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Transmutation of americium in a large sized sodium-cooled fast reactor loaded with nitride 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
KTH, School of Engineering Sciences (SCI), Physics, Reactor Physics.ORCID iD: 0000-0001-6818-5724
2013 (English)In: Annals of Nuclear Energy, ISSN 0306-4549, E-ISSN 1873-2100, Vol. 53, 26-34 p.Article in journal (Refereed) Published
Abstract [en]

We have performed the transient analysis of a large sized sodium-cooled reactor loaded with nitride fuel modified by different fractions of americium. Unprotected loss-of-offsite power, unprotected loss-of-flow and unprotected transient-over-power accidents were considered as the postulated transient and simulated with the SAS4A/SASSYS code based on the geometrical model of a BN1200 type sodium-cooled fast reactor (SFR) with the rated power of 2900 MWth. Safety parameters used in the transient simulation model were obtained from the SERPENT Monte Carlo calculations. If 100 K margin to fuel melting was maintained, 2 wt.% and 6 wt.% Am content could be permitted for the nitride fuel loaded BN1200 operating with the maximum linear power rating of 37 kW/m and 33 kW/m respectively, providing Am transmutation rates of 3.9 kg/TW h(th) and 13.7 kg/TW h(th). These transmutation rates are more than 6 times higher than the ones previously reported for oxide fuel loaded BN600 operating with the maximum linear power ratings of 37 kW/m and metallic fuel loaded Integral Fast Reactor (IFR) operating with the maximum linear power rating of 33 kW/m respectively, being their reference cases with permitting 1 wt.% Am content.

Place, publisher, year, edition, pages
2013. Vol. 53, 26-34 p.
Keyword [en]
BN1200, Nitride fuel, Americium transmutation, Transient analysis
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-120294DOI: 10.1016/j.anucene.2012.08.009ISI: 000315550500004Scopus ID: 2-s2.0-84870179549OAI: oai:DiVA.org:kth-120294DiVA: diva2:614630
Note

QC 20130405

Available from: 2013-04-05 Created: 2013-04-04 Last updated: 2017-12-06Bibliographically approved

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Wallenius, JanneJolkkonen, Mikael

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