First concrete marks start of safety-related construction for Hermes test reactor

Drilling begins. (Photo: Kairos Power)

Kairos Power announced this morning that safety-related nuclear construction has begun at the Oak Ridge, Tenn., site where the company is building its Hermes low-power test reactor. Hermes, a scaled demonstration of Kairos Power’s fluoride salt–cooled, high-temperature reactor technology, became the first non–light water reactor to receive a construction permit from the Nuclear Regulatory Commission in December 2023. The company broke ground at the site in July 2024.

Oak Ridge’s Isotek dramatically increases world supply of Th-229

Wed, May 7, 2025, 5:02PMNuclear News
Isotek employees load canisters of Th-229 that will go to TerraPower to support cancer treatment research. (Photo: DOE)

Workers with Oak Ridge Office of Environmental Management contractor Isotek have surpassed a significant milestone in the supply of medical radioisotopes, extracting more than 15 grams of rare thorium-229 through the Department of Energy’s Thorium Express Project.

TVA files for construction permit for Clinch River SMR

Tue, May 6, 2025, 2:29PMNuclear News

The U.S. Nuclear Regulatory Commission this week shared a portion of the construction permit application from the Tennessee Valley Authority to build a small modular reactor at the Clinch River nuclear site in Oak Ridge, Tenn.

In anticipation of TVA’s filing, NRC staff scheduled two public meetings in Oak Ridge for today, to discuss the agency’s process for licensing nuclear power plants.

What does the nuclear supply chain need now?

Mon, May 5, 2025, 2:29PMNuclear NewsDoug VanTassell

Doug VanTassell

Certainty!

As CEO of Paragon, I’m excited by the momentum in our industry. But like every nuclear business leader, I grapple with the challenges of delivering projects on time amid capacity and investment constraints. While the industry’s future is bright, the timing of good news doesn’t always align with commitment orders.

Market uncertainty

For the commercial operating fleet, the past five years have been overwhelmingly positive. The private and public sectors recognize nuclear power as a reliable and clean energy source. Rising power rates have made deregulated nuclear plants profitable, while regulated markets have increased support from public utility commissions.

Ted Garrish faces Senate committee for DOE nuclear post

Fri, May 2, 2025, 2:30PMNuclear News

Garrish

A veteran nuclear leader with more than four decades of experience testified before a U.S. Senate committee on Wednesday as part of the nomination process to become the next NE-1, the Department of Energy’s assistant secretary for nuclear energy.

Theodore “Ted” Garrish appeared before the Senate Committee on Energy & Natural Resources to answer questions about how he would approach the position—which he last held from 1987 to 1989, during the Ronald Reagan administration.

Garrish told the committee he has dedicated his career to energy—especially nuclear energy—and has worked mostly in public service positions, including posts in the DOE and Office of International Affairs.

The committee will advance Garrish’s nomination to the full U.S. Senate for a final vote, but no timeline was laid out.

Idaho agrees to INL spent fuel waiver

Thu, May 1, 2025, 2:29PMRadwaste Solutions
INL’s Hot Fuel Examination Facility. (Photo: INL)

An agreement signed by the state of Idaho and the U.S. Department of Energy will open the way for a single cask of high-burnup spent nuclear fuel to be shipped from Dominion Energy’s North Anna nuclear power plant in Virgina to Idaho National Laboratory for research purposes.

IAEA Director General meets with key nuclear leaders in D.C.

Wed, Apr 30, 2025, 5:43PMNuclear News
On his recent trip to Washington, D.C., IAEA director general Rafael Mariano Grossi (right) met with Energy Secretary Chris Wright. (Photo: IAEA/D. Candano)

International Atomic Energy Agency director general Rafael Mariano Grossi recently traveled to Washington, D.C., for the first time since Trump took office in January. In his three-day visit to the capital, Grossi spoke with key nuclear leaders from around the world and in the federal government, including Energy Secretary Chris Wright and Nuclear Regulatory Commission chair David Wright, on topics including nuclear power, safety, security, funding, and nonproliferation.

