Steven Arndt
president@ans.org

It has always amazed me how broad and diverse the nuclear science and technology field is. It is one of the things that drew me to the nuclear business in the first place. The American Nuclear Society, with its eighteen technical divisions, embraces this diversity from accelerator applications and space nuclear to isotopes and robotics. We are truly a disparate group of engineers and scientists. Based on this, I guess I should not be surprised by the renewed interest we are seeing in uses of nuclear energy beyond the generation of electricity. In recent years, engineers and scientists from all around the world have focused on reducing the impact of electric energy generation on the environment and on finding ways to also reduce the impact of other industrial processes. What I have been seeing—including at COP27—is a renewed interest in nuclear power not only for electric generation but also for its unique capabilities in a diverse set of applications. To name only a few, I have seen strong interest in desalinization, hydrogen generation, process heat, and district heat.

Scientists are searching for new materials to advance the next generation of nuclear power plants. In a recent study, researchers at the Department of Energy’s Argonne National Laboratory showed how artificial intelligence could help pinpoint the right types of molten salts, a key component for advanced nuclear reactors.

In the 1960s, nuclear energy established itself as a mainstay of the electrical grid for its ability to produce carbon-­free, safe, and reliable power. Indeed, nuclear energy currently provides about 50 percent of carbon-­free electricity in the United States, but a major challenge is its cost.

On December 16 the Department of Energy reversed a decision made nearly 70 years ago by leaders of its predecessor agency, the Atomic Energy Commission, to revoke the security clearance of J. Robert Oppenheimer, the scientist who led the first group of scientists and engineers at what would eventually become Los Alamos National Laboratory as they built the first atomic bomb. While it comes far too late for Oppenheimer, his family, and his colleagues to appreciate, the McCarthy-era campaign to discredit Oppenheimer is now itself officially discredited as “a flawed process that violated the Commission’s own regulations,” in the words of the DOE’s recent announcement.

Oppenheimer’s story has been told many times by biographers and chroniclers of the Manhattan Project; a new feature film is expected in July 2023. Today, we offer a #ThrowbackThursday post that examines the scant coverage of Oppenheimer’s life and work in the pages of Nuclear News to date and draws on other historical content—and the DOE’s recent move to correct the record—to fill a few of the gaps.

For the first time ever, the Department of Energy’s Nuclear Energy University Program (NEUP) is funding research that looks at sociotechnical issues regarding the siting of nuclear power plants and spent nuclear fuel storage facilities. A number of questions at the intersection of social and nuclear concerns are being examined. How does the siting of nuclear power plants affect traditionally disadvantaged communities? How can communities have a greater voice in nuclear facility siting and development decisions? What are the livability needs for small communities experiencing an influx of engineers during the development process? At what points throughout the design and development process should decision makers incorporate social and environmental justice considerations?

On December 5, researchers at the National Ignition Facility (NIF) at Lawrence Livermore National Laboratory achieved fusion energy breakeven. It was a gain for stockpile stewardship that also—as headlines gushed prior to the Department of Energy’s December 13 announcement—boosted the prospects of inertial fusion energy (IFE). The timing of the landmark achievement may have been especially welcome to private fusion companies with inertial or hybrid magneto-inertial confinement concepts, because it occurred as the DOE was getting ready to consider applications for $50 million in funding for fusion pilot plant design work.

Work crews at the Department of Energy’s Hanford Site in Washington state are performing risk-reduction activities at the Plutonium Uranium Extraction (PUREX) plant to prepare it for eventual disposition.

“It will be a yearslong effort to get this large facility ready for disposition, and I’m encouraged by the progress to safely and efficiently advance this work,” said Andy Wiborg, the DOE’s Projects and Facilities Division team lead for Hanford’s Central Plateau cleanup project.

