ENS 52725: Difference between revisions

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| event date = 05/02/2017 19:45 EDT
| event date = 05/02/2017 19:45 EDT
| last update date = 05/02/2017
| last update date = 05/02/2017
| title = Manual Reactor Trip Due To Failed Reactor Coolant Pump Power Transfer
| title = Manual Reactor Trip Due to Failed Reactor Coolant Pump Power Transfer
| event text = On May 2nd, 2017, at 1945 EDT, Watts Bar Nuclear [WBN] Plant Unit 1 reactor was manually tripped due to a failure of the #3 Reactor Coolant Pump normal feeder breaker to close during the planned power transfer to unit power following startup. Concurrent with the reactor trip, the Auxiliary Feedwater system actuated as designed.
| event text = On May 2nd, 2017, at 1945 EDT, Watts Bar Nuclear [WBN] Plant Unit 1 reactor was manually tripped due to a failure of the #3 Reactor Coolant Pump normal feeder breaker to close during the planned power transfer to unit power following startup. Concurrent with the reactor trip, the Auxiliary Feedwater system actuated as designed.
All control and shutdown rods fully inserted. All safety systems responded as designed. The unit is currently stable in Mode 3, with decay heat removal via auxiliary feedwater and main steam dump systems. Unit 1 is in a normal shutdown electrical alignment.
All control and shutdown rods fully inserted. All safety systems responded as designed. The unit is currently stable in Mode 3, with decay heat removal via auxiliary feedwater and main steam dump systems. Unit 1 is in a normal shutdown electrical alignment.

Latest revision as of 20:42, 1 March 2018

ENS 52725 +/-
Where
Watts Bar Tennessee Valley Authority icon.png
Tennessee (NRC Region 2)
Reporting
10 CFR 50.72(b)(2)(iv)(B), RPS Actuation

10 CFR 50.72(b)(3)(iv)(A), System Actuation
Time - Person (Reporting Time:+-1.2 h-0.05 days <br />-0.00714 weeks <br />-0.00164 months <br />)
Opened: Bill Sprinkle
22:33 May 2, 2017
NRC Officer: Dong Park
Last Updated: May 2, 2017
52725 - NRC Website
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