As the NRC was preparing NUREG-1437, Supplement 56, "Generic Environmental Impact Statement for License Renewal of Nuclear Plants Supplement 56 Regarding Fermi Nuclear Power Plant", it solicited comments on the proposed report. In response to comments specifically mentioning the CRAC-II study, the NRC wrote: "The U.S. Nuclear Regulatory Commission has devoted considerable research resources, both in the past and currently, to evaluating accidents and the possible public consequences of severe reactor accidents. The NRC's most recent studies have confirmed that early research into the topic led to extremely conservative consequence analyses that generate invalid results for attempting to quantify the possible effects of very unlikely severe accidents. In particular, these previous studies did not reflect current plant design, operation, accident management strategies or security enhancements. They often used unnecessarily conservative estimates or assumptions concerning possible damage to the reactor core, the possible
radioactive contamination that could be released, and possible failures of the reactor vessel and containment buildings. These previous studies also failed to realistically model the effect of emergency preparedness. The NRC performed a state-of-the-art assessment of possible severe accidents as part of its ongoing effort to evaluate the consequences of such accidents." This study was published as "NUREG–1935, State-of-the-Art Reactor Consequence Analyses Report" in 2012. ==See also==