Engineering360: "Quality Defects Will Delay This Nuclear Unit's Startup"

"... The utility went on to inspect 150 welds..."

...which resulted in more than 1/3 being slated to be redone.

That is a very high rate of unacceptable work. Problems with welds should be caught and corrected as the fabrication is progressing. It seems like this could be indicative of more widespread problems.

I doubt there are only 150 welds in the entire primary and secondary. Those also aren't likely to be the only place where weld quality is of critical importance.

Sounds like further inspection might be called for.