Are you familiar with the instrumentation on nuclear plants? I can’t imagine there are high tens of thousands or hundreds of thousands of variables let alone se

Are you familiar with the instrumentation on nuclear plants? I can’t imagine there are high tens of thousands or hundreds of thousands of variables let alone sensors to be monitored. On the hydro plants I work on there are about 1000 variables per turbine generator unit and another 1000 for the substation and river system that are centrally recorded.