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The following information was provided by … The following information was provided by the licensee email:</br>On June 27, 2024, at 0804 (EDT), D.C. Cook Unit 2 had an automatic start of the turbine driven auxiliary feedwater pump (TDAFP) following a controlled down power and manual reactor trip at approximately 17 percent power. The automatic start of the TDAFP was due to a steam generator water level 'low low' signal following the reactor trip. The down power and trip were performed in accordance with normal shutdown procedures to comply with the required action C.1 of technical specification 3.4.13, 'reactor coolant system operational leakage.' Reference event notification number EN57194.</br>An automatic start of the TDAFP is an eight hour report per 10CFR 50.72(b)(3)(iv)(A).</br>Unit 2 is being supplied by offsite power. All control rods fully inserted. Steam generators are being fed by both motor driven auxiliary feedwater pumps. Decay heat is being removed via the steam dump system to the main condenser. Preliminary evaluation indicates plant systems functioned normally following the reactor trip. D.C. Cook Unit 2 remains in Mode 3 to repair the previously reported reactor coolant system leakage through valve 2-QRV-251, 'CVCS (chemical and volume control system) charging pumps discharge flow control' valve packing.</br>The NRC Resident Inspector has been notified. NRC Resident Inspector has been notified. +
12:04:00, 27 June 2024 +
14:03:00, 27 June 2024 +
12:04:00, 27 June 2024 +
The following information was provided by … The following information was provided by the licensee email:</br>On June 27, 2024, at 0804 (EDT), D.C. Cook Unit 2 had an automatic start of the turbine driven auxiliary feedwater pump (TDAFP) following a controlled down power and manual reactor trip at approximately 17 percent power. The automatic start of the TDAFP was due to a steam generator water level 'low low' signal following the reactor trip. The down power and trip were performed in accordance with normal shutdown procedures to comply with the required action C.1 of technical specification 3.4.13, 'reactor coolant system operational leakage.' Reference event notification number EN57194.</br>An automatic start of the TDAFP is an eight hour report per 10CFR 50.72(b)(3)(iv)(A).</br>Unit 2 is being supplied by offsite power. All control rods fully inserted. Steam generators are being fed by both motor driven auxiliary feedwater pumps. Decay heat is being removed via the steam dump system to the main condenser. Preliminary evaluation indicates plant systems functioned normally following the reactor trip. D.C. Cook Unit 2 remains in Mode 3 to repair the previously reported reactor coolant system leakage through valve 2-QRV-251, 'CVCS (chemical and volume control system) charging pumps discharge flow control' valve packing.</br>The NRC Resident Inspector has been notified. NRC Resident Inspector has been notified. +
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00:00:00, 28 June 2024 +
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12:04:00, 27 June 2024 +
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