05000285/FIN-2012011-01
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Finding | |
|---|---|
| Title | Inadequate operability determination for containment internal structures |
| Description | The NRC identified a non-cited violation of Title 10 CFR Part 50, Appendix B, Criterion V, Procedures, for the failure to perform an adequate operability determination as required by FCS Procedure NOD-QP-31, Operability Determination Process. Specifically, the licensees operability determination for non-conforming containment internal structures failed to address that a section of the containment internal structures exceeded the allowable working stress criteria. The licensee entered this issue into its corrective action program for evaluation and review. Inspectors found that the failure to perform an adequate operability determination to specifically evaluate that the containment internal structures did not meet the design code of record was a performance deficiency. This violation is more than minor because it is associated with the design control attribute of the barrier integrity cornerstone and has the potential to adversely affect the cornerstone objective. The inspectors used Inspection Manual Chapter 0609, Appendix G Shutdown Operations Significance Determination Process , to determine that the issue screened as very low safety significance (green) because it did not require a quantitative assessment per Checklist 4. This violation was determined to have a crosscutting aspect in the area of human performance associated with decision making H.1.b]. Specifically, the licensee did not use conservative assumptions in decision making and did not adopt a requirement to demonstrate that the proposed action is safe in order to proceed rather than a requirement to demonstrate that it is unsafe in order to disapprove the action. |
| Site: | Fort Calhoun  |
|---|---|
| Report | IR 05000285/2012011 Section 1R15 |
| Date counted | Dec 31, 2012 (2012Q4) |
| Type: | NCV: Green |
| cornerstone | Barrier Integrity |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.15 |
| Inspectors (proximate) | R Deese J Kirkland F Ramirez A Klett D Stearns M Hay J Brand C Alldredge J Wingebach W Smith |
| CCA | H.14, Conservative Bias |
| INPO aspect | DM.2 |
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Finding - Fort Calhoun - IR 05000285/2012011 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Fort Calhoun) @ 2012Q4
Self-Identified List (Fort Calhoun)
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