SLOWPOKE-2 reactor refueled after over three decades of research

September 27, 2021, 9:30AMNuclear News
The core of SLOWPOKE-2. (Photo: CNL)

Canadian Nuclear Laboratories (CNL) announced on September 23 that it had refueled the SLOWPOKE-2 research reactor at the Royal Military College of Canada (RMC) in Kingston, Ontario. The reactor was recommissioned on September 10 after a 22-day outage.

IAEA and European Union extend nuclear safety agreement

September 27, 2021, 7:00AMNuclear News
The EU’s Massimo Garribba (left) and the IAEA’s Lydie Evrard met at last week’s 65th IAEA General Conference to extend a 2013 cooperation agreement. (Photo: C./Silva Villareal)

Some of the major achievements of the nuclear safety cooperation agreement between the International Atomic Energy Agency and the European Union (EU) include more than 100 nuclear safety review missions, environmental remediation at former uranium sites in Central Asia, and more effective radioactive waste management in Africa.

Matthew Denman: On Probabilistic Risk Assessment

September 24, 2021, 3:32PMNuclear News

Matthew Denman

Probabilistic risk assessment is a systematic methodology for evaluating risks associated with a complex engineered technology such as nuclear energy. PRA risk is defined in terms of possible detrimental outcomes of an activity or action, and as such, risk is characterized by three quantities: what can go wrong, the likelihood of the problem, and the resulting consequences of the problem.

Matthew Denman is principal engineer for reliability engineering at Kairos Power and the chair of the American Nuclear Society and American Society of Mechanical Engineers Joint Committee on Nuclear Risk Management’s Subcommittee of Standards Development. As a college student at the University of Florida, Denman took a course on PRA but didn’t enjoy it, because he did not see its connection to the nuclear power industry. Later, during his Ph.D. study at the Massachusetts Institute of Technology, his advisor was Neil Todreas, a well-known thermal hydraulics expert. Todreas was working on a project with George Apostolakis, who would leave MIT to become a commissioner of the Nuclear Regulatory Commission. The project, “Risk Informing the Design of the Sodium-Cooled Fast Reactor,” was a multi-university effort funded through a Department of Energy Nuclear Energy Research Initiative (NERI) grant. Todreas and Apostolakis were joined in this project by a who’s who of nuclear academia, including Andy Kadak (MIT, ANS past president [1999–2000]), Mike Driscoll (MIT), Mike Golay (MIT), Mike Lineberry (Idaho State University, former ANS treasurer), Rich Denning (Ohio State University), and Tunc Aldemir (Ohio State University).

Agencies assess power system performance during February freeze

September 24, 2021, 12:00PMNuclear News
Snow covering grounds of the Texas Capitol on February 15, 2021.

To prevent future winter storms from causing the kind of widespread, lethal power outages wrought by February’s frigid blast through Texas and other states, the electric and natural gas industries need to bolster their winterization and cold weather preparedness and coordination, a just-released preliminary report from the Federal Energy Regulatory Commission and North American Electric Reliability Corporation concludes.

The two agencies had announced on February 16 that they planned to open a joint inquiry to identify problems with the performance of the bulk power system during the storm and to offer solutions. A team of FERC and NERC staff members presented the report at a FERC meeting on September 23.

A presentation of the report, February 2021 Cold Weather Grid Operations: Preliminary Findings and Recommendations, is available.

Kairos Power to hold virtual information session

September 24, 2021, 9:34AMANS Nuclear Cafe
An aerial view of the ETTP site. Photo: Heritage Center, LLC

Back in July, officials from the state of Tennessee and Kairos Power met in Nashville to celebrate Kairos’s plans to construct a low-power demonstration reactor in the East Tennessee Technology Park in Oak Ridge, Tenn. The demonstration facility is a scaled-down version of Kairos’s Fluoride Salt–Cooled High Temperature Reactor (KP-FHR), dubbed Hermes. The company first announced plans in December 2020 to redevelop the ETTP’s former K-33 gaseous diffusion plant site for construction of Hermes.

