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On April 26, 2016 at 2213 EDT, Watts Bar N … On April 26, 2016 at 2213 EDT, Watts Bar Nuclear Plant authorized notification of State agencies for the partial loss of the WBN Alert and Notification System (ANS) feedback system. The ANS feedback system provides monitoring capability of the off-site sirens surrounding the facility in the event of a plant Emergency. Without the feedback system in service, sirens may be activated remotely from State and local facilities but verification of successful activation is impaired. State agencies were notified to evaluate if other methods of alerting the public were warranted. </br>No compensatory methods are required for this failure, as the ANS activation feedback systems remain fully functional at the State and local facilities.</br>The cause for the loss of the ANS feedback system is under investigation.</br>This is being reported under 10 CFR 50.72(b)(2)(xi) and 10 CFR 50.72(b)(3)(xiii).</br>The NRC Senior Resident has been notified.</br>* * * UPDATE ON 4/29/16 AT 1103 EDT FROM MATTHEW MILLER TO BETHANY CECERE * * *</br>The cause of the partial loss of WBN ANS Feedback System was determined to be an equipment failure. AT&T has completed the work and the modem has been reset. The Corporate TVA Operational Duty Specialist (ODS) has been monitoring (the system) and there have been no issues identified with the feedback system. Therefore, the issue has been repaired.</br>In addition, further confirmation from the State of Tennessee and Rhea County was received that the sirens were fully functional at all times. The Feedback Monitoring System for the ANS was not available to the ODS only. Therefore, TVA Watts Bar is retracting the 10 CFR 50.72 (b)(3)(xiii) notification for Loss of Emergency Preparedness Capabilities.</br>The licensee has notified the NRC Resident Inspector.</br>Notified the R2DO (Ehrhardt).ident Inspector.
Notified the R2DO (Ehrhardt). +
02:13:00, 27 April 2016 +
51,885 +
00:01:00, 27 April 2016 +
02:13:00, 27 April 2016 +
On April 26, 2016 at 2213 EDT, Watts Bar N … On April 26, 2016 at 2213 EDT, Watts Bar Nuclear Plant authorized notification of State agencies for the partial loss of the WBN Alert and Notification System (ANS) feedback system. The ANS feedback system provides monitoring capability of the off-site sirens surrounding the facility in the event of a plant Emergency. Without the feedback system in service, sirens may be activated remotely from State and local facilities but verification of successful activation is impaired. State agencies were notified to evaluate if other methods of alerting the public were warranted. </br>No compensatory methods are required for this failure, as the ANS activation feedback systems remain fully functional at the State and local facilities.</br>The cause for the loss of the ANS feedback system is under investigation.</br>This is being reported under 10 CFR 50.72(b)(2)(xi) and 10 CFR 50.72(b)(3)(xiii).</br>The NRC Senior Resident has been notified.</br>* * * UPDATE ON 4/29/16 AT 1103 EDT FROM MATTHEW MILLER TO BETHANY CECERE * * *</br>The cause of the partial loss of WBN ANS Feedback System was determined to be an equipment failure. AT&T has completed the work and the modem has been reset. The Corporate TVA Operational Duty Specialist (ODS) has been monitoring (the system) and there have been no issues identified with the feedback system. Therefore, the issue has been repaired.</br>In addition, further confirmation from the State of Tennessee and Rhea County was received that the sirens were fully functional at all times. The Feedback Monitoring System for the ANS was not available to the ODS only. Therefore, TVA Watts Bar is retracting the 10 CFR 50.72 (b)(3)(xiii) notification for Loss of Emergency Preparedness Capabilities.</br>The licensee has notified the NRC Resident Inspector.</br>Notified the R2DO (Ehrhardt).ident Inspector.
Notified the R2DO (Ehrhardt). +
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00:00:00, 29 April 2016 +
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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