Building a More Coherent Regulatory Framework

The Nuclear Regulatory Commission’s proposed rule on Modernizing Reactor Licensing, Safety Oversight, and Siting Practices is one of the broadest pieces of its ongoing regulatory overhaul. Rather than creating a single new licensing pathway, the proposal reaches across the existing reactor regulatory framework, revising requirements for construction, design changes, quality assurance, codes and standards, analytical methods, reactor safety thresholds, fuel qualification, license duration, emergency preparedness, and siting. Many of these changes move in the right direction by replacing legacy categories and prescriptive requirements with more risk-informed, performance-based, and technology-inclusive approaches. BTI supports much of that direction, while recommending changes to ensure the individual reforms work coherently across licensing pathways and deliver meaningful flexibility in practice.

Across the broad package, BTI supports many of the NRC’s proposed reforms, including more flexible construction requirements, significance-based design change control, a graded alternative to traditional quality assurance requirements, greater use of risk-informed analytical methods, reforms to advanced fuel qualification, and more performance-based approaches to emergency preparedness and siting. BTI also recommends several changes to make those reforms more effective in practice. The NRC should make it easier to reuse prior technical determinations, allow lower-significance changes to proceed without unnecessary prior approval, grade quality assurance and emergency planning to actual safety significance, align definitions across regulations, and give applicants clearer pathways for repeat deployment. A modern regulatory system should learn from prior review rather than requiring the same technical case to be rebuilt for each plant or licensing pathway. 

These reforms must work as a coherent system. The NRC should preserve review where unresolved safety significance or uncertainty warrants it, remove duplicative requirements where it does not, and ensure that regulatory guidance does not recreate the same prescription the rule is intended to eliminate. Done well, the rule can make reactor licensing more flexible and predictable while maintaining the NRC’s core safety responsibilities.