INL’s new innovation incubator could link start-ups with an industry sponsor

Tue, Apr 29, 2025, 5:01PMNuclear News
Idaho National Laboratory’s Idaho Falls campus. (Photo: INL)

Idaho National Laboratory is looking for a sponsor to invest $5 million–$10 million in a privately funded innovation incubator to support seed-stage start-ups working in nuclear energy, integrated energy systems, cybersecurity, or advanced materials. For their investment, the sponsor gets access to what INL calls “a turnkey source of cutting-edge American innovation.” Not only are technologies supported by the program “substantially de-risked” by going through technical review and development at a national laboratory, but the arrangement “adds credibility, goodwill, and visibility to the private sector sponsor’s investments,” according to INL.

Argonne’s METL gears up to test more sodium fast reactor components

Fri, Apr 25, 2025, 6:47PMNuclear News
Work on Argonne's METL sodium test loop. (Photo: Argonne National Laboratory)

Argonne National Laboratory has successfully swapped out an aging cold trap in the sodium test loop called METL (Mechanisms Engineering Test Loop), the Department of Energy announced April 23. The upgrade is the first of its kind in the United States in more than 30 years, according to the DOE, and will help test components and operations for the sodium-cooled fast reactors being developed now.

Pacific Fusion: Fusing pulser innovation with General Atomics’ expertise

Thu, Apr 24, 2025, 5:10PMNuclear News
Concept art of Pacific Fusion’s planned demonstration system. (Image: Pacific Fusion)

Pacific Fusion has a staff that knows its way around pulsers and inertial fusion, and an ongoing collaboration with General Atomics. Today, the two companies are announcing plans to test Pacific Fusion’s pulser-driven inertial fusion energy concept, with commercial fusion power as the goal.

“We are building a fusion machine and testing all equipment—including components and a pulser module—at our Pacific Fusion test center,” Pacific Fusion cofounder and chief technology officer Keith LeChien told Nuclear News. “GA’s engineering expertise remains an important part of our progress, and we expect this collaboration to continue through future phases of development.”

Hanford to hold virtual meeting on proposed waste processing facility

Wed, Apr 23, 2025, 12:09PMNuclear News

The Department of Energy’s Hanford Field Office and Washington State Department of Ecology (Ecology) will hold a virtual public meeting on April 30 to learn more about the siting, construction, and operation of a proposed Contact-Handled Waste Processing Treatment and Storage Area at the DOE’s Hanford Site near Richland, Wash.

Los Alamos researchers test TRISO transportation

Tue, Apr 22, 2025, 7:43PMNuclear News
This Deimos core configuration shows the fuel, stainless steel, polyethylene, and borated polyethylene positioned for the THETA project. (Photo: DOE)

Los Alamos National Laboratory recently performed a series of customized criticality experiments to obtain data that will support the transportation of HALEU TRISO fuel, the Department of Energy announced April 21.

Nuclear advocates fight potential cuts at DOE’s Loan Programs Office

Tue, Apr 22, 2025, 5:00PMNuclear News

Nearly 60 percent of staff at the U.S. Department of Energy’s nuclear-friendly Loan Programs Office may be lost through President Trump’s deferred resignation program, the Washington Examiner reported.

According to the news outlet, 123 of the 210 current LPO employees have opted into the retirement buyout, which would amount to a 58.5 percent staffing cut in the office that helps finance new nuclear projects among other energy proposals. There is a 45-day period for federal employees older than 40 to change their minds, which could impact the final number of exiting staff.

TVA to file for Clinch River SMR construction permit by June

Mon, Apr 21, 2025, 8:45PMNuclear News
Deacy (left) speaks with senior project manager Mike McDowell (center) and civil construction manager Buck Collins (right) outside the construction trailer at the Clinch River site in Tennessee. (Photo: TVA)

In a Q&A posted on TVA’s website last week about a “new nuclear heyday,” Bob Deacy shared his vision for the Clinch River nuclear site in Oak Ridge, Tenn.—and some news about next steps for the company’s small modular reactor plans.

