ENS Event | |
|---|---|
18:42 Mar 9, 2004 | |
| Title | Invalid System Actuation Due to Momentary Power Interruption |
| Event Description | This report is being made under 10 CFR 50.73(a)(2)(iv)(A).
Actuations occurred on the following systems (System-Actuation Status) -Primary Containment (Drywell and Suppression Chamber) Atmospheric Control Isolation Valves - Complete -Drywell Vent Monitor - Partial -Off-gas Treatment - Partial -Secondary Containment - Complete -Control Room Ventilation - Complete -Standby Gas Treatment - Complete System response indicated that the cause was a momentary power interruption to a portion of the Primary Containment Isolation System Division 2 logic. Print verification determined that the system functioned as designed on loss of power. The Licensee will notify the NRC Resident Inspector. |
| Where | |
|---|---|
Cooper  Nebraska (NRC Region 4) | |
| Reporting | |
| 10 CFR 50.73(a)(1), Submit an LER, Invalid Actuation | |
| Time - Person (Reporting Time:+1049.27 h43.72 days <br />6.246 weeks <br />1.437 months <br />) | |
| Opened: | Coy Blair 10:58 Apr 22, 2004 |
| NRC Officer: | Bill Gott |
| Last Updated: | Apr 22, 2004 |
| 40697 - NRC Website
Loading map... | |
Unit 1 | |
|---|---|
| Reactor critical | Critical |
| Scram | No |
| Before | Power Operation (100 %) |
| After | Power Operation (100 %) |
WEEKMONTHYEARENS 580682025-10-06T15:13:0006 October 2025 15:13:00
[Table view]10 CFR 50.73(a)(1), Submit an LER 60-DAY Optional Telephonic Notification of Invalid Specified System Actuation ENS 537762018-10-13T05:00:00013 October 2018 05:00:00 10 CFR 50.73(a)(1), Submit an LER 60-Day Optional Telephonic Notification of Invalid Specified System Actuation ENS 524362016-10-28T07:39:00028 October 2016 07:39:00 10 CFR 50.73(a)(1), Submit an LER Invalid Actuation of Containment Isolation Valves ENS 463672010-08-31T22:37:00031 August 2010 22:37:00 10 CFR 50.73(a)(1), Submit an LER Invalid Primary Containment Isolation System Actuation Due to a Voltage Transient ENS 430972006-11-20T02:28:00020 November 2006 02:28:00 10 CFR 50.73(a)(1), Submit an LER Invalid Actuation of Primary Containment Isolation System ENS 406972004-03-09T18:42:0009 March 2004 18:42:00 10 CFR 50.73(a)(1), Submit an LER Invalid System Actuation Due to Momentary Power Interruption 2025-10-06T15:13:00 | |