05000482/FIN-2009002-01
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Finding | |
|---|---|
| Title | Untimely corrective actions result in room temperature below boric acid solubility limit |
| Description | The inspectors identified a finding for allowing low room temperature to cause a boric acid flow path to be inoperable. The inspectors reviewed a Performance Improvement Request from 2005, which identified that boric acid could decrease below its limits if the room cooler was started while lake temperature was low which would render the system inoperable. The inspectors reviewed operator logs of safety injection Room A temperature data and found an instance where room temperature had decreased below the solubility limit for boric acid which had not been noted by operators. The licensee entered this issue into their corrective action programs as Condition Reports 2009-00516 and 2009-0145. The failure to implement the heat tracing corrective action within 3 years to maintain the boric acid injection piping operable during the winter is a performance deficiency. The inspectors determined that this finding was more than minor because this issue aligned with Inspection Manual Chapter 0612, Appendix E, example 2.f because the heat tracing was required by Condition Reports 2005-3461 and 2007-2472 but was not installed and the room temperature dropped below the boron solubility limit. The inspectors evaluated the significance of this finding using Phase 1 of Inspection Manual Chapter 0609, Appendix G, Attachment 1, Checklist 3, and determined that the finding was of very low safety significance because Wolf Creek maintained shutdown margin in compliance with its Technical Specifications. No violation of regulatory requirements occurred. The inspectors determined that this finding has a cross cutting aspect in the area of human performance associated with the resources component because Wolf Creek did not maintain long term plant safety by not correcting this long term (3 years) equipment issue and its compensatory measure with the boric acid system H.1.a] (Section 1R01) |
| Site: | Wolf Creek  |
|---|---|
| Report | IR 05000482/2009002 Section 1R01 |
| Date counted | Mar 31, 2009 (2009Q1) |
| Type: | Finding: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.01 |
| Inspectors (proximate) | B Tindell C Long M Hayes P Elkmann P Jayroe V Gaddy |
| CCA | H.13, Consistent Process |
| INPO aspect | DM.1 |
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Finding - Wolf Creek - IR 05000482/2009002 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Wolf Creek) @ 2009Q1
Self-Identified List (Wolf Creek)
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