Japanese regulators have ordered further review at a nuclear power plant in central Japan following a series of deadly earthquakes that rocked the country on New Year’s Day.

A series of earthquakes on New Year’s Day that resulted in a tsunami warning and prompted evacuations from Japan’s west coast caused no irregularities at the country’s nuclear plants, Japanese officials have reported.

Leaders of five nations that collectively represent 50 percent of the world’s uranium conversion and enrichment capacity—the United States, Canada, Japan, France, and the United Kingdom—are making a habit of meeting on the sidelines of global climate talks to pledge their commitment to securing the nuclear fuel supply chain. On December 7 at the Net Zero Nuclear Summit—an event held in Dubai, United Arab Emirates, during the UN Climate Change Conference, or COP28—representatives of those nations announced plans to “mobilize at least $4.2 billion” in government and private investment in enrichment and conversion capacity. The commitment expands on an initial civil nuclear fuel security agreement that the so-called Sapporo 5 reached in April 2023, when they met (as now, on the sidelines) during a G7 Ministers’ Meeting on Climate, Energy, and Environment in Sapporo, Japan.

One year ago today, researchers at Lawrence Livermore National Laboratory achieved a record shot at the National Ignition Facility (NIF) that set the world talking about the potential of fusion energy. And the buzz hasn’t stopped. Fusion energy is getting its most significant attention yet on the world stage at COP28 in Dubai, UAE, where John Kerry, U.S. special presidential envoy for climate, delivered a keynote address today titled “An inclusive fusion energy future,” followed by a panel discussion.

Ken Petersen
president@ans.org

There has been a lot of breathless coverage surrounding the release of mildly tritiated wastewater from the Fukushima Daiichi site, generated in no small part by people, organizations, and even nations with a political axe to grind. But here are the facts:

On August 24, 2023, Fukushima Daiichi began its first release of tritium-containing water, following the Japanese government’s plans to meet all international guidelines. The International Atomic Energy Agency, which has established a permanent office at the plant, provided on-site observation, online monitoring, and an independent analysis of the release. (The IAEA will continue to do so for all future releases.) Tokyo Electric Power Company (TEPCO) reported that analyses of water samples taken from the sea within three kilometers of the plant showed tritium concentrations below 10 becquerels per liter, well below the 700 becquerels per liter set by the utility for suspending the release, and substantially below the drinking water quality standard of 10,000 becquerels per liter set by the World Health Organization.

Operators of JT-60SA—a joint international fusion experiment being built by Japan and Europe in Naka, Japan—achieved the first tokamak plasma in the machine in late October, making it the world’s largest operational tokamak.

Senior advisor Ike White and others with the Department of Energy’s Office of Environmental Management traveled to Japan this week to attend the 7th International Forum on the Decommissioning of the Fukushima Daiichi Nuclear Power Station.

Washington, D.C. – The American Nuclear Society (ANS) supports the start of Japan’s controlled release of re-treated, diluted tritium wastewater into the sea from the Fukushima Daiichi Nuclear Power Plant (NPP), which sustained damage in the aftermath of a 2011 earthquake and tsunami.

Concept art of a tank type sodium-cooled fast reactor. (Image: MHI)

The Japanese government has chosen Mitsubishi Heavy Industries (MHI) to head up the conceptual design and research and development of a demonstration sodium-cooled fast reactor, the Tokyo-based engineering firm announced recently.

MHI is to oversee the work in partnership with Mitsubishi FBR Systems Inc. (MFBR), an MHI Group engineering company established in 2007 to develop and design fast breeder reactors.

Conceptual design work is scheduled to commence in fiscal year 2024, with operation of the unit slated for the 2040s.

Reactor roadmap: According to MHI’s announcement, in the strategic roadmap for fast-reactor development adopted by the Japanese Cabinet in December 2018, a policy was defined to assess the efficacy of several types of technologies to be developed following a competition among private-sector companies. The roadmap was subsequently revised by the Cabinet in December 2022, at which time two decisions were made: (1) to select a sodium-cooled fast reactor as the target of the conceptual design of the demonstration unit and (2) to select a manufacturer to serve as the core company in charge of the reactor’s design and requisite R&D.

Tohoku University and the University of Michigan are jointly sponsoring a series of workshops focused on sharing experiences between Japan and the United States on the decontamination and decommissioning of commercial nuclear power plants.

A full agenda for the workshop can be found here.

The deadline for registration is August 1. A registration form, along with further information, can be found here.

Steven Arndt
president@ans.org

This will be my last column in Nuclear News as president of the American Nuclear Society. Where has the year gone? For me and for all of us in the nuclear community it has been an exciting and productive 12 months. We have cheered the decision to extend Diablo Canyon operations, witnessed fuel loading and—hopefully by the time the June issue of NN is out—the start of commercial operations of Unit 3 at Vogtle, and seen significant strides forward in the licensing and deployment of small modular reactors. Internationally, we have watched the progress in the deployment of new units in the United Arab Emirates and other countries, as well as renewed commitment to nuclear in countries including Japan, South Korea, India, and the United Kingdom. All of this has been a result of both public and private investment in and commitment to nuclear.

