NANO Nuclear sees new NRC rules as aligned with microreactor plans

NANO Nuclear Energy Inc. (NASDAQ: NNE) said new Nuclear Regulatory Commission frameworks could benefit future deployment of its KRONOS MMR microreactor technology, according to a company statement.

The NRC finalized Part 53, a risk-informed licensing framework effective April 29, 2026, and proposed Part 57, a rule specifically for microreactors. Both rules stem from Congressional direction under the Nuclear Energy Innovation and Modernization Act of 2019.

Part 53 establishes an optional licensing pathway that complements existing frameworks under Parts 50 and 52. The rule aims to provide more flexible licensing approaches for advanced reactor designs.

The proposed Part 57 rule targets microreactors specifically and would introduce streamlined processes for factory fabrication, modular deployment, and standardized design approvals. The rule includes provisions for combined construction and operating licenses, reduced emergency planning requirements, and manufacturing licenses for pre-deployment fabrication.

NANO Nuclear expects the new frameworks would apply more to subsequent commercial deployments rather than initial projects. The company's planned first KRONOS MMR deployment at the University of Illinois Urbana-Champaign will proceed under the existing Part 50 research reactor licensing framework.

"We commend the NRC for advancing both the final Part 53 rule and the proposed Part 57 framework," said James Walker, Chief Executive Officer. "These developments reflect a clear shift toward risk-informed, performance-based approaches that recognize the evolving characteristics and benefits of next-generation reactor designs."

The company is evaluating both regulatory frameworks and engaging with the Nuclear Energy Institute and other industry stakeholders. Part 57 is expected to be published in the Federal Register in 2026 for public comment.

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