05000461/FIN-2016001-01
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Finding | |
|---|---|
| Title | Failure to Identify a Degraded Safety-Related Support |
| Description | The inspectors identified a finding of very low safety significance and an associated non-cited violation of 10 CFR Part 50, Appendix B, Criterion XVI, Corrective Action, for the failure to identify a condition adverse to quality. Specifically, the licensee failed to identify that a safety-related support associated with control room ventilation B was degraded to the point it no longer conformed to the seismic analysis and required an evaluation to determine whether it was still capable of performing its safety function during a seismic event. This issue was entered into the licensees CAP as AR 2639317. The licensees immediate corrective actions included performing an evaluation that concluded the remaining three supports would be able to withstand the stresses imposed during a seismic event and creating an action to update the seismic calculation to incorporate the evaluation performed for the degraded support. The licensee also planned to re-apply a coating to the supports as well as research and install insulation that was more breathable to minimize moisture accumulation and preclude any further degradation. The inspectors determined that the failure to identify a condition adverse to quality in accordance with 10 CFR 50, Appendix B, Criterion XVI, Corrective Action, was more than minor because if left uncorrected it had the potential to lead to a more significant safety concern. Specifically, by failing to identify the support was degraded, and correct the condition, the loss of material due to corrosion could potentially progress to the point where the remaining supports would no longer be able to perform their safety function. Using IMC 0609, Attachment 4, Initial Characterization of Findings, and Appendix A, The Significance Determination Process for Findings at Power, issued June 19, 2012, the finding was screened against the Barrier Integrity Cornerstone and determined to be of very low safety significance because the finding did not represent a degradation of the barrier function of the control room against radiological conditions or a smoke or toxic atmosphere. The inspectors determined this finding affected the cross-cutting area of problem identification and resolution, in the aspect of evaluation, which states, The organization thoroughly evaluates issues to ensure that resolutions address causes and extent of conditions commensurate with their safety significance. Specifically, the licensee failed to thoroughly evaluate the issue identified by the inspectors and therefore did not recognize the degradation on the supports constituted a condition adverse to quality. (P.2) |
| Site: | Clinton  |
|---|---|
| Report | IR 05000461/2016001 Section 1R04 |
| Date counted | Mar 31, 2016 (2016Q1) |
| Type: | NCV: Green |
| cornerstone | Barrier Integrity |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.04 |
| Inspectors (proximate) | C Phillips E Sanchez-Santiago I Khan J Wojewoda K Stoedter M Jones M Learn S Mischke V Meghani W Schaup |
| Violation of: | 10 CFR 50 Appendix B Criterion XVI |
| CCA | P.2, Evaluation |
| INPO aspect | PI.2 |
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Finding - Clinton - IR 05000461/2016001 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Clinton) @ 2016Q1
Self-Identified List (Clinton)
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