05000282/FIN-2015003-02
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Finding | |
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| Title | Improper Operability Determination |
| Description | A finding of very low safety significance and an associated non-cited violation of Title 10, CFR, Part 50, Appendix B, Criterion V, Instructions, Procedures, and Drawings, was identified by the inspectors for the licensees failure to accomplish the requirements of procedure FP-OP-OL-01, Operability/Functionality Determination, Revision 14. Specifically, on August 9, 2015, following the discovery of a non-functional D6 building ventilation system and declaration of inoperability of Buses 26, 221, 222, and the D6 DG, the licensee improperly declared the affected TS SSCs operable and fully qualified without restoring functionality of the ventilation TS support system or implementing appropriate compensatory measures per the requirements of FP-OP-OL-01. The licensee entered the issue into the Corrective Action Program as CAP 01490027. The inspectors determined that the licensees failure to accomplish the requirements of procedure FP-OP-OL-01, Operability/Functionality Determination, Revision 14 was a performance deficiency. The performance deficiency was determined to be more than minor and a finding in accordance with IMC 0612, Appendix B, Issue Screening, because it was associated with the Mitigating Systems cornerstone attribute of equipment performance and affected the associated cornerstone objective to ensure the availability, reliability, and capability of systems that respond to initiating events to prevent undesirable consequences. Specifically, the licensee improperly declared the TS SSCs operable and fully qualified without restoring functionality of a TS support system or implementing appropriate compensatory measures. The inspectors applied IMC 0609, Attachment 4, Initial Characterization of Findings, to this finding. The inspectors answered No to all questions within Table 3, SDP Appendix Router, and transitioned to IMC 0609, Appendix A, The Significance Determination Process (SDP) for Findings At-Power. Per Exhibit 2, Mitigating Systems Screening Questions, the inspectors answered No to all questions under Section A, therefore the finding screened as very low safety significance (Green). The inspectors determined that the performance characteristic of the finding that was the most significant causal factor for the performance deficiency was associated with the cross-cutting aspect of Challenge the Unknown in the Human Performance cross-cutting area, involving individuals stopping when faced with uncertain conditions and evaluating and managing risk prior to proceeding. Specifically, the licensee did not properly evaluate and manage uncertain conditions associated with the ventilation system and impacts on TS SSC operability prior to proceeding with declaration of full qualification. |
| Site: | Prairie Island  |
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| Report | IR 05000282/2015003 Section 1R15 |
| Date counted | Sep 30, 2015 (2015Q3) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.15 |
| Inspectors (proximate) | B Palagi D Reeser K Riemer L Haeg N Valos P Laflamme R Edwards S Bell |
| Violation of: | 10 CFR 50 Appendix B Criterion V Technical Specification Technical Specification - Procedures |
| CCA | H.11, Challenge the Unknown |
| INPO aspect | QA.2 |
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Finding - Prairie Island - IR 05000282/2015003 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Prairie Island) @ 2015Q3
Self-Identified List (Prairie Island)
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