Nuclear News

Long-duration missions with limited solar exposure need a reliable power source to operate. This makes nuclear power sources (NPSs) an attractive alternative to solar energy for such missions. The implementation of the ESA Safety Policy on the Use of Nuclear Power Sources by the European Space Agency’s Independent Safety Office (ISO) provides a framework for ensuring the safe use of NPSs and sets a standard for future ESA missions. This article provides an overview of how the ISO is implementing the policy in the development and operation of the Argonaut mission, which serves as a valuable case study for understanding the practical application of the ESA safety policy and the importance of ensuring the safe use of NPSs in space.

Ignoring a last-minute plea from a long list of scientific luminaries (including Nobel laureate Steven Chu and climate scientist James Hansen) to reconsider, as well as recent polls showing pronuclear sentiment among a majority of its population, Germany shut down its last three operating nuclear power plants late Saturday, ending 60-plus years of electricity generation from fission. (Germany’s first nuclear power plant, Kahl, was commissioned in 1961 and closed in 1985.)

Craig Piercy
cpiercy@ans.org

Dear member:

Hello from our temporary headquarters in Downers Grove, Ill. Yes, after two years of twists and turns, we have finally completed the sale of our legacy La Grange Park property and are in the process of building out our new space, which will be ready for occupancy later this year.

I know many of you have memories made in “the Schoolhouse,” which served as American Nuclear Society headquarters for nearly 50 years. At one time during the golden age of paper recordkeeping, it housed nearly 100 employees. As the business of running a professional society evolved with the information age, however, so too did our workforce and space needs. Stately though it was, 555 Kensington Avenue proved simply too expensive to heat, cool, mow, plow, and otherwise maintain to an acceptable standard.

The Palisades nuclear power plant may have entered retirement, but it’s not dead yet. Plant owner Holtec International is continuing with its unprecedented effort to restart the Covert, Mich., single-unit facility, shuttered 11 months ago by previous owner Entergy.

The organizers of World Quantum Day, celebrated annually on April 14, want to shift how people think about quantum physics. What can seem like a bafflingly abstract theory tinged with science fiction is actually a fundamental description of reality, the basis of technologies we use every day, and a foundation for future applied science. Whether it’s seen through the lens of fact or fiction, quantum physics has an undeniable “cool” factor, and quantum scientists working in different fields—including fusion energy—are embracing quantum coolness to spread awareness about real science.

Fusion energy research has seen exciting recent breakthroughs. The National Ignition Facility (NIF) at Lawrence Livermore National Laboratory has achieved ignition,^1,2 and in the United Kingdom, the Culham Centre for Fusion Energy’s Joint European Torus (JET) has produced a record 59 megajoules of fusion energy.³ Against this backdrop of advances, we provide an account of the earliest fusion discoveries from the 1930s to the 1950s.* Some of this technical history has not been previously appreciated—most notably the first 1938 reporting of deuterium-tritium (DT) 14-MeV neutrons at the University of Michigan by Arthur Ruhlig.⁴ This experiment had a critical role in inspiring early thermonuclear fusion research directions. This article presents some unique insights from the extensive holdings within Los Alamos National Laboratory’s archives—including sources typically unavailable to a broad audience.

BWX Technologies announced on April 10 that its Nuclear Fuel Services subsidiary in Erwin, Tenn., has been awarded a five-year, $428 million contract from the National Nuclear Security Administration to purify and convert high-enriched uranium (HEU) from an oxide to a metal. The Phase II contract follows the successful completion by NFS of a $57.5 million contract awarded two years ago for a process line design and pilot demonstration.

The National Association of Regulatory Utility Commissioners (NARUC) and National Association of State Energy Officials (NASEO) have announced the launch of the Advanced Nuclear State Collaborative (ANSC)—an effort to bring together utility regulators and energy officials from across the nation to “enhance collective understanding” of the regulatory and policy issues facing states contemplating the deployment of new nuclear generation.

Steven Arndt
president@ans.org

Anyone who has heard me speak about the American Nuclear Society recently knows that I like to remind people of the ANS mission and vision statements. I invite people to read the exact words: Our mission is to “advance, foster, and spur the development and application of nuclear science, engineering, and technology to benefit society”; our vision is to see “nuclear technology . . . embraced for its vital contributions to improving peoples’ lives and preserving our planet.”

The meaning behind these statements is that ANS is here to help the profession save the world. I take that seriously: We are here to save the world. This month, Nuclear News is focusing on nuclear science, engineering, and technology’s role in space exploration both now and in the future. When we look at our mission, this is very fitting. The use of nuclear power systems in space goes back almost to the start of ANS. In 1961, the Transit 4A satellite became the first U.S. spacecraft to be powered by a radioisotope thermoelectric generator (RTG). Combined with solar cells, RTGs have been used on the Moon and on satellites and to explore the solar system and beyond. One of the interesting things about these power sources is that they were used to provide both provide electricity and heat to keep the systems they were supporting from freezing. Since then, additional nuclear systems have been designed and developed—including fission power reactors and nuclear thermal propulsion—that will provide significantly more power and faster space journeys.

