⚛️NRC Issues Regulatory Guide for High Temperature Reactors Compliance
The U.S. Nuclear Regulatory Commission (NRC) is issuing Revision 3 to Regulatory Guide (RG), 1.87, "Acceptability of ASME Code, Section III, Division 5, "High Temperature Reactors."" This regulatory guide (RG) describes an approach that is acceptable to the staff of the NRC to assure the mechanical/structural integrity of components that operate in elevated temperature environments and that are subject to time-dependent material properties and failure modes. It endorses, with exceptions and limitations, the American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel (BPV) Code (ASME Code) Section III, "Rules for Construction of Nuclear Facility Components," Division 5, "High Temperature Reactors," and several related Code Cases.
Learn More☢️NRC Reopens Comment Period for High Temperature Reactors Guide
On December 13, 2024, the U.S. Nuclear Regulatory Commission (NRC) solicited comments on draft Regulatory Guide (DG) DG-1436, "Acceptability of ASME Code, Section III, Division 5, `High Temperature Reactors.' " The public comment period closed on January 27, 2025. The NRC has decided to reopen the public comment period to allow more time for members of the public to develop and submit their comments.
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