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Japan's Mutsu Spent Fuel Interim Storage Facility May Expand Participants; KEPCO and Hokuriku Electric Power Say They Are Considering

Tokyo Electric Power Company (TEPCO) and Japan Atomic Power Company (JAPC) began contacting eight other domestic electric power companies that own nuclear power plants on August 10, asking whether they would be interested in participating in the expansion of the entities responsible for transporting spent fuel to the interim storage facility in Mutsu City, Aomori Prefecture. Among the eight companies contacted, Kansai Electric Power Company (KEPCO) and Hokuriku Electric Power Company indicated in response to the inquiries that they are considering whether to participate. In December 2025, TEPCO and JAPC had submitted a proposal to Aomori Prefecture and Mutsu City regarding the expansion of operating entities, and at that time they had also sought the intentions of these eight companies...

2026-08-12

Fujita Health University in Japan Advances Research on Expanding BNCT Indications for Deep-Seated Cancers, to Conduct 18F-FBPA PET Exploratory Evaluation

On August 10, Stella Pharma Corporation of Japan announced that it is collaborating with Fujita Health University and other institutions to advance research and development aimed at expanding Boron Neutron Capture Therapy (BNCT) to deep-seated cancers. As part of this project, Stella Pharma will participate in an exploratory study on 18F-FBPA uptake capacity in deep-seated cancers conducted by Fujita Health University. The study will use 18F-FBPA PET to evaluate the tumor accumulation of boron drugs used in BNCT in deep-seated cancers, and based on the findings, explore the possibility of expanding BNCT indications in the future. The study plans to collect data from 50 cases, including pancreatic cancer, hepatocellular carcinoma, and biliary tract cancer, to accumulate foundational evidence needed for the development of BNCT for deep-seated cancers. BNC...

2026-08-11

Automatic Shutdown of Unit 3 at Oi Nuclear Power Plant During Operation; Kansai Electric Power to Investigate Cause from the 12th

Unit 3 of the Oi Nuclear Power Plant in Fukui Prefecture, Japan, experienced an automatic shutdown during operation in the early hours of the 9th. Operator Kansai Electric Power stated that the fault is related to an internal abnormality in the generator and plans to formally begin a cause investigation from the 12th. Currently, there is no clear timeline for when the unit can resume operation. According to reports, an alarm related to loss of magnetic field occurred inside the generator used for power generation at the time of the incident, after which the generator stopped, and the reactor in operation also automatically shut down. On the 10th, Kansai Electric Power visited the Fukui Prefectural Government to apologize for the fault and report on subsequent response measures. Yuichiro Sakamoto, head of the Fukui Prefecture Disaster Prevention and Safety Division, pointed out that following a steam leak fault at Mihama Nuclear Power Plant Unit 3 in May this year, an unexpected emergency shutdown of a reactor in operation occurring within a short period may undermine public trust in nuclear safety. Local government authorities have demanded that the operator promptly identify the cause and implement measures to prevent similar issues from recurring.

2026-08-11

Japan's MEXT to Establish Industry-Academia-Government Collaboration Platform to Strengthen Nuclear Energy Human Resource Development

Japan's Ministry of Education, Culture, Sports, Science and Technology (MEXT) plans to launch a new initiative for nuclear energy human resource development, with the core approach being the establishment of an industry-academia-government collaborative organization within the Japan Atomic Energy Agency (JAEA). This organization will undertake coordination functions such as institutional design and budget allocation, and will promote closer cooperation mechanisms among universities, research institutions, and the industrial sector regarding nuclear energy education and practical training. Based on publicly available information, this arrangement is not merely about adding training courses, but rather an attempt to build a cross-sectoral human resource development platform. JAEA possesses research reactors, experimental facilities, and long-accumulated technical resources; incorporating these resources into the educational system will help bridge the gap between university classroom instruction and actual nuclear engineering field practice...

2026-08-11

Kyoto Fusioneering to Relocate U.S. Headquarters to Oak Ridge

Kyoto Fusioneering (KF) will relocate its U.S. headquarters to Oak Ridge, Tennessee, investing $46.9 million in Anderson County and creating 51 new jobs. The project will build critical fusion testing infrastructure, with a focus on supporting the development of the fusion nuclear testing facility UNITY-3. UNITY-3 is planned to be built at Oak Ridge National Laboratory (ORNL) through a public-private partnership. The facility has received support from the U.S. Department of Energy (DOE) and has been listed as a national priority in its final "Fusion Science and Technology Roadmap." According to the plan, UNITY-3 will employ a deuterium-tritium (D-T) fusion neutron source to validate tritium breeding capabilities and related performance under conditions approaching a real fusion nuclear environment...

