Chubu Electric Power Company, Incorporated
Investigation Report (Disclosure Version)
Regarding the seismic motion evaluation and establishment of the reference seismic motion for the screening of compliance with new regulatory standards at the Hamaoka Nuclear Power Station, a Special Investigation Committee composed solely of external experts neutrally verified the matter after internal and external whistleblowing. Investigation period: 2026/1/5 to 9/11; investigation methods included hearings, digital forensics, questionnaires, and document review. The results will be published as a report including fact-finding, cause analysis, and recommendations for preventing recurrence.
Key Figures
- Investigation period: 2026 年 1 月 5 日〜 9 月 11 日
- Hearings: 54 名以上, total respondents 4,221 名（questionnaires）
- Investigation methods: document review, hearings, digital forensics, questionnaires, helpline
AI要約
Overview of the Investigation
A Special Investigation Committee composed solely of external experts was established regarding the seismic motion evaluation for the screening of compliance with new regulatory standards at the Hamaoka Nuclear Power Station. The purpose is to investigate and certify factual relationships and propose measures to prevent recurrence. The committee conducted 54+ hearings, digital forensics, and questionnaire surveys. Investigation period: January 5 to September 11, 2026. The disclosure version aims to ensure transparency of factual relationships and prevent recurrence.
Outlook and Disclosure
The report will be submitted to the Board of Directors of Chubu Electric Power, including organizational summaries in Appendices and Appendix 2. The investigation report is intended to strengthen corporate governance and promote consideration of recurrence prevention measures, and is not aimed at pursuing legal responsibility. The disclosure version will anonymize information from a privacy perspective. Further concrete recurrence prevention measures and explanations to internal and external stakeholders are expected.
Chubu Electric Power Company, Incorporated
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