Enclosure 2 - Presentation for Pre-Submittal Meeting - Non

ENCLOSURE 2

M210134

Presentation for Pre-Submittal Meeting

Non-Proprietary Information

INFORMATION NOTICE Enclosure 2 is a non-proprietary version of the Presentation for Pre-Submittal Meeting from Enclosure 1, which has the proprietary information removed. Portions that have been removed are indicated by open and closed double brackets as shown here [[ ]].

LANCR02 (L02) Model and Qualification TRs – Revision 4

LANCR02/PANAC11 (P11) Application Methodology TR –Revision 0

NRC Pre-submittal MeetingSeptember 2021

2LANCR02 and PANAC11 LTRs – Pre-submittal Meeting

Safety Minute – Maintaining a Questioning Attitude

https://www.nytimes.com/2019/06/01/business/boeing-737-max-crash.html

Original Agenda

Time Topic Speaker 9:00 am - 9:10 am Introductions GEH, NRC 9:10 am - 9:45 am LANCR Methods Topical Report (TR) and Qualification

TR Update Summary GEH

9:45 am - 10:15 am LANCR Qualification TR Revision Highlights GEH 10:15 am - 10:45 am LANCR/PANAC Application TR Strategy and Objectives GEH 10:45 am - 12:00 pm LANCR/PANAC Application TR Walk-through GEH 12:00 pm – 1:00 pm Questions/Discussions GEH, NRC 1:00 pm Adjourn

Agenda has been updated as discussed on slides that follow.

The same material will be covered, but more context on licensing approach will be provided before diving into details in any area.

Agenda and Objectives

Updated Agenda and High-Level Meeting ObjectivesMeeting Agenda

• Part 1 – Methods Licensing Overview (~15 mins)

• Part 2 – LANCR02 and PANAC11 TRs Strategy and Objectives (~30 mins)

• Part 3 – LANCR02 Model and Qualification TR Update Summary (~45 mins)

• Part 4 – LANCR02/PANAC11 Application TR Introduction and Walkthrough (~90 mins)

Meeting Objectives

• Communicate how these submittals fit into the overall GNF Methods’ framework

• Describe the rationale for the TRs’ respective content and the strategy for their usage going forward

• Make the scope of the changes to the LANCR02 TRs clear while emphasizing the drivers for the changes

• Introduce the L02/P11 TR while connecting it to historical approaches and approvals

Part 1:Methods Licensing Overview

Part 1 Content

• Technology Nomenclature and Change Drivers

• “Nuclear Methods” Submittal Status and Timeline

• “Downstream Methods” Submittal Strategy

Part 1 Objectives

• Clarify the scope of this submittal as it relates to overall GNF BWR analysis methodologies and near-term industry needs

• Communicate status of “Nuclear Methods” related submittals

• Introduce “Downstream Methods” scope and timeline for future communications. Obtain feedback on expected relative efficiency associated with implementation options.

Part 1 Duration

• ~15 minutes

Methods Licensing OverviewContent and Objectives

Fuel Rod Thermal-Mechanical• Thermal Mechanical Behavior of Fuel Rod

• PRIME03 – Approved Production Tool

2D Lattice Physics• Nuclear Behavior of Fuel Rods Within Bundle

• TGBLA06 – Approved Production Tool• LANCR02 – Model and Qualification TRs Approved

3D Core Simulation• Nuclear + Thermal-Hydraulic Behavior of Bundles in

Core• PANAC11 – Approved Production Tool• AETNA02 – Internally Qualified, no TRs

3D Plant Simulation• Best Estimate Analysis of Operational Transients (ODYN

and TRACG)• Frequency Domain Analysis of Core Stability (ODYSY)

• TGBLA06/PANAC11 is GNF’s approved steady state nuclear methodology in use today

• GESTAR Amendment 26 – Initial Approval of T6/P11 following MFN# 098-96

• NEDC-33173-P-A (IMLTR) - Approval for Expanded Operating Domains

• IMLTR Supplements 2-6 – Removed penalties associated with IMLTR

• TGBLA06 application range limited w/r/t the next phase of fuel development (e.g., LEU+/HBU, Advanced Geometry, Non-Zirc Clad)

