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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.

MACCSimize Safety

Office of Nuclear Regulatory Research

The MACCS consequence analysis code simulates the offsite consequences of radioactive releases to the environment. MACCS is a powerful tool that informs the development of regulations and guidance for operating reactors and advanced nuclear technologies. This exhibit highlights the importance of consequence analyses in safety regulation, demonstrating how the MACCS code is used to protect people and the environment. It also showcases the staff's recent code development efforts to extend the NRC's modeling and simulation capabilities for accident source terms and consequence analysis for advanced nuclear technologies.

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Page Last Reviewed/Updated Tuesday, August 13, 2024