ML18030A944
| ML18030A944 | |
| Person / Time | |
|---|---|
| Site: | 07109261 |
| Issue date: | 01/30/2018 |
| From: | Pierre Saverot Spent Fuel Licensing Branch |
| To: | Hsia A Division of Spent Fuel Management |
| Saverot P | |
| Shared Package | |
| ML18030A942 | List: |
| References | |
| EPID L-2018-LLA-0001 | |
| Download: ML18030A944 (18) | |
Text
a generation ahead by design HI-STAR 100 Transportation CoC (9261) Amendment 11 HI-STAR 100 Version MB Pre-Submittal Presentation to NRC January 23, 2018 Holtec copyrighted material
a generation ahead by design Agenda
- Amendment 11 Proposed Change
- Design Overview HI-STAR 100MB and Fuel Packages
- Technical disciplines, criteria and methods
- Structural
- Thermal
- Shielding
- Criticality
- Containment
- Summary and Schedule 2
Holtec copyrighted material
a generation ahead by design HI-STAR 100 Transport CoC (9261)
Amd. 11 Proposed Change HI-STAR 100 Version MB (HI-STAR 100MB)
HI-STAR 100MB is an enhanced version of the HI-STAR 100 transport package initially licensed by the NRC in 1998.
Enhancements focus on HBF transportation Based on HI-STAR 190 and HI-STAR 180/180D Same Cavity Inner Diameter as the HI-STAR 100.
Suitable to transport all currently licensed MPCs for the HI-STAR 100 Single Lid (HI-STAR 190, HI-STAR 100) and Double Lid (HI-STAR 180 and 180D) versions Two cask length (HI-STAR 190)
MPC-32M Fuel Package 32 PWR assembly MPC with a Metamic Basket, enhanced version of the MPC-32 currently approved Similar to MPC-68M for MPC-68 in the HI-STORM 100 F-24M and F-32M Fuel packages Bare Metamic Baskets for 24 and 32 PWR assemblies Similar to HI-STAR 180 baskets Amendment focusses on approval of those designs 3
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a generation ahead by design HI-STAR 100MB
- Two Cavity Lengths
- Type XL - Extra Long for MPCs
- Type SL - Short Length for Bare Baskets 4
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a generation ahead by design HI-STAR 100MB Single and Double Lid Designs 5
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a generation ahead by design HI-STAR 100MB Cask Containment Standard Holtec Design Same as HI-STAR 60, 100, 180, 180D, 190 Components include:
Containment Shell Baseplate Top Forging Bolted Closure Lids Double Lid for Bare Basket (Viz, HI-STAR 180, 180D)
Single Lid for MPC (Viz, HI-STAR 100, 190)
Double elastomeric seals for each closure lid Forgings and Shells connected by welds 6
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a generation ahead by design HI-STAR 100MB Cask Major Shielding Components
- Same shielding design as HI-STAR 190
- Lead for gamma shielding
- Holtite-B for neutron shielding 7
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a generation ahead by design HI-STAR 100MB Fuel Packages
- Amendment 11 is focused on design approval. Other MPCs currently qualified for the HI-STAR 100 and/or HI-STORM 100 will be added in a future amendment 8
Canister/
Basket ID Fuel Type Fuel Package Type Max number of fuel assemblies in the Fuel Package Basket structural Material MPC-32M PWR MPC 32 Metamic-HT F-32M PWR Bare Basket 32 Metamic-HT F-24M PWR Bare Basket 24 Metamic-HT Holtec copyrighted material
a generation ahead by design HI-STAR 100MB Fuel Packages
- F-24M Basket
- F-32M Basket 9
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a generation ahead by design HI-STAR 100 MB High Burnup Fuel / Moderator Exclusion
- Bare Basket: Approach Identical to that for HI-STAR 180 and HI-STAR 180D.
- Second bolted lid provides the additional water barrier credited for moderator exclusion under accident conditions.
- MPC: Approach Identical to that for HI-STAR 190.
- MPC lid provides the additional water barrier credited for moderator exclusion under accident conditions.
- Additional safety analyses provide Defense-in-depth
- Fuel rod with degraded material properties under axial load.
- Criticality evaluations assuming fuel reconfigurations.
10 Holtec copyrighted material
a generation ahead by design HI-STAR 100MB Structural Criteria, Modeling, Methodology
- Predominantly following HI-STAR 190
- Acceptance Criteria
- General Criteria: Type B(U)F Provisions of 10CFR71
- Containment Integrity: ASME B&PV Code Division 1 Subsection NB
- Closure Lid Seal Joint: remains leaktight under NCT and HAC
- Fuel Basket: Basket deflection based criterion - Global Avg. permanent deformation of panel below 0.5 mm.
