05000443/FIN-2013008-01: Difference between revisions

Finding

Title

Failure to Verify Adequate Fault Protection for Safety Related Equipment from NON-SAFETY Related Load Fault

Description

The team identified a finding of very low safety significance involving a non-cited violation (NCV) of the 10 CFR Part 50, Appendix B, Criterion III, Design Control, in that, NextEra did not appropriately select and review, for suitability of application, a safety related over-current protection device for a safety related power panel (EDE-PP01B). Specifically, NextEra did not consider the effects of the current-limiter function of safety related inverters, which supplied the safety related power panel and would limit fault current at the over-current protection device. As a result, the safety related over-current protective devices would not have prevented a postulated fault of a non-safety related load, supplied from the safety related power panel, from causing a momentary loss of voltage to the power panel and all associated safety related loads. In response, NextEra entered the issue into their corrective action program and performed a preliminary analysis that determined an existing non-safety related fuse would provide adequate over-current protection. NextEra credited the use of this fuse as an interim compensatory measure in their operability assessment in order to conclude the system was operable. The team determined the analysis and associated assessment were reasonable. The finding was more than minor because it was similar to Example 3.j of NRC IMC 0612, Appendix E, and was associated with the Design Control attribute of the Mitigating Systems Cornerstone and affected the cornerstone objective to ensure the availability, reliability, and capability of systems that respond to initiating events to prevent undesirable consequences. The team determined the finding was of very low safety significance because the issue was a design or qualification deficiency that did not result in inoperability of the system. This finding was not assigned a cross-cutting aspect because the underlying cause was not indicative of current performance.

01
Site:	Seabrook
Report	IR 05000443/2013008 Section 1R21
Date counted	Jun 30, 2013 (2013Q2)
Type:	NCV: Green
cornerstone	Mitigating Systems
Identified by:	NRC identified
Inspection Procedure:	IP 71111.21
Inspectors (proximate)	J Richmond K Mangan S Pindale W Sherbin J Schoppy S Kobylarz P Krohn
Violation of:	10 CFR 50 Appendix B Criterion III, Design Control
INPO aspect
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v • d • e

Finding - Seabrook - IR 05000443/2013008

1(0)2(2)3(1)4(1)5(1)6(0)7(0)8(4)301(0)403(0)404(0)501(0)

IR 05000443/2013008: 1 2 3 4

Finding List (Seabrook) @ 2013Q2

CCA Matrix: 2013Q2

	Q	CCA	Title
05000443/FIN-2012004-01	2012Q3	H.8	Scaffold Installed with Insufficient Separation to SAFETY-RELATED Equipment
05000443/FIN-2012004-02	2012Q3	P.1	Inadequate Process Necessary for Notification of Oros During an Emergency Declaration
05000443/FIN-2012004-03	2012Q3	P.1	Inadequate Calibration of Respirator Fit Test Equipment
05000443/FIN-2012005-01	2012Q4	H.6	Failure to Correct a Condition Adverse to Quality for the L-5 Fici Connection
05000443/FIN-2012005-02	2012Q4	H.8	Failure to Adequately Implement Procedure Led to Reactor Coolant System Leakage from Pressurizer Safety Valve Flange
05000443/FIN-2013002-01	2013Q1	H.12	Loss of DC Control Power to Switchyard #2
05000443/FIN-2013002-02	2013Q1	H.14	Failure to Evaluate Service Water Cooling Tower Level
05000443/FIN-2013008-01	2013Q2		Failure to Verify Adequate Fault Protection for Safety Related Equipment from NON-SAFETY Related Load Fault
05000443/FIN-2013008-02	2013Q2		Condensate Storage Tank Water Level Above Limits of Seismic Qualification
05000443/FIN-2013008-03	2013Q2	H.13	Failure to Perform Preventative Maintenance on the Supplemental Emergency Power System
05000443/FIN-2013008-04	2013Q2	H.7	Primary Component Cooling Water System Unavailable Following a Seismic Event
05000443/FIN-2013003-01	2013Q2		Tech Spec 6.10.1 Violation - Contractor Electrician Entered High Radiation Area Without Receiving Health Physics Briefing

Self-Identified List (Seabrook)

	Q	Title
05000443/FIN-2012004-04	2012Q3	Licensee-Identified Violation
05000443/FIN-2012005-03	2012Q4	Licensee-Identified Violation

[Seabrook Findings full list]

@@ Line 1: / Line 1: @@
 {{finding
-| title = Failure To Verify Adequate Fault Protection For Safety Related Equipment From Non-Safety Related Load Fault
+| title = Failure to Verify Adequate Fault Protection for Safety Related Equipment from NON-SAFETY Related Load Fault
 | docket = 05000443
 | inspection report = IR 05000443/2013008

05000443/FIN-2013008-01: Difference between revisions

Latest revision as of 23:19, 29 May 2018

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05000443/FIN-2013008-01: Difference between revisions

Latest revision as of 23:19, 29 May 2018

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