The Tennessee Valley Authority’s senior vice president for the Clinch River project, Deacy described his vision for up to four SMRs built on plots smaller than a football field with state-of-the-art digital equipment and a newly trained workforce providing reliable 24/7 power to the grid.

BWXT acquires Oak Ridge site as NNSA pursues unobligated enriched uranium

Fri, Apr 18, 2025, 6:00PMNuclear News

BWX Technologies Inc. has purchased about 97 acres of land in an Oak Ridge, Tenn., industrial park where the company expects to build a uranium enrichment facility using a technology called DUECE, or, Domestic Uranium Enrichment Centrifuge Experiment. DUECE was developed at Oak Ridge National Laboratory to provide enriched uranium for the Department of Energy’s National Nuclear Security Administration, and BWXT is several months into a yearlong engineering study to evaluate options for deploying a centrifuge pilot plant using DUECE.

Judge temporarily blocks DOE’s move to slash university research funding

Thu, Apr 17, 2025, 8:26PMNuclear News

A group of universities led by the American Association of Universities (AAU) acted swiftly to oppose a policy action by the Department of Energy that would cut the funds it pays to universities for the indirect costs of research under DOE grants. The group filed suit Monday, April 14, challenging a what it termed a “flagrantly unlawful action” that could “devastate scientific research at America’s universities.”

By Wednesday, the U.S. District Court judge hearing the case issued a temporary restraining order effective nationwide, preventing the DOE from implementing the policy or terminating any existing grants.

DOE report: Cost to finish cleaning up Hanford site could exceed $589 billion

Thu, Apr 17, 2025, 2:30PMRadwaste Solutions
Hanford crews break up concrete and remove contaminated soil near the site’s former K Area reactors in 2023. (Photo: DOE)

The cost to complete the cleanup of the Department of Energy’s Hanford Site in Washington state could cost as much as $589.4 billion, according to the 2025 Hanford Lifecycle Scope, Schedule, and Cost Report, which was released by the DOE on April 15. While that estimate is $44.2 billion lower than the DOE’s 2022 estimate of $640.6 billion, a separate, low-end estimate has since grown by more than 21 percent, to $364 billion.

The life cycle report, which the DOE is legally required to issue every three years under agreement with the U.S. Environmental Protection Agency and Washington State Department of Ecology (Ecology), summarizes the remaining work scope, schedule, and cost estimates for the nuclear site. For more than 40 years, Hanford’s reactors produced plutonium for America’s defense program.

Ghana takes another step in nuclear partnership with U.S., China

Thu, Apr 17, 2025, 12:12PMNuclear News

Leaders in Ghana announced recently that the country has a “framework agreement” with U.S.-based companies NuScale and Regnum Technology Group.

The announcement made by Stephen Yamoah, executive director of Nuclear Power Ghana, was reported by the Ghana News Agency on March 31. He also said Japanese firms will be working in partnership with NuScale and Regnum on the small modular reactors while the China National Nuclear Corporation will construct a large reactor.

Trump’s pick for NNSA administrator testifies before Senate committee

Thu, Apr 10, 2025, 8:00PMNuclear News

Brandon Williams appeared before the U.S. Senate’s Committee on Armed Services this week to answer questions on how he would lead the Department of Energy’s National Nuclear Security Administration, if confirmed for the job.

President Donald Trump announced Williams as his pick for the NNSA role in January. Energy Secretary Chris Wright said he was personally involved in the selection of Williams for the role, telling the Exchange Monitor in January, “He’s a smart, passionate guy [who] wants to defend our country.”

DOE commits to supplying HALEU to five advanced nuclear companies

Thu, Apr 10, 2025, 2:30PMNuclear News

The Department of Energy has announced its first round of conditional commitments to provide high-assay low-enriched uranium to five U.S. nuclear developers. According to the DOE, the delivery of HALEU will support the commercialization of advanced nuclear technologies, aiming to deliver secure, affordable, and reliable energy to Americans.