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The U.S. Nuclear Regulatory Commission (NRC) has proposed a new interpretation of security regulations for nuclear power plants. This interpretation would allow these facilities to integrate law enforcement responses into their physical protection programs, through a concept called Security Bounding Time (SBT). The goal is to enhance flexibility and site security while ensuring coordination with law enforcement agencies during potential security incidents. The NRC is inviting public comments on the proposal and plans to hold a public meeting to discuss it further.

The U.S. Nuclear Regulatory Commission (NRC) has issued a new version, Revision 4, of Regulatory Guide (RG) 1.32 and introduced a new guide, RG 1.238, concerning the standards for power systems in nuclear power plants. RG 1.32 details how to design, operate, and test electric power systems in nuclear plants, while RG 1.238 focuses on protecting specific types of power systems and equipment. These guides provide methods approved by the NRC for meeting regulations, and they incorporate updated standards from the Institute of Electrical and Electronics Engineers (IEEE). The issuance of these guides does not enforce any new regulatory requirements on licensees.

The U.S. Nuclear Regulatory Commission (NRC) has issued three Interim Staff Guidance (ISG) documents to update the aging management criteria for mechanical, structural, and electrical components in their subsequent license renewal (SLR) guidance documents. These ISGs update NUREG-2191 and NUREG-2192, which help with the preparation and review of license renewal applications for nuclear power plants. The revisions include updates to recommended aging management programs, changes to review items, and new guidance sections. These guidelines are aimed at clarifying the existing instructions and easing the application process for SLRs.