- Shielding Components: Remain functional after impactive events.
- Defense in Depth Fuel Assembly Integrity: Fuel pin evaluation
> Strain Limit of 1.7%: Same as HI-STAR 180 and further endorsed by NUREG/CR-7198 (2015).
- Impact Limiters: Sufficient energy absorption to protect fuel pins, fuel basket and containment boundary and to maintain attachment to the cask.
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a generation ahead by design HI-STAR 100MB Structural Criteria, Modeling, Methodology (Continued)
- Safety Analysis Approach: Same as HI-STAR 180/180D/190
- FEM (LS-DYNA/ANSYS), Hand Calculations, and Comparative Evaluations
- 10CFR71.71 and 10CFR71.73 Dynamic Analysis
> 0.3 meter drop (horizontal cask)
> 9 meter drop (side, end, slapdown)
> 1 meter puncture on cask outer closure lid - top end down and 1 meter puncture on enclosure shell - side drop
- Static Analysis
> Design pressure, lifting, immersion, component stability, fire accident, etc.
summarized in SAR with separate supporting report (methodology used previously for HI-STAR 180,180D and 190) 12 Holtec copyrighted material
a generation ahead by design HI-STAR 100MB Thermal Criteria, Modeling, Methodology Acceptance Criteria
- Cask Components Temperature Limits are the same as those presented in HI-STAR 190 SAR
- PCT Limits Per ISG-11, Revision 3 Safety Analysis Approach
- Same as HI-STAR 180D/190, ANSYS-FLUENT CFD Analyses
- For normal conditions of transport, a heat event consisting of an ambient temperature of 38 oC (100 oF) in still air and prescribed insolation is evaluated [§71.71(c)(1)].
- For normal conditions of transport, a cold event consisting of an ambient temperature of -40 oC (-40 oF) in still air and shade must be evaluated [§71.71(c)(2)].
- For hypothetical accident conditions, a thermal event consisting of a fully engulfing hydrocarbon fuel/air fire with an average emissivity coefficient of at least 0.9, with an average flame temperature of at least 802oC(1475 oF) for a period of 30 minutes
[§71.73(c)(4)].
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a generation ahead by design HI-STAR 100MB Shielding Criteria, Modeling, Methodology
- Shielding Criteria, Modeling, Methodology
- Acceptance Criteria
- Standard
> Normal Conditions of Transportation: 10 CFR 71.51(a)(1) and 71.47(b)
> Hypothetical Accident Conditions: 10 CFR 71.51(a)(2)
- Safety Analysis Approach
- MCNP5 Dose Rate Calculations
- TRITON/ORIGEN/ORIGAMI (Scale 6.21) Source Term Calculations
- Adopted from HI-STAR 190 and HI-STAR 80 SAR 14 Holtec copyrighted material
a generation ahead by design HI-STAR 100MB Criticality Criteria, Modeling, Methodology
- Acceptance Criteria
- 10CFR71.55 and 71.59
- Maximum Keff <= 0.95, including all biases and uncertainties for 95%
probability at a 95-percent confidence level.
- Safety Analysis Approach
- All Monte Carlo calculations performed using MCNP5.
- Utilize ISG-8 Rev. 3 for Burnup Credit.
- Normal and Accident Conditions analyses same as HI-STAR 80 and HI-STAR 190.
- Efficiency through referencing HI-STAR 190 15 Holtec copyrighted material
a generation ahead by design HI-STAR 100MB Containment Criteria, Modeling, Methodology
- Acceptance Criteria
- Design and Testing to ANSI N14.5 reference leakage rate of Leaktight.
- Package maintains leaktightness under normal and accident condition events.
- Safety Analysis Approach
- Same as HI-STAR 80, 100 and 190.
- Structural (and thermal) evaluation confirms containment boundary integrity under normal and accident conditions of transport.
16 Holtec copyrighted material
a generation ahead by design HI-STAR 100MB Summary
- HI-STAR 100MB is an enhanced version of the HI-STAR 100 transport package initially licensed by the NRC in 1998, with a main focus on HBF transportation
- Fuel Packages include an MPC and bare baskets
- HI-STAR 100MB and fuel package designs are directly based on current designs approved by US NRC (HI-STAR 100, 180, 180D, 190). This should allow for an efficient review process.
- Planned Submittal February 2018 17 Holtec copyrighted material
a generation ahead by design HI-STAR 100MB Questions / Discussions Thank you!
18 Holtec copyrighted material