05000445/FIN-2008005-02
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Finding | |
|---|---|
| Title | Failure to Adequately Evaluate Material Condition Following a Boric Acid Leak |
| Description | The inspectors identified a noncited violation of 10 CFR Part 50, Appendix B, Criterion V, for the licensees failure to follow procedures that required an evaluation and corrective actions in response to the effects of a borated water leak on primary coolant pressure boundary components. Corrective actions described as Fix Now were identified as boric acid deposits or anticipated accumulation of boric acid deposits which directly impact a carbon steel pressure boundary components or subcomponents and could result in increased corrosion rates. The inspectors identified that the inadequate evaluation and corrective actions resulted in the increased corrosion rate. The licensee entered the finding into their corrective action program as Smart Form SMF-2008-003194. The finding was more than minor using NRC Inspection Manual Chapter 0612, Appendix E, Examples of Minor Issues, Example 4.a, because the inadequate evaluation led to the reactor vessel nozzle being adversely affected, in that the corrosion degraded the material condition of the carbon steel portions. The finding was determined to have very low safety significance because assuming worst case degradation, the finding would not result in exceeding the Technical Specification limit for reactor coolant system leakage or affect other mitigation systems resulting in a total loss of their safety function. The cause of the finding was related to the Human Performance crosscutting component of Decision Making in that the licensee failed to use conservative assumptions for decision making when evaluating degraded and nonconforming condition |
| Site: | Comanche Peak  |
|---|---|
| Report | IR 05000445/2008005 Section 1R08 |
| Date counted | Dec 31, 2008 (2008Q4) |
| Type: | NCV: Green |
| cornerstone | Initiating Events |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.08 |
| Inspectors (proximate) | L Ricketson J Dixon K Clayton B Tharakan L Carson G Replogle B Tindell M Bloodgood D Reinert G Tutak J Kramer N Okonkwo N Hernandez |
| CCA | H.14, Conservative Bias |
| INPO aspect | DM.2 |
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Finding - Comanche Peak - IR 05000445/2008005 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Comanche Peak) @ 2008Q4
Self-Identified List (Comanche Peak)
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