ENS 45434: Difference between revisions

v t e ENS Event
16:25 Oct 15, 2009
Title	Unit Commenced Shutdown Due to Inoperable Division 2 Emergency Service Water System
Event Description	This event is being reported in accordance with 10CFR50.72(b)(2)(i). On October 15, 2009, at approximately 1225 hours0.0142 days <br />0.34 hours <br />0.00203 weeks <br />4.661125e-4 months <br />, the Perry Nuclear Power Plant commenced a Technical Specification required plant shutdown. On October 14, 2009, At 1747 hours0.0202 days <br />0.485 hours <br />0.00289 weeks <br />6.647335e-4 months <br />, the Division 2 Emergency Service Water (ESW) system was declared inoperable and unavailable for planned work. The plant entered Technical Specification (TS) 3.7.1 Action A for one inoperable ESW Division. Other supported TSs were also entered (TS 3.8.1 for the Division 2 diesel generator, TS 3.6.1.7 for Containment Spray 'B', TS 3.6.2.3 for Suppression Pool Cooling 'B', TS 3.7.10 for Emergency Closed Cooling 'B', TS 3.5.1 for LPCI 'B' & 'C', among others). On October 15, 2009, at 0601 hours0.00696 days <br />0.167 hours <br />9.937169e-4 weeks <br />2.286805e-4 months <br />, the ESW 'B' pump was started for a planned pump run. At 0718 hours0.00831 days <br />0.199 hours <br />0.00119 weeks <br />2.73199e-4 months <br />, the ESW 'B' pump tripped for unknown reasons. The determination was made to commence a controlled plant shutdown and power reduction commenced at 1225 hours0.0142 days <br />0.34 hours <br />0.00203 weeks <br />4.661125e-4 months <br />. This decision was based on the anticipated investigation and repair time of ESW 'B' pump exceeding the TS 3.7.1 Action A 72 hour8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> LCO completion time, and therefore, Action B requires the plant to be in MODE 3 within 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> and in MODE 4 in 36 hours4.166667e-4 days <br />0.01 hours <br />5.952381e-5 weeks <br />1.3698e-5 months <br />. The TS 3.7.1 Action A 72 hour8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> LCO completion time coincides with October 17, 2009, at 1747 hours0.0202 days <br />0.485 hours <br />0.00289 weeks <br />6.647335e-4 months <br />. Currently, the plant is expected to be in MODE 3 at approximately 2300 hours0.0266 days <br />0.639 hours <br />0.0038 weeks <br />8.7515e-4 months <br /> on October 15, 2009. The NRC Resident Inspector has been notified. The State and Counties will also be notified.

ENS 45434 +/-
Where
Perry Ohio (NRC Region 3)
Reporting

10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown
LER:	05000440/LER-2009-003
Time - Person (Reporting Time:+-1.63 h-0.0679 days <br />-0.0097 weeks <br />-0.00223 months <br />)
Opened:	Michael Nemcek 14:47 Oct 15, 2009
NRC Officer:	Steve Sandin
Last Updated:	Oct 15, 2009
45434 - 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 45434\u003C/a\u003E - \u003Ca href=\"/Perry\" title=\"Perry\"\u003EPerry\u003C/a\u003E\n\u003C/p\u003E\u003C/div\u003E\u003C/b\u003E\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003EUnit Commenced Shutdown Due to Inoperable Division 2 Emergency Service Water System\n\u003C/p\u003E\u003C/div\u003E","title":"ENS 45434 - Perry\n","link":"","lat":41.79572777777778,"lon":-81.145375,"icon":"/w/images/a/ad/FirstEnergy_icon.png"}],"imageoverlays":null}
v • d • e

v t e Emergency Notification System
Perry with 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown
WEEKMONTHYEAR2024-05-23T08:00:00 [Table view]
[ENS list for Perry]

@@ Line 16: / Line 16: @@
 | event date = 10/15/2009 12:25 EDT
 | last update date = 10/15/2009
-| title = Unit Commenced Shutdown Due To Inoperable Division 2 Emergency Service Water System
+| title = Unit Commenced Shutdown Due to Inoperable Division 2 Emergency Service Water System
 | event text = This event is being reported in accordance with 10CFR50.72(b)(2)(i).  On October 15, 2009, at approximately 1225 hours, the Perry Nuclear Power Plant commenced a Technical Specification required plant shutdown.
 On October 14, 2009, At 1747 hours, the Division 2 Emergency Service Water (ESW) system was declared inoperable and unavailable for planned work. The plant entered Technical Specification (TS) 3.7.1 Action A for one inoperable ESW Division.  Other supported TSs were also entered (TS 3.8.1 for the Division 2 diesel generator, TS 3.6.1.7 for Containment Spray 'B', TS 3.6.2.3 for Suppression Pool Cooling 'B', TS 3.7.10 for Emergency Closed Cooling 'B', TS 3.5.1 for LPCI 'B' & 'C', among others).

v t e Unit 1
GE-6
Reactor critical	Critical
Scram	No
Before	Power Operation (100 %)
After	Power Operation (75 %)

ENS 45434: Difference between revisions

Latest revision as of 21:11, 1 March 2018

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ENS 45434: Difference between revisions

Latest revision as of 21:11, 1 March 2018

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