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On July 13, 2015, planned activities will be performed to upgrade the Vogtle Electric Generating Plant Meteorological Towers and its communication equipment. The emergency response data system will be affected. The work will be completed within approximately 5 days. This activity requires the meteorological tower to be out of service greater than 72 hours rendering equipment used for emergency assessment non-functional. The TSC and EOF remain functional during the outage. Compensatory measures exist within emergency plan implementing procedures to obtain meteorological tower data via Savannah River Site and with the National Weather Service. Meteorological information will be relayed via the emergency notification system to the NRC Operations Center. This event is reportable per 10 CFR 50.72(b)(3)(xiii) for 'any event that results in a major loss of emergency assessment capability.' The Emergency Response Organization has been notified of the upgrade and necessary compensatory actions. The NRC Resident Inspector has been notified.

• * * UPDATE FROM DANIEL MONAHON TO DONALD NORWOOD AT 2013 EDT ON 7/18/2015 * * *

Vogtle primary and backup Meteorological Towers have been returned to service and functionality of equipment has been restored. The NRC Resident Inspector will be notified. Notified R2DO (King).