The inspectors identified a Green
NCV of
10 CFR Part 50, Appendix B, Criterion V, Instructions, Procedures, and Drawings, for
Vermont Yankees failure to routinely perform procedurally required engineering evaluations for scaffold bracing attached to pipe supports. Specifically,
Vermont Yankee failed to perform engineering evaluations on 27 out of 32 scaffolds with horizontal bracing attached to safety related pipe supports. Subsequently, each scaffold was evaluated and documented by
Vermont Yankee engineering and no immediate safety issues were found. This
NCV has been entered into the
Vermont Yankee corrective action program (
CAP). The performance deficiency was more than minor because if left uncorrected, the performance deficiency had the potential to
lead to a more significant safety concern. Specifically, installing scaffold bracing on pipe supports without engineering approval could place a pipe support in an unanalyzed seismic condition, which could
lead to failure in a seismic event. The finding had a cross-cutting aspect in the Work Practices component of the Human Performance cross-cutting area because
Vermont Yankee did not implement adequate management oversight of contractor work activities regarding scaffold procedural compliance.
H.4(c). (Section 4OA2)
