Features

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

This is the fourth of five articles to be 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 July-September 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

This is the second of five articles to be 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 January-March time frame—please enjoy this recap from a busy year in the nuclear community.

• Click here to see the first article in the series.

This is the first of five articles to be 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—please enjoy this recap from a busy year in the nuclear community. But first, what about ANS itself? Let’s look at some of ANS’s activities in 2021.

As 2021 closes, Nuclear News is taking a look back at some of the feature articles published each month in the magazine. The October issue focused on plant maintenance and outage management with multiple articles looking at efficient ways to deal with plant maintenance. The article below looks at the herculean effort by INL to lead a full overhaul of the Advanced Test Reactor--a task that happens about every 10 years.

Out of the frenzy of nuclear technology and engineering development at the height of the Atomic Age, a few designs stand out above the rest—designs so innovative that they would not be surpassed for years, or even decades. An example of this unsurpassed design brilliance exists in the form of Idaho National Laboratory’s Advanced Test Reactor.

“ATR is really a beautiful machine,” said Sean O’Kelly, associate lab director for the ATR Complex. “The elegant cloverleaf core and control systems were a stroke of genius that solved just about every key problem of test reactor design. The designers’ solutions to those problems give us a testing capacity and flexibility that have yet to be matched.”

In March 1972, Stephen Hanauer, a technical advisor with the Atomic Energy Commission, met with Norman Rasmussen, a nuclear engineering professor at the Massachusetts Institute of Technology. The AEC had recruited Rasmussen to develop a report, The Reactor Safety Study (WASH-1400), to estimate the probabilities and consequences of a major nuclear power plant accident. With thousands of safety components in a modern reactor, the task was mind-boggling. Rasmussen proposed a novel approach based on more powerful computers, “fault tree” methodology, and an expanding body of operational data. By calculating and aggregating probabilities for innumerable failure chains of components, he believed he could develop a meaningful estimate of overall accident risk. WASH-1400 would be a first-of-its-kind probabilistic risk assessment (PRA).

As 2021 closes, Nuclear News is taking a look back at some of the feature articles published each month in the magazine. The August issue was the annual Vendor/Contractor profile issue, with an additional focus on programs to help the current fleet compete in local energy markets. The article below looks at the Utilities Service Alliance's Advanced Remote Monitoring and Diagnostics Services program.

It is no secret that the nuclear power industry is enduring an economic crisis. Brought about largely by the impact of technological disruption across the larger energy market, a number of utilities have had no option but to prematurely shut down some nuclear plants because they could no longer compete in the regions they serve. Many others are similarly at risk.

The biggest impact of radiation in our lives may come not from radiation itself, but from regulations and guidelines intended to control exposures to man-made sources that represent a small fraction of the natural radiation around us.

Decades of research have been unable to discern clear health impacts from low levels of ionizing radiation, leading to calls for a new research program—one with a strategic research agenda focused on how the scientific understanding of the health effects of low doses (below 100 millisievert) and low dose rates (less than 5 mSv per hour) can best be augmented, applied, and communicated.

As 2021 closes, Nuclear News is taking a look back at some of the feature articles published each month in the magazine. The June issue reviewed some topics in human factors and instrumentation and controls such as the article below that looks at the NRC's review of digital instrumentation systems in the current fleet.

The Nuclear Regulatory Commission^a first formally developed infrastructure for the review of digital instrumentation and control (I&C) systems in the 1990s. Although the current fleet of nuclear power plants in the United States was originally designed and constructed with analog systems, the U.S. nuclear industry has for more than 30 years been working to upgrade these older systems with modern digital equipment.

As 2021 closes, Nuclear News is taking a look back at some of the feature articles published each month in the magazine. The May issue reviewed the economics of nuclear power and provided some great articles on nuclear power plant capacity factors, advanced reactor markets, the economic consequences of plant closures, plant closures as an opportunity for industry engagement with local communities, and the article below that looks at why the electricity markets are failing nuclear power plants.

The Biden administration has a goal to decarbonize the U.S. electricity sector by 2035.¹ Achieving this goal would require a massive nuclear power build program. The U.S. nuclear power industry’s size and historical success signal that we are in a good position to do this, but at present, the U.S. nuclear fleet is shrinking. Why is this so, and what can be done to turn the trend around?

As 2021 closes, Nuclear News is taking a look back at some of the feature articles published each month in the magazine. The April issue reviewed the current state of advanced reactors. This article looks at how the DOE and private industry are working together to realize the benefits of advanced nuclear.

As electric utilities rush to reduce carbon emissions by investing in intermittent renewables such as wind and solar, they often rely heavily on fossil fuels to provide steady baseload power.

More than 60 percent of the nation’s electricity is still generated with fossil fuels, especially coal-fired and gas-fired power plants that have the ability to quickly ramp up or ramp down power to follow loads on the electric grid. Most experts agree that even with a radical advancement in energy storage technology, relying exclusively on wind and solar to replace fossil fuels won’t be enough to maintain a stable electric grid and avoid the major impacts of climate change.