Wisconsin Electric Power Co. Wisconsin Electric Power Co. 2 Niagara Mohawk Power Corp. 1 Niagara Mohawk Power Corp. The more event reports filed by a reactor the less certain that the nuclear plant and its safety systems will function as designed.
Nuclear plants have between one and three reactors or units located at the same site.
For instance, the Cook nuclear plant consists of two reactors, Unit 1 and 2. The more than 500 event reports documented by Public Citizen all concern design basis issues. However, retracted does not mean there wasn't a problem. While failure to update the FSAR does not necessarily result in the reactor operating outside of its design basis, it does mean that these reactors have been making safety decisions based upon incomplete or inaccurate information. The design basis issues that eventually resulted in these shut downs were not identified by the utility.