ENS 58043: Difference between revisions

v t e ENS Event
22:13 Nov 17, 2025
Title	HPCI Inoperable
Event Description	The following information was provided by the licensee via phone and email: At 1613 CST on November 17, 2025, it was discovered that the single train of high pressure coolant injection (HPCI) was inoperable. Due to this inoperability, the system was in a condition that could have prevented the fulfillment of a safety function; therefore, this condition is being reported as an eight-hour, non-emergency notification per 10 CFR 50.72(b)(3)(v)(D). The isolation condenser was operable during this time period. There was no impact to the health and safety of the public or plant personnel. The NRC Resident Inspector has been notified. The following additional information was obtained from the licensee in accordance with Headquarters Operations Officers Report Guidance: A fuse in the turbine stop valve circuit blew during initial system testing for unit startup.

ENS 58043 +/-
Where
Dresden Illinois (NRC Region 3)
Reporting

10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident
Time - Person (Reporting Time:+2.25 h0.0938 days <br />0.0134 weeks <br />0.00308 months <br />)
Opened:	Bora Tuncer 00:28 Nov 18, 2025
NRC Officer:	Robert A. Thompson
Last Updated:	Nov 18, 2025
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v • d • e

v t e Emergency Notification System
Dresden with 10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident
WEEKMONTHYEAR2025-11-17T22:13:00 [Table view]
[ENS list for Dresden]

Revision as of 07:20, 19 November 2025