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Braidwood Generating Station has completed … Braidwood Generating Station has completed a review of seismic monitor performance. The emergency preparedness plan requires seismic monitoring instruments to diagnose an earthquake for emergency action levels (EAL) HA4 (natural and destructive phenomena affecting vital areas) or HU4 (natural and destructive phenomena affecting the protected area). Contrary to that requirement, this review identified 5 times in the past 3 years that the seismic monitor was non-functional such that emergency classification at the ALERT or UNUSUAL EVENT level could not be obtained with site instrumentation.</br>The seismic monitor is currently functional; however, the seismic monitor was determined to be non-functional on the following dates:</br> 1. April 24, 2012</br> 2. December 5, 2012</br> 3. December 20, 2012</br> 4. June 17, 2013</br> 5. October 8, 2014</br>These non-functional conditions of the seismic monitor have been corrected and were entered into the Braidwood Corrective Action Program.</br>While Exelon procedural direction allowed the use of offsite sources to obtain seismic data when the seismic monitor is incapable of assessing emergency plan Emergency Action Levels (EALs), this was not explicitly referenced in the Braidwood approved EALs. The loss of assessment capability is reportable to the NRC within 8 hours of discovery in accordance with 10 CFR 50.72(b)(3)(xiii). This report is required per 10 CFR 50.72(a)(1)(ii) as an event that occurred within 3 years of the date of discovery.</br>Corrective actions are in progress.</br>The licensee has notified the NRC Resident Inspector.e has notified the NRC Resident Inspector. +
14:41:00, 27 March 2015 +
50,933 +
17:12:00, 27 March 2015 +
14:41:00, 27 March 2015 +
Braidwood Generating Station has completed … Braidwood Generating Station has completed a review of seismic monitor performance. The emergency preparedness plan requires seismic monitoring instruments to diagnose an earthquake for emergency action levels (EAL) HA4 (natural and destructive phenomena affecting vital areas) or HU4 (natural and destructive phenomena affecting the protected area). Contrary to that requirement, this review identified 5 times in the past 3 years that the seismic monitor was non-functional such that emergency classification at the ALERT or UNUSUAL EVENT level could not be obtained with site instrumentation.</br>The seismic monitor is currently functional; however, the seismic monitor was determined to be non-functional on the following dates:</br> 1. April 24, 2012</br> 2. December 5, 2012</br> 3. December 20, 2012</br> 4. June 17, 2013</br> 5. October 8, 2014</br>These non-functional conditions of the seismic monitor have been corrected and were entered into the Braidwood Corrective Action Program.</br>While Exelon procedural direction allowed the use of offsite sources to obtain seismic data when the seismic monitor is incapable of assessing emergency plan Emergency Action Levels (EALs), this was not explicitly referenced in the Braidwood approved EALs. The loss of assessment capability is reportable to the NRC within 8 hours of discovery in accordance with 10 CFR 50.72(b)(3)(xiii). This report is required per 10 CFR 50.72(a)(1)(ii) as an event that occurred within 3 years of the date of discovery.</br>Corrective actions are in progress.</br>The licensee has notified the NRC Resident Inspector.e has notified the NRC Resident Inspector. +
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00:00:00, 27 March 2015 +
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>.
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17:12:00, 27 March 2015 +
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14:41:00, 27 March 2015 +
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