Multirecycling of Pu, Am and Cm in BWR
2013 (English)In: Annals of Nuclear Energy, ISSN 0306-4549, E-ISSN 1873-2100, Vol. 58, 255-267 p.Article in journal (Refereed) Published
We have investigated neutronics aspects of multirecycling of Pu, Am and Cm in BWRs, employing three uranium and three thorium-supported transmutation fuels. Our results show, that thorium-based cores allow for higher shares of MA in the fuel and thereby higher MA incineration without encountering a positive total void worth at any point of the multirecycling. In the uranium-based configuration the total void worth sets the limit on the MA share around 2.45%. The thorium-based fuels also exhibit a stronger Doppler feedback and somewhat degraded reactivity as compared to uranium-fuels. The alpha-heating in the fuel reaches equilibrium after six cycles, maintaining values of 24-31 W/kg(FUEL) in the uranium-based configurations and 32-37 W/kg(FUEL) in the thorium-based configurations. The neutron emission keeps rising through the multirecycling, the maximum value reached in the XV cycle ranges from 1.4 x 10(6) to 1.7 x 10(6) n/s/g for uranium fuels and 2 x 10(6) n/s/g for the thorium-based fuels.
Place, publisher, year, edition, pages
Pergamon Press, 2013. Vol. 58, 255-267 p.
Transmutation, Am, Cm, TRU, BWR
Other Physics Topics
IdentifiersURN: urn:nbn:se:kth:diva-103091DOI: 10.1016/j.anucene.2013.03.024ISI: 000320481600033ScopusID: 2-s2.0-84876270150OAI: oai:DiVA.org:kth-103091DiVA: diva2:558576
QC 20130729. Updated from submitted to published.2012-10-042012-10-042013-07-29Bibliographically approved