ML24348A191
| ML24348A191 | |
| Person / Time | |
|---|---|
| Site: | 07109319 |
| Issue date: | 12/10/2024 |
| From: | Framatome |
| To: | Office of Nuclear Material Safety and Safeguards |
| Shared Package | |
| ML24348A189 | List: |
| References | |
| EPID L-2024-LLA-0084 | |
| Download: ML24348A191 (1) | |
Text
1 MAP License Amendment - December 10, 2024
© Framatome All right reserved NRC Pre-Application Meeting MAP Package Amendment Docket No. 9319 December 10, 2024
© Framatome All right reserved
2 MAP License Amendment - December 10, 2024
© Framatome All right reserved
- 1. Framatome Team
- 2. Project Description
- 3. Contents up to 8 wt.% 235U Enrichment
- 4. Criticality Evaluation a) Methods of Analysis b) Benchmarking c) Results
- 5. Drawing Changes
- 6. Proposed Schedule
- 7. Opportunity for Public Comment Agenda
3 MAP License Amendment - December 10, 2024
© Framatome All right reserved Framatome
Steve Cole, AFM Project Manager
Tim Tate, Manager, Environmental, Health, Safety, and Licensing
Calvin Manning, Manager, Licensing and Compliance
Brandon Hanson, Acting Manager, Licensing and Compliance
Bryan Flanagan, Packaging Engineer, Licensing and Compliance
Dan Talmadge, PWR Product Engineer
Michelle Guzzardo, Nuclear Criticality Safety Engineer
ORANO Federal Services
Chris Backus, Licensing Manager
Slade Klein, Engineering Manager
Erik Gonsiorowski, Nuclear Criticality Safety Engineer
Max Morrow, Nuclear Criticality Safety Engineer Framatome Team
4 MAP License Amendment - December 10, 2024
© Framatome All right reserved
- 1. Framatome Team
- 2. Project Description
- 3. Contents up to 8 wt.% 235U Enrichment
- 4. Criticality Evaluation a) Methods of Analysis b) Benchmarking c) Results
- 5. Drawing Changes
- 6. Proposed Schedule
- 7. Opportunity for Public Comment Agenda
5 MAP License Amendment - December 10, 2024
© Framatome All right reserved Project Description
Advanced Fuel Management (AFM) Project
Significantly reduce the utility customers operating costs in the near term by bringing to market technologies which increase cycle lengths and capacity factors
Reducing the number of refueling outages
Improving fuel cycle economics
Framatome is working in conjunction with a US reactor site to realize these benefits
NRC License Amendment Request
Increase allowable enrichment up to 8 wt.% 235U for all fuel assembly designs
Miscellaneous drawing changes to facilitate package manufacturing
Applicable for both the MAP-12 and MAP-13 packages
6 MAP License Amendment - December 10, 2024
© Framatome All right reserved
- 1. Framatome Team
- 2. Project Description
- 3. Contents up to 8 wt.% 235U Enrichment
- 4. Criticality Evaluation a) Methods of Analysis b) Benchmarking c) Results
- 5. Drawing Changes
- 6. Proposed Schedule
- 7. Opportunity for Public Comment Agenda
7 MAP License Amendment - December 10, 2024
© Framatome All right reserved Contents 8 wt.% 235U Enrichment
Type A and Type B Contents
Both Type A and Type B contents shall remain the same material, fuel pellets loaded in rods are uranium oxides primarily as ceramic UO2 and U3O8. The maximum enrichment is being increased to 8.0 wt.% 235U for all fuel assembly arrays and remains within high assay low enriched limits.
Contents Tables for <5 and 8.0 wt.% 235U Material
No changes to content tables
Allowable Quantities of Radioactive Material
No changes to allowable quantities
Gadolina Requirements
Gadolina requirements expanded to all array types for enrichment above 5.0 wt.%
8 MAP License Amendment - December 10, 2024
© Framatome All right reserved
- 1. Framatome Team
- 2. Project Description
- 3. Contents up to 8 wt.% 235U Enrichment
- 4. Criticality Evaluation a) Methods of Analysis b) Benchmarking c) Results
- 5. Drawing Changes
- 6. Proposed Schedule
- 7. Opportunity for Public Comment Agenda
9 MAP License Amendment - December 10, 2024
© Framatome All right reserved Criticality Evaluation
Methods of Analysis
Criticality evaluations performed using SCALE 6.3.1
CSAS6 (Keno-VI) with ENDF/B-VII.1 group library
Gd2O3 fuel rods used for criticality control (multiple configurations evaluated for different enrichments)
Modeling choices shown to be conservative in prior analyses are assumed still conservative for the new payload.
