2. International Conference for Spent Fuel Management from Nuclear Power Reactor Session 7 “Technological Innovations for Spent Fuel Storage” Meet the Challenges of Spent Fuel Interim Storage by using intensive Innovation
Justo GARCIA
31 May – 4 June 2010
Vienna, Austria
TN INTERNATIONAL

3. Interim Storage technologies
Wet Interim Storage
Dry Interim Storage
Spent fuel storage pool
Spent fuel stored inside racks
AREVA Solutions: Racks and Pools
Metallic casks:
Dual-purpose casks
Passive system, and independent to the plant
Germany, Belgium, Switzerland, Spain, Japan, USA
AREVA Solutions: TN®24 family
Canister systems:
The fuel is stored in a metallic canister, stored inside an overpack
To transport the fuel, the canister is inserted in a transport cask
USA, Spain, Republic of Armenia
AREVA Solutions: NUHOMS® System
Meet the Challenges of Spent Fuel Interim Storage – J. Garcia – IAEA 31 May – 4 June 2010 – Vienna, Austria

4. Innovation – a key driver within the Logistics Business Unit
Innovation within AREVA Logistics BU
An increasing market for fuel management solutions worldwide
Tough Competition
Be ready for higher enrichment, burn-up…
Nuclear Renaissance
Need to anticipate regulatory evolutions
Adaptation to the dry storage market internationalization
Offer competitive casks with larger capacity
Recent increase of massive forged pieces demand in the industry
Design casks compatible with decommissioning strategies
Dry Storage innovative Solutions
To meet all these challenges, the Logistics BU engaged a step of innovation to develop competitive, efficient and relevant transport and storage solutions & underwater storage racks
New Rack Designs
Meet the Challenges of Spent Fuel Interim Storage – J. Garcia – IAEA 31 May – 4 June 2010 – Vienna, Austria

5. TN®DUO, The new line of dual purpose casks
TN®DUO concept
The massive shell is composed by several forged pieces
neutron shielding surrounding the forged shell
Aluminum heat exchanger
basket mainly based on aluminum with boron
Robust to aircraft crash
Retrievability of stored components
Passive system
Same or similar operating procedures as TN24 family
TN®DUO in Transport configuration
& in Storage configuration
Meet the Challenges of Spent Fuel Interim Storage – J. Garcia – IAEA 31 May – 4 June 2010 – Vienna, Austria

6. TN®DUO Basic Concept Shielding of radiation
Vessel in forged steel providing the main gamma shielding
An external layer of neutron shielding resin covered by an outer steel shell
Safe enclosure of radio-active material:
the forged steel body and the lids equipped with metallic gaskets make the containment
Leak tightness
Permanent monitoring system demonstrates the high efficiency of the containment barrier
Subcriticality of the package
Basket made of boronated aluminium and/or stainless steel
Removal of decay heat
Aluminium heat exhanger between the cask body and the cask external surface
Mechanical strength
The shock absorbing covers provide the protection required for transport licensing.
Anti-aircraft crash cover provides the protection against an airplane crash on the storage facility (if required by storage regulation)
Meet the Challenges of Spent Fuel Interim Storage – J. Garcia – IAEA 31 May – 4 June 2010 – Vienna, Austria

7. TN®DUO content BWR version PWR version Cask availability 2015
Capacity:
52 to 68 BWR Intact Fuel Assemblies
Fuel:
Max Burnup: 70 GWd/MTU
Max Initial Enrichment: 5 wt % U235
PWR version
Cask availability 2015
Capacity:
24 to 37 PWR Intact Fuel Assemblies
Fuel:
Max Burnup: 65 GWd/MTU
Max Initial Enrichment: 5 wt % U235
Meet the Challenges of Spent Fuel Interim Storage – J. Garcia – IAEA 31 May – 4 June 2010 – Vienna, Austria

8. The result of an intensive innovation process
TN®DUO Advantages
The result of an intensive innovation process
TN®DUO
Cost effectiveness
Simplification of the cask assembly
New and innovative formed aluminum heat exchangers
Shock absorbing covers are constituted of steel sheets
Security of supply and manufacture and standard manufacturing process
Use of common forged pieces
Time of supply and manufacturing is reduced
Same operating procedures and tools as TN®24 cask family
Meet the Challenges of Spent Fuel Interim Storage – J. Garcia – IAEA 31 May – 4 June 2010 – Vienna, Austria

9. TN®NOVA system, The new line of canister system
Spent fuel stored inside a canister
Metallic storage overpack
Storage in vertical position
Horizontal transfer mode + cask uprighted in a vertical position for storage : no critical lift outdoors.
Robust to aircraft crash
Retrievability of stored components
Passive system
Canister
Transport cask
Storage Overpack
Meet the Challenges of Spent Fuel Interim Storage – J. Garcia – IAEA 31 May – 4 June 2010 – Vienna, Austria

