05000482/FIN-2014002-04
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Finding | |
|---|---|
| Title | Licensee-Identified Violation |
| Description | A licensee-identified violation of 10 CFR 50, Appendix B, Criterion III, Design Control, was identified for failure to ensure that design basis requirements were maintained in response to a cave-in of required essential service water ground cover. Specifically, the licensee did not ensure that the qualified soil coverage around the train B essential service water duct bank was maintained when they re-covered the duct banks with an unapproved material. Contrary to these requirements, on January 20, 2014, upon a loss of essential service water duct bank soil coverage due to a cave-in, the licensee refilled the voided area with an unapproved material that was not qualified to withstand seismic and missile design basis accidents. The performance deficiency was failure to ensure the appropriateness of seismic and missile-qualified material. This violation was more than minor because it affected the protection against external factors and design control attributes of the Mitigating Systems Cornerstone objective to ensure the availability, reliability, and capability of systems that respond to initiating events to prevent undesirable consequences. Using the Inspection Manual Chapter 0609, Appendix A, Exhibit 4, External Events Screening Questions, the inspectors determined that the finding was of very low safety significance because it did not involve the total loss of any safety function that contributes to external event initiated core damage accident sequences. Since the finding was licensee-identified, no cross-cutting aspect is assessed. The finding was entered into the licensees corrective action program as Condition Report 79089. |
| Site: | Wolf Creek  |
|---|---|
| Report | IR 05000482/2014002 Section 4OA7 |
| Date counted | Mar 31, 2014 (2014Q1) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | Licensee-identified |
| Inspection Procedure: | |
| Inspectors (proximate) | C Peabody D Proulx D You G Callaway L Ricketson N O'Keefe P Hernandez P Jayroe R Stroble |
| Violation of: | 10 CFR 50 Appendix B Criterion III, Design Control |
| INPO aspect | |
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Finding - Wolf Creek - IR 05000482/2014002 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Wolf Creek) @ 2014Q1
Self-Identified List (Wolf Creek)
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