concept art of the Aurora Powerhouse. (Image: Oklo)
The Department of Energy’s Idaho Operations Office has approved the Nuclear Safety Design Agreement (NSDA) for Oklo Inc.’s Aurora Fuel Fabrication Facility (A3F) at Idaho National Laboratory. The A3F is being built to fabricate fuel assemblies for Oklo’s Aurora Powerhouse, a liquid metal–cooled, metal-fueled fast reactor with a maximum power of 75 MWe.
The Advanced Test Reactor site at Idaho National Laboratory. (Photo: INL)
Advanced reactor and fuel developer X-energy has officially begun confirmatory irradiation testing at Idaho National Laboratory on its TRISO-X fuel. The testing, which is taking place over the course of the next 13 months, will evaluate the fuel across a variety of operating scenarios and—if all goes according to plan—will be instrumental in qualifying it for commercial use.
JNFL’s Rokkasho uranium enrichment plant. (Photo: JNFL)
President Trump is in Japan today, with a visit with new Prime Minister Sanae Takaichi on the agenda. Takaichi, who took office just last week as Japan’s first female prime minister, has already spoken in favor of nuclear energy and of accelerating the restart of Japan’s long-shuttered power reactors, as Reuters and others have reported. Much of the uranium to power those reactors will be enriched at Japan’s lone enrichment facility—part of Japan Nuclear Fuel Ltd.’s Rokkasho fuel complex—which accepted its first delivery of fresh uranium hexafluoride (UF₆) in 11 years earlier this month.
INL researchers inspect a sample from the HALEU purification solvent extraction process. (Photo: INL)
Idaho National Laboratory is playing a key role in helping the U.S. Department of Energy meet near-term needs by recovering HALEU from federal inventories, providing critical support to help lay the foundation for a future commercial HALEU supply chain. INL also supports coordination of broader DOE efforts, from material recovery at the Savannah River Site in South Carolina to commercial enrichment initiatives.
May 26, 2025, 9:50AMUpdated October 17, 2025, 4:55PMNuclear NewsCory Hatch Commercial nuclear fuel rods being unloaded from cask inside a HFEF hot cell. (Photo: INL)
At the Idaho National Laboratory Hot Fuel Examination Facility, containment box operator Jake Maupin moves a manipulator arm into position around a pencil-thin nuclear fuel rod. He is preparing for a procedure that he and his colleagues have practiced repeatedly in anticipation of this moment in the hot cell.
The Savannah River Site’s H Tank Farm holds high-level waste byproducts from the HEU recovery process in H Canyon. (Photo: SRNS)
As the only Department of Energy Office of Environmental Management–sponsored national lab, Savannah River National Laboratory has a history deeply rooted in environmental stewardship efforts such as nuclear material processing and disposition technologies. SRNL’s demonstrated expertise is now being leveraged to solve nuclear fuel supply -chain obstacles by providing a source of high-assay low-enriched uranium fuel for advanced reactors.
Urenco USA staff outside the Eunice, N.M., enrichment facility. (Photo: Urenco)
The Nuclear Regulatory Commission has authorized Urenco USA to enrich uranium up to 10 percent U-235 following changes to plant systems and procedures and an operational readiness review. The company announced the news today, two days after the NRC issued its authorization on September 30 and said that all existing and future cascades at its Eunice, N.M., enrichment facility will be licensed to produce both low-enriched uranium, typically enriched to 5 percent fissile U-235, and LEU+, between 5 and 10 percent U-235.