Advanced nuclear designs can now be licensed on their own terms

US nuclear regulators are fixing errors in new rules for commercial nuclear plants. This means new reactor designs will be judged on their actual risks and performance, not just old standards.

For 50 years, every new reactor design had to prove it was safe using methods written for 1960s light-water technology. This was an expensive, slow process that effectively blocked anything different. This change means a company with a genuinely different design can now be assessed on its own terms, potentially speeding up deployment of new nuclear technologies. It also clarifies how environmental reviews will apply to these new designs.