As Seth Grae was preparing to return home from COP27, where he attended as an American Nuclear Society delegate, he had no idea that he was about to be part of a last-minute win for nuclear energy. Grae, the founder and chief executive officer of Lightbridge Corporation (NASDAQ: LTBR), felt that the nuclear industry had exceeded expectations at the two-week conference in Sharm el-Sheikh, Egypt. The first-ever International Atomic Energy Agency pavilion dedicated solely to nuclear energy was buzzing with delegates eager to educate the public. But hours before COP27 was to end, Grae received a text—the message of which would end up reaching the conference negotiation room.

The text came from a delegate, a teenager from Sweden who spotted an issue with the preliminary draft of the final COP27 decision.

Two diversion boxes were covered with concrete to permanently close them from future use. Top, one of the boxes is shown prior to it being entombed in concrete. Bottom, the diversion box after workers placed concrete over and around the structure. (Photo: DOE)

Two previously radioactive structures have been successfully entombed at the Department of Energy’s Savannah River Site in South Carolina. The DOE’s Office of Environmental Management and the Savannah River Mission Completion (SRMC), the DOE’s liquid waste contractor at SRS, placed concrete over and around two concrete structures—called diversion boxes—that contain a series of connection points that allowed high-level radioactive waste to be transferred from one tank or facility to another.

The two boxes have been out of service for more than 30 years. As part of the closure process, both structures were previously filled with grout, rendering them inoperable.

The boxes were the first ancillary structures closed in this way under SRMC’s liquid waste contract. They are located in the F Tank Farm, a grouping of large underground waste-storage tanks. The liquid waste program at SRS has closed eight of the site’s 51 massive waste tanks by filling them with cementitious grout.

The New Mexico Environment Department (NMED) is adding several conditions to the operating permit for the Department of Energy’s Waste Isolation Pilot Plant (WIPP) near Carlsbad, N.M. The permit changes, which would prioritize the disposal of transuranic (TRU) waste generated in the state and limit the repository’s capacity, are contained in a fact sheet the NMED.

It’s official: Early in the morning on December 5 at Lawrence Livermore National Laboratory’s National Ignition Facility (NIF), the laser-triggered implosion of a meticulously engineered capsule of deuterium and tritium about the size of a peppercorn yielded, for the first time on Earth, more energy from a fusion reaction than was delivered to the capsule. The input of 2.05 megajoules (MJ) to the target heated the diamond-shelled, spherical capsule to over 3 million degrees Celsius and yielded 3.15 MJ of fusion energy output. The achievement was announced earlier today by officials and scientists representing the Department of Energy and its National Nuclear Security Administration, the White House, and LLNL during a livestreamed event.

Construction of a backup load-in station has been completed at the Hanford Site’s Effluent Treatment Facility (ETF) in Washington state.

“We broke ground on the backup facility about a year ago,” said Rob Wood, project manager for Washington River Protection Solutions, the Department of Energy’s tank operations contractor at the site. “I am proud of the team for completing this portion of the load-in expansion project and doing it safely. In phase two, expansion of the main load-in station will prepare us for 24/7 operations on the Hanford Site.”

Watch a time-lapse video of the backup load-in station construction here.

The Department of Energy’s Office of Nuclear Energy announced December 7 that its new HALEU Consortium is open for membership. And not just from U.S. enrichers, fuel fabricators, and others working in the front-end fuel cycle, but from “any U.S. entity, association, and government organization involved in the nuclear fuel cycle,” and—at the DOE’s discretion—“organizations whose facilities are in ally or partner nations.” The HALEU Consortium will essentially serve as an information clearinghouse to meet DOE-NE’s ongoing needs for firm supply and demand data as it supports the development of a commercial domestic high-assay low-enriched uranium (HALEU) infrastructure to fuel advanced reactors. The consortium is open for business almost one full year after the DOE first requested public input on its structure.

ANS will host a members-only event on December 7 from 1:00 to 2:00 p.m. EST with Jigar Shah, director of the Department of Energy’s Loan Programs Office (LPO). Craig Piercy, ANS executive director and chief executive officer, will lead the interview.

