ENS 52619: Difference between revisions

v t e ENS Event
19:17 Mar 17, 2017
Title	Automatic Actuation of Emergency Diesel Generator
Event Description	At approximately 1517 [EDT], while restoring protective relay power to the 1B Reserve Auxiliary Transformer, a valid undervoltage actuation signal was sent to the 1B Emergency Diesel Generator (EDG). The 1B EDG automatically started and tied to the safety bus (1BA03). The 1BA03 bus was loaded by the automatic load sequencer. This actuation was identified by the Control Room Operators and the 1B EDG was locally monitored while in service. This actuation is reportable due to the automatic actuation of a system listed in 10 CFR 50.72(b)(3)(iv)(B). The reactor was not critical at the time of the event and not challenged throughout the event. Containment Cooler Number 8 did not automatically start in 'Fast Speed' as expected. Containment Cooler Number 8 was successfully started in 'Fast Speed' manually by the Control Room Operators. The NRC Resident Inspector has been notified.

ENS 52619 +/-
Where
Vogtle Georgia (NRC Region 2)
Reporting

10 CFR 50.72(b)(3)(iv)(A), System Actuation
Time - Person (Reporting Time:+-2.08 h-0.0867 days <br />-0.0124 weeks <br />-0.00285 months <br />)
Opened:	Kevin Lowe 17:12 Mar 17, 2017
NRC Officer:	Bethany Cecere
Last Updated:	Mar 17, 2017
52619 - NRC Website Loading map... {"minzoom":false,"maxzoom":false,"mappingservice":"leaflet","width":"350px","height":"250px","centre":false,"title":"","label":"","icon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"zoom":6,"defzoom":14,"layers":["OpenStreetMap"],"image layers":[],"overlays":[],"resizable":false,"fullscreen":false,"scrollwheelzoom":true,"cluster":false,"clustermaxzoom":20,"clusterzoomonclick":true,"clustermaxradius":80,"clusterspiderfy":true,"geojson":"","clicktarget":"","imageLayers":[],"locations":[{"text":"\u003Cb\u003E\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003E\u003Ca class=\"mw-selflink selflink\"\u003EENS 52619\u003C/a\u003E - \u003Ca href=\"/Vogtle\" title=\"Vogtle\"\u003EVogtle\u003C/a\u003E\n\u003C/p\u003E\u003C/div\u003E\u003C/b\u003E\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003EAutomatic Actuation of Emergency Diesel Generator\n\u003C/p\u003E\u003C/div\u003E","title":"ENS 52619 - Vogtle\n","link":"","lat":33.13062222222222,"lon":-81.77135277777778,"icon":"/w/images/1/14/Southern_Nuclear_icon.png"}],"imageoverlays":null}
v • d • e

v t e Emergency Notification System
Vogtle with 10 CFR 50.72(b)(3)(iv)(A), System Actuation
WEEKMONTHYEAR2025-05-28T16:53:00 [Table view]
[ENS list for Vogtle]

@@ Line 16: / Line 16: @@
 | event date = 03/17/2017 15:17 EDT
 | last update date = 03/17/2017
-| title = Automatic Actuation Of Emergency Diesel Generator
+| title = Automatic Actuation of Emergency Diesel Generator
 | event text = At approximately 1517 [EDT], while restoring protective relay power to the 1B Reserve Auxiliary Transformer, a valid undervoltage actuation signal was sent to the 1B Emergency Diesel Generator (EDG). The 1B EDG automatically started and tied to the safety bus (1BA03). The 1BA03 bus was loaded by the automatic load sequencer. This actuation was identified by the Control Room Operators and the 1B EDG was locally monitored while in service.
 This actuation is reportable due to the automatic actuation of a system listed in 10 CFR 50.72(b)(3)(iv)(B).

Latest revision as of 20:43, 1 March 2018