Emergency Feedwater Actuation System (EFAS) is for Emergency Feedwater System.
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| | Site | Start date | Title | Description |
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| 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 | | | IR 05000382/2021002 | Waterford | 5 August 2021 | Integrated Inspection Report 05000382/2021002 | | | 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 | | | DCL-18-070, Technical Specification Bases, Revision 11 | Diablo Canyon | 11 September 2018 | Technical Specification Bases, Revision 11 | | | 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 | | | SBK-L-17185, License Amendment Request 17-04: Remove Limitation to Perform Certain Surveillance Requirements During Shutdown and Changes to Administrative Technical Specifications | Seabrook | 1 December 2017 | License Amendment Request 17-04: Remove Limitation to Perform Certain Surveillance Requirements During Shutdown and Changes to Administrative Technical Specifications | | | ML17080A187 | Arkansas Nuclear | 22 February 2017 | 2017-02 Draft Written Examination | | | IR 05000382/2016004 | Waterford | 20 January 2017 | NRC Integrated Inspection Report 05000382/2016004 and 0720075/2016001 | |
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