• LANCR02 approved [[

Methods Licensing OverviewTechnology Nomenclature and Change Drivers

Downstream Methods

Nuclear Methods

TR Development Status

Initial Studies and Automation Development

LANCR02 MTR and QTR Revision – Technical Compilation

LANCR02 MTR and QTR Revision – Design Review and Release

L02/P11 ATR Design Review Part 1 – Strategy and Scope Review

L02/P11 ATR Technical Development (~95% complete)

L02/P11 ATR – Technical Compilation

L02/P11 ATR Design Review Part 2 – Final Review and Release (~25% complete)

Submittal Timeline

• Pre-Submittal Meeting: 9/24/2021

• Submittal of LANCR MTR/QTR Revisions: [[ ]]

• Submittal of LANCR02/PANAC11 ATR: [[ ]]

Methods Licensing OverviewCurrent Status and Timeline

• [[

Methods Licensing OverviewDownstream Methods Submittal Strategy

Methods Licensing OverviewDownstream Methods Submittal Strategy – “Method C” Introduction

Part 2:LANCR02 and PANAC11 TRs

Strategy and Objectives

Part 2 Content

• PANAC11 Current Approval Bases and Supplemental Documentation

• The Case for Incremental Improvements

• Clarifying the present to build momentum for the future

Part 2 Objectives

• Clarify the current approval bases for PANAC11 while providing historical context on related documentation (“Where are we now?”)

• Explain the drivers that lead to this submittal (“How did we get here?”)

• Introduce the high-level documentation strategy for these TRs with an emphasis on what they need to enable to be considered successful (“Where do we go from here?”)

Part 2 Duration

• ~30 minutes

LANCR02 and PANAC11 TRs Strategy and ObjectivesContent and Objectives

LANCR02 and PANAC11 TRs Strategy and ObjectivesPANAC11 Current Approval Bases and Supplemental Documentation

• The regulatory approval basis for a core simulator has three primary components:• Methods Description• Performance Demonstration • Uncertainty Quantifications for Application Purposes

• The components associated with the production version of TGBLA06/PANAC11 in use today have evolved over time across a range of topical reports that have a variety of explicit approval statuses

• The slide that follows maps that evolution of component approvals to clarify the current regulatory basis for the use of TGBLA06/PANAC11 today.

LANCR02 and PANAC11 TRs Strategy and ObjectivesPANAC11 Current Approval Bases and Supplemental Documentation

LANCR02 and PANAC11 TRs Strategy and ObjectivesThe Case for Incremental Improvements

• [[

LANCR02 and PANAC11 TRs Strategy and ObjectivesClarifying the Present to Build Momentum for the Future – Methods Descriptions

Clarify the Present• [[

Enable the Future• [[

LANCR02 and PANAC11 TRs Strategy and ObjectivesClarifying the Present to Build Momentum for the Future – Performance Demonstration

LANCR02 and PANAC11 TRs Strategy and ObjectivesClarifying the Present to Build Momentum for the Future – Uncertainty Quantifications

LANCR02 and PANAC11 TRs Strategy and ObjectivesHigh Level Summary

Part 3:LANCR02 Model and Qualification TR

Update Summary

Part 3 Content

• Specific Revision Objectives

• Change Details

• Development and Documentation Strategy

• Side-by-Side Comparison Highlights

Part 3 Objectives

• Describe the drivers for this revision and details of changes to the TRs

• Present the approach taken for revisions to attempt to streamline the review

• Provide highlights of Revision 3 versus Revision 4 results to demonstrate impacts of changes to these TRs

Part 3 Duration

• ~45 minutes

LANCR02 Model and Qualification TR Update SummaryContent and Objectives

LANCR02 Model and Qualification TR Update SummaryRevision Objectives

LANCR02 Model and Qualification TR Update SummaryChange Details – Expand Cold Critical Benchmarking

LANCR02 Model and Qualification TR Update SummaryChange Details – Implement Improved Benchmarking Tools: MCNP-06P

