10 CFR 50 Appendix B, Criterion III, Design Control states, in part, that measures shall be established to assure that the applicable regulatory requirements and the design basis, for those structures systems, and components, are correctly translated into specifications, drawings, procedures, and instructions. Contrary to this, in April2007, Dominion removed relief valves 3CHS*RV8510A and B from the charging system alternate minimum recirculation flow path. This modification connected non-seismic American Society of Mechanical Engineers (
ASME) B31.1 piping to safety related
ASME Code Class 2 piping without an appropriate means of isolation. Dominion produced evaluations that demonstrated that the
ASME B31.1 piping would not rupture in a seismic event and entered the issue into their corrective action process, CR 333528. This finding is of very low safety significance because the finding is a design or qualification deficiency confirmed not to result in loss of operability or functionality
