ENS 47353: Difference between revisions
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| event date = 10/19/2011 05:28 EDT | | event date = 10/19/2011 05:28 EDT | ||
| last update date = 10/19/2011 | | last update date = 10/19/2011 | ||
| title = Manual Reactor Trip | | title = Manual Reactor Trip on Loss of Condenser Vacuum | ||
| event text = On October 19, 2011, at 0528, Unit 1 was manually tripped due to rising condenser backpressure. All (Control Element Assembly) CEAs fully inserted into the core. Decay Heat Removal is from Main Feedwater and Steam Bypass to the Main Condenser. The cause of the rising backpressure was an unplanned trip the Circulating Water Pump 1A1, which degraded the Circulating Water System performance. At the time of the trip, an additional Circulating Water Pump 1A2 was secured for planned maintenance. | | event text = On October 19, 2011, at 0528, Unit 1 was manually tripped due to rising condenser backpressure. All (Control Element Assembly) CEAs fully inserted into the core. Decay Heat Removal is from Main Feedwater and Steam Bypass to the Main Condenser. The cause of the rising backpressure was an unplanned trip the Circulating Water Pump 1A1, which degraded the Circulating Water System performance. At the time of the trip, an additional Circulating Water Pump 1A2 was secured for planned maintenance. | ||
The cause of the Circulating Water Pump 1A1 trip is under investigation. | The cause of the Circulating Water Pump 1A1 trip is under investigation. | ||
Latest revision as of 22:05, 1 March 2018
| Where | |
|---|---|
Saint Lucie  Florida (NRC Region 2) | |
| Reporting | |
| 10 CFR 50.72(b)(2)(iv)(B), RPS Actuation | |
| Time - Person (Reporting Time:+-1.93 h-0.0804 days <br />-0.0115 weeks <br />-0.00264 months <br />) | |
| Opened: | Dave Fields 07:32 Oct 19, 2011 |
| NRC Officer: | John Shoemaker |
| Last Updated: | Oct 19, 2011 |
| 47353 - NRC Website
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