The Nuclear Regulatory Commission has issued a final rule establishing an explicit option for commercial reactor applicants to reference relevant information from facilities previously authorized by the Energy or Defense departments, tested and shown able to function safely. The NRC says applicants must still meet its requirements and undergo independent review.
The rule is scheduled to be published in the Federal Register on October 26. It changes provisions in the agency's reactor-licensing frameworks, rather than granting a license to a particular reactor.
What applicants may use
The amendments allow applicants to use relevant information from qualifying prior federal authorizations to support demonstrations that reactor designs can perform required safety functions. A reference must identify how attributes of the authorization satisfy NRC regulations.
The NRC's discussion says applicants must address how changes in a design, its functionality, hazards, siting information or underlying safety assumptions meet applicable requirements. A prior authorization may not cover the full commercial configuration or all the analysis an NRC application requires.
The notice uses Department of War in its discussion but retains Department of Defense in the regulatory amendments to avoid inconsistency with existing regulations.
Independent review remains
The agency says the rule neither delegates its evaluation functions to another department nor allows it to forgo independent review. Applicants must justify the relevance and applicability of the information they reference. That justification may let the NRC tailor the focus and depth of its review.
The NRC expects savings for applicants and the agency, but says it could not usefully quantify those potential savings. They depend partly on how well earlier reviews match NRC requirements and on differences in design or siting.
When the rule takes effect
The public-inspection copy sets effectiveness as '[INSERT DATE 30 DAYS AFTER DATE OF PUBLICATION IN THE FEDERAL REGISTER]'. By this desk's count, scheduled October 26 publication makes that November 25; the Register's documents API already supplies November 25. This is an effective date, not a new comment deadline.
The notice directs readers seeking the underlying public materials to Regulations.gov docket NRC-2025-1503 and the NRC's ADAMS document collection.