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Risk-Informed and Performance-Based Guidance for Non-LWR Licensing Basis Development

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Publication of Regulatory Guide 1.233

As an outcome of the Licensing Modernization Project (LMP), the NRC published Regulatory Guide 1.233, "Guidance for a Technology-Inclusive, Risk-Informed, and Performance-Based Methodology to Inform the Licensing Basis and Content of Applications for Licenses, Certifications, and Approvals for Non-Light Water Reactors," in the Federal Register on June 9, 2020.  This regulatory guide endorsed the methodology described in NEI 18-04, Revision 1, "Risk-Informed Performance-Based Guidance for Non-Light Water Reactor Licensing Basis Development," as an acceptable approach for informing the licensing basis and determining the appropriate scope and level of detail for parts of applications for licenses, certifications, and approvals for non-LWRs.  See SECY-19-0117, "Technology-Inclusive, Risk-Informed, and Performance-Based Methodology to Inform the Licensing Basis and Content of Applications for Licenses, Certifications, and Approvals for Non-Light-Water Reactors," and associated Staff Requirements Memorandum for information on associated policy issues.

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Pilot Project Reports

The following reports are related to LMP pilot activities.

Date

Design

September 2019

Fluoride-Cooled High Temperature Reactor Licensing Modernization Project Demonstration

September 2019

Molten Salt Reactor Experiment (MSRE) Case Study Using Risk-Informed, Performance-Based Technical Guidance to Inform Future Licensing for Advanced Non-Light Water Reactors

August 2019

Westinghouse eVinci Micro Reactor
Licensing Modernization Project Demonstration

December 2018

PRISM Sodium Fast Reactor
Licensing Modernization Project Demonstration

September 2018

OKLO's DG-1353 Pilot

August 2018

High Temperature, Gas-Cooled Pebble Bed Reactor
licensing Modernization Project Demonstration

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Page Last Reviewed/Updated Wednesday, August 06, 2025

Page Last Reviewed/Updated Wednesday, August 06, 2025