NRC said the rule makes reviews more efficient by allowing the agency to build on existing technical evidence from the Department of Energy (DoE) or Department of War (DoW) while independently evaluating the safety of proposed commercial projects.
It’s the first major change to NRC reactor regulations finalized under Executive Order 14300, which directs the agency to accelerate the licensing of safe nuclear technologies.
The final rule amends 10 CFR Parts 50 and 53. This establishes a framework for using information from DoE and DoW demonstration programs in commercial licensing applications.
Must Show Differences
Applicants must still demonstrate compliance with NRC requirements. They must identify differences between a demonstration reactor and the proposed commercial project. They must include differences in design, site or hazards that could affect safety.
NRC proposed the rule April 2, and received 136 unique comment submissions.
In response, the final rule clarifies applicants remain responsible for meeting all applicable statutory and regulatory requirements. They must also provide examples of information to support an application.
The final rule will take effect 30 days after publication in the Federal Register expected next week. A detailed response to public comments will be available through the NRC’s website and the Agencywide Documents Access and Management System (ADAMS) at ML26282A996.
Click here to review the new rule.
Here is more information on navigating the reactor licensing process.

