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Fort Calhoun Station is improving (upgradiFort Calhoun Station is improving (upgrading) the emergency siren system. This evening during the upgrade the sirens will be inoperable for a short period between 1830 and 2400 today. Fort Calhoun will inform the HOO when the sirens are returned to operation following this evenings maintenance.</br>The licensee notified the states of Nebraska and Iowa and local authorities in both states of the siren outage.</br>* * * UPDATE FROM JOHN FICKLE TO DONG PARK AT 0210 EDT ON 4/28/11 * * *</br>The emergency siren system maintenance was complete and all sirens were restored to service at 0010 CDT on 4/28/11. The licensee notified the states and local authorities.</br>Notified R4DO (Powers).</br>* * * UPDATE FROM ERIK MATZKE TO CHARLES TEAL AT 1236 EDT ON 4/28/11 * * *</br>Fort Calhoun Station is improving (upgrading) the emergency siren system. Today during the upgrade, the sirens will be inoperable for a short period between 1130 CDT and 1210 CDT today. Fort Calhoun will inform the HOO when the sirens are returned to operation following this maintenance.</br>Notified R4DO (Powers), State and local government.</br>* * * UPDATE FROM ERIK MATZKE TO CHARLES TEAL AT 1251 EDT ON 4/28/11 * * *</br>The emergency siren system maintenance was complete and all sirens were restored to service at 1150 CDT on 4/28/11. The licensee notified the states and local authorities.</br>* * * UPDATE FROM ERIK MATZKE TO CHARLES TEAL AT 1415 EDT ON 4/28/11 * * *</br>Continuing maintenance on the sirens determined that they are not responding correctly. Troubleshooting is in progress. There is not an estimated time to return the sirens to service at this time. Emergency planning personnel have been contacted and contingency actions are in place. The station will contact the HOO when the issue is resolved.</br>Notified R4DO (Powers).</br>* * * UPDATE FROM ERIK MATZKE TO CHARLES TEAL AT 1529 EDT ON 4/28/11 * * *</br>The emergency siren system maintenance was complete and all sirens were restored to service at 1529 CDT on 4/28/11. The licensee notified the states and local authorities. </br>Notified R4DO (Powers).</br>* * * UPDATE FROM ERIK MATZKE TO DONG PARK AT 0848 EDT ON 4/29/11 * * *</br>Fort Calhoun Station is improving (upgrading) the emergency siren system. Today during the upgrade, the sirens are anticipated to be inoperable for an hour or two during the period between 0755 (CDT) and 1000 (CDT) today. The emergency planning staff has been informed and compensatory measures are in place. Fort Calhoun will inform the HOO when the sirens are returned to operation following this maintenance.</br>The licensee notified the states and local authorities, as well as the NRC Resident Inspector. </br>Notified R4DO (Powers).</br>* * * UPDATE FROM ERIK MATZKE TO CHARLES TEAL AT 1201 EDT ON 4/29/11 * * *</br>The emergency siren system maintenance was complete and all sirens were restored to service at 1030 CDT on 4/29/11. The licensee notified the states and local authorities.</br>Notified R4DO (Powers).local authorities. Notified R4DO (Powers).  
23:00:00, 27 April 2011  +
46,795  +
19:05:00, 27 April 2011  +
23:00:00, 27 April 2011  +
Fort Calhoun Station is improving (upgradiFort Calhoun Station is improving (upgrading) the emergency siren system. This evening during the upgrade the sirens will be inoperable for a short period between 1830 and 2400 today. Fort Calhoun will inform the HOO when the sirens are returned to operation following this evenings maintenance.</br>The licensee notified the states of Nebraska and Iowa and local authorities in both states of the siren outage.</br>* * * UPDATE FROM JOHN FICKLE TO DONG PARK AT 0210 EDT ON 4/28/11 * * *</br>The emergency siren system maintenance was complete and all sirens were restored to service at 0010 CDT on 4/28/11. The licensee notified the states and local authorities.</br>Notified R4DO (Powers).</br>* * * UPDATE FROM ERIK MATZKE TO CHARLES TEAL AT 1236 EDT ON 4/28/11 * * *</br>Fort Calhoun Station is improving (upgrading) the emergency siren system. Today during the upgrade, the sirens will be inoperable for a short period between 1130 CDT and 1210 CDT today. Fort Calhoun will inform the HOO when the sirens are returned to operation following this maintenance.</br>Notified R4DO (Powers), State and local government.</br>* * * UPDATE FROM ERIK MATZKE TO CHARLES TEAL AT 1251 EDT ON 4/28/11 * * *</br>The emergency siren system maintenance was complete and all sirens were restored to service at 1150 CDT on 4/28/11. The licensee notified the states and local authorities.</br>* * * UPDATE FROM ERIK MATZKE TO CHARLES TEAL AT 1415 EDT ON 4/28/11 * * *</br>Continuing maintenance on the sirens determined that they are not responding correctly. Troubleshooting is in progress. There is not an estimated time to return the sirens to service at this time. Emergency planning personnel have been contacted and contingency actions are in place. The station will contact the HOO when the issue is resolved.</br>Notified R4DO (Powers).</br>* * * UPDATE FROM ERIK MATZKE TO CHARLES TEAL AT 1529 EDT ON 4/28/11 * * *</br>The emergency siren system maintenance was complete and all sirens were restored to service at 1529 CDT on 4/28/11. The licensee notified the states and local authorities. </br>Notified R4DO (Powers).</br>* * * UPDATE FROM ERIK MATZKE TO DONG PARK AT 0848 EDT ON 4/29/11 * * *</br>Fort Calhoun Station is improving (upgrading) the emergency siren system. Today during the upgrade, the sirens are anticipated to be inoperable for an hour or two during the period between 0755 (CDT) and 1000 (CDT) today. The emergency planning staff has been informed and compensatory measures are in place. Fort Calhoun will inform the HOO when the sirens are returned to operation following this maintenance.</br>The licensee notified the states and local authorities, as well as the NRC Resident Inspector. </br>Notified R4DO (Powers).</br>* * * UPDATE FROM ERIK MATZKE TO CHARLES TEAL AT 1201 EDT ON 4/29/11 * * *</br>The emergency siren system maintenance was complete and all sirens were restored to service at 1030 CDT on 4/29/11. The licensee notified the states and local authorities.</br>Notified R4DO (Powers).local authorities. Notified R4DO (Powers).  
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00:00:00, 29 April 2011  +
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02:07:19, 2 March 2018  +
19:05:00, 27 April 2011  +
false  +
false  +
-0.163 d (-3.92 hours, -0.0233 weeks, -0.00537 months)  +
23:00:00, 27 April 2011  +
Nebraska +  and Iowa +
Emergency Sirens Intermittently Inoperable Due to Upgrading  +
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1  +