The Nuclear Regulatory Commission (NRC) plans to issue a proposed rule maintaining the linear no-threshold (LNT) model for radiation exposure but will modify its implementation. This follows an executive order from May 2025 that criticized the current model for lacking scientific basis and directed NRC to reconsider its reliance on LNT and ALARA (As Low As Reasonably Achievable) standards. The proposed changes, including the removal of explicit ALARA language, are aimed at addressing perceived inefficiencies and economic costs linked to its application. While the NRC asserts that LNT remains the most suitable model for radiation protection, they acknowledge challenges in risk assessment from low-dose radiation. The proposed rule is scheduled for publication on July 15, with a 45-day public comment period to follow. Critics, including the Union of Concerned Scientists, argue that the proposed changes lack scientific grounding and may cater to industry interests rather than public health. The NRC emphasizes a shift towards a graded approach to dose management while maintaining existing radiation dose limits for workers and the public.
Fri, 10 Jul 2026 19:48:31 GMT | AIP.ORG