ENS 54242: Difference between revisions

v t e ENS Event
05:09 Aug 27, 2019
Title	Automatic Reactor Trip
Event Description	At 0109 EDT, with Unit 1 in Mode 1 at 100 percent power, the reactor automatically tripped due to a dropped rod causing a negative rate trip. The trip was not complex, with all systems responding normally post-trip. Operations responded and stabilized the plant. Decay heat is being removed by the auxiliary feedwater (AFW) and steam dump systems. Unit 2 is not affected. Due to the reactor protection system actuation while critical, this event is being reported as a four-hour, non-emergency notification per 10 CFR 50.72(b)(2)(iv)(B) and in accordance with 10 CFR 50.72(b)(3)(iv)(A) as an event that results in a valid actuation of the AFW system. There was no impact on the health and safety of the public or plant personnel. The NRC Resident Inspector has been notified.

ENS 54242 +/-
Where
Sequoyah Tennessee (NRC Region 2)
Reporting

10 CFR 50.72(b)(2)(iv)(B), RPS Actuation 10 CFR 50.72(b)(3)(iv)(A), System Actuation
Time - Person (Reporting Time:+-2.58 h-0.108 days <br />-0.0154 weeks <br />-0.00353 months <br />)
Opened:	Robert Camenisch 02:34 Aug 27, 2019
NRC Officer:	Andrew Waugh
Last Updated:	Aug 27, 2019
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v • d • e

v t e Emergency Notification System
Sequoyah with 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(b)(3)(iv)(A), System Actuation
WEEKMONTHYEAR2021-05-24T13:16:00 [Table view]
[ENS list for Sequoyah]

@@ Line 20: / Line 20: @@
 Operations responded and stabilized the plant. Decay heat is being removed by the auxiliary feedwater (AFW) and steam dump systems. Unit 2 is not affected.
 Due to the reactor protection system actuation while critical, this event is being reported as a four-hour, non-emergency notification per 10 CFR 50.72(b)(2)(iv)(B) and in accordance with 10 CFR 50.72(b)(3)(iv)(A) as an event that results in a valid actuation of the AFW system.
-There was no impact on the health and safety of the public or plant personnel. The NRC Resident Inspector has been notified."
+There was no impact on the health and safety of the public or plant personnel. The NRC Resident Inspector has been notified.
-| URL = https://www.nrc.gov/reading-rm/doc-collections/event-status/event/2019/20190827en.html#en54242
+| URL = https://www.nrc.gov/reading-rm/doc-collections/event-status/event/2019/20190828en.html#en54242
 }}{{unit info
 | Unit =  1

Latest revision as of 00:44, 24 February 2020