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Due to a lapse in appropriations, the NRC has ceased normal operations. However, excepted and exempted activities necessary to maintain critical health and safety functions—as well as essential progress on designated critical activities, including those specified in Executive Order 14300—will continue, consistent with the OMB-Approved NRC Lapse Plan.

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The SOARCA Process

Step 1: Selecting Accident Scenarios to Model Step 3: Modeling Offsite Release of Radioactive MaterialStep 4: Modeling Emergency ResponseStep 5: Modeling Health EffectsStep 2: Modeling Onsite Accident

Overall, the State-of-the-Art Reactor Consequence Analyses (SOARCA) process includes five general steps, as illustrated in the flowchart to the right. See the following pages for discussions of the methods and rationale that the project team uses in each step to determine the realistic consequences of the select severe accident scenarios:

Page Last Reviewed/Updated Tuesday, August 12, 2025

Page Last Reviewed/Updated Tuesday, August 12, 2025