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Event Notification Report for March 10, 2011

U.S. Nuclear Regulatory Commission
Operations Center

Event Reports For
03/09/2011 - 03/10/2011

** EVENT NUMBERS **


46661 46664

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!!!!! THIS EVENT HAS BEEN RETRACTED. THIS EVENT HAS BEEN RETRACTED !!!!!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)

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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.

Page Last Reviewed/Updated Thursday, March 29, 2012
Thursday, March 29, 2012