LANCR02 Model and Qualification TR Update SummaryChange Details – Implement Improved Benchmarking Tools: MCNP6_Depletion

LANCR02 Model and Qualification TR Update SummaryChange Details – Update Background Cross Section Treatment

LANCR02 Model and Qualification TR Update SummaryChange Details – “Inflow” Transport Approximation

LANCR02 Model and Qualification TR Update SummaryChange Details – Depletion Case Matrix Expansion

LANCR02 Model and Qualification TR Update SummaryDevelopment and Documentation Strategy

Development Strategy

• [[

Documentation Strategy

• [[

LANCR02 Model and Qualification TR Update SummarySide-by-Side Comparison Highlights – Test Suite 1 (Baseline): Eigenvalue Comparison

LANCR02 Model and Qualification TR Update SummarySide-by-Side Comparison Highlights – Test Suite 1 (Baseline): CDOP Comparison

LANCR02 Model and Qualification TR Update SummarySide-by-Side Comparison Highlights – Test Suite 9 (Enrichment): Eigenvalue Comparison

LANCR02 Model and Qualification TR Update SummarySide-by-Side Comparison Highlights – Depletion Example Comparison (7099v0)

LANCR02 Model and Qualification TR Update SummarySide-by-Side Comparison Highlights – Depletion Statistics Comparison

LANCR02 Model and Qualification TR Update SummaryFinal Review

Part 4:LANCR02/PANAC11 Application TR

Introduction and Walkthrough

Part 4 Content

• Introduction and Table of Contents Review

• Section-by-Section Walkthrough

Part 4 Objectives

• Describe the TR structure while highlighting features that are used to meet overall TR Objectives

• Provide a Section-by-Section Walkthrough on content to highlight important features and make connections between this work and historical approvals.

Part 4 Duration

• ~90 minutes

Note: L02/P11 ATR is currently undergoing design review, so content subject to change

LANCR02/PANAC11 Application TR Intro and WalkthroughContent and Objectives

LANCR02/PANAC11 Application TR Intro and WalkthroughIntroduction and Table of Contents Review

LANCR02/PANAC11 Application TR Intro and WalkthroughSection-by-Section Walkthrough – Methods Description: Overview

LANCR02/PANAC11 Application TR Intro and WalkthroughSection-by-Section Walkthrough – Methods Description: PANAC11

LANCR02/PANAC11 Application TR Intro and WalkthroughSection-by-Section Walkthrough – Methods Description: Adaption

LANCR02/PANAC11 Application TR Intro and WalkthroughSection-by-Section Walkthrough – Performance Demonstrations: Overview

LANCR02/PANAC11 Application TR Intro and WalkthroughSection-by-Section Walkthrough – Performance Demonstrations: Case Matrix Highlights

LANCR02/PANAC11 Application TR Intro and WalkthroughSection-by-Section Walkthrough – Performance Demonstrations: Results Highlights

LANCR02/PANAC11 Application TR Intro and WalkthroughSection-by-Section Walkthrough – Uncertainty Quantifications: Overview

LANCR02/PANAC11 Application TR Intro and WalkthroughSection-by-Section Walkthrough – Uncertainty Quantifications: Plant System Uncertainties

LANCR02/PANAC11 Application TR Intro and WalkthroughSection-by-Section Walkthrough – Uncertainty Quantifications: Power Dist Model Uncertainties

LANCR02/PANAC11 Application TR Intro and WalkthroughSection-by-Section Walkthrough – Uncertainty Quantifications: Monitoring Uncertainties

LANCR02/PANAC11 Application TR Intro and WalkthroughSection-by-Section Walkthrough – Uncertainty Quantifications: Combined Uncertainties

LANCR02/PANAC11 Application TR Intro and WalkthroughSection-by-Section Walkthrough – Uncertainty Quantifications: Shutdown Margin Uncertainty

LANCR02/PANAC11 Application TR Intro and WalkthroughSection-by-Section Walkthrough – Licensing Considerations

LANCR02/PANAC11 Application TR Intro and WalkthroughFinal Review

End of Material

Open Discussion

Enclosure 2 - Presentation for Pre-Submittal Meeting - Non

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