2026-08-11

Ikata Nuclear Power Station Reports 5 Notifiable Events in July, None Causing Radiological Environmental Impact

Shikoku Electric Power Co. reported on August 10 that the five events reported to Ehime Prefecture, Ikata Town, and relevant local governments from the Ikata Nuclear Power Station in July 2026 did not fall under legally required reporting events and caused no radiological impact on the environment. The five events were as follows: On July 3, an employee of a partner company at the Ikata Nuclear Power Station experienced physical discomfort at an office location in a non-controlled area and was transported by ambulance at 17:18 that day. The employee was conscious at the time and experienced no radiation exposure or radioactive contamination. On July 16, during the decommissioning process of Unit 2 at the Ikata Nuclear Power Station, seawater leakage was discovered at the flange of the seawater outlet pipe of emergency diesel generator 2B in the reactor auxiliary building. After maintenance personnel determined that a detailed inspection of the flange was required, the leak point was isolated, and the leakage was confirmed to have stopped at 15:38 that day. The maximum estimated volume of leaked seawater was approximately 7 cubic meters, all of which was recovered in the floor drain sump within the building and did not flow outside. Subsequent inspection revealed a through-hole approximately 7 mm in diameter at the flange, and the station replaced the flange and confirmed water flow integrity, restoring normal conditions at 14:05 on July 17. This event did not affect the unit or cause radiological environmental impact, and further investigation into the cause will be conducted.

2026-08-10

Japanese research team demonstrates ion wakefield acceleration for the first time, accelerating protons to a maximum of 60 MeV

Kyushu University, the National Institutes for Quantum Science and Technology (QST), and Osaka University recently announced jointly that the research team used high-intensity laser irradiation on a foam target to experimentally demonstrate the ion wakefield acceleration mechanism for the first time, providing a new experimental foundation for research on next-generation laser-driven ion accelerators. The results were published in *Communications Physics* on August 3, Japan time. According to the report, the research aims to reproduce physical processes similar to high-energy particle acceleration in space within a laboratory setting. Traditional high-energy accelerators typically require long acceleration tubes or large ring-shaped facilities, while the strong electric fields generated by plasma waves are considered promising for advancing accelerator miniaturization. However, compared with electrons, protons and ions...

2026-08-10

Japanese research team uses PET imaging to find tau protein pathology may be involved in onset of hallucinations and delusions in middle-aged and elderly

A research team comprising the National Institutes for Quantum Science and Technology (QST), Keio University, Kyoto University, Tokyo University of Science, and other institutions recently announced that researchers used PET imaging to observe tau protein pathology in the living brains of middle-aged and elderly psychiatric patients, and believe that such pathology may be related to psychiatric symptoms such as hallucinations and delusions that first appear after age 40. Proportion of positive tau PET and amyloid PET results Middle-aged and elderly psychosis generally refers to diseases in which psychiatric symptoms such as hallucinations and delusions first appear after age 40. Previous epidemiological studies and postmortem brain tissue studies have suggested that such symptoms may be related to neurodegenerative changes associated with dementia, but due to limited techniques for precise visualization and quantification of abnormal proteins in living brains, relevant evidence has long been insufficient.

2026-08-10

Unit 3 of Japan's Ohi Nuclear Power Plant Automatically Shuts Down

Kansai Electric Power Co. announced in the early hours of the 9th that Unit 3 of the Ohi Nuclear Power Plant, located in Ohi Town, Fukui Prefecture, Japan, automatically shut down during operation. The unit has a generating capacity of 1.18 million kilowatts. According to Kansai Electric Power, at around 23:56 on the 8th, an alarm was triggered at the unit, indicating that the generator had lost the conditions required to produce a magnetic field. Subsequently, the generator automatically stopped operating, and the reactor also automatically shut down. Preliminary information suggests that the anomaly may involve the exciter, a device used to establish the magnetic field for the generator. Kansai Electric Power stated that no radioactive material leakage occurred as a result of this incident, and there was no radiological impact on nearby personnel or the environment. The cause of the malfunction...

2026-08-10

Another access control irregularity at Kashiwazaki-Kariwa Nuclear Power Station: exit gate fails to intercept unauthorized passage

Tokyo Electric Power Company (TEPCO) announced on August 7 that an irregularity related to access control occurred at the Kashiwazaki-Kariwa Nuclear Power Station. An operator improperly used his own ID card to allow a colleague who had left his ID card in the central control room to pass through the gate and exit. TEPCO stated that the access control system failed to display an error message at the time and was unable to prevent this unauthorized passage. According to disclosed information, the incident occurred during the exit process and involves management matters related to nuclear material protection. TEPCO has not yet publicly disclosed the specific date of the incident, the identities of the personnel involved, the detailed reasons why the system failed to trigger an alarm, or subsequent disciplinary actions and preventive measures. Kashiwazaki-Kariwa...

