American Society of Mechanical Engineers 2019-2020 Code Editions

The U.S. Nuclear Regulatory Commission (NRC) is amending its regulations to incorporate by reference the 2019 Edition of the American Society of Mechanical Engineers Boiler and Pressure Vessel Code, Section III, Division 1, and Section XI, Division 1, and the 2020 Edition of the American Society of Mechanical Engineers Operation and Maintenance of Nuclear Power Plants, Division 1: OM Code: Section IST, for nuclear power plants. The NRC is also incorporating by reference the American Society of Mechanical Engineers OM Code Case OMN-28, ``Alternative Valve Position Verification Approach to Satisfy ISTC-3700 for Valves Not Susceptible to Stem-Disk Separation''; the 2011 Addenda to ASME NQA-1-2008, ``Quality Assurance Requirements for Nuclear Facility Applications'' (ASME NQA-1b-2011); and the 2012 and 2015 Editions of ASME NQA-1, ``Quality Assurance Requirements for Nuclear Facility Applications.'' This action is in accordance with the NRC's policy to periodically update the regulations to incorporate by reference new editions of the American Society of Mechanical Engineers Codes and is intended to maintain the safety of nuclear power plants and to make NRC activities more effective and efficient.