05000331/FIN-2009002-04
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Finding | |
|---|---|
| Title | Failure to Consider Design Basis Load in Evaluation for Continued Operation |
| Description | A finding of very low safety significance and associated NCV of 10 CFR Part 50, Appendix B, Criterion III, Design Control, was identified by the inspectors for the failure to verify the adequacy of the methodology and design inputs used to support licensee decisions to accept non-conforming systems, structures, and components for continued operation. The licensee entered this issue into its CAP and was able to demonstrate the Primary Containment system and piping subsystems attached to Drywell penetrations to be operable during design basis accident conditions. The finding was determined to be more than minor because the omission of a design basis load in engineering evaluations used to justify continued operation resulted in a condition where there was reasonable doubt regarding the operability of the Primary Containment system and piping subsystems attached to Drywell penetrations during accident conditions. The inspectors determined the finding was of very low safety significance because it was a design deficiency that did not result in actual loss of safety function. This finding did not have a cross-cutting aspect |
| Site: | Duane Arnold  |
|---|---|
| Report | IR 05000331/2009002 Section 1R15 |
| Date counted | Mar 31, 2009 (2009Q1) |
| Type: | NCV: Green |
| cornerstone | Barrier Integrity |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.15 |
| Inspectors (proximate) | M Holmberg K Riemer R Orlikowski R Baker J Neurauter T Go A Scarbeary |
| INPO aspect | |
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Finding - Duane Arnold - IR 05000331/2009002 | ||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Duane Arnold) @ 2009Q1
Self-Identified List (Duane Arnold)
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