| U.S. Nuclear Regulatory Commission
Operations Center Event Reports For
03/09/2011 - 03/10/2011 ** EVENT NUMBERS ** |
 | !!!!! THIS EVENT HAS BEEN RETRACTED. THIS EVENT HAS BEEN RETRACTED !!!!! | | Power Reactor | Event Number: 46661 | Facility: FARLEY
Region: 2 State: AL
Unit: [1] [ ] [ ]
RX Type: [1] W-3-LP,[2] W-3-LP
NRC Notified By: ALTON DEWEESE
HQ OPS Officer: JOHN SHOEMAKER | Notification Date: 03/07/2011
Notification Time: 10:31 [ET]
Event Date: 03/07/2011
Event Time: 01:40 [CST]
Last Update Date: 03/09/2011 | Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(iv)(A) - VALID SPECIF SYS ACTUATION
| Person (Organization):
MALCOLM WIDMANN (R2DO)
|
| Unit | SCRAM Code | RX CRIT | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode | | 1 | N | Y | 100 | Power Operation | 100 | Power Operation | Event Text INADVERTANT AUTO-START SIGNAL TO THE 1B DIESEL GENERATOR DURING TESTING
"Farley Unit One was conducting FNP-1-STP-80.8, [test procedure for] 1B DG [Diesel Generator] 1000 KW load rejection. After successfully completing the load rejection portion of the procedure, the control room staff was restoring the 1B diesel to a normal auto start alignment. With the 1B diesel running, the plant operator was required to reset the 1B DG loading sequencer. He incorrectly pressed the Emergency Start reset push-button instead of the Sequencer reset push-button. As a result, the Emergency Diesel generator stop light illuminated for a brief few seconds and then extinguished. Subsequently due to the test configuration, the 1B diesel received an auto-start signal and returned to the running condition prior to the Emergency Start reset. Although further investigation is continuing, this report is being made due to an apparent valid actuation of ESF equipment."
This event had no impact on other equipment or the plant electrical alignment. The Sequencer reset push-button and the Emergency Start reset push-button are not in close proximity to each other. The plant operator was assessed for fatigue and it was determined that fatigue was not a factor. The plant operator was removed from duties pending remedial training and assessment.
The licensee has notified the NRC Resident Inspector.
* * * RETRACTION FROM STEVE GATES TO JOE O'HARA AT 1342 ON 03/09/11 * * *
"The 8-hour non-emergency report (EN #46661) per 10CFR50.72(b)(3)(iv)(A) was conservatively reported based on the potential for a valid actuation of an Emergency Diesel Generator (EDG) during a 1000 KW load rejection surveillance test.
"During the restoration phase of the load rejection test to align the 1B EDG to a normal shutdown configuration, a plant operator incorrectly pressed the Emergency Start Reset (ESR) push-button instead of the Sequencer Reset push-button. As a result, the 1B EDG stop light illuminated momentarily and then extinguished. The 1B EDG received a momentary shutdown signal, but remained in a running condition.
"Upon completion of the 1B EDG circuit analysis, It was determined that the 1B EDG did not receive a valid actuation of the EDG safety function. Depressing the ESR push-button caused the emergency start relays to deenergize and remain de-energized. The emergency start relays energize on receipt of valid signals in response to actual plant conditions or parameters satisfying the requirements for the initiation of the safety function of the EDG. Therefore per section 3.2.6 of NUREG-1022, the 1B EDG did not receive a valid actuation signal."
The NRC Resident Inspector has been notified.
Notified R2DO(Musser) |
| Power Reactor | Event Number: 46664 | Facility: MCGUIRE
Region: 2 State: NC
Unit: [1] [2] [ ]
RX Type: [1] W-4-LP,[2] W-4-LP
NRC Notified By: MARK MCNEELY
HQ OPS Officer: JOHN SHOEMAKER | Notification Date: 03/09/2011
Notification Time: 11:20 [ET]
Event Date: 03/09/2011
Event Time: 10:55 [EST]
Last Update Date: 03/09/2011 | Emergency Class: NON EMERGENCY
10 CFR Section:
26.719 - FITNESS FOR DUTY
| Person (Organization):
RANDY MUSSER (R2DO)
|
| Unit | SCRAM Code | RX CRIT | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode | | 1 | N | Y | 100 | Power Operation | 100 | Power Operation | | 2 | N | N | 0 | Refueling | 0 | Refueling | Event Text FITNESS FOR DUTY
A non-licensed employee failed to meet fitness-for-duty criteria. The employee's access to the plant has been terminated. Contact the NRC Headquarters Operations Officer for additional details. | |