ENS 41428: Difference between revisions
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StriderTol (talk | contribs) (Created page by program invented by StriderTol) |
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| event date = 02/22/2005 03:08 EST | | event date = 02/22/2005 03:08 EST | ||
| last update date = 02/22/2005 | | last update date = 02/22/2005 | ||
| title = Emergency Diesel Generator | | title = Emergency Diesel Generator and Emergency Feedwater Auto Start on Vital Bus Failure to Transfer | ||
| event text = To support routine preventative maintenance on the 4160V Unit Auxiliary Transformer breaker, 4160V Vital Bus 5 did not successfully transfer to the Reserve Auxiliary Transformer. Bus 5 momentarily de-energized and the Emergency Diesel Generator started and loaded as expected supplying Bus 5. The Emergency Feedwater System actuated as expected on momentary undervoltage to Bus 5. The plant remains stable at 100% power. A station troubleshooting team has been established. | | event text = To support routine preventative maintenance on the 4160V Unit Auxiliary Transformer breaker, 4160V Vital Bus 5 did not successfully transfer to the Reserve Auxiliary Transformer. Bus 5 momentarily de-energized and the Emergency Diesel Generator started and loaded as expected supplying Bus 5. The Emergency Feedwater System actuated as expected on momentary undervoltage to Bus 5. The plant remains stable at 100% power. A station troubleshooting team has been established. | ||
The reason that Bus 5 did not transfer to the Reserve Auxiliary Transformer is not known at this time. | The reason that Bus 5 did not transfer to the Reserve Auxiliary Transformer is not known at this time. | ||
Latest revision as of 21:21, 1 March 2018
| Where | |
|---|---|
Seabrook  New Hampshire (NRC Region 1) | |
| Reporting | |
| 10 CFR 50.72(b)(3)(iv)(A), System Actuation | |
| Time - Person (Reporting Time:+-1.8 h-0.075 days <br />-0.0107 weeks <br />-0.00247 months <br />) | |
| Opened: | Mike Taylor 06:20 Feb 22, 2005 |
| NRC Officer: | Mike Ripley |
| Last Updated: | Feb 22, 2005 |
| 41428 - NRC Website
| |