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At 1400 hours Eastern Daylight Time (EDT) … At 1400 hours Eastern Daylight Time (EDT) on April 5, 2010, the Control Room was notified that the ability to activate the thirty-eight (38) emergency sirens within the 10 mile emergency planning zone (EPZ) radius of the plant had been lost for a period of 1 hour and 16 minutes from 2334 hours EDT on April 4, 2010, until 0050 hours on April 5, 2010. The event occurred when an Uninterruptible Power Supply (UPS), supplying radio repeaters used to activate the sirens failed. Inoperability of the repeaters impacts the ability to actuate the emergency sirens from the New Hanover County and Brunswick County Emergency Operations Centers (EOCs) as well as from the Brunswick Nuclear Plant Emergency Offsite Facility (EOF).</br>The failed UPS was reset and emergency siren activation capability was restored at 0050 hours EDT on April 5, 2010.</br>The reportability requirement associated with the inability to activate the emergency sirens was not recognized by personnel who responded to the failure and, as such, the failure was not communicated to the control room. Emergency Preparedness personnel, reviewing emergency siren computer event logs on April 5, 2010, became aware of the failure and understood its impact. This resulted in notification of the event to the control room.</br>The initial safety significance of the event is minimal. The Brunswick and North Carolina Emergency Response Plans include compensatory measures to provide warning to affected areas, if required, in the event of the loss of sirens.</br>The ability to activate the emergency sirens has been confirmed. Investigations into the cause of the UPS failure, as well as interim and long term corrective actions are in progress.</br>The NRC Senior Resident Inspector has been notified of this event.Inspector has been notified of this event. +
03:34:00, 5 April 2010 +
16:25:00, 5 April 2010 +
03:34:00, 5 April 2010 +
At 1400 hours Eastern Daylight Time (EDT) … At 1400 hours Eastern Daylight Time (EDT) on April 5, 2010, the Control Room was notified that the ability to activate the thirty-eight (38) emergency sirens within the 10 mile emergency planning zone (EPZ) radius of the plant had been lost for a period of 1 hour and 16 minutes from 2334 hours EDT on April 4, 2010, until 0050 hours on April 5, 2010. The event occurred when an Uninterruptible Power Supply (UPS), supplying radio repeaters used to activate the sirens failed. Inoperability of the repeaters impacts the ability to actuate the emergency sirens from the New Hanover County and Brunswick County Emergency Operations Centers (EOCs) as well as from the Brunswick Nuclear Plant Emergency Offsite Facility (EOF).</br>The failed UPS was reset and emergency siren activation capability was restored at 0050 hours EDT on April 5, 2010.</br>The reportability requirement associated with the inability to activate the emergency sirens was not recognized by personnel who responded to the failure and, as such, the failure was not communicated to the control room. Emergency Preparedness personnel, reviewing emergency siren computer event logs on April 5, 2010, became aware of the failure and understood its impact. This resulted in notification of the event to the control room.</br>The initial safety significance of the event is minimal. The Brunswick and North Carolina Emergency Response Plans include compensatory measures to provide warning to affected areas, if required, in the event of the loss of sirens.</br>The ability to activate the emergency sirens has been confirmed. Investigations into the cause of the UPS failure, as well as interim and long term corrective actions are in progress.</br>The NRC Senior Resident Inspector has been notified of this event.Inspector has been notified of this event. +
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00:00:00, 5 April 2010 +
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>.
02:09:59, 2 March 2018 +
16:25:00, 5 April 2010 +
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0.535 d (12.85 hours, 0.0765 weeks, 0.0176 months) +
03:34:00, 5 April 2010 +
URL"URL" is a <a href="/Special:Types/URL" title="Special:Types/URL">type</a> and predefined property provided by <a rel="nofollow" class="external text" href="https://www.semantic-mediawiki.org/wiki/Help:Special_properties">Semantic MediaWiki</a> to represent URI/URL values.