Register now: Hear about the ambitious goals of the Biden administration to decarbonize the power sector by 2035, which were highlighted in Shah’s article in the November issue of Nuclear News. Shah will also discuss how nuclear can be an important part of the decarbonized energy mix in the United States and how he believes the LPO can support the administration’s target.

Centrus Energy confirmed on December 1 that its wholly owned subsidiary American Centrifuge Operating signed a contract with the Department of Energy, which was first announced on November 10, to complete and operate a demo-scale high-assay low-enriched uranium (HALEU) gaseous centrifuge cascade.

Whether commercial demand for high-assay low-enriched uranium (HALEU) fuel ultimately falls at the high or low end of divergent forecasts, one thing is certain: the United States is not ready to meet demand, because it currently has no domestic HALEU enrichment capacity. But conversations happening now could help build the commercial HALEU enrichment infrastructure needed to support advanced reactor deployments. At the 2022 American Nuclear Society Winter Meeting, representatives from three potential HALEU enrichers, the government, and industry met to discuss their timelines and challenges during “Got Fuel? Progress Toward Establishing a Domestic US HALEU Supply,” a November 15 executive session cosponsored by the Nuclear Nonproliferation Policy Division and the Fuel Cycle and Waste Management Division.

At a moment of global crisis, in a windowless squash court below the football stadium bleachers at the University of Chicago, a group of scientists changed the world forever.

On December 2, 1942, a team of researchers led by Enrico Fermi, an Italian refugee, successfully achieved the world’s first human-­created, self-­sustaining nuclear chain reaction. Racing to beat Nazi Germany to the creation of an atomic weapon, the team of researchers, working as part of the Manhattan Project, split uranium atoms contained within a large graphite pile—Chicago Pile-­1, the first nuclear reactor ever built.

Aecon-Wachs, the U.S. division of Aecon Nuclear, has been tapped to support the Department of Energy’s goal of repurposing the unfinished Mixed Oxide Fuel Fabrication Facility at the Savannah River Site (SRS) in South Carolina. Known as Building 226-F, the facility is being transitioned into the Savannah River Plutonium Processing Facility (SRPPF) to produce plutonium pits for the nation’s stockpile of nuclear weapons.

Advanced reactors and small modular reactors with strikingly different coolants and sizes offer an array of different benefits, but when it comes to fuel cycle issues, including spent fuel and waste, they have a lot in common with conventional light water reactors. Two reports released within the last week—a National Academies of Sciences, Engineering, and Medicine (NASEM) consensus committee report two years in the making and a Department of Energy study released by Argonne National Laboratory—address the timely topic of advanced reactor fuel cycle issues. While the NASEM committee ventured to define research and infrastructure needs to support the entire nuclear power fuel cycle, inclusive of new technologies, for decades to come, the DOE report compares the front- and back-end fuel cycle metrics of three reactor designs (from NuScale Power, TerraPower, and X-energy) that have been selected for DOE cost-share–funded demonstrations within this decade. Together, these reports provide assurance that the fuel cycle needs of a fleet of new reactors can be met and point to near-term research and planning needs.

Jigar Shah

The Biden-­Harris administration has committed to decarbonizing the power sector by 2035 and the economy by 2050, while creating good jobs and promoting equity. There’s no question that the lowest-­cost, most reliable grid of the future will require clean, firm baseload power to support intermittent renewable energy.

Nuclear is such a reliable source of firm, flexible baseload power for the grid. Energy mix optimization models show that as penetration of renewables (such as solar and wind) grows, required energy storage capacity also grows, leading to increasing cost competitiveness of dispatchable carbon-­free power sources (including low-­impact hydro, geothermal energy, carbon capture and storage, zero-­carbon fuels like hydrogen, and nuclear). Nuclear power is an essential component of America’s transition to a clean electric grid to maintain reliability, resiliency, and affordability.