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Life cycle assessment on Pyroprocess as a nuclear spent fuel management technology Heetae Kim1 · Tae Kyu Ahn1 · Claudio Tenreiro1,2
1 Department of Energy Science, Sungkyunkwan University, South Korea 2 Facultad de Ingenieria, Universidad de Talca, Chile
AbstractIn this work, we estimate life cycle impact of Pyroprocess to induce the
nuclear technology development to be more sustainable. At first, a
system model was built by using experimental data and demo-scale
inventories. Electricity consumption is collected as a major input data.
The result shows that Electro-refining process emits the largest amount of greenhouse gas.
Result
U TRU Waste
GHG emissions (t CO /1 t U)
Salttreatment
Electrowinning
Electrorefining
Electroreduction
Offtreatment
Voloxi-dationCuttingdecladding
115
59.4
154
62.4
18.630.8
2.64
2-eq
Acknowledgement The authors would like to thank J. Park for her graphical art work. This research was supported; - WCU program (R31-2008-10029) through the NRF funded by Korea the Korea government MEST - Human Resources Development program (No. 20124010203270) of the KETEP grant funded by. Korea
government MKE
Conclusions/Discussions- The system model of Pyroprocess is designed.
- Electro-refining emits the largest amount of greenhouse gas. (hot spot) - Processes dealing with salts cause almost 90% of greenhouse gas emissions. - Various inventories will improve the LCA result. - Salt treatment processes need to improve heat insulation properties and use highly efficient pyrogenetic equipments.
More information
You can check detail supporting materials such as inventories, a detail process scheme, etc
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Background/Introduction
300,000
Year
Open fuel
cycle
U
Nuclear generations
LCA
done
300
Year
Closed
fuel
cycle
U
LCA
not
yet
!!
Ⅲ
Ⅳ
Ⅱ
Ⅰ Recycles nuclear wastes
Less final nuclear wastes
Superior nuclear proliferation resistance
U
Pyroprocess
Shorter cooling time
A key technology of Closed fuel cycle
System description and allocationSpent fuel
TRU
Electro-winning
Voloxidation
Cutting
Recycled U Waste
Salt waste
treatment
Off-gas treatment
Process
Utility
Argon
ETC
HVAC
Crane
Air Supply
Water supply
Illumination
In/out
Hot spot analysis of based on the electricity consumption
Goal & ScopePyroprocess
Centreeco nvent
LCA DB V2
Methodology
U 1 t
1 ton of Uranium
reprocessed Simapro 7
Electro-refining
Electro-reduction