The Defense Nuclear Facilities Safety Board (DNFSB) is scheduled to visit the Department of Energy’s Savannah River Site in South Carolina the week of May 8 to discuss ongoing safety concerns and the protection of the public and workforce, as well as the DOE’s effectiveness in addressing those concerns.

The Department of Energy’s National Nuclear Security Administration has awarded nine new grants totaling $40.8 million to minority-serving institutions (MSIs) to promote the development of a diverse, highly skilled, and enduring stream of students in STEM fields who may find careers with the NNSA. Each grant that was awarded has a three- to five-year period of performance.

Lisa D. May

Mikaela Blood

Sara M. Sanders

At the advent of space nuclear power in the 1960s, the combination of fundamental nuclear principles and first-of-its-kind spacecraft technology were the largest barriers to entry. In the modern era, however, nuclear power production and space technology have matured industries and no longer present major challenges. These days, the biggest hurdles are advanced flexible technology development, regulations and policy, and public perception, and these issues must be successfully navigated to clear the way for a nuclear future in space.

As part of the run-up to the G7 Ministers’ Meeting on Climate, Energy, and Environment in Japan on April 15–16, U.K. energy security secretary Grant Shapps met in Seoul yesterday with South Korean trade, industry, and energy minister Chang-yang Lee to discuss closer collaboration on clean energy development and energy security.

The Department of Energy’s National Nuclear Security Administration has announced the establishment of the Advisory Committee for Nuclear Security (ACNS). Formerly known as the Defense Programs Advisory Committee, the newly formed ACNS is enlisting experts with knowledge of NNSA missions to provide independent advice and recommendations to the agency’s leadership.

The Department of Energy last week announced up to $450 million in funding from the Bipartisan Infrastructure Law to advance clean energy demonstration projects at current and former mine sites. The law, officially the Infrastructure Investment and Jobs Act, was signed by President Biden in November 2021.

Canadian firms Cameco and Bruce Power have announced a 10-year extension of their long-term exclusive nuclear fuel supply arrangements, securing power generation from the eight-unit 6,507-MWe Bruce nuclear plant through 2040.

In this article, we will explore prior NASA programs that incorporated fission technology for space exploration purposes. We also will look at current programs that incorporate fission technology for deep space missions, including missions to the Moon and Mars.

With the release last week of the policy paper Powering Up Britain, the U.K. government unveiled its plan to enhance the nation’s energy security and deliver on its ambitious net-zero commitments.

“This document explains how we will diversify, decarbonize, and domesticate energy production by investing in renewables and nuclear, to power Britain from Britain,” writes U.K. secretary of state for energy security and net zero Grant Shapps in the foreword. “It sets out the extraordinary opportunities opening up in technologies like carbon capture, usage, and storage; floating offshore wind manufacturing; and hydrogen, which will not only help us reach net zero but also consolidate Britain’s position as a global leader in green energy. And it details how we will use that leadership to influence energy decarbonization internationally.”

Portland, Ore.–based PacifiCorp—owner of the soon-to-be-retired Wyoming coal plant selected in 2021 as the future site of TerraPower’s Natrium reactor demonstration project—has released its 2023 Integrated Resource Plan, which recommends the addition of two more Natrium units to the company’s generation resource mix by 2033.

Miguel Alessandro Lopez

At the University of Rhode Island, I initially enrolled as a candidate for an accelerated track to earn bachelor’s and master’s degrees in mechanical engineering, with a minor in nuclear engineering. My objective was to concentrate on reactor power design and join efforts to make nuclear energy safer, more efficient, and less stigmatized.

My plans changed after I attended a guest presentation on high-performance nuclear thermal propulsion (HP-NTP) led by Michael Houts, manager of NASA Nuclear Research at Marshall Space Flight Center. He posted his email address on one of the last slides, so I took a chance and contacted him about potential research opportunities and thesis work. As it turned out, that one little email ultimately led to four NASA-sponsored design projects at URI—two are complete, and two are in progress—as well as my thesis. My research has been on HP-NTP, specifically the centrifugal nuclear thermal rocket (CNTR) design. In that design, liquid uranium is heated to extremely high temperatures in a cylinder that is rotated between 5,000 and 7,000 revolutions per minute as liquid hydrogen passes through the center of the cylinder, where it is heated and expanded, exiting as a propellant while the liquid uranium is retained by centrifugal force.