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| Entered date | Event description | |
|---|---|---|
| ENS 50361 | 13 August 2014 13:06:00 | On August 13, 2014 at 1157 EDT, the Indian Point Unit 3 Reactor Protection System automatically actuated at 100% power due to Over Temperature Delta Temperature logic. At the time of the trip, pressurizer pressure Channel 1 was in test for maintenance, though testing was suspended at this time for lunch. All control rods fully inserted on the reactor trip. All plant equipment responded normally to the unit trip. This is reportable under 10 CFR 50.72(b)(2)(iv)(B). The plant is stable in Mode 3 at this time. The Auxiliary Feedwater System actuated following the automatic trip as expected. This is reportable under 10 CFR 50.72(b)(3)(iv)(A). The Emergency Diesel Generators did not start as offsite power remained available and stable. The unit remains on offsite power and all electrical loads are stable. No primary or secondary relief valves lifted. The plant is in Hot Standby at normal operating temperature and pressure with decay heat removal using auxiliary feedwater to the steam generators, and normal heat removal through the condenser via condenser steam dumps. There was no radiation released. Indian Point Unit 2 was not affected by this event and remains at 100% power. A post trip investigation is in progress. The licensee notified the NRC Resident Inspector. |
| ENS 48454 | 30 October 2012 00:30:00 | On October 29, 2012, at 2241EDT, the Reactor Protection System automatically actuated at 100% reactor power due to a direct electrical trip to the Unit 3 Main Turbine Generator. The generator trip resulted in a turbine/reactor trip. All control rods fully inserted on the reactor trip. All plant equipment responded normally to the unit trip. This is reportable under 10 CFR 50.72(b)(2)(iv)(B). The plant is stable in Mode 3 at this time. The Auxiliary Feedwater System actuated following the automatic trip as expected. This is reportable under 10 CFR 50.72(b)(3)(iv)(A). The Emergency Diesel Generators did not start as offsite power remained available and stable. The unit remains on offsite power and all electrical loads are stable. No primary or secondary relief valves lifted. The plant is in Hot Standby at normal operating temperature and pressure with decay heat removal using auxiliary feedwater to the steam generators and normal heat removal through the condenser via condenser steam dumps. There was no radiation released. Indian Point Unit 2 was not affected by this event and remains at 100% power. A post trip investigation is in progress. The licensee notified the NRC Resident Inspector. |
| ENS 47715 | 3 March 2012 13:45:00 | Indian Point Unit 3 is at 100% power. At approximately 0958 EST on 3/3/2012, an oil sheen was observed in the discharge canal and Hudson River. The size of sheen in river was about 10 square feet and the source of the sheen is not known at this time. Oil is suspected, but not yet confirmed. There is no adverse impact on the plant. All required notifications have been made, including the New York State Department of Environmental Conservation, Westchester County Department of Health, and the U.S. Coast Guard National Response Center. The licensee has notified the NRC Resident Inspector. |