05000255/FIN-2015012-02
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Finding | |
|---|---|
| Title | Operability Evaluation Not Performed in Accordance with Station Procedure |
| Description | An NRC-identified finding of very low safety significance and an associated NCV of Title 10 of the Code of Federal Regulations (CFR), Part 50, Appendix B, Criterion V, Instructions, Procedures and Drawings, was identified for the licensees failure to adhere to the site procedure for performing operability determinations during the evaluation of a nonconforming condition associated with nine primary coolant system (PCS) welds susceptible to primary water stress corrosion cracking (PWSCC). The licensees corrective actions for this finding included completion of an operability determination in accordance with the site operability procedure to include a new analysis which demonstrated the AMSE Code acceptance criteria would continue to be met for the affected welds during the remainder of the operating cycle. The licensee entered the failure to comply with the operability procedure into the CAP (CR-PLP-2015-03434). This finding was determined to be more than minor because it was similar to the not minor if aspect of Example 3j in IMC 0612, Appendix E, Example of Minor Issues, because the errors in operability evaluation CA-1 of CR-PLP-2015-01239 resulted in a condition in which there was a reasonable doubt on the operability of the systems and components that were the subject of the evaluation and dissimilar from the minor because aspect of this example since the impact of the errors on the operability evaluation was not minimal. In addition, the performance deficiency was determined to be more than minor because it was associated with the Initiating Event Cornerstone attribute of Equipment Performance and adversely affected the Cornerstone objective to limit the likelihood of events that upset plant stability and challenge critical safety functions. The inspectors evaluated the finding in accordance with IMC 0609, Significance Determination Process, Attachment 0609.04, Phase 1 Initial Screening and Characterization of Findings, Table 3, for the Initiating Events Cornerstone and IMC 0609, Appendix A, The SDP for Findings At-Power. Because the licensee was able to demonstrate operability of the nine PCS welds susceptible to PWSCC, the inspectors answered No to questions A.1 and A.2, of Exhibit 1, Initiating Events Screening Questions, identified in Appendix A of IMC 609 and, as a result, the finding screened as having very low safety significance (Green). This finding has a crosscutting aspect in Evaluation for the Problem Identification and Resolution cross-cutting area since the licensee failed to thoroughly evaluate the impact on operability of a nonconforming condition associated with nine PCS welds susceptible to PWSCC. |
| Site: | Palisades  |
|---|---|
| Report | IR 05000255/2015012 Section 1R15 |
| Date counted | Sep 30, 2015 (2015Q3) |
| Type: | NCV: Green |
| cornerstone | Initiating Events |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.15 |
| Inspectors (proximate) | A Nguyen D Hills M Holmberg |
| Violation of: | 10 CFR 50 Appendix B Criterion V |
| CCA | P.2, Evaluation |
| INPO aspect | PI.2 |
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Finding - Palisades - IR 05000255/2015012 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Palisades) @ 2015Q3
Self-Identified List (Palisades)
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