Nuclear Regulatory Commission July 12, 2023 – Federal Register Recent Federal Regulation Documents

The U.S. Nuclear Regulatory Commission (NRC) is issuing Revision 1 to Regulatory Guide (RG), 1.163, ``Performance-Based Containment Leak-Test Program.'' This RG provides guidance on an acceptable performance-based leak-test program and leakage rate test methods, procedures, and analyses that may be used to comply with ``Option BPerformance-Based Requirements'' in NRC regulations for primary reactor containment leakage testing for water-cooled power reactors.