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At 1740 CDT, VA-81A, Hydrogen Analyzer Pan … At 1740 CDT, VA-81A, Hydrogen Analyzer Panel, was declared not functional due to failing surveillance test OP-ST-VA-0006, Containment Hydrogen Monitor Monthly Check. VA-81B, Hydrogen Analyzer Panel, was previously not functional due to performance of surveillance test IC-ST-VA-0033, 18 Month Channel Calibration of Containment Hydrogen Analyzer, VA-81B. </br>This results in no Hydrogen Analyzers being available to monitor containment, which prevents being able to assess for potential loss of containment barrier for Emergency Action Level purposes via the containment hydrogen greater than 3% method.</br>USAR (Updated Safety Analysis Report) section 9.10.2.5 allows for both Hydrogen Analyzers to be out of service for up to 72 hours. </br>The licensee informed the NRC Resident Inspector.</br>* * * RETRACTION FROM ERICK MATZKE TO JOHN KNOKE AT 1152 EDT ON 9/29/10 * * *</br>Fort Calhoun Station had previously reported that the loss of both hydrogen monitors on September 15, 2010, constituted a major loss of emergency response assessment capability. Additional investigation has determined that other methods of assessment were available that would have provided sufficient indication to make the proper emergency classification. Therefore, this event is being retracted.</br>The licensee has notified the NRC Resident Inspector. Notification was sent to R4DO (Thomas Farnholtz).ation was sent to R4DO (Thomas Farnholtz). +
22:40:00, 15 September 2010 +
46,254 +
21:00:00, 15 September 2010 +
22:40:00, 15 September 2010 +
At 1740 CDT, VA-81A, Hydrogen Analyzer Pan … At 1740 CDT, VA-81A, Hydrogen Analyzer Panel, was declared not functional due to failing surveillance test OP-ST-VA-0006, Containment Hydrogen Monitor Monthly Check. VA-81B, Hydrogen Analyzer Panel, was previously not functional due to performance of surveillance test IC-ST-VA-0033, 18 Month Channel Calibration of Containment Hydrogen Analyzer, VA-81B. </br>This results in no Hydrogen Analyzers being available to monitor containment, which prevents being able to assess for potential loss of containment barrier for Emergency Action Level purposes via the containment hydrogen greater than 3% method.</br>USAR (Updated Safety Analysis Report) section 9.10.2.5 allows for both Hydrogen Analyzers to be out of service for up to 72 hours. </br>The licensee informed the NRC Resident Inspector.</br>* * * RETRACTION FROM ERICK MATZKE TO JOHN KNOKE AT 1152 EDT ON 9/29/10 * * *</br>Fort Calhoun Station had previously reported that the loss of both hydrogen monitors on September 15, 2010, constituted a major loss of emergency response assessment capability. Additional investigation has determined that other methods of assessment were available that would have provided sufficient indication to make the proper emergency classification. Therefore, this event is being retracted.</br>The licensee has notified the NRC Resident Inspector. Notification was sent to R4DO (Thomas Farnholtz).ation was sent to R4DO (Thomas Farnholtz). +
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100 +
00:00:00, 29 September 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>.
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21:00:00, 15 September 2010 +
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22:40:00, 15 September 2010 +
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