ENS 46661: Difference between revisions
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| event date = 03/07/2011 01:40 CST | | event date = 03/07/2011 01:40 CST | ||
| last update date = 03/09/2011 | | last update date = 03/09/2011 | ||
| title = Inadvertant Auto-Start Signal | | title = Inadvertant Auto-Start Signal to the 1B Diesel Generator During Testing | ||
| event text = 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. | | event text = 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. | 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. | ||
Latest revision as of 21:07, 1 March 2018
| Where | |
|---|---|
Farley  Alabama (NRC Region 2) | |
| Reporting | |
| 10 CFR 50.72(b)(3)(iv)(A), System Actuation | |
| Time - Person (Reporting Time:+2.85 h0.119 days <br />0.017 weeks <br />0.0039 months <br />) | |
| Opened: | Alton Deweese 10:31 Mar 7, 2011 |
| NRC Officer: | John Shoemaker |
| Last Updated: | Mar 9, 2011 |
| 46661 - NRC Website
| |