ENS 43119: Difference between revisions

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Latest revision as of 21:17, 1 March 2018

v t e ENS Event
11:42 Jan 25, 2007
Title	Loss of Safety Parameters Display System (Spds)
Event Description	On 01/25/07 at 05:42am CT, the Wolf Creek Generating Station Nuclear Plant Information System (NPIS) computer 'C' primary and all backup MUX's failed. Subsequent troubleshooting failed to restore all primary MUX's to operation in a short period of time. The failure to restore the NPIS computer has resulted in a loss of functionality of the SPDS. Due to SPDS being lost for longer than a short period of time, Wolf Creek Nuclear Operating Corporation is making this ENS notification pursuant to the criteria of 10 CFR 50.72(b)(3)(xiii). There was no other loss of emergency assessment capability concurrent with the ongoing loss of SPDS. Plant personnel entered the appropriate Off-Normal procedure and obtained local readings for the equipment that is normally monitored by SPDS and NPIS during the loss of the plant computer. NPIS was restored to service and declared operable on the primary plant computer at 13:57 CT. The return of the NPIS computer to an operable condition restored the SPDS assessment capability function. The licensee notified the NRC Resident Inspector

ENS 43119 +/-
Where
Wolf Creek Kansas (NRC Region 4)
Reporting

10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness
Time - Person (Reporting Time:+3.93 h0.164 days <br />0.0234 weeks <br />0.00538 months <br />)
Opened:	Lance Lane 15:38 Jan 25, 2007
NRC Officer:	John Mackinnon
Last Updated:	Jan 25, 2007
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v • d • e

v t e Emergency Notification System
Wolf Creek with 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness
WEEKMONTHYEAR2020-10-27T21:08:00 [Table view]
[ENS list for Wolf Creek]

@@ Line 16: / Line 16: @@
 | event date = 01/25/2007 05:42 CST
 | last update date = 01/25/2007
-| title = Loss Of Safety Parameters Display System (Spds)
+| title = Loss of Safety Parameters Display System (Spds)
 | event text = On 01/25/07 at 05:42am CT, the Wolf Creek Generating Station Nuclear Plant Information System (NPIS) computer 'C' primary and all backup MUX's failed.  Subsequent troubleshooting failed to restore all primary MUX's to operation in a short period of time.
 The failure to restore the NPIS computer has resulted in a loss of functionality of the SPDS.  Due to SPDS being lost for longer than a short period of time, Wolf Creek Nuclear Operating Corporation is making this ENS notification pursuant to the criteria of 10 CFR 50.72(b)(3)(xiii).  There was no other loss of emergency assessment capability concurrent with the ongoing loss of SPDS.  Plant personnel entered the appropriate Off-Normal procedure and obtained local readings for the equipment that is normally monitored by SPDS and NPIS during the loss of the plant computer.