As of 2011, according to the NRC, there had been progress on the issue and the problems were not considered a threat to the safety of plant workers or the public.
There had been progress on the issue. This was according to the NRC. This was as of 2011. The problems were not considered a threat to the safety of plant workers. This was as of 2011. The problems were not considered a threat to the safety of the public. This was as of 2011.