05000305/FIN-2012008-01
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Finding | |
|---|---|
| Title | Battery Rack Configuration Not In Accordance With Design Basis |
| Description | The inspectors identified a finding of very low safety significance (Green) and an associated non-citied violation of 10 CFR Part 50, Appendix B, Criterion III, Design Control, because the licensee failed to ensure that the configuration of the safeguards battery racks was in accordance with the design basis Seismic Category I qualification. Specifically, the Seismic Category I qualification specified that the battery rack end rails be snug against the battery. The inspectors found gaps greater than 1/8 inch and up to approximately 3/8 inch. The vendor instructions directed that the rails should be within 1/8 inch. The licensee entered this into the Corrective Action Program as CR489958 and CR487875 and took short term corrective actions to adjust the battery rack end gaps to within 1/8 inch, and assigned an apparent cause evaluation, which was not complete at the end of the inspection period. The finding was determined to be more than minor because the finding was associated with the Mitigating Systems Cornerstone attribute of protection against external factors and affected the cornerstone objective to ensure the availability, reliability, and Corrective Action Programability of systems that respond to initiating events to prevent undesirable consequences (i.e., core damage). Specifically, the licensee failed to ensure that the batteries were constrained from sliding along the rack to avoid over stressing the battery terminals, battery casing, or rack ends. The inspectors determined the finding could be evaluated using the Significance Determination Process in accordance with Inspection Manual Chapter 0609, Significance Determination Process, Attachment 0609.04, Initial Characterization of Findings, dated June 19, 2012, and Appendix A, The Significance Determination Process for Findings At-Power, dated June 19, 2012, Exhibit 2, Mitigating Systems Screening Questions. The inspectors answered Yes to question 1, and screened the finding as having very low safety significance (Green). The inspectors did not assign a cross-cutting aspect because the installation of the battery racks occurred in 2008, and was not representative of current performance. |
| Site: | Kewaunee  |
|---|---|
| Report | IR 05000305/2012008 Section 4OA2 |
| Date counted | Sep 30, 2012 (2012Q3) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71152 |
| Inspectors (proximate) | R Winter K Riemer R Ng J Neurauter K Barclay |
| INPO aspect | |
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Finding - Kewaunee - IR 05000305/2012008 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Kewaunee) @ 2012Q3
Self-Identified List (Kewaunee)
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