Emergency Feedwater Actuation System (EFAS) is for Emergency Feedwater System.
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| | Site | Start date | Title | Description |
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| IR 05000382/2025002 | Waterford | 6 August 2025 | Integrated Inspection Report 05000382/2025002 | | | 2CAN122402, Status of Actions to Return Arkansas Nuclear One, Unit 2 to Compliance | Arkansas Nuclear | 4 December 2024 | Status of Actions to Return Arkansas Nuclear One, Unit 2 to Compliance | | | ENS 57122 | Waterford | 11 May 2024 21:55:00 | Actuation of Reactor Protection System and Emergency Feedwater System | The following information was provided by the licensee via phone and email:
At 1655 CDT, Waterford Steam Electric Station, Unit 3 was in Mode 3 with all control rod element assemblies (CEA) fully inserted with reactor trip circuit breakers closed and individual CEA disconnects open for plant startup. During the performance of emergency feedwater surveillance testing, reactor protection system (RPS) trip set point and emergency feedwater actuation system (EFAS) initiation set point for steam generator level low was exceeded for steam generator 1.
Preliminary evaluation indicates that all plant systems functioned normally. The unit is currently stable in Mode 3. All control rods remain fully inserted.
This event is being reported as a eight-hour non-emergency notification in accordance with 10 CFR 50.72(b)(3)(iv)(A) as valid actuation of the RPS and emergency feedwater systems. The NRC Resident Inspector has been notified. | | ML24017A298 | Arkansas Nuclear | 18 April 2024 | Summary of Regulatory Audit Regarding the License Amendment Request to Revise Technical Specifications to Adopt TSTF 505, Revision 2, Provide Risk-Informed Extended Completion Times RITSTF Initiative 4b | | | 2CAN092301, Reply to a Notice of Violation | Arkansas Nuclear | 8 September 2023 | Reply to a Notice of Violation | | | ML22083A063 | Waterford | 9 March 2022 | Wat 2022-02 Draft Written Exam | | | IR 05000382/2021002 | Waterford | 5 August 2021 | Integrated Inspection Report 05000382/2021002 | | | ML19011A212 | San Onofre | 6 December 2018 | To Defueled Safety Analysis Report, Chapter 7, Instrumentation and Controls | | | ML18247A538 | Seabrook | 27 November 2018 | Issuance of Amendment No. 158 Removing Requirement to Perform Certain Surveillance Requirements During Shutdown and Changes to Administrative Technical Specifications | | | IR 05000382/2018007 | Waterford | 7 September 2018 | NRC Triennial Fire Protection Inspection Report 05000382/2018007 and Confirmatory Order (EA-15-100) Follow-Up Inspection Report | |
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