ENS 45265: Difference between revisions

From kanterella

Latest revision as of 21:11, 1 March 2018

v t e ENS Event
21:06 Aug 15, 2009
Title	Automatic Reactor Scram Due to a Turbine Trip
Event Description	At 1606 CDT on August 15, 2009, LaSalle Unit 2 automatically scrammed due to a turbine trip. The turbine trip occurred during weekly turbine trip testing. Two safety relief valves actuated [and reseated] in the relief mode on the turbine trip. The reactor water cleanup system isolated during the transient (not being reported as there was no isolation in multiple systems). The plant is stable with reactor pressure control to the main condenser via the main steam isolation valves. The plant is planning to remain in hot shutdown pending [turbine] electro-hydraulic (EHC) system troubleshooting and repair. All control rods fully inserted during the scram. The site is aligning the ring bus for the normal shutdown electrical lineup. Reactor water level is being maintained using the main feedwater system and decay heat is being removed via the turbine bypass valves. The licensee notified the NRC Resident Inspector.

ENS 45265 +/-
Where
LaSalle Illinois (NRC Region 3)
Reporting

10 CFR 50.72(b)(2)(iv)(B), RPS Actuation
Time - Person (Reporting Time:+-1 h-0.0417 days <br />-0.00595 weeks <br />-0.00137 months <br />)
Opened:	Michael Findley 20:06 Aug 15, 2009
NRC Officer:	Mark Abramovitz
Last Updated:	Aug 15, 2009
45265 - 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 45265\u003C/a\u003E - \u003Ca href=\"/LaSalle\" title=\"LaSalle\"\u003ELaSalle\u003C/a\u003E\n\u003C/p\u003E\u003C/div\u003E\u003C/b\u003E\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003EAutomatic Reactor Scram Due to a Turbine Trip\n\u003C/p\u003E\u003C/div\u003E","title":"ENS 45265 - LaSalle\n","link":"","lat":41.24573888888889,"lon":-88.66919444444444,"icon":"/w/images/b/be/Constellation_icon.png"}],"imageoverlays":null}
v • d • e

v t e Emergency Notification System
LaSalle with 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation
WEEKMONTHYEAR2025-11-02T19:46:00 [Table view]
[ENS list for LaSalle]

@@ Line 16: / Line 16: @@
 | event date = 08/15/2009 16:06 CDT
 | last update date = 08/15/2009
-| title = Automatic Reactor Scram Due To A Turbine Trip
+| title = Automatic Reactor Scram Due to a Turbine Trip
 | event text = At 1606 CDT on August 15, 2009, LaSalle Unit 2 automatically scrammed due to a turbine trip.  The turbine trip occurred during weekly turbine trip testing.  Two safety relief valves actuated [and reseated] in the relief mode on the turbine trip.  The reactor water cleanup system isolated during the transient (not being reported as there was no isolation in multiple systems).  The plant is stable with reactor pressure control to the main condenser via the main steam isolation valves. The plant is planning to remain in hot shutdown pending [turbine] electro-hydraulic (EHC) system troubleshooting and repair.
 All control rods fully inserted during the scram.  The site is aligning the ring bus for the normal shutdown electrical lineup.  Reactor water level is being maintained using the main feedwater system and decay heat is being removed via the turbine bypass valves.