Japan holds nuclear disaster drill simulating Tomari plant accident

illuminem summarises for you the essential news of the day, reviewed by our editorial team. Read the full piece on The Japan Times or enjoy below:

🗞️ Driving the news: Japan conducted a major nuclear emergency preparedness exercise simulating a severe accident at Hokkaido Electric Power's Tomari nuclear plant
• The three-day drill involved national and local authorities, with approximately 8,500 residents expected to participate, as Japan continues preparations for a potential reactor restart

🔭 The context: The scenario simulated an earthquake off Hokkaido's western coast causing equipment failure and the loss of cooling at the plant's No. 3 reactor
• Prime Minister Sanae Takaichi declared a nuclear emergency during the exercise, while participants practised radiation evacuation procedures and emergency coordination
• Japan's Nuclear Regulation Authority concluded in 2025 that the reactor met new safety standards, although its detailed construction plan remains under review

🌍 Why it matters for the planet: Nuclear power can contribute to low-carbon electricity generation and energy security, but its expansion requires robust emergency preparedness and public confidence
• Japan's experience underscores the importance of disaster resilience in a country exposed to earthquakes and nuclear accident risks

⏭️ What’s next: The timing of Tomari's restart remains uncertain pending regulatory review of its detailed facility design
• Meanwhile, a legal challenge by local residents continues
• The Sapporo High Court is expected to issue its appellate ruling in January 2027 following a 2022 injunction partially granted by the district court

📈 One stat: Approximately 8,500 residents are expected to participate in the Tomari nuclear emergency drill, highlighting the scale of community preparedness efforts

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