2026-08-08

Rising Seawater Temperatures Prompt New Nuclear Safety Rules: TEPCO Sets Temporary Shutdown Criteria for Kashiwazaki-Kariwa Plant

Tokyo Electric Power Company Holdings announced on August 7 that it has established a set of self-determined criteria for evaluating whether to temporarily halt nuclear reactor operations at the Kashiwazaki-Kariwa Nuclear Power Plant in Niigata Prefecture, in response to rising seawater temperatures in the surrounding area. These criteria are not mandatory requirements directly imposed by external regulatory authorities, but rather proactive measures voluntarily implemented by TEPCO based on safe operational needs. According to the conditions announced by TEPCO, the company will consider temporarily shutting down the relevant nuclear facilities when the 7-day average seawater temperature in the waters surrounding the plant exceeds 31 degrees Celsius, when water temperatures above 34 degrees Celsius are observed, or when water temperatures above 33 degrees Celsius persist for 12 hours. These numerical thresholds indicate that seawater temperature has been incorporated as a key variable in nuclear power plant operational risk management.

2026-08-08

Mutsu City Requests Submission of Revised Plan for 5,000-Ton Transport to Spent Fuel Interim Storage Facility

On August 7, Tomoya Yamamoto, Mayor of Mutsu City, Aomori Prefecture, Japan, met with representatives of Recycle Fuel Storage (RFS) and its co-investors Tokyo Electric Power Company Holdings (TEPCO HD) and Japan Atomic Power Company (JAPC), requesting the three parties to submit a revised mid-to-long-term spent nuclear fuel transport plan, with consideration given to inter-operator cooperation. The plan may involve accepting spent nuclear fuel from other electric power companies. The facility in question, located in Mutsu City, Aomori Prefecture, is currently Japan's only interim spent fuel storage facility situated outside a nuclear power plant site. Under the existing siting agreement, the facility's acceptance scope...

2026-08-08

KEK in Japan Completes World's First "Quantum Multi-Beam Utilization" Synchrotron Radiation Beamlines

On August 6, the High Energy Accelerator Research Organization (KEK) announced that the BL-11A and BL-11B beamlines at its Photon Factory (PF) synchrotron radiation experimental facility have been completed as the world's first quantum multi-beam utilization beamlines, enabling the simultaneous use of hard X-ray and soft X-ray beams. According to reports, BL-11A and BL-11B were constructed in collaboration with the Synchrotron Radiation Academic Infrastructure Network. This network consists of synchrotron radiation facilities operated by university joint-use organizations and joint-use/joint-research centers, positioned as scientific research and educational infrastructure. The main feature of the new beamlines is the ability to simultaneously use hard X-ray and soft X-ray under the same experimental conditions, completing observations that previously required separate measurements...

2026-08-07

First Validation of Novel PRI Technology: Existing PET Tracers Can Image Tissue Microenvironment

August 6, 2026 - A joint research team from the Graduate School of Engineering at the University of Tokyo and the University of York in the UK announced that they have established a novel geometric imaging principle utilizing positron three-photon decay and successfully validated Positronium Ratio Imaging (PRI) technology for the first time. This method can be used in conjunction with existing clinical PET tracers and is expected to provide a new means of observing tissue microenvironments in nuclear medicine imaging. Conceptual diagram of next-generation nuclear medicine imaging utilizing positron-3-photon decay. Current clinical PET scans primarily rely on the positron two-photon annihilation process to visualize the distribution and accumulation of tracers in the body, but they provide limited information on microenvironmental factors such as tissue hypoxia that are associated with disease malignancy...

2026-08-07

First Observation of Anti-Kaonic Nuclei in Photon Beam Experiments

The LEPS2/Solenoid collaboration, composed of researchers from the Research Center for Nuclear Physics at Osaka University, Kyoto Sangyo University, the Research Center for Advanced Quantum Beam Science at Tohoku University, Korea University, Gifu University, the Institute of Modern Physics of the Chinese Academy of Sciences, RIKEN, Kyoto University, the Institute of Physics at Academia Sinica in Taiwan, and the University of Saskatchewan in Canada, has for the first time observed nuclei containing anti-kaons in a photon beam experiment. This achievement provides new experimental evidence confirming the existence of anti-kaonic nuclei and offers important clues for understanding high-density nuclear matter and the internal structure of neutron stars. The research team conducted the experiment at the LEPS2 laser-electron photon facility at the large synchrotron radiation facility SPring-8 in Hyogo Prefecture, Japan...

2026-08-07