ENS 42979
ENS Event | |
|---|---|
10:00 Nov 9, 2006 | |
| Title | Failure of Warning Horns |
| Event Description | At 0500 on 11/09/06, during a routine monthly test of the Criticality Warning System (CWS), a segment of the system covering the Dry Conversion Process (DCP) was found to have no functioning evacuation horns. Appropriate personnel were notified, the DCP processes were shut down, DCP personnel evacuated, and the area cordoned off. The activation of the evacuation horns in the balance of the plant were fully functional.
A follow-up test was immediately scheduled for 0900. The building was evacuated and the emergency organization assembled in accordance with normal procedures. During this test, the DCP horns again failed to function. The Emergency Director determined that the processes stay shut down and all personnel remain out of the area while investigations and testing were conducted. The problem was located in the interface between the Data Acquisition Modules (DAM's) and the Auto-Call system that initiates the alarm signals. After a repair was completed, a re-test was completed which confirmed functionality of the DCP process area horns. Current plans are to resume normal operations beginning with the 1500 (evening) shift. This event is being reported within 24-hours pursuant to 10CFR70.50(b)(2) as a safety equipment failure. The licensee will notify NRC Region II. |
| Where | |
|---|---|
| Global Nuclear Fuel - Americas Wilmington, North Carolina (NRC Region 2) | |
| License number: | SNM-1097 |
| Reporting | |
| 10 CFR 70.50(b)(2) | |
| Time - Person (Reporting Time:+4.42 h0.184 days <br />0.0263 weeks <br />0.00605 months <br />) | |
| Opened: | Phillip Ollis 14:25 Nov 9, 2006 |
| NRC Officer: | Mark Abramovitz |
| Last Updated: | Nov 9, 2006 |
| 42979 - NRC Website
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Global Nuclear Fuel with 10 CFR 70.50(b)(2) | |
WEEKMONTHYEARENS 497592014-01-22T18:15:00022 January 2014 18:15:00
[Table view]10 CFR 70.50(b)(2) Inoperable Criticality Warning System Local Alarm in Wilmington Field Services Center Building Number 1 ENS 481002012-07-11T21:40:00011 July 2012 21:40:00 10 CFR 70.50(b)(2) Criticality Horns Rendered Inoperable Due to Lightning Strike ENS 478512012-04-18T17:45:00018 April 2012 17:45:00 10 CFR 70.50(b)(2) Local Alarm Horn Was Found to Be Inaudible During Routine Testing ENS 477242012-03-07T18:15:0007 March 2012 18:15:00 10 CFR 70.50(b)(2) Local Alarm Horn Was Found to Be Inaudible During Routine Testing ENS 472202011-08-29T17:00:00029 August 2011 17:00:00 10 CFR 70.50(b)(2) Criticality Accident Alarm System Horn Discovered Inoperable ENS 470612011-07-14T20:55:00014 July 2011 20:55:00 10 CFR 70.50(b)(2) Inoperable Criticality Accident Alarm System Warning Horns ENS 470472011-07-12T21:30:00012 July 2011 21:30:00 10 CFR 70.50(b)(2) Inaudible Criticality Warning Siren ENS 470662011-05-01T16:00:0001 May 2011 16:00:00 10 CFR 70.50(b)(2) Previous Inoperability of Criticality Accident Alarm System Warning Circuit Not Identified ENS 447242008-12-16T11:00:00016 December 2008 11:00:00 10 CFR 70.50(b)(2) Criticality Warning System Disabled ENS 432672007-03-30T11:40:00030 March 2007 11:40:00 10 CFR 70.50(b)(2) Criticality Warning System Alarm Actuation Due to Power Fluctuation ENS 429792006-11-09T10:00:0009 November 2006 10:00:00 10 CFR 70.50(b)(2) Failure of Warning Horns ENS 427472006-08-01T09:00:0001 August 2006 09:00:00 10 CFR 70.50(b)(2) Audible Horn System Malfunction ENS 406332004-04-01T18:00:0001 April 2004 18:00:00 10 CFR 70.50(b)(2) Outdoor Area Criticality Warning System Horn Inoperative 2014-01-22T18:15:00 | |