05000498/FIN-2016007-09
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Finding | |
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| Title | Failure to Ensure Adequate Design Control Measures in Place to Mitigate a Loss of Normal Feedwater Flow Event |
| Description | The team identified a Green, non-cited violation of 10 CFR Part 50, Appendix B, Criterion III, Design Control, which states, in part, that Measures shall be established to assure that applicable regulatory requirements and the design basis...for those structures, systems, and components to which this appendix applies are correctly translated into specifications, drawings, procedures and instructions. Specifically, since August 1, 2001, the licensee failed to translate into procedures that a loss of normal feedwater flow event would be mitigated consistent with the licensees design basis assumptions. In response to this issue, the licensee initiated actions to establish interim emergency operating procedure directions for the licensed operators to ensure that credited safety-related equipment is used with priority in the event if this were to occur at the plant. The emergency operating procedure is being revised to ensure permanent corrective action is taken. This finding was entered into the licensee's corrective action program as Condition Report CR 16-1694. The team determined that the failure to establish measures to assure that the design bases was correctly translated into procedures and instructions was a performance deficiency. The performance deficiency was determined to be more than minor, and therefore a finding, because it was associated with the Mitigating Systems cornerstone attribute of procedure quality, and adversely affected the cornerstone objective to ensure the availability, reliability, and capability of systems that respond to initiating events to prevent undesirable consequences. In addition, if left uncorrected, the performance deficiency would have the potential to lead to a more significant safety concern. Specifically, if the licensee used the procedure to mitigate a loss of normal feedwater flow event, the licensee may place the plant in an unanalyzed condition. In accordance with Inspection Manual Chapter 0609, Appendix A, The Significance Determination Process (SDP) for Findings At-Power, dated June 19, 2012, Exhibit 2, Mitigating Systems Screening Questions, the issue screened as having very low safety significance (Green) because it was a design or qualification deficiency that did not represent a loss of operability or functionality. The team determined that this finding did not have a cross-cutting aspect because the most significant contributor did not reflect present licensee performance. |
| Site: | South Texas  |
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| Report | IR 05000498/2016007 Section 1R21 |
| Date counted | Mar 31, 2016 (2016Q1) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.21M |
| Inspectors (proximate) | C Baron C Stott G Gardner J Kirkland M Williams S Hedger T Fanelli T Farnholtz |
| Violation of: | 10 CFR 50 Appendix B Criterion III, Design Control |
| INPO aspect | |
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Finding - South Texas - IR 05000498/2016007 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (South Texas) @ 2016Q1
Self-Identified List (South Texas)
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