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| Entered date | Event description | |
|---|---|---|
| ENS 46745 | 10 April 2011 10:42:00 | Report has been made to the New York State Department of Environmental Conservation and the Westchester County Department of Health related to a visible oil sheen identified on the discharge canal. NRC report required per 10CFR50.72(b)(2)(xi) due to notification of other government agencies." Initially, the National Response Center was not notified as it does not appear that the oil had reached the Hudson River from this occurrence. After further discussion with the Indian Point Environmental Supervisor, the National Response Center and the Coast Guard were notified concerning this event. The licensee will notify the NRC Resident Inspector. |
| ENS 46392 | 4 November 2010 03:05:00 | On November 4, 2010 at 0123 (EDT), '23' Charging Pump was declared inoperable due to not meeting required test parameters during surveillance testing. '23' Charging Pump is required for remote shutdown per Technical Specification 3.3.4, Remote Shutdown, and is a single component system intended to perform the inventory control safety function. Since '23' Charging Pump has been declared inoperable, a loss of safely function has occurred and is reportable per 10CFR50.72 (b)(3)(v)(A). The cause of the inoperability is under investigation. Per Technical Specification 3.3.4, Remote Shutdown, '23' Charging Pump must be restored to operable status within 30 days. The licensee will inform the NY State PSC (Public Service Commission) and the NRC Resident Inspector.
Indian Point Unit 2 is withdrawing the 8-hour non-emergency notification made on November 4, 2010, at 0305 EST. The notification on November 4, 2010, reported a safety system functional failure (SSFF) as a result of declaring the 23 Charging Pump (CP) inoperable. The 23 CP failed to meet test parameters during testing. Because the 23 CP is credited in Technical Specification (TS) 3.3.4 for Remote Shutdown, the inoperable condition was determined to be a loss of safety function. The TS 3.3.4 Allowed Outage Time (AOT) for inoperable conditions is 30 days. The remote shutdown function is not credited in the accident analysis. Subsequent investigations determined that during a two year comprehensive test (IST) the 23 CP failed the flow test due to low pump discharge flow (79.3 gpm) at the prescribed test speed (85% of rated speed). Troubleshooting determined that the 23 CP recirculation line valves 1279 and 4902 had leak-by of approximately 6.7 gpm. The leak-by results in a reduction of available discharge flow from the 23 CP to the Reactor Coolant System (RCS) due to a small amount of the pump discharge being diverted through the recirculation line. Engineering determined that the CP capacity for emergency boration with the recirculation line valves leak-by was within the capability of the 23 CP to maintain overall system function. The 23 CP is also credited for RCS inventory maintenance per TS 3.3.4 and Station Administrative Order (SAO) 703 for fire protection. Engineering concluded that with a normal CP output of approximately 87-90 gpm and a nominal rated capacity of 98 gpm, the reduction by approximately 6.7 gpm due to leak-by did not significantly impact normal operation of the CP. Therefore, the 23 CP continues to meet the established IST requirement when the 6.7 gpm recirculation line valve leak-by is accounted for. The degraded output is associated with the system rather than the 23 CP therefore the IST requirement for the 23 CP is satisfied. Additionally, the 23 CP test was performed at approximately 85% of rated speed in accordance with the IST requirements. At 100% rated speed, the remaining available capability to the RCS would be approximately 92 gpm. Engineering concludes that although degraded the 23 CP and system can perform their intended function and no SSFF occurred." The licensee will notify the NRC Resident Inspector. The R1DO (Perry) was notified. |
| ENS 41046 | 17 September 2004 00:37:00 | The following was received from the licensee via facsimile: Indian Point Unit 2 synchronized to the grid at 2318 on September 16, 2004. NRC notification required per Item 44 of IP-SMM-LI-108, Event Notification and Reporting, due to notification of other government agencies of Indian Point Unit 2 synchronizing to the grid. This is a 4-hour non-emergency event notification per 10 CFR 50.72 (b)(2)(xi). The licensee will notify the NRC Resident Inspector. |