ML20132A310
| ML20132A310 | |
| Person / Time | |
|---|---|
| Issue date: | 04/28/2020 |
| From: | John Mckirgan Storage and Transportation Licensing Branch |
| To: | |
| NJDevaser NMSS/DFM/STL 415.5196 | |
| References | |
| Download: ML20132A310 (9) | |
Text
NRC Reviews of HALEU Fuels John McKirgan, Chief Storage and Transportation Licensing Branch Division of Fuel Management Office of Nuclear Material Safety and Safeguards U.S. Nuclear Regulatory Commission Nuclear Energy Institute HALEU Workshopll April 28 - 29, 2020
Agenda
- Review process
- Enriched feed material
- Items to note during the NRC review 2
Key Messages
- Early engagement on design and certification strategy
- Performance-based regulations sufficient to certify transportation packages for new fuel designs
- NRC co-regulates transportation with the U.S. Department of Transportation 3
NRCs Fuel Transportation Responsibilities
- Co-regulated by NRC and USDOT
- Memorandum of Understanding lays out the agencies' responsibilities
- DOT regulates carriers, modes of transport (rail, road, air, etc.)
- NRC establishes design standards for fuel transportation packages
- Any entity licensed to possess commercial fuel is granted a general license to transport licensed material in an NRC-approved package
- Fuel is transported in packages evaluated against hypothetical accident conditions, including:
- free-drop onto hard surface, and puncture impact
- fire and water immersion 4
Transportation Tests
- Normal conditions of transport (10 CFR 71.71)
- Hot and cold temperatures
- Reduced and increased external pressure
- Vibration
- Water spray
- Free drop (1 to 4 feet)
- Corner drop
- Compression test
- Penetration test
- Hypothetical accident conditions (10 CFR 71.73)
- 30-foot drop test
- 40-inch puncture test
- 30-minute fire at 1,475 degrees Fahrenheit
- Immersion test 5
Transportation Package Approval Criteria
- Package performance criteria
- Criticality safety
- Single package
- Array of packages
- Shielding
- Dose rates in 10 CFR 71.47, External Radiation Standards for All Packages
- ContainmentType B packages only
- Leakage rate testing for Type B packages (10 CFR 71.51, Additional Requirements for Type B Packages) 6
Transport of Enriched Feed Material
- 5B cylinder
- 30B cylinder
- New 30-inch cylinder
- Uranium Dioxide (UO2)/Uranium Metal
- Pellet and powder packages for low-enriched (non-HALEU) material
- Low-enriched liquid uranyl nitrate 7
Building the safety case
- Crediting structural integrity for criticality safety
- Fuel/fuel assembly structure
- Compensation for lack of critical benchmarks
- Increased margin for keff above 5%.
- Sensitivity/uncertainty analysis tools
- New critical experiments
- REMINDER: Early engagement on design and certification strategy 8
Transportation Additional Information
- For additional information or if you have any questions contact Bernie White
- Bernard.White@nrc.gov
- (301) 415-6577
- For reference, see 2019 NRC RIC Presentation:
- Dry Cask Storage and Transportation Considerations for New Fuel Designs
- At ADAMS Accession Number: ML20111A297 9