10. TN®NOVA Basic Concept Storage system Main technical features
The welded canister is transported in a transport/transfer cask to the storage site
The canister is then pushed into the TN®NOVA overpack in horizontal position
The TN®NOVA overpack is then uprighted in a vertical position for storage.
Main technical features
Radiation Shielding during storage
TN®NOVA overpack surrounds the canister with steel plates and neutron shielding
Safe enclosure of radioactive material
Canister makes the containment with welded closures
Leak tightness
By multiple welded barriers of the canister / No monitoring required
Subcriticality of the package
Basket made of boronated aluminum and stainless steel
Removal of decay heat during storage
Air circulation by natural convection
Operations: the TN®NOVA overpack is equivalent in terms of function and operational sequence of the NUHOMS® storage module.
Meet the Challenges of Spent Fuel Interim Storage – J. Garcia – IAEA 31 May – 4 June 2010 – Vienna, Austria

11. Dry Shielded Canisters (DSC)
69 BTH DSC
License availability 2010 (Part71)
Available 2013
Capacity:
69 BWR Intact Fuel Assemblies w/ Control Components
Fuel:
Max Burnup: 70 GWd/MTU
Max Initial Enrichment: 5 wt % U235
37PTH DSC
License availability 2010 (Part71)
Capacity:
37 PWR Intact Fuel Assemblies w/ Control Components
Fuel:
Max Burnup: 65 GWd/MTU
Max Initial Enrichment: 5 wt % U235
Meet the Challenges of Spent Fuel Interim Storage – J. Garcia – IAEA 31 May – 4 June 2010 – Vienna, Austria

12. The result of an intensive innovation process
TN®NOVA Advantages
The result of an intensive innovation process
TN®NOVA
Cost effectiveness
Separating transport and storage functions: flexibility to spent fuel strategy
Simple and proven loading procedure
No thermal constraints on the TN®NOVA storage overpack
High loading flexibility
Security of supply and manufacture with common raw goods and standard manufacturing process
Meet the Challenges of Spent Fuel Interim Storage – J. Garcia – IAEA 31 May – 4 June 2010 – Vienna, Austria

13. Underwater Fuel storage Racks
The fuel racks design enables to store fuel assemblies in a spent fuel storage pool
The racks are consisted of stainless steel and poison materials
The heart of the solution is the poison containing plates situated between the spent fuel elements.
Meet the Challenges of Spent Fuel Interim Storage – J. Garcia – IAEA 31 May – 4 June 2010 – Vienna, Austria

14. Underwater Fuel storage Rack Design
The European design consists in:
A stainless steel structure defining adjacent cells (“central structure”),
“Individual tubular structures” (called “sleeves”) inserted in these adjacent cells.
The sleeves are composed of the main elements:
Four angle beams which define the lodgement in which one the fuel assembly is inserted,
Borated plates placed behind the corner beams linked to these beams by stainless steel mounting brackets welded onto the angle beams.
Meet the Challenges of Spent Fuel Interim Storage – J. Garcia – IAEA 31 May – 4 June 2010 – Vienna, Austria

15. Racks for Wet Interim Storage
Thanks to a specific technology developed for the dual purpose cask high capacity baskets, AREVA Logistics BU developed in 18 months 3 rack designs:
European & Chinese Markets
Designs using BSS or boron MMC as poison material
US Market
Design using boron MMC as poison material (NUSTOR™)
AREVA Logistics BU has prepared the most comprehensive rack models in the industry using the state-of-the-art computer codes and analysis techniques.
The criticality analysis for the racks is also state-of-the-art and includes:
The latest international AREVA fission product experimental data which provides the backup for the burn-up credit analysis for the most versatile and dense racks
The use of qualified poison material for criticality protection assurance.
The use of the same readily available poison material used with the Dual purpose casks and Dry Storage Systems designed by AREVA BUL
Meet the Challenges of Spent Fuel Interim Storage – J. Garcia – IAEA 31 May – 4 June 2010 – Vienna, Austria

16. AREVA Logistics BU Racks Advantages
Cost effectiveness with the use of high performance neutron absorbing material “boron MMC”
Significant reduction of weight of the racks that simplify the operations of transportation and handling
Flexibility design: MMC or BSS as poison material
Rack manufactured by AREVA Logistics BU & View of MMC plates
Meet the Challenges of Spent Fuel Interim Storage – J. Garcia – IAEA 31 May – 4 June 2010 – Vienna, Austria

17. Conclusion
A step of innovation has been engaged in order to develop new products and services.
The AREVA Logistics Business Unit is ready to accompany customers challenges and to respond to the future needs …
Meet the Challenges of Spent Fuel Interim Storage – J. Garcia – IAEA 31 May – 4 June 2010 – Vienna, Austria