ENS 51730: Difference between revisions

From kanterella

Latest revision as of 21:45, 1 March 2018

v t e ENS Event
04:05 Feb 12, 2016
Title	Emergency Diesel Generator Auto-Started Due to the Loss of a Station Service Transformer
Event Description	On 02/11/2016, at 2305 [EST], Ginna Station experienced a loss of Station Service Transformer 12A causing Emergency Diesel Generator 1A to automatically start due to under-voltage signals to safeguards buses 14 and 18. All plant systems responded as designed. Control room operators stabilized the plant per abnormal operating procedures. The plant is currently in a 100/0 electrical lineup [supplied by the 12B Service Station Transformer] on the off site circuit 767 with the 1A Emergency Diesel Generator secured. The loss of the station service transformer is currently under investigation. This is reportable as a valid system actuation that was not part of a pre-planned sequence during testing. The NRC Resident Inspector has been notified.

ENS 51730 +/-
Where
Ginna New York (NRC Region 1)
Reporting

10 CFR 50.72(b)(3)(iv)(A), System Actuation
Time - Person (Reporting Time:+-0.23 h-0.00958 days <br />-0.00137 weeks <br />-3.15054e-4 months <br />)
Opened:	Kenneth Corl 03:51 Feb 12, 2016
NRC Officer:	Howie Crouch
Last Updated:	Feb 12, 2016
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v • d • e

v t e Emergency Notification System
Ginna with 10 CFR 50.72(b)(3)(iv)(A), System Actuation
WEEKMONTHYEAR2023-09-09T15:43:00 [Table view]
[ENS list for Ginna]

@@ Line 16: / Line 16: @@
 | event date = 02/11/2016 23:05 EST
 | last update date = 02/12/2016
-| title = Emergency Diesel Generator Auto-Started Due To The Loss Of A Station Service Transformer
+| title = Emergency Diesel Generator Auto-Started Due to the Loss of a Station Service Transformer
 | event text = On 02/11/2016, at 2305 [EST], Ginna Station experienced a loss of Station Service Transformer 12A causing Emergency Diesel Generator 1A to automatically start due to under-voltage signals to safeguards buses 14 and 18. All plant systems responded as designed. Control room operators stabilized the plant per abnormal operating procedures. The plant is currently in a 100/0 electrical lineup [supplied by the 12B Service Station Transformer] on the off site circuit 767 with the 1A Emergency Diesel Generator secured. The loss of the station service transformer is currently under investigation.
 This is reportable as a valid system actuation that was not part of a pre-planned sequence during testing.