ENS 41072: Difference between revisions

v t e ENS Event
03:56 Sep 26, 2004
Title	Unusual Event Declared Due to a Loss of Offsite Power
Event Description	At 2356 [EDT], September 25, 2004, off-site power was lost for both units. At the time of the event both units were in mode 4 and cooling down to meet shutdown entry conditions. The shutdown of both units was due to hurricane conditions from hurricane Jeanne. All four emergency diesels (2 per unit) started and properly loaded. Both units are stable in natural circulation cooling. Efforts continue to place both units on shutdown cooling. All systems operated as expected. The plant was already in a Notification of Unusual Event due to the Hurricane. Shutdown Cooling was established on Unit 1 at approximately 0020 EDT on 9/26/04. The licensee informed both state and local agencies and the NRC Resident Inspector. A conference call was held at approximately 0005 EDT with R2 Response Manager (Len Wert), NRR EO (Stu Richards) and IRD (Susan Frant) to discuss the loss of offsite power. The participants concluded that the NRC Monitoring Mode entered at 1515 EDT on 9/25 for the Hurricane was appropriate. * * UPDATE 0257 EDT ON 9/26/04 FROM TOM COSTE TO S. SANDIN * * * At 2356, September 25, 2004, St. Lucie Station, Units 1 and 2, experienced a loss of off -site power (LOOP). At the time of the LOOP all four emergency diesel generators started and loaded the safety related buses. In it's initial notification of the LOOP (0035 09/26/04, EN# 41067), FPL reported that all systems had performed as expected. However, during it's post LOOP walkdowns of the control room boards the control room operators determined that the 1 B Intake Cooling Water (ICW) pump had not automatically started as expected. The pump was subsequently started from the control room using the manual control switch. The cause for the failure to automatically start will be investigated and corrected prior to returning the unit to service. Notified R2 Response Manager (Len Wert) * * UPDATE 2350 EDT ON 9/26/04 FROM R2 IRC (BENOI DESAI) TO S. SANDIN * * * At 1050 EDT both units recovered offsite power exiting the criteria for the UE based on LOOP. The licensee informed state and local agencies and the NRC Resident Inspector. HOO Note: See related ENs # 41067, 41071 and 41073.

ENS 41072 +/-
Where
Saint Lucie Florida (NRC Region 2)
Reporting
Emergency class:	Unusual Event
10 CFR 50.72(a) (1) (i), Emergency Class Declaration 10 CFR 50.72(b)(3)(iv)(A), System Actuation
Time - Person (Reporting Time:+-3.35 h-0.14 days <br />-0.0199 weeks <br />-0.00459 months <br />)
Opened:	Tom Coste 00:35 Sep 26, 2004
NRC Officer:	Steve Sandin
Last Updated:	Sep 26, 2004
41072 - 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 41072\u003C/a\u003E - \u003Ca href=\"/Saint_Lucie\" title=\"Saint Lucie\"\u003ESaint Lucie\u003C/a\u003E\n\u003C/p\u003E\u003C/div\u003E\u003C/b\u003E\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003EUnusual Event Declared Due to a Loss of Offsite Power\n\u003C/p\u003E\u003C/div\u003E","title":"ENS 41072 - Saint Lucie\n","link":"","lat":27.348672222222223,"lon":-80.24639722222223,"icon":"/w/images/9/9b/NextEra_Energy_icon.png"}],"imageoverlays":null}
v • d • e

v t e Emergency Notification System
Saint Lucie with 10 CFR 50.72(a)(1)(i), Emergency Class Declaration, 10 CFR 50.72(b)(3)(iv)(A), System Actuation
WEEKMONTHYEAR2022-09-03T02:48:00 [Table view]
[ENS list for Saint Lucie]

@@ Line 16: / Line 16: @@
 | event date = 09/25/2004 23:56 EDT
 | last update date = 09/26/2004
-| title = Unusual Event Declared Due To A Loss Of Offsite Power
+| title = Unusual Event Declared Due to a Loss of Offsite Power
 | event text = At 2356 [EDT], September 25, 2004, off-site power was lost for both units.  At the time of the event both units were in mode 4 and cooling down to meet shutdown entry conditions.  The shutdown of both units was due to hurricane conditions from hurricane Jeanne.  All four emergency diesels (2 per unit) started and properly loaded.  Both units are stable in natural circulation cooling.  Efforts continue to place both units on shutdown cooling.  All systems operated as expected.  The plant was already in a Notification of Unusual Event due to the Hurricane.  Shutdown Cooling was established on Unit 1 at approximately 0020 EDT on 9/26/04.
 The licensee informed both state and local agencies and the NRC Resident Inspector.  A conference call was held at approximately 0005 EDT with R2 Response Manager (Len Wert), NRR EO (Stu Richards) and IRD (Susan Frant) to discuss the loss of offsite power.  The participants concluded that the NRC Monitoring Mode entered at 1515 EDT on 9/25 for the Hurricane was appropriate.

v t e Unit 1
CE
Reactor critical	Not Critical
Scram	No
Before	Hot Shutdown (0 %)
After	Hot Shutdown (0 %)

v t e Unit 2
CE
Reactor critical	Not Critical
Scram	No
Before	Hot Shutdown (0 %)
After	Hot Shutdown (0 %)

ENS 41072: Difference between revisions

Latest revision as of 22:22, 1 March 2018

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ENS 41072: Difference between revisions

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