ENS 48932: Difference between revisions

v t e ENS Event
20:25 Apr 16, 2013
Title	Potential Cable Size and Breaker Mismatch
Event Description	During investigation of a documentation discrepancy, a potential cable size and breaker mismatch was identified to exist in a non-safety related DC panel. Initial evaluation has shown that the cable may heat and be potentially damaged if exposed to a 'smart' high impedance fault for an extended period. This discovered condition has not been previously analyzed for NFPA [National Fire Protection Association] 805 common enclosure circuit coordination. Fire watches were established as a compensatory measure immediately following identification of the issue on April 8, 2013. An initial review of fire protection analysis was completed on April 16, 2013. Fire watches remain in place until a modification which will restore coordination is complete. The licensee notified the NRC Resident Inspector. * * RETRACTION FROM JOHN CAVES TO CHARLES TEAL AT 1400 EDT ON 6/4/13 * * * An analysis demonstrated that adjacent cables in the common enclosure would not be damaged, therefore, the condition does not significantly degrade plant safety. The licensee has notified the NRC Resident Inspector. Notified R2DO (McCoy).

ENS 48932 +/- *RETRACTED*
Where
Harris North Carolina (NRC Region 2)
Reporting

10 CFR 50.72(b)(3)(ii)(B), Unanalyzed Condition
Time - Person (Reporting Time:+-3.17 h-0.132 days <br />-0.0189 weeks <br />-0.00434 months <br />)
Opened:	Mark Lee 17:15 Apr 16, 2013
NRC Officer:	Charles Teal
Last Updated:	Jun 4, 2013
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v • d • e

v t e Emergency Notification System
Harris with 10 CFR 50.72(b)(3)(ii)(B), Unanalyzed Condition
WEEKMONTHYEAR2015-06-16T15:45:00 [Table view]
[ENS list for Harris]

@@ Line 17: / Line 17: @@
 | event date = 04/16/2013 16:25 EDT
 | last update date = 06/04/2013
-| title = Potential Cable Size And Breaker Mismatch
+| title = Potential Cable Size and Breaker Mismatch
 | event text = During investigation of a documentation discrepancy, a potential cable size and breaker mismatch was identified to exist in a non-safety related DC panel. Initial evaluation has shown that the cable may heat and be potentially damaged if exposed to a 'smart' high impedance fault for an extended period. This discovered condition has not been previously analyzed for NFPA [National Fire Protection Association] 805 common enclosure circuit coordination.
 Fire watches were established as a compensatory measure immediately following identification of the issue on April 8, 2013. An initial review of fire protection analysis was completed on April 16, 2013.  Fire watches remain in place until a modification which will restore coordination is complete.

Latest revision as of 21:00, 1 March 2018