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Upper limits to americium concentrationin large sized sodium-cooled fast reactors loaded with metallic fuel
KTH, School of Engineering Sciences (SCI), Physics, Reactor Physics.
KTH, School of Engineering Sciences (SCI), Physics, Reactor Physics.ORCID iD: 0000-0002-6082-8913
(English)In: Annals of Nuclear Energy, ISSN 0306-4549, E-ISSN 1873-2100Article in journal (Other academic) Submitted
National Category
Physical Sciences
URN: urn:nbn:se:kth:diva-72644OAI: diva2:487864
QS 20120328Available from: 2012-02-01 Created: 2012-02-01 Last updated: 2012-03-28Bibliographically approved
In thesis
1. Transmutation of Am in sodium fast reactors and accelerator driven systems
Open this publication in new window or tab >>Transmutation of Am in sodium fast reactors and accelerator driven systems
2012 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

In this thesis, the feasibility to use sodium cooled fast reactors loaded with MOX, metallic and nitride fuels for efficient transmutation of americium is investigated by performing transient analysis for cases with different americium contents in fuels, using safety parameters obtained with the SERPENT Monte Carlo code. It was then demonstrated that there is no solid limit for the Am introduction into oxide, metallic and nitride fuels that were loaded into sodium fast reactors. Instead, higher Am contents could be permitted if specific levels of power penalty were accepted.

Transient analysis of a new Accelerator Driven System design with higher neutron source efficiency than the reference EFIT-400 design, was also performed. Based on simulation results, the suggested ADS design was proved to survive the full set of transients, preserving 130 K margin to cladding rupture during the most limiting transient.

After comparing Am transmutation performances in SFRs and the suggested ADS, it can be concluded that: 1. Nitride fuel could provide the highest Am transmutation efficiency, when loaded into SFRs; 2. One SFR loaded with nitride fuel is sufficient to transmute Am inventory produced by more than 15 commercial LWRs within the same time period, which is three times higher than the supporting ratio reported for the suggested ADS; 3. The total fraction of ADS power in the power park is half of cases for critical reactors.

Place, publisher, year, edition, pages
Stockholm: KTH Royal Institute of Technology, 2012. xiii, 72 p.
Trita-FYS, ISSN 0280-316X ; 2012:05
Sodium cooled fast reactor, accelerator driven system, americium, transmutation, transient analysis
National Category
Other Physics Topics
urn:nbn:se:kth:diva-72427 (URN)978-91-7501-254-4 (ISBN)
Public defence
2012-02-14, Sal FA31, Roslagstullsbacken 21, AlbaNova, Stockholm, Sweden, 10:15 (English)
QC 20120201Available from: 2012-02-01 Created: 2012-01-31 Last updated: 2012-02-01Bibliographically approved

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