Two research scientists from Japan’s Kyoto University and Kochi University of Technology visited the West Valley Demonstration Project in western New York state earlier this fall to test their novel radiation detectors, the Department of Energy’s Office of Environmental Management announced on November 19.

Tokyo Electric Power Company announced yesterday that is has recommenced a trial exercise to retrieve nuclear fuel debris from Unit 2 of Japan’s damaged Fukushima Daiichi nuclear power plant. TEPCO is attempting to retrieve a small amount of fuel debris from Unit 2’s pressure vessel for analysis before beginning a large-scale removal of the debris.

During some of his first public remarks last week, Japan’s new economy minister Yoji Muto promoted the importance of nuclear energy for his nation.

Muto said the new administration—including newly appointed prime minister Shigeru Ishiba—plans to restart “as many reactors as possible so long as they are safe,” reported NucNet, a nuclear-centered news agency in Brussels.

The International Atomic Energy Agency has found that Japan’s planned approach for recycling and disposing of soil and radioactive waste from decontamination activities after the 2011 Fukushima Daiichi nuclear accident is consistent with the agency’s safety standards.

Tokyo Electric Power Company has added an English-language version of its Fuel Debris Portal Site to its website. According to the company, the portal is intended to deliver information pertaining to melted nuclear fuel debris at the Fukushima Daiichi site to the public in an easy-to-understand manner.

Tohoku University in Sendai, Japan, was the site of an advanced nuclear reactor workshop in late May that was hosted by the Fastest Path to Zero Initiative of the University of Michigan and Tohoku’s Center for Fundamental Research on Nuclear Decommissioning. The event was co-organized by the U.S. Consulate in Sapporo, Japan, and the Atlantic Council, which is associated with the North Atlantic Treaty Organization. The workshop, “The Potential Contribution of Advanced Nuclear Energy Technologies to the Decarbonization and Economic Development of Japan and the U.S.,” featured numerous American and Japanese academic authorities, government policymakers, executives of utilities and advanced reactor developers, and leaders of nongovernmental organizations. Also participating were students from both the University of Michigan and Tohoku University.

The International Atomic Energy Agency announced on Aug. 7 that its experts have confirmed that the tritium concentration in the latest batch of water to be released from the Fukushima Daiichi nuclear power plant is far below Japan’s operational limit. Tokyo Electric Power Company (TEPCO) began discharging the treated and diluted water that day.

JT-60SA (Japan Torus-60 Super Advanced) is the world’s largest superconducting tokamak device. Its goal is the earlier realization of fusion energy (see Fig. 1). Fusion is the energy that powers the Sun, and just 1 gram of deuterium-tritium (D-T) fuel produces enormous energy—the equivalent of 8 tons of crude oil.

Last fall, the JT-60SA project announced an important milestone: the achievement of the tokamak’s first plasma. This article describes the objectives of the JT-60SA project, achievements in the operation campaign for the first plasma, and next steps.

Japan’s recent moves to boost fusion power in the nation’s energy plan and accelerate the timeline for a prototype fusion power plant come in response to increased global attention on fusion energy. Even as ITER faces delays, more than 40 private fusion developers are pursuing different technologies and competing for attention. And so are other countries, including the United Kingdom, which announced its plans for a fusion pilot plant back in 2019. Fusion companies and nations alike are responding to a growing sense that there is a race—or at least collective momentum—to commercialize fusion energy.

Japan’s Kyoto Fusioneering, a fusion startup spun out from Kyoto University, and Canadian Nuclear Laboratories have announced the formation of Fusion Fuel Cycles Inc., headquartered in Chalk River, Ontario, Canada. The joint venture extends a strategic alliance formed between the two entities in September 2023 and aims to develop and deploy deuterium-tritium (D-T) fusion fuel cycle technologies.

An International Atomic Energy Agency task force has confirmed that the discharge of treated water from Japan's Fukushima Daiichi nuclear power plant is progressing in accordance with the plan approved by Japan’s Nuclear Regulation Authority.

During a state visit to the White House by Japanese prime minister Fumio Kishida on April 10, the Department of Energy announced that U.S. and Japanese agencies had cooperated to remove all high-enriched uranium (HEU) from the Japan Materials Testing Reactor Critical Assembly (JMTRC) of the Japan Atomic Energy Agency (JAEA) two years ahead of schedule.

International Atomic Energy Agency experts have confirmed that the tritium concentration in the fourth batch of treated water released from Japan’s Fukushima Daiichi nuclear power plant is far below the country’s operational limit.

The Japan-U.S. Decommissioning Workshop Series continues on February 8–9 when its second forum meets to discuss the handling of low-level radioactive waste (LLW) generated during the decommissioning process and how improved LLW management can reduce risk.

Registration for the online event is required. The registration deadline is 2:00 a.m. (EST) on February 5.

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.