05000483/FIN-2011007-05
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Finding | |
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| Title | Failure to Establish Preventative Maintenance Schedule to Protect Safety-Related Equipment from Undetected Degraded Conditions |
| Description | The inspectors identified a noncited violation of Technical Specification 5.4.1 for a failure to adequately establish and implement procedures required by Regulatory Guide 1.33, Appendix A, Section 9, Procedures for Performing Maintenance. Specifically, the preventative maintenance schedule to perform periodic lube oil analysis established an 18 month frequency without adequate justification resulting in a failure to promptly detect bearing degradation in the turbine-driven auxiliary feedwater pump. The licensee evaluated this issue in Callaway Action Request 201101042 and has corrective actions to review the lube oil analysis frequency and reduce it to at least a 9 month frequency. This finding is more than minor because if left uncorrected it has the potential to lead to a more significant safety concern. Specifically, the failure to adequately evaluate and determine an appropriate lube oil monitoring schedule resulted in the failure to promptly detect a degraded bearing in the turbine-driven auxiliary feedwater pump affecting the equipment performance attribute of the Mitigating Systems Cornerstone and could have impacted the availability of mitigating equipment if left uncorrected. The finding was evaluated using Manual Chapter 0609.04, Phase 1 - Initial Screening and Characterization of Findings, and determined to be of very low safety significance since the as-found condition of the degraded bearing would not have caused a loss of system safety function. The finding has a cross-cutting aspect in the area of human performance associated with the decision making component, in that, the licensee failed to use conservative assumptions in the decision to extend the turbine-driven auxiliary feedwater pump lube oil monitoring interval to 18 months. |
| Site: | Callaway  |
|---|---|
| Report | IR 05000483/2011007 Section 4OA5 |
| Date counted | Jun 30, 2011 (2011Q2) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 93812 |
| Inspectors (proximate) | G Miller J Polickoski M Runyan M Chambers L Micewski D Dumbacher |
| Violation of: | Technical Specification |
| CCA | H.14, Conservative Bias |
| INPO aspect | DM.2 |
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Finding - Callaway - IR 05000483/2011007 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Callaway) @ 2011Q2
Self-Identified List (Callaway)
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