Technical Review of the 2017 Edition of ASME Code, Section III, Division 5, “High Temperature Reactors”: Draft Report For Comment (NUREG-2245)

This publication has been issued for public comment. Comments will be accepted until October 19, 2021. To submit comments, please see Docket ID Number NRC-2021-0117

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Publication Information

Manuscript Completed: June 2021
Date Published: August 2021

Prepared by:
A. Yeshnik
J. Poehler
A. Tsirigotis
M. Gordon
A. Hull
E. Focht
S. Downey
M. Breach
K. Hsu
Y. Diaz-Castillo
R. Davis
R. Roche-Rivera
T. Lupold

Jordan Hoellman, NRC Project

Office of Nuclear Reactor Regulation 

U.S. Nuclear Regulatory Commission
Washington, DC 20555-0001

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This NUREG documents the U.S. Nuclear Regulatory Commission (NRC) staff’s technical evaluation of the 2017 Edition of the American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code (ASME Code), Section III, “Rules for Construction of Nuclear Facility Components,” Division 5, “High Temperature Reactors,” and select associated Code Cases for acceptability and endorsement. As of this writing, the absence of a code of construction endorsed by the NRC for nuclear reactors operating above 425 degrees Celsius (800 degrees Fahrenheit) is a significant obstacle for advanced non-light-water-reactor designs. Review of an elevated temperature code of construction during a licensing review of a new nuclear power plant would result in substantial cost and a longer schedule for the requested action. This report documents the NRC’s technical review and findings that support its endorsement of ASME Code, Section III, Division 5.

Page Last Reviewed/Updated Friday, August 20, 2021