ENS 42747
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ENS Event | |
|---|---|
09:00 Aug 1, 2006 | |
| Title | Audible Horn System Malfunction |
| Event Description | During a routine monthly test of the Criticality Warning System (CWS), a segment of that system (DCP & DOP Warehouse) was found to have no audible horns functioning. Processes were shutdown, the personnel evacuated and the emergency organization assembled.
The preliminary investigation found that an Uninterruptible Power Supply (UPS) that supplies power to the CWS horn amplifiers was not functioning. After a retest verified that the horns in the balance of the plant were functioning, those areas were allowed to resume operations. At the same time, the UPS for the DCP/DOP Warehouse segment of the system was replaced with a new unit and allowed to charge. Once charged, the system was tested and verified to have audible horn coverage. Operations were then allowed to restart in these areas. As of approximately 1210 PM the CWS horns were fully operational and the facility was returned to normal operational status. Investigation of the incident is continuing including an attempt to determine the root cause of the UPS malfunction. The licensee notified Region II (J. Pelchat) and will notify State and local organizations. |
| 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:+6.27 h0.261 days <br />0.0373 weeks <br />0.00859 months <br />) | |
| Opened: | Rick Foleck 15:16 Aug 1, 2006 |
| NRC Officer: | Arlon Costa |
| Last Updated: | Aug 1, 2006 |
| 42747 - 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 | |
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