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Entered date | Event description | |
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ENS 49188 | 14 July 2013 16:29:00 | At 1600 CDT on Sunday, July 14, 2013, the Dresden Nuclear Power Station (DNPS) Technical Support Center (TSC) emergency ventilation system will be removed from service for planned preventative maintenance activities on the TSC air handling unit and air compressor units. During the maintenance, the TSC ventilation will be shut down. The TSC air filtration fan and dampers will be non-functional, rendering the TSC HVAC accident mode non-functional. This maintenance is scheduled to minimize out of service time. The planned TSC ventilation outage is scheduled to be completed within 48 hours. Contingency plans are in place so that if an emergency is declared requiring TSC activation during this period, the TSC will be staffed and activated using existing EP (Emergency Preparedness) procedures and checklists. If radiological or environmental conditions require TSC facility evacuation during ventilation system restoration, the Station Emergency Director will evacuate and relocate the TSC staff in accordance with station procedures. The NRC Resident Inspector has been notified.
The planned TSC ventilation outage, for maintenance activities on the TSC air handling unit and air compressor units, has been extended and is now scheduled to complete on Saturday, July 20, 2013. During this maintenance, the TSC air filtration fan and dampers will continue to be non-functional. The licensee has notified the NRC Resident Inspector. R3DO (Hills) has been notified.
At 1135 CDT on July 19, 2013, Dresden TSC ventilation was restored. The Dresden TSC ventilation is functional at this time. The NRC Resident Inspector has been notified. Notified R3DO (Hills). |