The team identified a finding of very low safety significance involving a
NCV of
10 CFR50, Appendix B, Criterion III, Design Control, for the licensees failure to assure that the applicable design bases were correctly translated into the in-service test (
IST) acceptance criteria for safety-related motor operated valves (
MOVs). Specifically, the licensees testing did not account for test inaccuracies associated with
limit switch actuation or minimum
EDG frequency into
IST stroke time testing. The licensee entered this deficiency into their
CAP for resolution. The finding was determined to be more than minor because it was associated with the
Mitigating Systems cornerstone attribute of design control and affected the cornerstone objective of ensuring the capability of systems that respond to
initiating events to prevent undesirable consequences. Not accounting for test inaccuracies and
EDG under frequency, the
IST did not ensure that
MOV isolation times referenced in the
Updated Final Safety Analysis Report (
UFSAR) were verified by testing. The team assessed this finding for significance in accordance with the
SDP for Reactor Inspection Findings for At-Power Situations, and determined that it was of very low safety significance (Green), in that no actual loss of safety system function was identified. No cross-cutting aspect was identified because the performance deficiency did not reflect current performance
