05000443/FIN-2013008-02: Difference between revisions

Finding

Title

Condensate Storage Tank Water Level Above Limits of Seismic Qualification

Description

The team identified a finding of very low safety significance involving an NCV of 10 CFR Part 50, Appendix B, Criterion III, Design Control, in that NextEra did not assure the seismic design requirements for the condensate storage tank (CST) were translated into specifications and procedures. Specifically, the team found that NextEras seismic design calculations for the CST was based, in part, on a maximum tank level. The maximum tank level was used to ensure that the floating cover inside the CST would not strike the top of the tank. NextEra engineers had concluded that this impact could cause a failure of the CST or cover during a seismic event. However, the team identified that the high level alarm and operating procedure limits for the tank were above the level credited in the calculation. Additionally, the team determined that NextEra routinely operated the CST tank above the maximum level assumed in the calculation. Following identification NextEra entered the issue into their corrective action program and proceduralized a lower maximum allowable water level for the CST to prevent a seismically induced impact of the floating cover on the tank. The finding is more than minor because it is associated with the protection against external factors (seismic event) attribute of the Mitigating Systems Cornerstone and affected the cornerstone objective of ensuring the reliability of systems that respond to initiating events to prevent undesirable consequences. The finding involved the loss or degradation of equipment so a detailed risk evaluation (DRE) was performed. Based upon the DRE, the finding was determined to be of very low safety significance. This finding was not assigned a cross-cutting aspect because the underlying cause was not indicative of current performance.

02
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 = Condensate Storage Tank Water Level Above Limits Of Seismic Qualification
+| title = Condensate Storage Tank Water Level Above Limits of Seismic Qualification
 | docket = 05000443
 | inspection report = IR 05000443/2013008

05000443/FIN-2013008-02: Difference between revisions

Latest revision as of 20:00, 20 February 2018

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05000443/FIN-2013008-02: Difference between revisions

Latest revision as of 20:00, 20 February 2018

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