05000305/FIN-2013002-01
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Finding | |
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Title | Incorrect Ultimate Heat Sink Water Level |
Description | The inspectors identified a finding of very low safety significance and associated non-cited violation of 10 CFR Part 50, Appendix B, Criterion III, Design Control, for the failure to assure that appropriate quality standards were specified and included in design documents, and that deviations from such standards were controlled. Specifically, during implementation of Improved Technical Specifications (TSs), the licensee incorrectly specified the ultimate heat sink (UHS) level in the non-conservative direction by one foot. Therefore, since February 24, 2011, the TS 3.7.9.1 value was non-conservative. The licensee initiated a condition report (CR) and performed an operability determination, which included a review of NRC Administrative Letter 98-10 for non-conservative TS. The finding was determined to be more than minor because the finding was associated with the Mitigating Systems Cornerstone attribute of Design Control, and adversely affected the Cornerstone objective of ensuring the capability of systems that respond to initiating events to prevent undesirable consequences (i.e., core damage). Specifically, the licensee did not assign the appropriate UHS level to assure the safety-related (SR) service water (SW) pumps operability. Therefore, licensee surveillances were conducted with the incorrect UHS level. The inspectors determined the finding could be evaluated using the SDP in accordance with IMC 0609, Significance Determination Process, Attachment 0609.04, Initial Characterization of Findings, dated June 19, 2012, and Appendix A, The Significance Determination Process (SDP) for Findings At-Power, Exhibit 2, Mitigating Systems Screening Questions, dated June 19, 2012. The inspectors determined that the SR service water pumps remained operable but non-conforming for the time period in question as the UHS level had not approached 566 feet, 3 inches; therefore, the inspectors answered Yes to Mitigating Systems Screening Question 1, and screened the finding as having very low safety significance (Green). The inspectors concluded that there was no cross-cutting aspect with this finding because the failure occurred in 2008, and was not representative of current performance. |
Site: | Kewaunee ![]() |
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Report | IR 05000305/2013002 Section 1R04 |
Date counted | Mar 31, 2013 (2013Q1) |
Type: | NCV: Green |
cornerstone | Mitigating Systems |
Identified by: | NRC identified |
Inspection Procedure: | IP 71111.04 |
Inspectors (proximate) | K Riemer D Szwarc R Krsek K Barclay V Myers M Ziolkowski |
Violation of: | 10 CFR 50 Appendix B Criterion III, Design Control Technical Specification |
INPO aspect | |
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Finding - Kewaunee - IR 05000305/2013002 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Kewaunee) @ 2013Q1
Self-Identified List (Kewaunee)
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