ENS 44506: Difference between revisions

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| event date = 09/20/2008 09:06 EDT
| event date = 09/20/2008 09:06 EDT
| last update date = 09/20/2008
| last update date = 09/20/2008
| title = Reactor Trip Due To Turbine Trip
| title = Reactor Trip Due to Turbine Trip
| event text = At 0906 EDT Watts Bar Unit 1 experienced a Reactor trip in response to a Turbine trip.  This caused an automatic AFW Pump start from P-4 coincident with Lo Tave signal.  First indications are that the Exciter Field Breaker tripped open. The cause is under investigation. All ESF systems responded as designed with no other issues.  The plant is currently stable and is being maintained in Mode 3.  Plans for plant restart are pending awaiting the cause investigation.
| event text = At 0906 EDT Watts Bar Unit 1 experienced a Reactor trip in response to a Turbine trip.  This caused an automatic AFW Pump start from P-4 coincident with Lo Tave signal.  First indications are that the Exciter Field Breaker tripped open. The cause is under investigation. All ESF systems responded as designed with no other issues.  The plant is currently stable and is being maintained in Mode 3.  Plans for plant restart are pending awaiting the cause investigation.
All control rods fully inserted into the core.  Plant decay heat removal is through the steam dumps to the main condenser. The offsite power is available and lined up to plant system loads.   
All control rods fully inserted into the core.  Plant decay heat removal is through the steam dumps to the main condenser. The offsite power is available and lined up to plant system loads.   

Latest revision as of 22:13, 1 March 2018

ENS 44506 +/-
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-2008-004
Time - Person (Reporting Time:+-1.6 h-0.0667 days <br />-0.00952 weeks <br />-0.00219 months <br />)
Opened: Billy Johnson
11:30 Sep 20, 2008
NRC Officer: Vince Klco
Last Updated: Sep 20, 2008
44506 - NRC Website
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