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At time 1136 CDT, 5/31/14 Cooper Nuclear Station was informed by the National Weather Service that the Shubert radio transmission tower was not functioning. This affects the tone alert radios used to notify the public in the event of an emergency condition. This is considered to be a major loss of the Public Prompt Notification System capability and is reportable under 10CFR50.72(b)(3)(xiii). Nemaha, Richardson and Atchison county authorities within the 10 mile EPZ have been notified of the condition and the affect on the tone alert radios and will utilize Local Route Notification (backup notification method). Estimated return to service time is unknown. The cause of the failure is a severed communication line. The licensee also found FTS 2001 lines to be non-functional. The communications line was severed during road construction. The licensee notified the NRC Resident Inspector.

• * * UPDATE AT 1530 EDT ON 6/1/2014 FROM KYLE SAYLOR TO MARK ABRAMOVITZ * * *

At 2232 CDT on 5/31/2014, the licensee was notified that the tone alert system had been returned to service. At 1230 CDT on 6/1/2014, the FTS 2001 phone system testing was completed verifying the normal status of these phones. The licensee will notify the NRC Resident Inspector. Notified the R4DO (Vasquez).