The inspectors identified an
NCV of
10 CFR Part 50, Appendix B, Criterion XVI, Corrective Action, because Entergy did not complete a design control review for the station blackout (
SBO) fuel oil transfer system in a timely manner. Entergy extended the corrective action due date out to greater than a year from the discovery of the original condition. Entergy has increased the priority of this design review and captured this issue in condition report
CR-PNP-2013-6906. The performance deficiency was determined to be more than minor because it is associated with the design control attribute of the
Mitigating Systems cornerstone, and adversely affected the cornerstone objective to ensure the capability of systems that respond to
initiating events to prevent undesirable consequences. The failure to complete a timely design review of a credited support system for the onsite power safety function further extends the vulnerability of the safety function if the design review determines the system is inadequate. The inspectors used
IMC 0609.04, Phase 1 Initial Screening and Characterization of Findings, and
IMC 0609, Appendix A, Exhibit 2,
Mitigating Systems Screening. The finding was determined to be of very low safety significance (Green) because the finding was a design deficiency that did not result in the loss of system safety function or a loss of safety function of a single train for greater than its Technical Specification allowed outage time. The finding has a cross-cutting aspect in the area of Problem Identification and Resolution, Corrective Action Program, because Entergy did not take appropriate corrective actions to address a safety issue in a timely manner, commensurate with its safety significance.