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10 CFR Part 50, Appendix B, Criterion XVI, Corrective Action, requires, in part, that measures shall be established to assure that
conditions adverse to quality are promptly identified and corrected. Contrary to the above, though the licensee identified a potential vulnerability to raw water pumps from a missile hazard striking diesel driven fire pump
FP-1B or associated piping during review of missile hazards during the 2013
tornado missile project, the licensee failed to evaluate this condition or specify a modification to the plant to protect the raw water pumps at that time. This was discovered on August 25, 2016, by the licensee during a design review. This finding is of very low safety significance (Green) considering compensatory measures that were put in place to disable pump
FP-1B and isolate associated piping when severe weather is forecast and the very low probability of the postulated event. This issue was entered into the licensees corrective action program as CR 2016-06972.
