Change to the periodic inspection schedule for Ohi Power Station Unit 3
The Kansai Electric Power Company,Incorporated
Ohi Power Station Unit 3, 22nd periodic inspection
The generator automatically shut down due to the "loss-of-field" alarm issued on 8 August, and, as a result, the reactor also automatically shut down. Based on the subsequent investigation into the cause, it was decided to implement measures including replacement of the exciter.
Company response
Shutdown of the generator and reactor at Ohi Power Station Unit 3
Scheduled grid connection in late January 2027
Replacement of the exciter and other measures
Proceed steadily with the periodic inspection, prioritizing safety, with grid connection scheduled for late January 2027
| Item | Details |
|---|---|
| Event name | Change to the periodic inspection schedule for Ohi Power Station Unit 3 |
| Date of occurrence | 8 August 2026 (the date the generator automatically shut down and, as a result, the reactor also automatically shut down) |
| Date recognized / date notice received | 8 August 2026 (the date the loss-of-field alarm was issued) |
| Subject Entity | The Kansai Electric Power Company,Incorporated |
| Target Locations / Products | Ohi Power Station Unit 3, 22nd periodic inspection |
| Cause | The generator automatically shut down due to the "loss-of-field" alarm issued on 8 August, and, as a result, the reactor also automatically shut down. Based on the subsequent investigation into the cause, it was decided to implement measures including replacement of the exciter. |
| Suspended operations | Shutdown of the generator and reactor at Ohi Power Station Unit 3 |
| Scheduled resumption date | Scheduled grid connection in late January 2027 |
| Measures to prevent recurrence | Replacement of the exciter and other measures |
| Outlook | Proceed steadily with the periodic inspection, prioritizing safety, with grid connection scheduled for late January 2027 |
Items this document does not state (15)
These are items the company does not state in this document. We do not leave them blank, nor fill them in from other sources or by inference.
The reasons the company gives
The company's own explanation, not something inferred from the numbers.Following the automatic shutdown of the generator and reactor caused by the "loss-of-field" alarm issued on 8 August, the schedule for measures including replacement of the exciter was reviewed based on the investigation into the cause. As a result, a restart is now considered feasible.