ENS 50839: Difference between revisions

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| event date = 02/21/2015 10:32 EST
| event date = 02/21/2015 10:32 EST
| last update date = 02/21/2015
| last update date = 02/21/2015
| title = Manual Reactor Trip Inserted Due To Rapid Loss Of Main Condenser Vacuum
| title = Manual Reactor Trip Inserted Due to Rapid Loss of Main Condenser Vacuum
| event text = On February 21, 2015 at 10:32 EST, Watts Bar Nuclear Plant Unit 1 reactor was manually tripped due to rapidly dropping main condenser vacuum.  Concurrent with the reactor trip the Auxiliary Feedwater system actuated as designed.
| event text = On February 21, 2015 at 10:32 EST, Watts Bar Nuclear Plant Unit 1 reactor was manually tripped due to rapidly dropping main condenser vacuum.  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 S/G PORVs.  Main Steam Isolation Valves are closed.  The Station 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 S/G PORVs.  Main Steam Isolation Valves are closed.  The Station is in a normal shutdown electrical alignment.

Latest revision as of 21:48, 1 March 2018

ENS 50839 +/-
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
LER: 05000390/LER-2015-001
Time - Person (Reporting Time:+-2.77 h-0.115 days <br />-0.0165 weeks <br />-0.00379 months <br />)
Opened: John Tuite
12:46 Feb 21, 2015
NRC Officer: Jeff Rotton
Last Updated: Feb 21, 2015
50839 - NRC Website
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