05000331/FIN-2010003-02
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Finding | |
|---|---|
| Title | Failure to Adequately Define Requirements and Prescribe a Procedure Appropriate for Plant Conditions |
| 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 for the licensees failure to prescribe a procedure appropriate to the circumstances when Surveillance Test Procedure (STP) 3.0.0-01, Attachment 3, Reactor Coolant Leakage, was implemented on March 15, 2010 to meet the Technical Specification (TS) definition of Identified Leakage. Specifically, STP 3.0.0-01 did not include a requirement to verify that leakage inside the drywell did not interfere with the leakage detection system prior to reclassifying Unidentified Leakage as Identified Leakage. The licensee entered the issue into their corrective action program as CR 568613. The inspectors determined that the issue was a performance deficiency because it was the result of the failure to meet a requirement, and the cause was reasonably within the licensees ability to foresee and correct, and should have been prevented. The performance deficiency was determined to be more than minor and a finding, because, if left uncorrected, the performance deficiency had the potential to lead to a more significance safety concern. The inspectors applied IMC 0609, Attachment 4, Phase 1 - Initial Screening and Characterization of Findings to this finding. Under Table 2, all Reactor Coolant System (RCS) Boundary issues that are not a result of a plant upset will be considered using the Initiating Events Cornerstone. Under Table 4a for the Initiating Events Cornerstone, the finding screened as very low safety significance (Green) because there was no actual RCS leakage that would have exceeded the TS limit, and the finding did not affect other mitigation systems resulting in a total loss of safety function. The inspectors determined that the contributing cause that provided the most insight into the performance deficiency affected the cross-cutting area of Problem Identification and Resolution, relating to the corrective action program components, and involving the aspect associated with the licensee assessing information from the corrective action program in aggregate to identify common cause problems. |
| Site: | Duane Arnold  |
|---|---|
| Report | IR 05000331/2010003 Section 1R18 |
| Date counted | Jun 30, 2010 (2010Q2) |
| Type: | NCV: Green |
| cornerstone | Initiating Events |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.18 |
| Inspectors (proximate) | K Riemer R Orlikowski M Mitchell R Baker R Murray A Scarbeary P Smagacz |
| CCA | P.4, Trending |
| INPO aspect | PI.4 |
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Finding - Duane Arnold - IR 05000331/2010003 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Duane Arnold) @ 2010Q2
Self-Identified List (Duane Arnold)
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