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At 1439 PST on 11-10-2011, while performin … At 1439 PST on 11-10-2011, while performing maintenance on the Technical Support Center (TSC) emergency filtration system, it was discovered that replacement gaskets required to restore the system were undersized and that the system could not be restored. Specifically the replacement gaskets were determined to be too small. All spare gaskets onsite were examined and determined to suffer from the same undersized condition. Prior to discovery of the undersized gaskets, the maintenance plan allowed for prompt system restoration in the event of an emergency.</br>The current lack of a suitable replacement gasket has resulted in a condition which represents a major loss of emergency preparedness capability per 10 CFR 50.72(b)(3)(xiii) in that TSC habitability might not be sustainable during certain events due to the inability of the filtration system to maintain a habitable atmosphere. Station procedures provide instructions to relocate the TSC if monitoring during an emergency event indicates that habitability cannot be maintained. Compensatory measures are being developed (while the restoration work is ongoing) to heighten awareness of responsible TSC staff following ERO activation to monitor TSC habitability in accordance with procedures and to consider potential TSC relocation as necessary as described in the station emergency plan.</br>Work is underway to return the TSC filtration system to functional status with a high priority.</br>The licensee has notified the NRC Resident Inspector.</br>* * * UPDATE FROM MICHAEL STODICK TO HOWIE CROUCH AT 2039 EST ON 11/12/11 * * *</br>Maintenance work on the TSC emergency filtration system has been completed. A post functional test has been performed and it has been evaluated that the TSC emergency filtration system's function has been restored as of 1718 PST on 11/12/2011. The NRC Resident Inspector will be notified.</br>Notified R4DO (Hay).tor will be notified.
Notified R4DO (Hay). +
22:39:00, 10 November 2011 +
47,429 +
21:54:00, 10 November 2011 +
22:39:00, 10 November 2011 +
At 1439 PST on 11-10-2011, while performin … At 1439 PST on 11-10-2011, while performing maintenance on the Technical Support Center (TSC) emergency filtration system, it was discovered that replacement gaskets required to restore the system were undersized and that the system could not be restored. Specifically the replacement gaskets were determined to be too small. All spare gaskets onsite were examined and determined to suffer from the same undersized condition. Prior to discovery of the undersized gaskets, the maintenance plan allowed for prompt system restoration in the event of an emergency.</br>The current lack of a suitable replacement gasket has resulted in a condition which represents a major loss of emergency preparedness capability per 10 CFR 50.72(b)(3)(xiii) in that TSC habitability might not be sustainable during certain events due to the inability of the filtration system to maintain a habitable atmosphere. Station procedures provide instructions to relocate the TSC if monitoring during an emergency event indicates that habitability cannot be maintained. Compensatory measures are being developed (while the restoration work is ongoing) to heighten awareness of responsible TSC staff following ERO activation to monitor TSC habitability in accordance with procedures and to consider potential TSC relocation as necessary as described in the station emergency plan.</br>Work is underway to return the TSC filtration system to functional status with a high priority.</br>The licensee has notified the NRC Resident Inspector.</br>* * * UPDATE FROM MICHAEL STODICK TO HOWIE CROUCH AT 2039 EST ON 11/12/11 * * *</br>Maintenance work on the TSC emergency filtration system has been completed. A post functional test has been performed and it has been evaluated that the TSC emergency filtration system's function has been restored as of 1718 PST on 11/12/2011. The NRC Resident Inspector will be notified.</br>Notified R4DO (Hay).tor will be notified.
Notified R4DO (Hay). +
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