ML19099A016
| ML19099A016 | |
| Person / Time | |
|---|---|
| Site: | Susquehanna  |
| Issue date: | 04/09/2019 |
| From: | Susquehanna |
| To: | Division of Operating Reactor Licensing |
| Tobin J, NRR/DORL/LPL1, 415-2328 | |
| References | |
| Download: ML19099A016 (13) | |
Text
Susquehanna - Advanced Framatome Methods LAR NRC Pre-Application Meeting 1
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Background===
During a meeting with the NRC on 05/15/18, Talen Energy and the NRC discussed Susquehannas intent to submit an LAR to adopt advanced Framatome methods Advanced Framatome methods are needed to support ATRIUM 11* deployment Advanced Framatome Methods LAR approval is needed by January 2021 to support the first reload of ATRIUM 11 This application will not be a first of a kind deployment
- ATRIUM is a trademark of Framatome, Inc.
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Background (cont)
- Information will be provided on, Motivation for LAR Proposed Milestones / Schedule LAR Content o Staged submittal for selected cycle specific items for first reload of ATRIUM 11 LAR Methodologies o Generic advanced Framatome methods o Other technical considerations 3
Motivation for LAR
- Susquehanna has operated the ATRIUM 10 fuel design since 1997
- Talen Energy desires to deploy ATRIUM 11 fuel in reload quantities 11x11 array reduces LHGR; improving safety margin Improved debris protection features (fuel failure risk reduction)
Improved fuel channel performance and economics
- First ATRIUM 11 Reloads Unit 2 Cycle 21 - Startup Spring 2021 Unit 1 Cycle 23 - Startup Spring 2022 4
Proposed Milestones
- Transition cores will only contain Framatome fuel types Currently operating with full cores of ATRIUM 10 No multi-vendor core issues to review
- Date for LAR Submittal
- SER need date to support first ATRIUM 11 Reload 5
LAR Content
Assembly Mechanical Design reports Methods Applicability Document Thermal Hydraulic Design Report LOCA / MAPLHGR Report BWR Licensing Methodology Compendium o Updated for new methods (AURORA-B [LOCA / Transients and Accidents /
CRDA], ACE / ATRIUM 11, SAFLIM3D, RODEX4, and Chromium-Doped fuel) 6
LAR Content (cont)
Fuel Cycle Design Report Nuclear Fuel Design Report Fuel Rod Design Report AURORA-B Transient Analysis Demonstration 7
LAR Content (cont)
- Implementation cycle reports will be submitted for the first cycle application after the LAR for information on a slightly accelerated licensing analysis schedule Fuel Cycle Design Report Nuclear Fuel Design Report Safety Limit MCPR Report Fuel Rod Design Report Reload Safety Analysis Report 8
LAR Content: TS 5.6.5 Additions
- Framatome Thermal-mechanical methodologies BAW-10247P-A Revision 0, Realistic Thermal-Mechanical Fuel Rod Methodology for Boiling Water Reactors BAW-10247P-A, Supplement 1P-A, Revision 0, Realistic Thermal-Mechanical Fuel Rod Methodology for Boiling Water Reactors Supplement 1: Qualification of RODEX4 for Recrystallized Zircaloy-2 Cladding BAW-10247P-A, Supplement 2P-A, Revision 0, Realistic Thermal-Mechanical Fuel Rod Methodology for Boiling Water Reactors Supplement 2: Mechanical Methods ANP-10340P-A Revision 0, Incorporation of Chromium-Doped Fuel in AREVA Approved Methods 9
LAR Content: TS 5.6.5 Additions (cont)
- Framatome Licensing methodologies ANP-10335P-A Revision 0, ACE/ATRIUM 11 Critical Power Correlation ANP-10300P-A Revision 1, AURORA-B: An Evaluation Model for Boiling Water Reactors; Application to Transient and Accident Scenarios ANP-10332P-A Revision 0, AURORA-B: An Evaluation Model for Boiling Water Reactors; Application to Loss of Coolant Accident Scenarios ANP-10333P-A Revision 0, AURORA-B: An Evaluation Model for Boiling Water Reactors; Application to Control Rod Drop Accident Scenarios ANP-10307P-A Revision 0, AREVA MCPR Safety Limit Methodology for Boiling Water Reactors 10
LAR Content: Stability Methods
- Susquehanna will continue to use the approved stability methods currently referenced in plant Technical Specifications
- The fuel rod property models will use the new Framatome fuel rod property models that are applicable to both UO2 and Chromia doped fuel, these models and their benchmarking will be described in the Methods Applicability Document Will utilize the same stability fuel rod property models as used in the Duke submittal 11
LAR Content: Other TS Changes
- Implement TSTF-535, Revision 0, "Revise Shutdown Margin Definition to Address Advanced Fuel Designs" proposed change revises the definition of Shutdown Margin (SDM) to require calculation of the SDM at a reactor moderator temperature of 68°F or a higher temperature corresponding to the most reactive state throughout the operating cycle.
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Summary
- Proposed date for LAR submittal
- LAR will request the addition of advanced Framatome methodologies to the Susquehanna Technical Specifications
- LAR approval is needed by January 2021 to support the first reload of ATRIUM 11
- Implementation of the ATRIUM 11 fuel design will be via the 50.59 process 13