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The Turbine Driven Auxiliary/Emergency Fee … The Turbine Driven Auxiliary/Emergency Feedwater pump auto started when power was lost to the steam admittance solenoid valves. Additional feedwater to the steam generators caused an increase in power; in response, turbine load was manually decreased. At no time were any power limits exceeded. Power level is currently at 87% and stable.</br>Maximum power, as determined by core delta temperatures, did not exceed 100%. </br>The licensee has notified the NRC Resident Inspector.</br>* * * UPDATED AT 1048 EST ON 02/26/09 FROM JOEL HOWARD TO S. SANDIN * * *</br>Event Report 44869 Retraction:</br>On February 23, 2009, McGuire Nuclear Station notified the NRC of an inadvertent actuation of the Unit 1 Turbine Driven Auxiliary/Emergency Feedwater (TDAFW) Pump (reference Event Report 44869). This event occurred when power was removed to the steam admittance solenoid valves for the Unit 1 TDAFW Pump prior to isolating the steam supply to the pump. Removing power to the steam admittance valves caused them to fail open, starting the pump. As per the requirements of 10 CFR 50.72(b)(3)(iv)(A), this event was reported as a valid actuation of the Unit 1 TDAFW Pump.</br>Further evaluation of the event concluded that the actuation of the Unit 1 TDAFW Pump was not the result of a valid signal initiated in response to actual plant conditions or parameters satisfying the requirements for initiation of the safety function provided by the pump. In addition, the actuation of the Unit 1 TDAFW Pump was not the result of an intentional manual initiation. Therefore, actuation of the Unit 1 TDAFW Pump represented an invalid actuation which is not reportable per the requirements of 10 CFR 50.72(b)(3)(iv)(A). Therefore, McGuire is retracting Event Report 44869. Note that McGuire will report this event in accordance with the requirements of 10 CFR 50.73.</br>The licensee has notified the Resident Inspector.</br>Notified R2DO (Musser).esident Inspector.
Notified R2DO (Musser). +
09:06:00, 23 February 2009 +
05:46:00, 23 February 2009 +
09:06:00, 23 February 2009 +
The Turbine Driven Auxiliary/Emergency Fee … The Turbine Driven Auxiliary/Emergency Feedwater pump auto started when power was lost to the steam admittance solenoid valves. Additional feedwater to the steam generators caused an increase in power; in response, turbine load was manually decreased. At no time were any power limits exceeded. Power level is currently at 87% and stable.</br>Maximum power, as determined by core delta temperatures, did not exceed 100%. </br>The licensee has notified the NRC Resident Inspector.</br>* * * UPDATED AT 1048 EST ON 02/26/09 FROM JOEL HOWARD TO S. SANDIN * * *</br>Event Report 44869 Retraction:</br>On February 23, 2009, McGuire Nuclear Station notified the NRC of an inadvertent actuation of the Unit 1 Turbine Driven Auxiliary/Emergency Feedwater (TDAFW) Pump (reference Event Report 44869). This event occurred when power was removed to the steam admittance solenoid valves for the Unit 1 TDAFW Pump prior to isolating the steam supply to the pump. Removing power to the steam admittance valves caused them to fail open, starting the pump. As per the requirements of 10 CFR 50.72(b)(3)(iv)(A), this event was reported as a valid actuation of the Unit 1 TDAFW Pump.</br>Further evaluation of the event concluded that the actuation of the Unit 1 TDAFW Pump was not the result of a valid signal initiated in response to actual plant conditions or parameters satisfying the requirements for initiation of the safety function provided by the pump. In addition, the actuation of the Unit 1 TDAFW Pump was not the result of an intentional manual initiation. Therefore, actuation of the Unit 1 TDAFW Pump represented an invalid actuation which is not reportable per the requirements of 10 CFR 50.72(b)(3)(iv)(A). Therefore, McGuire is retracting Event Report 44869. Note that McGuire will report this event in accordance with the requirements of 10 CFR 50.73.</br>The licensee has notified the Resident Inspector.</br>Notified R2DO (Musser).esident Inspector.
Notified R2DO (Musser). +
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00:00:00, 26 February 2009 +
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