Licensing basis consistent with current SAR methodology to identify the most reactive credible configuration consistent with the chemical and physical form of the material
Configuration based on fuel at T.D. and fully flooded fuel cavity, void in outer cavity for HAC array
Benchmarking
Benchmark experiments were selected from the International Handbook of Evaluated Criticality Safety Benchmark Experiments (IHECSBE).
Methodology used to determine the Upper Safety Limit (USL) is consistent with NUREG-6698, Guide for Validation of Nuclear Criticality Safety Calculational Methodology.
Sensitivity/Uncertainty Analysis are being used to mathematically identify applicable critical experiments to the application model
TSUNAMI-3D (Scale module) used to generate sensitivity data file (SDF) for licensing basis application model
TSUNAMI-IP (Scale module) used to evaluate the similarity of critical experiments to application model (SDFs for critical experiments are taken from IHECSBE)
the bias and uncertainties associated with the calculation method, including use of the administrative subcritical margin of 0.05 to set an upper subcritical limit (USL) of 0.94083
10 MAP License Amendment - December 10, 2024
© Framatome All right reserved Criticality Evaluation
Selection of critical experiments
The critical experiments and the safety basis model need to use the nuclear data in a similar energy-dependent manner; otherwise, an incorrect bias could be generated
163 benchmarks used within the evaluation to calculate the USL
Correlation coefficients (Ck) were determined for each application/experiment model pair
All selected models have significantly more than 20 correlation coefficients above 0.90 showing that selected benchmarks are valid
11 MAP License Amendment - December 10, 2024
© Framatome All right reserved Criticality Evaluation
Results - Keff example
12 MAP License Amendment - December 10, 2024
© Framatome All right reserved Criticality Evaluation
Results - Gadolinia Requirements for >5 wt.% 235U Remaining Arrays
Includes CSI 8.3, 25, and 50 (not shown)
Clarification to be added: Required gadolinia rods may be placed asymmetrically. (Not required to be distributed symmetrically along the major diagonal as currently stated in license)
13 MAP License Amendment - December 10, 2024
© Framatome All right reserved
- 1. Framatome Team
- 2. Project Description
- 3. Contents up to 8 wt.% 235U Enrichment
- 4. Criticality Evaluation a) Methods of Analysis b) Benchmarking c) Results
- 5. Drawing Changes
- 6. Proposed Schedule
- 7. Opportunity for Public Comment Agenda
14 MAP License Amendment - December 10, 2024
© Framatome All right reserved
All changes implemented to facilitate fabrication of new packaging
Drawing 9045393 - BOM
Revised part number of items 53, 54, and 58 to reflect current Cherry Aerospace rivet nomenclature
Revised items 44, 45, 55, and 68 to include OR EQUIV to facilitate procurement of equivalent parts
Revised part number of item 55 to include next size rivet to allow appropriate grip length (with flag note)
Drawing Changes
15 MAP License Amendment - December 10, 2024
© Framatome All right reserved
Drawing 9045402
Removed 1/4 bevel weld callout. The U-channel used for the rail is tapered to 3/16 at the ends where the fillet weld is prescribed.
Drawing Changes
16 MAP License Amendment - December 10, 2024
© Framatome All right reserved
Drawing 9045403
Removed 1/8 weld size callout on flare bevel weld due to thickness of base material of 0.09 Drawing Changes
17 MAP License Amendment - December 10, 2024
© Framatome All right reserved
- 1. Framatome Team
- 2. Project Description
- 3. Contents up to 8 wt.% 235U Enrichment
- 4. Criticality Evaluation a) Methods of Analysis b) Benchmarking c) Results
- 5. Drawing Changes
- 6. Proposed Schedule
- 7. Opportunity for Public Comment Agenda
18 MAP License Amendment - December 10, 2024
© Framatome All right reserved
Schedule:
NRC Submittal - January 31, 2024
Amendment Request - 1 year, approximately January 2025 Proposed Schedule
19 MAP License Amendment - December 10, 2024
© Framatome All right reserved
- 1. Framatome Team
- 2. Project Description
- 3. Contents up to 8 wt.% 235U Enrichment
- 4. Criticality Evaluation a) Methods of Analysis b) Benchmarking c) Results
- 5. Drawing Changes
- 6. Proposed Schedule
- 7. Opportunity for Public Comment Agenda
20 MAP License Amendment - December 10, 2024
© Framatome All right reserved Opportunity for Public Comment
21 MAP License Amendment - December 10, 2024
© Framatome All right reserved Thank You