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
This document and all information contained herein is intellectual proprietary to TN International.
They shall not be disclosed, in whole or in part, without its authorisation.
Interim Storage technologies
2 technologies
Wet Interim Storage
Spent fuel storage pool
Spent fuel stored inside racks
AREVA Solutions: Racks and
Pools
Dry Interim Storage
Metallic casks:



 AREVA Solutions: TN®24 family
Canister systems:




TN INTERNATIONAL
Dual-purpose casks
Passive system, and independent to the plant
Germany, Belgium, Switzerland, Spain, Japan, USA
The fuel is stored in a metallic canister, stored inside an overpack
To transport the fuel, the canister is inserted in a transport cask
Passive system, and independent to the plant
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
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This document and all information contained herein is intellectual proprietary to TN International.
They shall not be disclosed, in whole or in part, without its authorisation.
Innovation
within AREVA Logistics BU
Innovation – a key driver within the
Logistics Business Unit
An increasing market for
fuel management solutions
worldwide
Nuclear Renaissance
Tough Competition
Be ready for higher enrichment,
burn-up…
Need to anticipate regulatory evolutions
Dry Storage innovative
Solutions
New Rack Designs
TN INTERNATIONAL
Adaptation to the dry storage market
internationalization
Offer competitive casks with
larger capacity
Recent increase of
Design casks compatible
massive forged pieces
with decommissioning
demand in the industry
strategies
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
Meet the Challenges of Spent Fuel Interim Storage – J. Garcia – IAEA 31 May – 4 June 2010 – Vienna, Austria
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This document and all information contained herein is intellectual proprietary to TN International.
They shall not be disclosed, in whole or in part, without its authorisation.
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
TN INTERNATIONAL
Meet the Challenges of Spent Fuel Interim Storage – J. Garcia – IAEA 31 May – 4 June 2010 – Vienna, Austria
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This document and all information contained herein is intellectual proprietary to TN International.
They shall not be disclosed, in whole or in part, without its authorisation.
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)
TN INTERNATIONAL
Meet the Challenges of Spent Fuel Interim Storage – J. Garcia – IAEA 31 May – 4 June 2010 – Vienna, Austria
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This document and all information contained herein is intellectual proprietary to TN International.
They shall not be disclosed, in whole or in part, without its authorisation.
TN®DUO content
BWR version
PWR version
Cask availability 2015
Cask availability 2015
Capacity:
Capacity:
 52 to 68 BWR Intact
 24 to 37 PWR Intact
Fuel Assemblies
Fuel Assemblies
Fuel:
Fuel:
 Max Burnup: 70
 Max Burnup: 65
GWd/MTU
GWd/MTU
 Max Initial
 Max Initial
Enrichment: 5 wt %
U235
Enrichment: 5 wt %
U235
TN INTERNATIONAL
Meet the Challenges of Spent Fuel Interim Storage – J. Garcia – IAEA 31 May – 4 June 2010 – Vienna, Austria
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This document and all information contained herein is intellectual proprietary to TN International.
They shall not be disclosed, in whole or in part, without its authorisation.
TN®DUO Advantages
The result of an intensive innovation process
 Cost effectiveness
TN®DUO
 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
TN INTERNATIONAL
Meet the Challenges of Spent Fuel Interim Storage – J. Garcia – IAEA 31 May – 4 June 2010 – Vienna, Austria
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This document and all information contained herein is intellectual proprietary to TN International.
They shall not be disclosed, in whole or in part, without its authorisation.
TN®NOVA system,
The new line of canister system
TN®NOVA 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
TN INTERNATIONAL
Meet the Challenges of Spent Fuel Interim Storage – J. Garcia – IAEA 31 May – 4 June 2010 – Vienna, Austria
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This document and all information contained herein is intellectual proprietary to TN International.
They shall not be disclosed, in whole or in part, without its authorisation.
TN®NOVA Basic Concept
Storage system
 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.
TN INTERNATIONAL
Meet the Challenges of Spent Fuel Interim Storage – J. Garcia – IAEA 31 May – 4 June 2010 – Vienna, Austria
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This document and all information contained herein is intellectual proprietary to TN International.
They shall not be disclosed, in whole or in part, without its authorisation.
Dry Shielded Canisters (DSC)
69 BTH DSC
37PTH DSC
License availability 2010
(Part71)
License availability 2010
(Part71)
Available 2013
Capacity:
Capacity:
 37 PWR Intact Fuel
Assemblies w/ Control
Components
 69 BWR Intact Fuel
Assemblies w/ Control
Components
Fuel:
 Max Burnup: 65
Fuel:
 Max Burnup: 70
GWd/MTU
 Max Initial Enrichment:
GWd/MTU
 Max Initial Enrichment:
5 wt % U235
5 wt % U235
TN INTERNATIONAL
Meet the Challenges of Spent Fuel Interim Storage – J. Garcia – IAEA 31 May – 4 June 2010 – Vienna, Austria
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This document and all information contained herein is intellectual proprietary to TN International.
They shall not be disclosed, in whole or in part, without its authorisation.
TN®NOVA Advantages
The result of an intensive innovation process
 Cost effectiveness
 Separating transport and storage functions:
TN®NOVA
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
TN INTERNATIONAL
Meet the Challenges of Spent Fuel Interim Storage – J. Garcia – IAEA 31 May – 4 June 2010 – Vienna, Austria
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This document and all information contained herein is intellectual proprietary to TN International.
They shall not be disclosed, in whole or in part, without its authorisation.
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.
TN INTERNATIONAL
Meet the Challenges of Spent Fuel Interim Storage – J. Garcia – IAEA 31 May – 4 June 2010 – Vienna, Austria
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This document and all information contained herein is intellectual proprietary to TN International.
They shall not be disclosed, in whole or in part, without its authorisation.
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.
TN INTERNATIONAL
Meet the Challenges of Spent Fuel Interim Storage – J. Garcia – IAEA 31 May – 4 June 2010 – Vienna, Austria
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This document and all information contained herein is intellectual proprietary to TN International.
They shall not be disclosed, in whole or in part, without its authorisation.
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
TN INTERNATIONAL
Meet the Challenges of Spent Fuel Interim Storage – J. Garcia – IAEA 31 May – 4 June 2010 – Vienna, Austria
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This document and all information contained herein is intellectual proprietary to TN International.
They shall not be disclosed, in whole or in part, without its authorisation.
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
TN INTERNATIONAL
Meet the Challenges of Spent Fuel Interim Storage – J. Garcia – IAEA 31 May – 4 June 2010 – Vienna, Austria
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This document and all information contained herein is intellectual proprietary to TN International.
They shall not be disclosed, in whole or in part, without its authorisation.
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 …
TN INTERNATIONAL
Meet the Challenges of Spent Fuel Interim Storage – J. Garcia – IAEA 31 May – 4 June 2010 – Vienna, Austria
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