Features

Universities are places where professionals, experts, and students come together to teach and learn, to conduct and disseminate research, and to dream and explore. Universities have a long history of technological innovation and development. It should therefore come as no surprise that institutes of higher education have been an integral part of the recent explosion of innovation within the advanced nuclear reactor community. Universities have not only powered workforce and technology development, but in a number of cases, they have served as the actual birthplaces of today’s advanced reactor designs.

The University of Illinois at Urbana-Champaign formed a partnership with Ultra Safe Nuclear Corporation to deploy an advanced research reactor on campus, based on a microreactor design that improves upon well-established high-temperature, gas-cooled reactor (HTGR) technology. Unlike traditional research reactors, our focus at UIUC is not on a laboratory tool to study radiation interactions with matter, or even on the production of radioisotopes. Instead, we will build a research, education, and training facility intended to help advanced reactor technology become a widely deployable, marketable, economic, safe, and reliable option for a clean energy future. If successful, the USNC-designed Micro Modular Reactor (MMR)^a would operate on UIUC’s campus with the capability to advance critical and enabling technologies required for advanced reactors to realize their full potential, while educating and training the workforce as a key step toward delivering on the technology’s promise. Microreactors can become a transformative distributed energy technology and revolutionize energy infrastructure worldwide.

Depending on the size and complexity of a decommissioning project, the transportation and disposal of radioactive waste will have an oversized impact on planning, schedule, and budget. The scope of decommissioning a site contaminated with radioactive material begins and ends with the proper and safe packaging of waste and subsequent transportation from the site to the final disposal location. Once all of the waste is gone from the site, the compliance exercise can be completed and the site released from controls (i.e., the radioactive materials license is terminated and the site is decommissioned).

Last fall, scientists from Sandia, Los Alamos, and Lawrence Berkeley national laboratories began the third phase of a years-long experiment to understand how salt and very salty water behave near hot nuclear waste containers in a salt-bed repository. Initiated in 2017, the Brine Availability Test in Salt (BATS) project is part of a spent nuclear fuel research campaign within the Department of Energy’s Office of Nuclear Energy (DOE-NE).

Europeans are taking resolute steps to reduce their output of climate-changing gases, but some countries are moving in the wrong direction.

Many countries are adding solar and wind, which are low-carbon energy sources. Some have moved to biomass, the value of which as a climate cure is not clear. A few are adding reactors, while others are defining nuclear as dirty energy and natural gas as “clean” and are changing their generation mix accordingly.

This past October, the Department of Energy’s Oak Ridge Office of Environmental Management (OREM) and its contractor Isotek successfully completed processing and disposing the low-dose inventory of uranium-233 stored at Oak Ridge National Laboratory (ORNL), ending a two-year effort that has eliminated a portion of the site’s legacy nuclear material and provided rare nuclear isotopes for next-generation cancer treatment research.

Imagine life without refrigeration, television, clean cooking facilities, clean water, clothes washers, and electric lights. For the roughly 1 billion people around the world without access to electricity, energy poverty is a reality that drastically reduces their quality of life and economic opportunities.

At the same time, fossil fuels currently provide more than 60 percent of electricity and about 80 percent of energy worldwide, even as global carbon dioxide levels are higher than at any point in at least the past 800,000 years.

The organization of the commercial fuel cycle with the geographical separation of waste disposal facilities from other nuclear facilities is a historical artifact. There are large economic and institutional incentives to collocate many fuel cycle facilities with the repository. Similarly, there are large economic and institutional incentives to collocate proposed fission battery factories and nuclear hydrogen/synthetic fuel (synfuel) gigafactories with other waste management facilities (used fuel storage, low-level waste disposal, etc.) to create nuclear technology hubs that create economic savings, generate jobs and tax revenue, and simplify waste management.

In March 2012, during the Nuclear Security Summit in Seoul, South Korea, the governments of Canada and the United States committed to work cooperatively to repatriate approximately 6,000 gallons of high-enriched uranyl nitrate liquid (HEUNL) target residue material (TRM) stored at the Chalk River Laboratories in Ontario to the U.S. Department of Energy’s Savannah River Site in South Carolina. The announcement was part of a larger agreement between the two countries to reduce proliferation risks by consolidating high-enriched uranium at a smaller number of secure locations.

We’ve all heard the stories of lost treasures being found in dust-­filled attics, locked away in forgotten wall safes, or hidden in secret compartments of antique desks. Some of these true accounts, such as a rare copy of the Declaration of Independence hidden behind wallpaper or an authentic Van Gogh relegated to collecting dust in an attic, can lead to seven-­ and eight-­figure jackpots when the discoveries are made.

What about our own treasures locked away in long-­forgotten data storage drives or plant process computers? Imagine that you could gain keen insight into every operational issue you have by using the data you’ve been collecting for decades. In a nuclear power plant, data is routinely generated and collected for a myriad of purposes—whether it be for core monitoring, exposure accounting, equipment monitoring, or other reasons. While that data may serve its primary function exceedingly well, the information contained within it and in the aggregate is profoundly richer than most could imagine.

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.

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.

Designing a reactor is complicated but building one may be harder. Even companies that have had lots of practice haven’t always done it well. And all the power reactors in service today were built by companies that had years of experience in other kinds of big steam-electric power plants. In contrast, some of the creative new designs now moving toward commercialization come from start-ups that have never built anything at all. How should they prepare?

As we begin a new year, it is natural not only to look back (see page 24 for top news stories of 2021) but also to look forward. Nuclear News reached out to leaders in the nuclear community to get their predictions on what 2022 has in store, whether broadly or for their specific areas within the community. Although the responses below are wide-ranging and varied, one thing is made clear by all of the respondents: 2022 will see growth and opportunity. The future for nuclear is bright.

This is the fifth of five articles posted today to look back at the top news stories of 2021 for the nuclear community. The full article, "Looking back at 2021,"was published in the January 2022 issue of Nuclear News.

Quite a year was 2021. In the following stories, we have compiled what we feel are the past year’s top news stories from the October-December time frame—please enjoy this recap from a busy year in the nuclear community.

• Click here to see the first article in the series
• Click here to see the second article in the series
• Click here to see the third article in the series
• Click here to see the fourth article in the series