ML23018A053

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M230124: Slides/Supporting Presentation Material - J. Bradfute - Overview of Accident Tolerant Fuel Activities
ML23018A053
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Issue date: 01/24/2023
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M230124
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WESTINGHOUSE UPDATE FOR DOE ATF HIGH BURNUP PROGRAM Jeffrey L. Bradfute Senior Vice President, Americas PWR Fuel NRC Commission Briefing - January 24, 2023 Westinghouse Non-Proprietary Class 3 l © 2023 Westinghouse Electric Company LLC. All Rights Reserved.

Westinghouse EnCore fuel program enables 24-month cycles and significant uprates for PWRs with advanced cladding and pellets ACCIDENT TOLERANT FUEL PRODUCTS Chromium-Coated Zr Cladding SiGA Silicon Carbide Higher Burnup Fuel Advanced Cladding (SiC) Composite Chromium-Coated Zirconium - Cladding increases safety and operational margin, and may enable high burnup Silicon Carbide Cladding - safety and operational benefits ATF Products Enables HB Fuel Advanced Fuel ADOPT Fuel Pellets Uranium Nitride ADOPT fuel pellets - higher (UN) Pellets density, can support higher burn up Advanced Pellet (UN) - benefits to

  • Enables 24-month cycles fuel cycle costs, and may support high burnup improved fuel cycle
  • Improves fuel cycle economics economics, thermal properties, and lower operating temperatures
  • Supported through higher U15N Fuel enrichment and ATF technologies Photo courtesy of Los Alamos National Lab Encore and ADOPTTM are registered trademarks or trademarks of Westinghouse Electric Company LLC, its affiliates, and/or its subsidiaries through the United States of America and may be registered in other countries throughout the world. SIGA is a registered trademarks of General Atomics, its affiliates, and/or its subsidiaries through the United States of America and may be registered in other countries throughout the world. All rights reserved. Unauthorized use is strictly prohibited. Other names may be trademarks of their respective owners.

Westinghouse Non-Proprietary Class 3 l © 2023 Westinghouse Electric Company LLC. All Rights Reserved. 2

Westinghouse rapidly progressed all facets of ATF program in 2022/2023 Dec 2021: July 2022: Cold Aug 2022: Vogtle Continuing into Spring 2023:

Submitted topical Cr spray chosen LAR submittal for 2023: Develop in- Submit topical report burnup as EnCore ATF ATF >5 w/o 235U rod sensors for report for higher extensions to 68 Zr Cr coating LTAs model validation enrichments > 5 MWd/kgU technology w/o 235U June 2022: ADOPT Pellet Aug 2022: Byron 2 Continuing into Early 2023: Fall 2023:

Final SERs issued, full region LAR submittal for 2023: UN fuel General Atomics Complete to be inserted in mid 2020s reinsertion of ATF property atomic work on SiGA(R) fabrication of Vogtle LTRs to exceed scale model for ATR ATF LTAs and insert 75 MWd/kgU development Byron 2 LTA for 3rd burn ATF: Accident Tolerant Fuel ATR: Advanced Test Reactor 3 LAR: License Amendment Request Westinghouse Non-Proprietary Class 3 l © 2023 Westinghouse Electric Company LLC. All Rights Reserved. LTR: Lead Test Rod SER: Safety Evaluation Report

Commercial reactor testing continues to confirm excellent performance of Westinghouse ATF products LTR/LTA Campaigns with Utility Partners provide Byron Unit 2 LTRs Doel Unit 4 LTRs critical data to support fuel qualification EOC 1 High High Cr Coated ADOPT Density Enriched Cladding Pellets Pellets Pellets Byron Unit 2 (2019)

Doel Unit 4 (2020)

EOC 2 Vogtle Unit 2 (2023) ATF rods appear "pristine" with excellent coating adherence and little EDF LTRs indication of crud.

(2023)

LTR: Lead Test Rod 4

LTA: Lead Test Assembly Westinghouse Non-Proprietary Class 3 l © 2023 Westinghouse Electric Company LLC. All Rights Reserved.

Cr Coated Rods EOC: End of Cycle

Post irradiation examinations of Byron-2 fuel shipments confirm excellent EnCore fuel performance Mount material 3 ATF and 4 high burnup rods received mid-2021 Mount Cr Cr Coating Optimized ZIRLO Rod A Rod A Standard UO2 Credit: ORNL Photographer Carlos Jones Excellent cold sprayed Cr Additional Byron 2 ATF and high coating integrity with complete burnup fuel shipments to INL and protection of substrate ORNL planned Westinghouse Non-Proprietary Class 3 l © 2023 Westinghouse Electric Company LLC. All Rights Reserved. 5

Codes and methods and fuel transportation updates support deployment of ATF and high energy fuel

  • PARAGON2TM two-dimensional fuel energy transport code approved by NRC for modeling of 235U enrichments up to 10%
  • TravellerTM fuel shipping container package approved by NRC for 235U enrichments exceeding 5%
  • Fuel fragmentation, relocation, and dispersal (FFRD) is at the center of the Westinghouse HBHE fuel program, fully support Industry efforts
  • Topical reports under development to be submitted for approval between 2023 and 2025
  • High enrichment topical to exceed the current 5% 235U enrichment limit
  • Chromium coated cladding topical report
  • PAD5TM supplement for burnups: up to ~75 MWd/kgU
  • TM FSLOCA supplement for burnups: up to ~75 MWd/kgU
  • High burnup topical for burnups: up to ~75 MWd/kgU PARAGON2TM , TravellerTM, PAD5TM and FSLOCATM are trademarks of Westinghouse Electric Company LLC, its affiliates, and/or its subsidiaries through 6 the United States of America and may be registered in other countries throughout Westinghouse Non-Proprietary Class 3 l © 2023 Westinghouse Electric Company LLC. All Rights Reserved. the world. All rights reserved. Unauthorized use is strictly prohibited.

Summary

  • Good progress being made on all fronts for ADOPT pellets and Coated Cladding with respect to development, fabrication scale-up, and licensing
  • Poolside and Hotcell Post Irradiation Exam (PIE) support excellent fuel performance of ATF features
  • Expect to insert first ATF feature (ADOPT pellets) in full region mid 2020s
  • Good progress being made to fabricate UN pellets for test reactor testing and working with General Atomics to develop and qualify the SiC composite cladding
  • ATF features provide enhanced safety, improved fuel cycle economics, support uprates and enable higher burnup / 24-month cycles Westinghouse very appreciative for all DOE, NRC, National Lab, Utility and NEI/EPRI Support 7

Westinghouse Non-Proprietary Class 3 l © 2023 Westinghouse Electric Company LLC. All Rights Reserved.

The following material is based upon work supported by the United Stated Department of Energy under Award Number DE-NE0009033 This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof. The views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or any agency thereof.

8 Westinghouse Non-Proprietary Class 3 l © 2023 Westinghouse Electric Company LLC. All Rights Reserved.

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