ENS 54639
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ENS Event | |
|---|---|
06:15 Apr 4, 2020 | |
| Title | Automatic Reactor Trip |
| Event Description | At 0114 [CDT] on April 04, 2020 the plant was in Mode 1 at 100 percent power when a Digital Feedwater Trouble alarm was received unexpectedly. Operators identified a full feedwater demand signal and lowering level in the 'C' Steam Generator. At 0115 a Reactor Trip signal for Low Steam Generator Level was received. All systems responded as expected. A Feedwater Isolation signal was received due to the reactor trip with RCS average temperature less than 564 degrees Fahrenheit. Auxiliary Feedwater started on a valid actuation signal to restore and maintain Steam Generator levels. The Plant is being maintained stable in Mode 3 with no complications.
The NRC Resident Inspector has been notified of the Reactor Trip. All control rods fully inserted from the reactor trip signal, and decay heat is being removed via the Auxiliary Feedwater and Steam Dump Systems. |
| Where | |
|---|---|
Callaway  Missouri (NRC Region 4) | |
| Reporting | |
| 10 CFR 50.72(b)(2)(iv)(B), RPS Actuation | |
| Time - Person (Reporting Time:+-0.73 h-0.0304 days <br />-0.00435 weeks <br />-9.99954e-4 months <br />) | |
| Opened: | Jeff Gulick 05:31 Apr 4, 2020 |
| NRC Officer: | Thomas Kendzia |
| Last Updated: | Apr 4, 2020 |
| 54639 - NRC Website
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