NRC brainstorms ways to simplify microreactor licensing

September 24, 2021, 6:59AMNuclear News
The U.S. NRC headquarters.

The staff of the Nuclear Regulatory Commission recently released a draft white paper outlining strategies for streamlining microreactor licensing. The paper is to be used to facilitate discussion at an upcoming advanced reactor stakeholder public meeting.

“This paper,” the document emphasizes, “has not been subject to NRC management and legal reviews and approvals, and its contents are subject to change and should not be interpreted as official agency positions.”

Eleven countries newly elected to IAEA board

September 23, 2021, 3:00PMANS Nuclear Cafe

Eleven countries have been newly elected to serve on the 35-member board of governors of the International Atomic Energy Agency for the period 2021–2022. The election took place on September 23 during the plenary session of the 65th IAEA General Conference, in Vienna, Austria. The conference started on September 20 and will run through September 24.

Effort to overturn Montana’s pronuclear law advances

September 23, 2021, 12:21PMNuclear News

A Montana citizens group received the go-ahead this week to collect signatures for a ballot initiative that could wind up repealing a recently enacted law that allows the state legislature to okay the construction of nuclear power facilities without direct input from the public.

Pine forest helps safely disperse tritium at Savannah River Site

September 23, 2021, 9:30AMRadwaste Solutions
U.S. Forest Service employees Secunda Hughes (left) and Andrew Thompson inspect irrigation piping and sprinkler heads, part of a 62-acre pine plantation used to safely disperse tritium at the Savannah River Site.

The Department of Energy’s Office of Environmental Management (EM) is managing the release of tritiated water using a 62-acre plantation of pine trees and other natural resources to limit radioactively contaminated groundwater from reaching waterways on the Savannah River Site in South Carolina.

Germany: Coal tops wind energy in 2021, but there’s more to the story

September 23, 2021, 7:02AMANS Nuclear Cafe

Coal-fired plants fed the most power to Germany's electricity grid in the first half of 2021, while wind power dropped to its lowest level since 2018. As a September 13 article published on the German news site DW.com explained, the situation was blamed in part on a wind energy shortfall that is causing power price spikes across Europe.

Hot U market and simmering interest in HALEU: It boils down to demand

September 22, 2021, 3:00PMNuclear News
(Click photo to enlarge) One of 16 AC100M gas centrifuges built by Centrus Energy for HALEU production in Piketon, Ohio. (Photo: Centrus Energy)

For years, pressure has been building for a commercial path to a stable supply of high-assay low-enriched uranium (HALEU)—deemed essential for the deployment of advanced power reactors—but advanced reactor developers and enrichment companies are still watching and waiting. In contrast, the uranium spot price soared after Sprott Physical Uranium Trust, a Canadian investment fund formed in July, began buying up U3O8 supplies, causing the price to increase over 60 percent, topping $50 per pound for the first time since 2012. Fueled by growing acknowledgment that nuclear power is a necessary part of a clean energy future, uranium is the focus of attention from Wall Street to Capitol Hill.

Granholm, Grossi prepare for 2022 nuclear ministerial conference

September 22, 2021, 12:02PMNuclear News
U.S. energy secretary Jennifer Granholm and IAEA director general Rafael Mariano Grossi pose for a photo before their September 21 meeting announcing the next International Ministerial Conference on Nuclear Power in the 21st Century. (Photo: D. Calma/IAEA)

U.S. energy secretary Jennifer Granholm and International Atomic Energy Agency director general Rafael Mariano Grossi met in Vienna yesterday during the agency’s 65th General Conference to launch preparations for the next IAEA International Ministerial Conference on Nuclear Power in the 21st Century, slated for October 26–28, 2022, in Washington, D.C.

