05000331/FIN-2012003-02
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Finding | |
|---|---|
| Title | Inadequate Testing Following Maintenance on Secondary Containment Isolation Dampers |
| Description | A finding of very low safety significance and associated NCV of 10 CFR Part 50, Appendix B, Criterion V, Instructions, Procedures, and Drawings, was identified by the inspectors on May 31, 2012, for the licensees failure to conduct post-maintenance testing in accordance with Maintenance Directive (MD) 024, Post-Maintenance Testing Program. Specifically, post-maintenance testing on secondary containment isolation damper 1V-AD-17A3 was not adequate to verify the ability of the secondary containment to perform its intended function and it did not verify that no new problems were created (interference with damper 1V-AD-17B3) as a result of the maintenance performed. The licensee entered this issue into the CAP as condition report (CR) 01771837 and was in the process of evaluating the adequacy of maintenance practices and formulating corrective actions at the end of the inspection period. The inspectors determined that failing to perform adequate post-maintenance testing was a performance deficiency because it was the result of the licensees failure to meet a procedural requirement, and the cause was reasonably within the licensees ability to foresee and correct and should have been corrected. The performance deficiency was determined to be more than minor and a finding because it was associated with the structure, system, and component (SSC) and barrier performance attribute of the Barrier Integrity Cornerstone, and adversely affected the cornerstone objective of providing reasonable assurance that physical design barriers (secondary containment) protect the public from radionuclide releases caused by accidents or events. The inspectors evaluated the finding in accordance with IMC 0609.04, Table 4a. Because the finding only represented a degradation of the radiological barrier function provided for the secondary containment (Question 1 under the Containment Barrier column), the finding screened as very low safety significance (Green). The inspectors determined that the contributing cause that provided the most insight into the performance deficiency was associated with the cross-cutting aspect of Human Performance, having Work Control components, and involving the licensee appropriately planning and coordinating work activities by incorporating risk insights. |
| Site: | Duane Arnold  |
|---|---|
| Report | IR 05000331/2012003 Section 4OA3 |
| Date counted | Jun 30, 2012 (2012Q2) |
| Type: | NCV: Green |
| cornerstone | Barrier Integrity |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71153 |
| Inspectors (proximate) | G O'Dwyer J Draper L Haeg M Jones M Mitchell M Ring N Feliz Adorno R Murray S Bell |
| CCA | H.5, Work Management |
| INPO aspect | WP.1 |
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Finding - Duane Arnold - IR 05000331/2012003 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Duane Arnold) @ 2012Q2
Self-Identified List (Duane Arnold)
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