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| Entered date | Event description | |
|---|---|---|
| ENS 50720 | 7 January 2015 12:27:00 | This 60-day telephone notification is being made under the reporting requirements specified by 10 CFR 50.73(a)(2)(iv)(A) and 10 CFR 50.73(a)(1) to describe an invalid actuation of the 1A EDG. The 1A EDG start resulted from a degraded component during the testing of the 1A Emergency Load Sequencer. At 2355 (EST) on November 15, 2014, the 1A EDG auto started during performance of the monthly 1A Emergency Load Sequencer test. The test was terminated by personnel prior to a full actuation of the Emergency Load Sequencer due to the unexpected response of the sequencer. The 1A EDG started and functioned normally. Troubleshooting identified a degraded relay downstream of the under voltage sensing circuit which made up the invalid 2/3 logic necessary to start the EDG. There were NO actual plant conditions or parameters (i.e. under voltage, degraded voltage, safety injection or manual initiation) involved in this actuation. The degraded relay would NOT have prevented the 1A Emergency Load Sequencer or the EDG from performing their safety related functions. Following troubleshooting, replacement of the relay and an evaluation for extent of condition, the 1A Emergency Load Sequencer and EDG were returned to service. The health and safety of the public was not affected by this issue. The NRC Resident Inspector has been notified. |
| ENS 50062 | 27 April 2014 17:44:00 | The Technical Support Center (TSC) cooling system is not operating properly. The temperature of the TSC is currently 80 degrees F. The TSC is still capable of being pressurized. If needed, facilities in the Admin building are available for use as the back-up TSC. The licensee will notify the NRC Resident Inspector.
TSC Ventilation (VH) System is out-of-service. TSC is not capable of being pressurized, filtered or cooled. This is planned maintenance for work to repair leak reported on 04/27/14. The licensee informed the NRC Resident Inspector. Notified R2DO (King). |