ML22362A064

X-Energy, LLC – Acknowledgement of Withdrawal of Revisions 1 and 2 of XE-100 Topical Report: TISO-X Pebble Fuel Qualification Methodology

ML22362A064
Person / Time
Site:	99902071
Issue date:	02/02/2023
From:	Michael Orenak NRC/NRR/DANU/UAL1
To:	Chapman T X-Energy
References
EPID L-2021-TOP-0011
Download: ML22362A064 (1)

Text

Mr. Travis Chapman Director, U.S. Licensing, Xe-100 Program X Energy, LLC 801 Thompson Avenue Rockville, MD 20852

SUBJECT:

X ENERGY, LLC - ACKNOWLEDGEMENT OF WITHDRAWAL OF REVISIONS 1 AND 2 OF XE-100 TOPICAL REPORT: TRISO-X PEBBLE FUEL QUALIFICATION METHODOLOGY (EPID NO. L-2021-TOP-0011)

Dear Mr. Chapman:

By letter dated April 30, 2021, X Energy, LLC (X-energy) submitted topical report (TR)

XE00-R-R1ZZ-RDZZ-L, Xe-100 Topical Report: TRISO-X Pebble Fuel Qualification Methodology, Revision 1, (Agencywide Document Access and Management System (ADAMS)

Accession No. ML21120A332) for U.S. Nuclear Regulatory Commission (NRC) staff review.

This TR provided information intended to qualify the tri-structural isotropic (TRISO)-coated particle fuel pebbles to be used in the Xe-100 high-temperature gas-cooled reactor design under development by X-energy. A closed meeting was held on June 4, 2021, to provide the NRC staff with an overview of the TR (ML21354A289).

On September 2, 2021, (ML21246A289), X-energy submitted for NRC staff review XE00-R-R1ZZ-RDZZ-L, Revision 2, to supersede the previous revision with an updated figure based on the NRC staff feedback provided during the June 4, 2021, closed meeting and to provide both proprietary and non-proprietary versions of the TR.

The NRC staff reviewed the TR and issued requests for additional information (RAIs) on Revision 2 of the TR on December 2, 2022 (ML21334A233 (non-public)). Subsequently, a closed meeting was held on February 10, 2022, to clarify the RAIs. The NRC staff received RAI responses from X-energy on February 28, 2022 (ML22059A770).

A closed meeting was held on May 20, 2022, (ML22166A424) to discuss the RAI responses.

Afterward, by letter dated July 29, 2022, X-energy submitted XE00-R-R1ZZ-RDZZ-L, Revision 3, (ML22216A179) for NRC staff review.

By letter dated September 21, 2022, (ML22265A218) X-energy requested withdrawal of Revisions 1 and 2 of the TR. Accordingly, the NRC staff will continue its review of Revision 3 of the TR.

February 2, 2023

T. Chapman 2

If you have any questions, please contact me at (301) 415-3229 or via email at Michael.Orenak@nrc.gov.

Sincerely, Michael D. Orenak, Project Manager Advanced Reactor Licensing Branch 1 Division of Advanced Reactors and Non-Power Production and Utilization Facilities Office of Nuclear Reactor Regulation Project No. 99902071 cc: tchapman@x-energy.com martinvs@x-energy.com inordby@x-energy.com Signed by Orenak, Michael on 02/02/23

T. Chapman 3

SUBJECT:

X ENERGY, LLC - ACKNOWLEDGEMENT OF WITHDRAWAL OF REVISIONS 1 AND 2 OF XE-100 TOPICAL REPORT: TRISO-X PEBBLE FUEL QUALIFICATION METHODOLOGY (EPID NO. L-2021-TOP-0011)

DATED: FEBRUARY 2, 2023 DISTRIBUTION:

Public RidsOgcMailCenter RidsOpaMail Resource RidsNrrDanu Resource RidsNrrDanuUal1 Resource RidsNrrDanuUal2 Resource KWagner, NRR DGreene, NRR CSmith, NRR WJessup, NRR MHayes, NRR MOrenak, NRR SDevlin-Gill, NRR ADAMS Accession Number: ML22362A064 NRR-106 OFFICE NRR/DANU/UAL1/PM NRR/DANU/UAL1/PM NRR/DANU/UAL1/LA NRR/DANU/UTB1/BC NAME KWagner MOrenak DGreene MHayes DATE 1/13/2023 1/17/2023 1/24/2023 1/24/2023 OFFICE NRR/DANU/UAL1/BC NRR/DANU/UAL1/PM NAME WJessup MOrenak DATE 2/2/2023 2/2/2023 OFFICIAL RECORD COPY