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  • , r ,

    framatome ANP-10323P (GALILEO) Plan to Resume NRC Review

    Chris Allison Nathan Hottle

    Rockville, MD April 24, 2018

  • Agenda - • Objectives

    • ANP-10323P review status

    • Resolution of code stability issue

    • Additional changes to the code and methodology

    • Path forward

    ANP-10323P (GALILEO) Plan to Resume NRC Review-April 24, 2018 p.2 framatome

  • Objectives

    • Re-establish the topical report review

    • Present resolution of code stability issue

    • Provide an overview of changes made to the code and methodology described in ANP-10323P Revision 0

    -

    • Discuss Framatome's plans for ANP-10323P Revision 1 and for responding to RAls, with the objectives of:

    + Reaching agreement on the proposed plan + Aligning resource plans to promptly resume the NRC review

    ANP-10323P (GALILEO) Plan to Resume NRC Review-April 24, 2018 p.3 framatome

  • Background

    • Framatome (formerly known as AREVA) submitted ANP- 10323P for review and approval in August 2013.

    - • After extensive discussions between Framatome and NRC in

    2015, RAls were issued in March 2016.

    • In November 2015, Framatome revised the requested review and approval to remove the BWR and MOX scope. An unofficial mark-up was provided identifying portions of the topical report that were no longer in scope.

    • Also in November 2015, Framatome informed NRC about a code stability issue with the GALILEO code, and later requested that the NRC suspend the review until the issue was resolved.

    ANP-10323P (GALILEO) Plan to Resume NRC Review-April 24, 2018 p.4 framatome

  • Code Stability Issue Original Symptoms

    Questioning attitude helped uncover the issue during update of the statistical methodology automation tool + Common automation tool used for both R0DEX4 and GALILEO analyses

    - + Automation had to be updated to incorporate new BWR functionality which should

    have no impact on PWR applications + Engineer decided to re-run GALILEO PWR sample cases as additional test cases and

    noticed unexpected differences due to slight differences in input round-off

    ANP-10323P (GALILEO) Plan to Resume NRC Review-April 24, 2018 p.5 framatome

  • 2015 Version of the Code Was [ ] -

    ANP-10323P (GALILEO) Plan to Resume NRC Review-April 24, 2018 p.6 framatome

  • 2015 Version of the Code Was [ ] -

    ANP-10323P (GALILEO) Plan to Resume NRC Review-April 24, 2018 p.7 framatome

  • 2015 Version of the Code Was [ ] -

    ANP-10323P (GALILEO) Plan to Resume NRC Review-April 24, 2018 p.8 framatome

  • Causal Factors of Code Instability -

    ANP-10323P (GALILEO) Plan to Resume NRC Review-April 24, 2018 p.9 framatome

  • Resolution of Code Stability Issue Timeline -

    ANP-10323P (GALILEO) Plan to Resume NRC Review - April 24, 2018 p.10 framatome

  • Resolution of Code Stability Issue Key Changes to the Code -

    ANP-10323P (GALILEO) Plan to Resume NRC Review-April 24, 2018 p.11 framatome

  • Resolution of Code Stability Issue Key Changes to the Code -

    ANP-10323P (GALILEO) Plan to Resume NRC Review-April 24, 2018 p.12 framatome

  • Resolution of Code Stability Issue Key Changes to the Code -

    ANP-10323P (GALILEO) Plan to Resume NRC Review-April 24, 2018 p.13 framatome

  • GALILEO Code Response is Now Stable -

    ANP-10323P (GALILEO) Plan to Resume NRC Review-April 24, 2018 p.14 framatome

  • GALILEO Code Response is Now Stable -

    ANP-10323P (GALILEO) Plan to Resume NRC Review-April 24, 2018 p.15 framatome

  • GALILEO Code Response is Now Stable -

    ANP-10323P (GALILEO) Plan to Resume NRC Review-April 24, 2018 p.16 framatome

  • Additional Changes to ANP-10323P -

    ANP-10323P (GALILEO) Plan to Resume NRC Review-April 24, 2018 p.17 framatome

  • Additional Changes to ANP-10323P -

    ANP-10323P (GALILEO) Plan to Resume NRC Review-April 24, 2018 p.1a framatome

  • Additional Changes to ANP-10323P -

    ANP-10323P (GALILEO) Plan to Resume NRC Review-April 24, 2018 p.19 framatome

  • Additional Changes to ANP-10323P Under Consideration -

    ANP-10323P (GALILEO) Plan to Resume NRC Review-April 24, 2018 p.20 framatome

  • Summary - [ • Code stability issue has been resolved

    J • Additional changes will streamline the methodology and

    address specific concerns from RAls

    • Revision 1 of ANP-10323P will contain a significant amount of new information

    + Descriptions of the new models + Descriptions of methodology changes + Updated code benchmark results + Revised model uncertainties

    ANP-10323P (GALILEO) Plan to Resume NRC Review-April 24, 2018 p.21 framatome

  • Plan to Address RAls - • Responses to the current set of RAI will be provided in two

    batches

    + Batch 1 delivered in [ ] • Primarily responding to RAI requesting clarification or additional justification of the

    methodology

    + Batch 2 delivered in [ ] • Primarily responding to RAI requesting additional benchmarks or example calculations

    ,, NRC review of the new material can begin in parallel ,, with the preparation of RAI responses

    ANP-10323P (GALILEO) Plan to Resume NRC Review-April 24, 2018 p.22 framatome

  • Path Forward

    • ANP-10323P Revision 1 submittal - [ ]

    • Revision O RAI responses

    + Batch 1 - [ ] + Batch 2 - [ ]

    • Audits for understanding following submittals may be beneficial

    • To support future licensing activities [ ],

    -

    Framatome is targeting NRC approval of ANP-10323P Revision 1 by [ ].

    ANP-10323P (GALILEO) Plan to Resume NRC Review-April 24, 2018 p.23 framatome

  • • AOO

    • · BWR

    • EATF

    • FCM

    • FGR

    • L/D

    • LOCA

    • MOX

    • PWR

    • RAI

    • RIA

    • TCS

    Acronyms/Nomenclature - Anticipated operational occurrence

    Boiling water reactor

    Enhanced accident tolerant fuel

    Fuel centerline melt

    Fission gas release

    Length to diameter ratio

    Loss of coolant accident

    Mixed oxide

    Pressurized water reactor

    Request for additional information

    Reactivity insertion accident

    Transient cladding strain

    ANP-10323P (GALILEO) Plan to Resume NRC Review-April 24, 2018 p.24 framatome