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| Entered date | Event description | |
|---|---|---|
| ENS 52133 | 29 July 2016 06:51:00 | On 7/28/2016 at 2357 EDT, Nine Mile Point Nuclear Station Unit 1 experienced a fault in the in-service 11 RPS UPS (Reactor Protective System Ultimate Power Supply), resulting in an isolation of both emergency condensers. Emergency condenser 12 was returned to standby on 7/29/2016 at 0041 EDT and emergency condenser 11 was returned to standby on 7/29/2016 at 0045 EDT. This 8-hour non-emergency report is being made based upon requirements of 10CFR50.72(b)(3)(v)(B) which states, 'Licensee shall notify the NRC of any event or condition that at the time of discovery could have prevented the fulfillment of the safety function of structures or systems that are needed to: (B) Remove residual heat.' The state of New York and the NRC Senior Resident Inspector were informed. |
| ENS 49795 | 5 February 2014 15:28:00 | On Wednesday, February 5, 2014, at 1130 EST, Oswego County notified Nine Mile Point (NMP) of a loss of the tone alert system at approximately 1000. The loss of the tone alert was identified by the National Weather Service - Binghamton forecast office when it was determined that the phone line to the site was out of service. Site Emergency Procedures define a loss of the tone alert system for greater than one hour as a significant loss of emergency communications. This impacts the ability to readily notify a portion of the Emergency Planning Zone (EPZ) population for the NMP and JAF (James A. FitzPatrick) nuclear power plants. This failure meets NRC 8-Hour reporting criteria 10 CFR 50.72(b)(3)(xiii). Compensatory measures were verified to be available should the Prompt Notification System be needed. This consists of utilizing the hyper-reach system, which is a reverse 911 feature available from the county 911 center. The county alert sirens, which also function as part of the public prompt notification system, remain operable. At 1328 on February 5, 2014, Nine Mile Point was notified by Oswego County that the tone alert system was returned to service, effective as of 1325. The licensee informed the NRC Resident Inspector and the State of New York. |