ENS 41824: Difference between revisions

From kanterella

Latest revision as of 22:20, 1 March 2018

v t e ENS Event
14:17 Jul 7, 2005
Title	License Condition Report Due to Exceeding Technical Specification Inoperability Time
Event Description	FPL Energy Seabrook Station has discovered that a condition existed that was prohibited by the Technical Specifications. The Train B Containment Building Spray Pump (CBS) was inoperable for a period of time longer than permitted by the Technical Specifications. A failed relay driver board would have prevented the Train B CBS pump from automatically starting in response to high containment pressure. Following an LOP coincident with a high containment pressure, the initial start signal from the Train B EDG emergency power sequencer would not have initiated a CBS pump start, but an automatic start signal generated at a later time in the LOP sequence would have started the pump. The failed relay driver board only inhibited automatic starting of the Train B CBS pump. The Train B EDG remained capable of providing power to other Train B loads including the automatic start of the CBS pump at the later sequence. This event is being reported in accordance with Seabrook Station Operating License condition 2.G as a failure to operate the facility in accordance with the Technical Specifications. The licensee discovered the condition during surveillance testing and the condition has been repaired. The licensee notified the NRC Resident Inspector.

ENS 41824 +/-
Where
Seabrook New Hampshire (NRC Region 1)
Reporting

Other Unspec Reqmnt
Time - Person (Reporting Time:+-1.43 h-0.0596 days <br />-0.00851 weeks <br />-0.00196 months <br />)
Opened:	Ken Browne 12:51 Jul 7, 2005
NRC Officer:	Bill Huffman
Last Updated:	Jul 7, 2005
41824 - 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 41824\u003C/a\u003E - \u003Ca href=\"/Seabrook\" title=\"Seabrook\"\u003ESeabrook\u003C/a\u003E\n\u003C/p\u003E\u003C/div\u003E\u003C/b\u003E\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003ELicense Condition Report Due to Exceeding Technical Specification Inoperability Time\n\u003C/p\u003E\u003C/div\u003E","title":"ENS 41824 - Seabrook\n","link":"","lat":42.89886111111111,"lon":-70.85284722222222,"icon":"/w/images/9/9b/NextEra_Energy_icon.png"}],"imageoverlays":null}
v • d • e

v t e Emergency Notification System
Seabrook with Other Unspec Reqmnt
WEEKMONTHYEAR2010-02-26T04:15:00 [Table view]
[ENS list for Seabrook]

@@ Line 16: / Line 16: @@
 | event date = 07/07/2005 10:17 EDT
 | last update date = 07/07/2005
-| title = License Condition Report Due To Exceeding Technical Specification Inoperability Time
+| title = License Condition Report Due to Exceeding Technical Specification Inoperability Time
 | event text = FPL Energy Seabrook Station has discovered that a condition existed that was prohibited by the Technical Specifications.  The Train B Containment Building Spray Pump (CBS) was inoperable for a period of time longer than permitted by the Technical Specifications.  A failed relay driver board would have prevented the Train B CBS pump from automatically starting in response to high containment pressure.  Following an LOP coincident with a high containment pressure, the initial start signal from the Train B EDG emergency power sequencer would not have initiated a CBS pump start, but an automatic start signal generated at a later time in the LOP sequence would have started the pump.  The failed relay driver board only inhibited automatic starting of the Train B CBS pump.  The Train B EDG remained capable of providing power to other Train B loads including the automatic start of the CBS pump at the later sequence.
 This event is being reported in accordance with Seabrook Station Operating License condition 2.G as a failure to operate the facility in accordance with the Technical Specifications.