05000461/FIN-2016003-01
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Finding | |
|---|---|
| Title | Failure to Scope Fuel Building Ventilation Pressure Control into Maintenance Rule |
| Description | The inspectors identified a finding of very low safety significance and an NCV of 10 CFR 50.65 (b), Requirements for Monitoring the Effectiveness of Maintenance at Nuclear Power Plants, for the licensees failure to scope a non-safety related structure, system and component (SSC), whose function is used in one or more Emergency Operating Procedures (EOP) and whose failure could cause actuation of a safety-related system, into maintenance rule. Specifically, the licensee failed to scope the non-safety related fuel building pressure control function into their maintenance rule program. The licensee has entered this issue into their corrective action program as AR 02716300. The licensee is scoping the pressure control function of fuel building ventilation into maintenance rule. The inspectors determined that the licensees failure to scope a non-safety related system whose function is used in one or more EOPs and whose failure caused the actuation of a safety-related system into maintenance rule was a performance deficiency. The performance deficiency was determined to be more than minor, in accordance with IMC 0612, Power Reactor Inspection Reports, Appendix B, Issue Screening, dated September 7, 2012, because it affects the SSC and barrier performance attribute of the Barrier Integrity cornerstone and adversely affects the cornerstone objective to provide reasonable assurance that physical design barriers (fuel cladding, reactor coolant system, and containment) protect the public from radionuclide releases caused by accidents or events. 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 inspectors answered yes to the question does the finding only represent a degradation of the radiological barrier function provided for the control room, or auxiliary building, or spent fuel pool, SBGT system (BWR)?. The inspectors determined this finding affected the cross-cutting area of human performance, in the aspect of avoiding complacency, where individuals recognize and plan for the possibility of mistakes, latent
issues, and inherent risk, even while expecting successful outcomes because the licensee identified water intrusion of the fuel building pressure sensing line was a longstanding, latent, known problem and failed to recognize and appropriately challenge how the function was scoped into maintenance rule. (H.12) |
| Site: | Clinton  |
|---|---|
| Report | IR 05000461/2016003 Section 1R12 |
| Date counted | Sep 30, 2016 (2016Q3) |
| Type: | NCV: Green |
| cornerstone | Barrier Integrity |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.12 |
| Inspectors (proximate) | C Phillips G Edwards G Roach J Bozga J Wojewoda K Stoedter N Fields S Mischke W Schaup |
| Violation of: | 10 CFR 50.65 10 CFR 50.65(b) |
| CCA | H.12, Avoid Complacency |
| INPO aspect | QA.4 |
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Finding - Clinton - IR 05000461/2016003 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Clinton) @ 2016Q3
Self-Identified List (Clinton)
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