ENS 45369: Difference between revisions
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StriderTol (talk | contribs) (Created page by program invented by Mark Hawes) |
StriderTol (talk | contribs) (Created page by program invented by StriderTol) |
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| event date = 09/20/2009 17:47 CDT | | event date = 09/20/2009 17:47 CDT | ||
| last update date = 09/20/2009 | | last update date = 09/20/2009 | ||
| title = Manual Scram Due | | title = Manual Scram Due to Reactor Recirc Pump Trip | ||
| event text = At 1747 hours on September 20, 2009, at River Bend Station, during plant shut down for a planned outage, an unplanned manual reactor scram was initiated by plant operators. As part of the planned shutdown, the reactor recirculation pumps were being transferred from fast to slow speed. This transfer did not occur as expected. Instead, the pumps tripped to off. After this occurred, the operators entered the manual reactor scram. Power level was approximately 23 percent at the time of the scram. All other plant equipment and systems performed as expected. Plant personnel are investigating the cause of the pump trip. The plant is proceeding with planned outage activities. | | event text = At 1747 hours on September 20, 2009, at River Bend Station, during plant shut down for a planned outage, an unplanned manual reactor scram was initiated by plant operators. As part of the planned shutdown, the reactor recirculation pumps were being transferred from fast to slow speed. This transfer did not occur as expected. Instead, the pumps tripped to off. After this occurred, the operators entered the manual reactor scram. Power level was approximately 23 percent at the time of the scram. All other plant equipment and systems performed as expected. Plant personnel are investigating the cause of the pump trip. The plant is proceeding with planned outage activities. | ||
All rods fully inserted. Decay heat is being removed via main steam drains and bypass valves to the condenser. Reactor pressure is at 200 psig. The electrical lineup is normal and all safety related equipment is available if required. No safety or relief valves lifted during the manual scram. | All rods fully inserted. Decay heat is being removed via main steam drains and bypass valves to the condenser. Reactor pressure is at 200 psig. The electrical lineup is normal and all safety related equipment is available if required. No safety or relief valves lifted during the manual scram. | ||
Latest revision as of 21:11, 1 March 2018
| Where | |
|---|---|
River Bend  Louisiana (NRC Region 4) | |
| Reporting | |
| 10 CFR 50.72(b)(2)(iv)(B), RPS Actuation | |
| Time - Person (Reporting Time:+-1.25 h-0.0521 days <br />-0.00744 weeks <br />-0.00171 months <br />) | |
| Opened: | John Pipkin Jr 21:32 Sep 20, 2009 |
| NRC Officer: | John Knoke |
| Last Updated: | Sep 20, 2009 |
| 45369 - NRC Website
| |