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| Entered date | Event description | |
|---|---|---|
| ENS 56658 | 4 August 2023 15:30:00 | The following information was provided by the licensee via email: At 1320 (EDT) on 08/04/2023, with the Unit 3 in Mode 1 at 100 percent power, the reactor was manually tripped due to lowering level in the 3C steam generator. The trip was uncomplicated with all systems responding normally post-trip. Decay heat is being removed via the auxiliary feed water system and the atmospheric steam dumps. Unit 4 is not affected. This event is being reported pursuant to 10 CFR 50.72(b)(2)(iv)(B), and 10 CFR 50.72(b)(3)(iv)(A). The NRC Resident Inspector has been notified. The following additional information was obtained from the licensee in accordance with Headquarters Operations Officers Report Guidance: The cause of lowering level in the 3C steam generator was unknown at the time of the notification and will be investigated by the licensee. |
| ENS 54762 | 5 July 2020 23:05:00 | Reactor trip caused by turbine trip due to voltage regulator issues. Plant is stable. Exited the Emergency Operating Procedure Network. Auxiliary Feedwater automatically actuated and was subsequently restored to standby. The licensee notified the NRC Resident Inspector. |