Event Notification Report for March 11, 2013
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
03/10/2013 - 03/11/2013
EVENT NUMBERS
49017
Power Reactor
Event Number: 49017
Facility: TURKEY POINT
Region: 2 State: FL
Unit: [3] [] []
RX Type: [3] W-3-LP,[4] W-3-LP
NRC Notified By: PAUL CZAYA
HQ OPS Officer: JOHN SHOEMAKER
Region: 2 State: FL
Unit: [3] [] []
RX Type: [3] W-3-LP,[4] W-3-LP
NRC Notified By: PAUL CZAYA
HQ OPS Officer: JOHN SHOEMAKER
Notification Date: 05/09/2013
Notification Time: 16:10 [ET]
Event Date: 03/11/2013
Event Time: 00:43 [EDT]
Last Update Date: 05/09/2013
Notification Time: 16:10 [ET]
Event Date: 03/11/2013
Event Time: 00:43 [EDT]
Last Update Date: 05/09/2013
Emergency Class: NON EMERGENCY
10 CFR Section:
50.73(a)(1) - INVALID SPECIF SYSTEM ACTUATION
10 CFR Section:
50.73(a)(1) - INVALID SPECIF SYSTEM ACTUATION
Person (Organization):
DAVID AYRES (R2DO)
DAVID AYRES (R2DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 3 | N | Y | 3 | Startup | 3 | Startup |
INVALID ACTUATION OF THE AUXILIARY FEEDWATER SYSTEM
"This 60-day telephone notification is provided in accordance with 10 CFR 50.73(a)(1) to report an invalid actuation of the Unit 3 Auxiliary Feedwater (AFW) System reportable in accordance with 10 CFR 50.73(a)(2)(iv)(A).
"On March 11,2013 at approximately 0043 [EDT], while starting the 3B Steam Generator Feed Pump (SGFP) for a one minute run, both trains of AFW started. Operators then manually closed the AFW flow control valves. AFW Trains 2 and 1 were restored to operable standby status at approximately 0112 [EDT] and 0117 [EDT], respectively.
"AFW actuation occurred because of a misunderstood procedure step and unnecessarily placed jumpers in AFW actuation logic in preparation for start of the 3B SGFP, which resulted in the invalid signal. At the time, the level in the steam generators was being maintained by the 3A Standby Steam Generator Feed Pump (SBSGFP).
"Because no actual loss of normal feedwater condition existed (with the 3A SBSGFP in service) which required AFW to start, and the start was not in response to actual plant conditions satisfying the requirements for actuation, this event is an invalid actuation."
The licensee will notify the NRC Resident Inspector.
"This 60-day telephone notification is provided in accordance with 10 CFR 50.73(a)(1) to report an invalid actuation of the Unit 3 Auxiliary Feedwater (AFW) System reportable in accordance with 10 CFR 50.73(a)(2)(iv)(A).
"On March 11,2013 at approximately 0043 [EDT], while starting the 3B Steam Generator Feed Pump (SGFP) for a one minute run, both trains of AFW started. Operators then manually closed the AFW flow control valves. AFW Trains 2 and 1 were restored to operable standby status at approximately 0112 [EDT] and 0117 [EDT], respectively.
"AFW actuation occurred because of a misunderstood procedure step and unnecessarily placed jumpers in AFW actuation logic in preparation for start of the 3B SGFP, which resulted in the invalid signal. At the time, the level in the steam generators was being maintained by the 3A Standby Steam Generator Feed Pump (SBSGFP).
"Because no actual loss of normal feedwater condition existed (with the 3A SBSGFP in service) which required AFW to start, and the start was not in response to actual plant conditions satisfying the requirements for actuation, this event is an invalid actuation."
The licensee will notify the NRC Resident Inspector.