ML21097A046

M210413: Slides - Sell - Regulatory Preparedness for Advanced Reactors - ARDP Perspective

ML21097A046
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Issue date:	04/13/2021
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M210413
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Regulatory Preparedness for Advanced Reactors - ARDP Perspective J. Clay Sell Chief Executive Officer, X Energy, LLC April 13, 2021

© 2020 X Energy LLC, all rights reserved © 2021 X Energy, LLC, All Rights Reserved 1 1

The Xe-100 Leverages Proven Technology With Novel Integration The Xe-100 represents continuous innovation to Pebble Bed HTGRs USA USA improve safety and economics China with a focus on simplicity, Japan reliability, and flexibility Germany 2005 - Present 2009 - Present USA 2000-Present HTR-10 Germany 1998-Present HTTR 1986-1989 USA THTR 1967-1988 Fort St. Vrain

• The Xe-100 leverages the significant 1967-1988 regulatory interactions and operating UK AVR experience of past advanced reactor 1966-1974 designs Peach Bottom USA 1966-1975 Dragon

• Xe-100 fuel development leverages the U.S. DOE investment of +$700 million for development and 1944 testing of UCO TRISO coated particles ORNL

© 2021 X Energy, LLC, All Rights Reserved 2

NGNP Legacy Challenges and Resolutions Resolutions to all these challenges are in Challenges for efficient and timely advanced place and available for demonstration. reactor deployment.

o Mechanistic Source Term o Alignment of expectations for PRA development through design and licensing o Functional Containment (Retention of Fission Products) o Security by Design o Licensing Basis Event Selection o HALEU supply chain readiness o Risk-informed Classification of Structures, Systems, and Components o Performance-based Emergency Planning and Preparedness

© 2021 X Energy, LLC, All Rights Reserved 3

Fuel Fabrication, Qualification and High Temperature Materials Fuel Fabrication and Production o X-energys TRISO-X commercial-scale fabrication capability is producing high-quality coated-particle fuel today.

Fuel Transportation o Versa-Pak 55 containers ready for finished-product transport.

Fuel Qualification & Performance o The Xe-100 benefits from the DOE Advanced Gas Reactor Fuel R&D program activities like the 2019 EPRI-sponsored TRISO fuel performance topical report & 2020 NRC safety evaluation.

High Temperature Materials o Final endorsement of ASME BPVC Section III, Division 5 standard for High Temperature Reactors will provide confidence in associated design and analysis results. 99.999% of Fission products Retained These 1mm particles retain 99.999% of the fission products

© 2021 X Energy, LLC, All Rights Reserved 4

© 2020 X Energy LLC, all rights reserved © 2021 X Energy, LLC, All Rights Reserved 5 5