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Test results for the 12/23/04 weekly McGui … Test results for the 12/23/04 weekly McGuire Nuclear Station silent siren test performed by the counties located in the McGuire EPZ indicated a failure of 50 out of the 67 sirens. This failure involved all of the sirens located in 2 of the 4 counties located in the EPZ who have the capability to activate these sirens. This failure occurred at 1410 on 12/23/04 and is believed to be due to 'Tropospheric Ducting (TD) radio frequency interference (RFI). A strong weather front was moving through the area at the time of the testing and is believed to be the cause of the TD RFI. Interference cleared at 1425 and subsequent retest by all four affected counties were completed with a 100% success rate with all siren test indications normal. Due to the short period of time of the unavailability and the prompt restoration of function, backup route alerting was not established. Long-term resolution of this RFI problem is being developed.</br>The licensee notified the NRC Resident Inspector.ensee notified the NRC Resident Inspector. +
19:10:00, 23 December 2004 +
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17:46:00, 23 December 2004 +
19:10:00, 23 December 2004 +
Test results for the 12/23/04 weekly McGui … Test results for the 12/23/04 weekly McGuire Nuclear Station silent siren test performed by the counties located in the McGuire EPZ indicated a failure of 50 out of the 67 sirens. This failure involved all of the sirens located in 2 of the 4 counties located in the EPZ who have the capability to activate these sirens. This failure occurred at 1410 on 12/23/04 and is believed to be due to 'Tropospheric Ducting (TD) radio frequency interference (RFI). A strong weather front was moving through the area at the time of the testing and is believed to be the cause of the TD RFI. Interference cleared at 1425 and subsequent retest by all four affected counties were completed with a 100% success rate with all siren test indications normal. Due to the short period of time of the unavailability and the prompt restoration of function, backup route alerting was not established. Long-term resolution of this RFI problem is being developed.</br>The licensee notified the NRC Resident Inspector.ensee notified the NRC Resident Inspector. +
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00:00:00, 23 December 2004 +
Modification date"Modification date" is a predefined property that corresponds to the date of the last modification of a subject and is provided by <a rel="nofollow" class="external text" href="https://www.semantic-mediawiki.org/wiki/Help:Special_properties">Semantic MediaWiki</a>.
02:22:06, 2 March 2018 +
17:46:00, 23 December 2004 +
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19:10:00, 23 December 2004 +
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