ENS 44492: Difference between revisions

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Latest revision as of 21:13, 1 March 2018

v t e ENS Event
11:34 Sep 16, 2008
Title	Loss of Shutdown Cooling Capability
Event Description	On September 16, 2008 at 0734 the James A, FitzPatrick Nuclear Power Plant was shutdown and operating in the refueling mode (Mode 5), when shutdown cooling was lost. Shutdown cooling was lost while hanging a tagout on the Reactor Protection System (RPS). When removing fuses as directed by the tagout, isolation logic for Shutdown Cooling suction salve 10MOV-18 was actuated. This Suction Valve isolates the common shutdown cooling suction line to all Residual Heat Removal (RHR) Pumps. At the time of the isolation cavity flood-up was in progress and the time to boil was greater than 5.5 hours5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br />. The appropriate Technical Specification LCO Actions were entered and shutdown cooling was restored at 08:27. Power was restored to RPS and work in that system has been suspended pending the results our investigation into the cause of the event. Also additional controls have been established to review any electrical jumper/ protective tagging interactions prior to installation. The event has been entered into the corrective action program and a Licensee Event Report (LER) will be filed within 60 Days as required by 10 CFR 50.73(a)(2)(v). The resident inspector has been briefed and the state Public Service Commission (PSC) will also be notified.

ENS 44492 +/-
Where
Fitzpatrick New York (NRC Region 1)
Reporting

10 CFR 50.72(b)(3)(v)(B), Loss of Safety Function - Remove Residual Heat
LER:	05000333/LER-2008-001
Time - Person (Reporting Time:+1.58 h0.0658 days <br />0.0094 weeks <br />0.00216 months <br />)
Opened:	Eugene Dorman 13:09 Sep 16, 2008
NRC Officer:	Jason Kozal
Last Updated:	Sep 16, 2008
44492 - 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 44492\u003C/a\u003E - \u003Ca href=\"/FitzPatrick\" title=\"FitzPatrick\"\u003EFitzPatrick\u003C/a\u003E\n\u003C/p\u003E\u003C/div\u003E\u003C/b\u003E\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003ELoss of Shutdown Cooling Capability\n\u003C/p\u003E\u003C/div\u003E","title":"ENS 44492 - FitzPatrick\n","link":"","lat":43.52241111111111,"lon":-76.39899444444444,"icon":"/w/images/b/be/Constellation_icon.png"}],"imageoverlays":null}
v • d • e

v t e Emergency Notification System
FitzPatrick with 10 CFR 50.72(b)(3)(v)(B), Loss of Safety Function - Remove Residual Heat
WEEKMONTHYEAR2008-09-16T11:34:00 [Table view]
[ENS list for FitzPatrick]

@@ Line 16: / Line 16: @@
 | event date = 09/16/2008 07:34 EDT
 | last update date = 09/16/2008
-| title = Loss Of Shutdown Cooling Capability
+| title = Loss of Shutdown Cooling Capability
 | event text = On September 16, 2008 at 0734 the James A, FitzPatrick Nuclear Power Plant was shutdown and operating in the refueling mode (Mode 5), when shutdown cooling was lost. Shutdown cooling was lost while hanging a tagout on the Reactor Protection System (RPS). When removing fuses as directed by the tagout, isolation logic for Shutdown Cooling suction salve 10MOV-18 was actuated. This Suction Valve isolates the common shutdown cooling suction line to all Residual Heat Removal (RHR) Pumps. At the time of the isolation cavity flood-up was in progress and the time to boil was greater than 5.5 hours. The appropriate Technical Specification LCO Actions were entered and shutdown cooling was restored at 08:27.
 Power was restored to RPS and work in that system has been suspended pending the results our investigation into the cause of the event.  Also additional controls have been established to review any electrical jumper/ protective tagging interactions prior to installation.