ENS 48199
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ENS Event | |
|---|---|
09:52 Aug 17, 2012 | |
| Title | Unusual Event Declared Due to the Unplanned Loss of Annunciators > 15 Minutes |
| Event Description | At 0552 EDT Control Room Operators experienced a Loss of Annunciators. At 0607 EDT, the licensee declared an Unusual Event per EAL SU4.1, " Unplanned loss of most or all Annunciators or Indicators associated with Safety Systems on the RTGB [Remote Turbine Gage Board] Sections A and B, Primary System Annunciators and Indicators > 15 minutes." During an alarm test, the annunciators lit up as expected but did not clear at the completion of the test.
Exit criteria for the Unusual Event will be restoration of the annunciator functions. The licensee has compensatory measures in effect. ERFIS [Emergency Response Facility Information System] and the normal RTGB instruments are available. The licensee notified the state and informed the NRC Resident Inspector. Notified Other FEDS (FEMA, DHS and NNSA via email).
On August 17, 2012 at 0940 EDT, the licensee terminated the Unusual Event based on restoring annunciator capability. The licensee notified the NRC Resident Inspector and has terminated ERDS transmission. Notified NRR-EO(Thomas), R2DO(Guthrie), IRD(Gott) and other FEDS (FEMA, DHS and NNSA via email) |
| Where | |
|---|---|
Robinson  South Carolina (NRC Region 2) | |
| Reporting | |
| Emergency class: | Unusual Event |
| 10 CFR 50.72(a) (1) (i), Emergency Class Declaration | |
| Time - Person (Reporting Time:+-3.33 h-0.139 days <br />-0.0198 weeks <br />-0.00456 months <br />) | |
| Opened: | Brian Dale 06:32 Aug 17, 2012 |
| NRC Officer: | Steve Sandin |
| Last Updated: | Aug 17, 2012 |
| 48199 - NRC Website
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Unit 2 | |
|---|---|
| Reactor critical | Critical |
| Scram | No |
| Before | Power Operation (100 %) |
| After | Power Operation (100 %) |
WEEKMONTHYEARENS 522902016-10-08T17:17:0008 October 2016 17:17:00
[Table view]10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(a)(1)(i), Emergency Class Declaration, 10 CFR 50.72(b)(3)(iv)(A), System Actuation Unusual Event Declared Due to Loss of Offsite Power ENS 501782014-06-06T20:22:0006 June 2014 20:22:00 10 CFR 50.72(a)(1)(i), Emergency Class Declaration Notification of Unusual Event Due to a Fire Alarm Inside Containment ENS 481992012-08-17T09:52:00017 August 2012 09:52:00 10 CFR 50.72(a)(1)(i), Emergency Class Declaration Unusual Event Declared Due to the Unplanned Loss of Annunciators > 15 Minutes ENS 476182012-01-23T23:04:00023 January 2012 23:04:00 10 CFR 50.72(a)(1)(i), Emergency Class Declaration Unsual Event Declared Due to Fire Inside Containment Lasting > 15 Minutes ENS 475512011-12-23T21:20:00023 December 2011 21:20:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release, 10 CFR 50.72(a)(1)(i), Emergency Class Declaration Alert Declared Due to Halon Discharge During Testing ENS 473022011-09-29T10:02:00029 September 2011 10:02:00 10 CFR 50.72(a)(1)(i), Emergency Class Declaration Unusual Event Declared Due to Fire Alarm in the Containment ENS 457992010-03-28T22:52:00028 March 2010 22:52:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(a)(1)(i), Emergency Class Declaration, 10 CFR 50.72(b)(3)(iv)(A), System Actuation, 10 CFR 50.72(b)(2)(iv)(A), System Actuation - ECCS Discharge Alert Declared Due to Fire Affecting Safety Related Equipment ENS 412962004-12-27T05:31:00027 December 2004 05:31:00 10 CFR 50.72(a)(1)(i), Emergency Class Declaration Unusual Event Declared Due to Fire Inside Protected Area Lasting Greater than 10 Minutes 2016-10-08T17:17:00 | |
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