Biochemistry research could have implications in nuclear waste remediation

September 22, 2021, 9:30AMRadwaste Solutions
During a fluorescence spectroscopy experiment at LLNL, the protein lanmodulin makes radioactive curium glow when exposed to UV light in the sample to the right. The schematic (left) represents the structure of the curium-protein complex, with three curium atoms bound per molecule of protein. (Photo: LLNL)

Scientists at Lawrence Livermore National Laboratory, working in collaboration with researchers at Penn State University and Harvard Medical School, have discovered a new mechanism by which radionuclides could spread in the environment.

The research, which has implications for nuclear waste management and environmental chemistry, was published in the Journal of the American Chemical Society on September 20.

TVA gives up construction permits for Bellefonte units

September 22, 2021, 7:02AMNuclear News

Nearly 47 years after being issued construction permits for two reactors at the Bellefonte site in northeast Alabama, the Tennessee Valley Authority has decided against renewing them, essentially extinguishing any remaining hope for the project, on which the utility has reportedly spent more than $5 billion.

Three Studies in Site Remediation

September 21, 2021, 12:00PMRadwaste SolutionsJeremy Kartchner

For any nuclear power plant that has been permanently shut down, site restoration is the ultimate decommissioning goal when contracting with a utility to demolish a facility. The task, however, is not as simple as mobilizing heavy equipment and waving a wrecking ball or planting explosives to implode the facility, then loading up the debris and sending it to a landfill.

There is a real science and engineering approach necessary to safely restore the land to its original state. That has been the goal for EnergySolutions over the past decade as the company works to safely decommission shuttered nuclear power plants—packaging, transporting, and disposing of the waste, and restoring the sites for whatever reuse the owners and host communities see fit.

Results of advanced nuclear survey released

September 21, 2021, 9:30AMNuclear News

The U.S. Nuclear Industry Council has released the results of its 2021 Advanced Nuclear Survey.

The results, issued late last month, include information from 17 USNIC-member advanced nuclear developers on topics such as federal and state policies, types of reactors in development, U.S./Canadian licensing, need for control room operators, Nuclear Regulatory Commission fees, Department of Energy programs, and high-assay low-enriched uranium (HALEU). In addition, 24 companies (the 17 member firms plus seven nonmember firms) provided their perspectives on the NRC’s planned 10 CFR Part 53 regulation of advanced reactors.

Eliminated as a repository site, Germany’s Gorleben salt mine to be closed

September 21, 2021, 7:05AMRadwaste Solutions
The headframe and buildings at the Gorleben salt dome in Germany. (Photo: Wikimedia Commons)

The German government has announced that it is closing the Gorleben salt mine in the Wendland region of Lower Saxony, officially removing the site from consideration as a repository for radioactive waste. Gorleben became a target of antinuclear protests after being proposed as a potential repository in the 1970s.

IAEA boosts projections for nuclear power’s potential growth

September 20, 2021, 3:00PMNuclear News

The International Atomic Energy Agency has revised upward its projections regarding the potential growth of nuclear power’s capacity for electricity generation over the next three decades. The upward revision is the first by the IAEA since the Fukushima Daiichi accident in 2011.

Released last week, the 148-page report, Energy, Electricity and Nuclear Power Estimates for the Period up to 2050, provides detailed glimpses into possible nuclear futures in North America; Latin America and the Caribbean; Northern, Western, and Southern Europe; Eastern Europe; Africa; Western Asia, Southern Asia, and Central and Eastern Asia; Southeastern Asia; and Oceania. Global and regional nuclear power projections are presented as low and high cases.

ANS Standards Committee responds to the industry’s need for PRA and RIPB methodology

September 20, 2021, 12:04PMNuclear Newsthe Standards Committee
An artist’s rendering of the NuScale plant. (Image: NuScale)

For more than two decades, the American Nuclear Society’s Standards Committee has recognized the benefit of incorporating risk-informed and performance-based (RIPB) methodology into ANS standards to improve their effectiveness, efficiency, and transparency. In general, standards using RIPB methods with properly identified and structured objectives need less modification and can be expected to remain valid for much longer periods.

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