ML25163A325

Enclosure 2: Non-Proprietary Slides for June 16, 2025, pre-application Meeting on Leu+ Management Measures and ISA

ML25163A325
Person / Time
Site:	Westinghouse
Issue date:	06/12/2025
From:	Westinghouse
To:	Office of Nuclear Material Safety and Safeguards
Shared Package
ML25163A322	List: ML25163A323 ML25163A324 ML25163A325
References
LTR-RAC-25-28
Download: ML25163A325 (1)

Text

WESTINGHOUSE NON-PROPRIETARY CLASS 3 LTR-RAC-25-28 June 12, 2025 ENCLOSURE 2 Open Session Slide Package for the June 16, 2025, Pre-Application Meeting on LEU+

Management Measures and Integrated Safety Analysis (Non-Proprietary)

Westinghouse Non-Proprietary Class 3 l © 2025 Westinghouse Electric Company LLC. All Rights Reserved.

Columbia Fuel Fabrication Facility LEU+ Management Measures and Integrated Safety Analysis June 2025

Westinghouse Non-Proprietary Class 3 l © 2025 Westinghouse Electric Company LLC. All Rights Reserved.

LEU+ Project Objectives Increased enrichment supports US pressurized water reactor transitions from 18-to 24-month refueling cycles New building in Hopkins, SC will produce fuel assemblies <8% U-235 enrichment Operate up to 600MTU/year and partial shift of load from existing operations Expansion and processes for <8 wt% will require multiple permits and licenses for construction and operation Processes incorporate sustainability principles, automation, and engineered controls LEU+ will create new jobs and provide advancement opportunities for current employees

Westinghouse Non-Proprietary Class 3 l © 2025 Westinghouse Electric Company LLC. All Rights Reserved.

Overview of LEU+ Manufacturing Conversion

• Ammonia-free dry conversion process 8% enriched UF6

• Lower emissions with use of dry process

• Consideration of automated conversion lines and enclosed processes Pelleting

• Advanced Doped Pellet Technology (ADOPT) blending

• Consideration of automated pelleting lines and enclosed processes Burnable Absorbers

/Rods

• Integrated Fuel Burnable Absorber (IFBA) dry room

• Automatic rod loading and welding Uranium Recovery

• Uranium recovery process

• Reduced ammonia process Mechanical

• Single control access point

• Non-SNM skeletons from current operations

• Ship to customers in Traveller package

Westinghouse Non-Proprietary Class 3 l © 2025 Westinghouse Electric Company LLC. All Rights Reserved.

Management Measures

• 10 CFR 70 Requirements

• Applied to items relied on for safety to ensure availability and reliability to perform

• May be graded commensurate with the reduction of risk

• Required for compliance to the performance requirements in 70.61

• CFFF Approved License Application (Chapter 3)

• Management Measures are applied to IROFS for reasonable assurance that IROFS are available and reliable

• Management Measures applied to IROFS are identified in the ISA Summary

• Based on the type of control (e.g., engineered, administrative)

Westinghouse Non-Proprietary Class 3 l © 2025 Westinghouse Electric Company LLC. All Rights Reserved.

Types of Management Measures

• Configuration management

• Maintenance

• Training and qualifications

• Procedures

• Human performance

• Audits

• Incident investigations

• Corrective Action Program

• Records management

• Other quality assurance elements

Westinghouse Non-Proprietary Class 3 l © 2025 Westinghouse Electric Company LLC. All Rights Reserved.

Integrated Safety Analysis

• 10 CFR 70 Requirements

• ISA Summary includes description of the site, facility, and processes

• Focused on items that affect safety or present hazards

• Compliance to performance requirements

• CFFF Approved License Application (Chapter 4)

• Systematic process

• Initiating events from facility and external hazards

• Potential and credible accident sequences

• Likelihood and consequences

• Selection of IROFS

• Multi-disciplinary team

Westinghouse Non-Proprietary Class 3 l © 2025 Westinghouse Electric Company LLC. All Rights Reserved.

CFFF ISA Process (Chapter 4)

• ISA Process described in CFFF ISA Handbook

• Segment LEU+ processes into ISA chapters

• Process Description

• Upset conditions identified in process hazards analyses Accident Sequence Generation Consequence Analysis High or Intermediate Consequence Likelihood Analysis Credible Accident Sequence Risk Analysis Low Consequence Not Credible Meets Performance Requirements IROFS Mitigation

Westinghouse Non-Proprietary Class 3 l © 2025 Westinghouse Electric Company LLC. All Rights Reserved.

Risk and Performance Criteria Overall Likelihood of Accident Not Unlikely Unlikely Highly Unlikely 1

0

-1

-2

-3

-4 High Severity of Consequences Intermediate Low Notes Color Risk Category Meets performance criteria Risk Zone 3 Meets performance criteria but unacceptable risk for long-term operation Risk Zone 2 Does not meet performance requirements. Unacceptable risk for continued operation.

Risk Zone 1

Westinghouse Non-Proprietary Class 3 l © 2025 Westinghouse Electric Company LLC. All Rights Reserved.

Baseline Design Criteria 70.64(a), (b)

Consistent with Approved License Application

• Quality standards/records

• Fire protection

• Environmental and dynamic effects

• Chemical protection

• Control of licensed material, evacuation, onsite emergency facilities

• Essential utility services (none)

• Inspection, testing, and maintenance

• Double Contingency Principle

• Instrumentation and controls LEU+ Baseline Design Criteria Additions

• Quality standards/records

• New RFS for lifetime IROFS records

• Natural Phenomena Hazards

• Building design criteria and white paper

• Defense-in-depth practices

• Preference to engineered controls

• Reducing challenges to IROFS

Westinghouse Non-Proprietary Class 3 l © 2025 Westinghouse Electric Company LLC. All Rights Reserved.

Questions?

End of open portion of meeting