ENS 58012: Difference between revisions

v t e ENS Event
23:04 Oct 28, 2025
Title	RPS Actuation and Offsite Notification
Event Description	The following is a summary of information provided by the licensee via phone and email: At 1904 EDT on 10/28/2025, there was a full reactor scram at Susquehanna Unit 2 from 100 percent power. All systems operated as expected, and the plant is stable in mode 3 with decay heat removal via the main condenser. The cause of the scram is under investigation. Unit 1 was not affected. Concurrent with the Unit 2 scram, the control room received a report of a fire outside of the protected area near the Susquehanna Steam Electric Station 500-kilovolt switchyard. The local fire department responded to the site with lights and sirens active which caused heightened public concern on social media. An event of potential public interest notification was made to the Pennsylvania Emergency Management Agency (PEMA). It was determined no fire existed, no actions were taken by the offsite fire company, and no personnel were injured during the event. Whether the reported fire and the reactor scram are related, is being investigated. This event is being reported under 10 CFR 50.72(b)(2)(iv)(B) and 10 CFR 50.72(b)(2)(xi) for the unplanned actuation of the reactor protection system while the reactor is critical and for the offsite notification to PEMA. The NRC Resident Inspector has been notified.

ENS 58012 +/-
Where
Susquehanna Pennsylvania (NRC Region 1)
Reporting

10 CFR 50.72(b)(2)(iv)(B), RPS Actuation
Time - Person (Reporting Time:+-0.12 h-0.005 days <br />-7.142857e-4 weeks <br />-1.64376e-4 months <br />)
Opened:	Kenneth Hulbert 22:57 Oct 28, 2025
NRC Officer:	Kerby Scales
Last Updated:	Oct 28, 2025
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v • d • e

v t e Emergency Notification System
Susquehanna with 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation
WEEKMONTHYEAR2025-07-22T19:10:00 [Table view]
[ENS list for Susquehanna]

@@ Line 23: / Line 23: @@
 This event is being reported under 10 CFR 50.72(b)(2)(iv)(B) and 10 CFR 50.72(b)(2)(xi) for the unplanned actuation of the reactor protection system while the reactor is critical and for the offsite notification to PEMA.
 The NRC Resident Inspector has been notified.
-| URL = https://www.nrc.gov/reading-rm/doc-collections/event-status/event/2025/20251029en.html#en58012
+| URL = https://www.nrc.gov/reading-rm/doc-collections/event-status/event/2025/20251030en.html#en58012
 }}{{unit info
 | Unit = 2

Latest revision as of 06:20, 30 October 2025