05000305/FIN-2012005-02
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Finding | |
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Title | Emergency Diesel Generator Starting Air System Quality Classification Error |
Description | The inspectors identified a finding of very low safety significance and associated non-cited violation (NCV) 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 plant design change (DC) 10-011011, EDG Ventilation Air Supply Modification (Capital), the licensee failed to assign appropriate quality classifications to components that were relied upon to maintain a safety-related (SR) pressure boundary. As a short term corrective action, the licensee closed an upstream SR valve to restore the SR pressure boundary. The licensee entered the issue into their corrective action program (CAP) and assigned an apparent cause evaluation (ACE) to identify and asses the cause of the incorrect quality classification. 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 availability, reliability, and capability of systems that respond to initiating events to prevent undesirable consequences (i.e., core damage). Specifically, the licensee failed to assign the appropriate SR quality classification to components that were relied upon to maintain a SR pressure boundary. 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 licensee confirmed that the emergency diesel generator (EDG) starting air system remained operable but non-conforming; therefore, the inspectors answered Yes to Mitigating Systems Screening question number 1, and screened the finding as having very low safety significance (Green). This finding has a cross-cutting aspect in the area of human performance, work control, because the licensee did not maintain interfaces with offsite organizations, and communicate, coordinate, and cooperate with each other during activities in which interdepartmental coordination is necessary to assure plant and human performance. Specifically, during the licensees acceptance review of the offsite vendors work, the licensee questioned the new component qualifications; however, follow-up coordination and communications between the offsite vendor preparer and the licensee reviewer were not adequate to resolve the incorrect component classification. |
Site: | Kewaunee |
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Report | IR 05000305/2012005 Section 1R04 |
Date counted | Dec 31, 2012 (2012Q4) |
Type: | NCV: Green |
cornerstone | Mitigating Systems |
Identified by: | NRC identified |
Inspection Procedure: | IP 71111.04 |
Inspectors (proximate) | J Beavers V Myers K Carrington D Mcneil R Winter K Riemer J Jandovitz C Moore J Laughlin R Krsek K Barclay |
CCA | H.5, Work Management |
INPO aspect | WP.1 |
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Finding - Kewaunee - IR 05000305/2012005 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Kewaunee) @ 2012Q4
Self-Identified List (Kewaunee)
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