Recently, the Inflation Reduction Act and other government actions in the United States have provided opportunities for increased investment in nuclear energy, including production tax credits and investment tax credits.

A civil nuclear fuel security agreement between the five nuclear leaders of the G7—announced on April 16 on the sidelines of the G7 Ministers’ Meeting on Climate, Energy and Environment in Sapporo, Japan—establishes cooperation between Canada, France, Japan, the United Kingdom, and the United States to flatten Russia’s influence in the global nuclear fuel supply chain.

This year marks the 25th year that ANS's Nuclear News magazine has published its Reference Section, which features a world list of nuclear power plants, maps showing worldwide plant locations, tables with information on U.S. plant renewals, and international data tables and graphics. What follows are interesting tidbits that Nuclear Newswire has picked up from this year's Reference Section, which was published in the March NN.

From the Reference Section
Five power reactors started commercial operations around the world in 2022 and five more closed, leaving the total number of operable nuclear power reactors in this 25th Annual Reference Section at 434, the same as the year before. What’s more, that number is just one more than the 433 power reactors listed in the 1st Annual Reference Section back in 1999. But make no mistake, plenty has changed over 25 years. Read on.

Researchers at Idaho National Laboratory have completed initial testing on a newly developed fuel test capsule that is expected to provide crucial performance data for sodium-cooled fast reactors. The Department of Energy announced on January 12 that the series of fuel testing experiments being carried out now at INL’s Transient Reactor Test Facility (TREAT) was developed through a joint project between the United States and Japan.

As a direct result of the war in Ukraine, several countries have changed their policies on nuclear energy—even those with long-standing nuclear phase-out plans. This February will mark one year since Russia began its invasion of Ukraine, leading to ongoing war and turning pandemic-era energy shortages into a global energy crisis. Spiking gas prices and concerns about electricity supply during the cold winter months have thrown many governments into a frenzy as they try to ease the impact on their citizens.

Countries in the process of phasing out their nuclear power had been prepared to increase their reliance on natural gas. But as Russia supplies 40 percent of the European Union’s natural gas, nations with no reliable alternative now face sky-high energy prices—even energy poverty. Across Europe and beyond, nuclear power plants slated for permanent closure have been given second chances to shore up energy supply. Nuclear power has also claimed a bigger spotlight in countries’ strategies for energy independence.

The U.S.-Japan Nuclear Security Working Group (NSWG) convened for its 11th meeting in early November in Tokyo. The group continued its efforts, begun in 2011, to strengthen global nuclear security and enhance international cooperation in peaceful nuclear activities. The meeting was originally scheduled for 2020 but was postponed because of restrictions related to the COVID-19 pandemic.

The Department of Energy’s National Nuclear Security Administration (NNSA) has signed a memorandum of understanding with Japan’s Ministry of Education, Culture, Sports, Science, and Technology (MEXT). The MOU describes their commitment to convert the Kindai University Teaching and Research Reactor (UTR-KINKI) from high-enriched uranium fuel to low-enriched uranium fuel. The nuclear nonproliferation–related agreement also calls for the secure transport of all the HEU to the United States for either downblending to LEU or disposition.

Kishida

Having already declared last month his government’s intention to return to service as many as nine idled power reactors in order to ensure stable supplies of energy this winter, Japanese prime minister Fumio Kishida yesterday called for additional restarts and endorsed the development and construction of next-generation nuclear plants, according to reports from various news outlets, including Nikkei Asia, the Washington Examiner, and the Los Angeles Times.

Kishida made the comments at the second meeting of Japan’s GX (Green Transformation) Implementation Council, a new group tasked with helping the country achieve carbon neutrality by 2050.

Aboveground atomic bomb test at the Nevada Test Site while troops look on. These clouds of material often wafted over to Utah during the 1950s. (Photo: NNSA)

In 1953, the United States detonated above­ground nuclear weapons during tests at the Nevada Test Site. In 2011, the Fukushima Daiichi meltdown occurred in Japan. Both events spread radioactive material over many miles and over population centers. Neither event resulted in any adverse health effects from that radiation.

But the response to the Fukushima event was disastrous because of the irrational and misinformed fear of radiation. That fear—not radiation—killed at least 1,600 people and destroyed the lives of at least another 200,000. That fear seriously harmed the entire economy of Japan, stopped cold the fishing industry and other agriculture in that area, and, overnight, reversed the country’s progress in addressing climate change.

The U.S. tests spread two to three times more radiation than did the events of Fukushima over the people of Utah, particularly the town of St. George. Like with Fukushima, no one was hurt, there was never any increase in cancer rates, and no one died as a result. But in Utah, the economy and people’s lives were unaffected. Why was there such a different result?

All high-enriched uranium has been removed from the Kyoto University Critical Assembly (KUCA), according to an announcement from the U.S. Department of Energy’s National Nuclear Security Administration.