IAEA/USA Interregional course on
Preparations to Ship Spent Nuclear Fuel (1997)
CASK SELECTION
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Contact:
Mr. Keith Brown
Science Applications International Corp.
20201 Century Blvd., Third Floor
Germantown, MD 20874
Tel.: +1-301-353-8343
Fax: +1-301-428-1973
E-mail: Keith_Brown@ccmail.gmt.saic.com
IAEA/USA Interregional Training Course
Technical and Administrative Preparations Required for Shipment of Research Reactor Spent
Fuel to its Country of Origin
13-24 January 1997
Argonne, IL
L.4.1
CASK SELECTION
by
Keith Brown
Science Applications International Corporation
Cask Selection Considerations
- Compatibility with Fuel Assemblies
- Compatibility with Facility
- Availability of Cask
- Personal Preference
Compatibility with Fuel Assemblies
- Physical Dimensions, i.e., Will Assemblies Fit in
the Basket?
- Fissile Content - Grams of U235, Grams of U, Enrichment
- Cool Down Time Requirements
- Decay heat Load
- Activity and Does Rates
Compatibility with Facility
- Crane Capacity
- Maximum and Minimum Crane Hook Height
- Allowable Floor Loading and Spent Fuel Pool Depth
- Physical Size of Doorways
- Clearances For Handing The Cask in the Building, Spent Fuel Storage Pool, and/or Hot Cell
Current Cask Inventory
Cask |
|
Available to Ship MTR |
Available to Ship TRIGA |
Number |
TN7/2 |
NCS |
Currently |
No |
2 |
GNS-11 |
NCS |
Currently |
No |
2 |
IU-04 |
TN |
Currently |
Limited |
5 |
LHRL 120 |
ANSTO |
Certifiable |
No |
1 |
TN 6-1, 6-3 |
NCS |
Certifiable |
Pending |
1 Each |
GE 2000 |
GE |
Currently |
Pending |
2 |
NAC-LWT |
NAC |
Currently |
Pending |
5 |
Transfer System |
NAC |
Currently |
Pending |
1 |
Future Casks Planned
Cask |
Owner |
Available to Ship MTR |
Available to Ship TRIGA | Number Available |
GNS (New) |
NCS |
1997 |
1997 |
2 |
TN (New) |
TN |
1998 |
1998 |
2 |
NL-1/2 |
NAC |
NRU, NRX Only |
No |
5 |
Transfer System |
NCS |
1997 |
1997 |
1 |
GNS-11
Aluminum MTR Elements | LEU | HEU |
Maximum Number of Elements | 33 | 33 |
Maximum Enrichment | 20% | 94% |
Maximum U | 1635 g | 335 g |
Maximum U235 | 323 g | 268 g |
Maximum Decay heat Load | 48.5 W | 48.5 W |
Minimum Cooldown Time | 360 Days | 1808 Days |
Maximum Activity | 1 Pbq | 1 Pbq |
TRIGA
Not Currently Certified for TRIGA Fuel
TN 7/2
Aluminum MTR Elements | |
Maximum Number of Elements | 64 |
Maximum Enrichment | 80-93 |
Maximum U | 363 g |
Maximum U235 | 290 g |
Maximum Decay Heat Load | 125 W |
Minimum Cooling Time | 170 Days |
Maximum Activity | 740 Tbq |
TRIGA
Not Currently Certified for TRIGA Fuel
NAC-LWT
Aluminum MTR Elements | HEU | LEU |
Maximum Number of Elements | 42 (Cropped) 28 (Uncropped) |
42 (Cropped) 28 (Uncropped) |
Maximum Enrichment | 80-94% | 20% |
Maximum U | 377 g | 1722 g |
Maximum Decay Heat Load | 30 w/Element | 24 w/Element |
Minimum Cooling Time | 3 Years | 1 Year |
Maximum Ave. Burnup | 550,000 MWD/MTU | 90,490 MDW/MTU |
TRIGA
Not Currently Certified for TRIGA Fuel - Certification
is
Planned During 1997
IU-04
Aluminum MTR Elements | |
Maximum Number of Elements | 36 in Basket TN 9083 40 in Basket AA 267 |
Maximum Enrichment | 100% |
Maximum U235 Concentration | 0.73 g/cm |
Maximum Decay Heat Load | <132 w/Element (TN 9083) <80 w/Element (AA 267) |
Minimal Fuel Core Thickness | 0.5 mm |
Minimal Cladding Thickness | 0.2 mm |
IU-04 (Cont'd)
TRIGA | |
Maximum Number of Elements | Any number that can be plaed in basket TN 9083, tight or not (144?) |
Cladding | Aluminum |
Composition | |
Uranium | 8% |
Zirconium Hydride | 92% |
Maximal Contents | |
Uranium Weight | <199 g/Element |
Uranium Enrichment | 20% |
GE 2000
Aluminum MTR Elements | HEU | LEU |
Maximum Number of Elements | 42 (Chopped) 21 (UnChopped) |
42 (Chopped) 21 (Unchopped) |
Maximum Enrichment | 93.2% | 20% |
Maximum U235 | 355 g | 355 g |
Maximum Burnup | 533 GWD/MTU | 100 GWD/MTU |
Maximum Decay Heat Load | 35 W | 35 W |
Maximum Cooling Time | 880 Days | 880 Days |
TRIGA
Not Currently Certified for TRIGA Fuel - Application
has been Submitted for Certification of up to 84 TRIGA Elements, Enriched
Between 20% and 93%, with Aluminum, Inconel, or Stainless Steel Cladding