Fuel residence time in BWRs with nitride fuels
2012 (English)In: Annals of Nuclear Energy, ISSN 0306-4549, E-ISSN 1873-2100, Vol. 47, 182-191 p.Article in journal (Refereed) Published
This paper presents a neutronics study of a BWR core with uranium nitride fuels. Replacing the standard UO2 fuel with UN or UN-ZrO2 allows for a higher uranium content, which leads to an increase of the in-core fuel residence time. With the nitride fuels, the total void worth increases and the efficiency of the control rods and burnable poison deteriorates. Taking into account the higher amount of burnable poison needed at the beginning of life, the in-core fuel residence time increases by about 1.4 year comparing to UO2 fuel with the same enrichment. This implies 1.4% higher availability of the plant and it is therefore of economic interest to the nuclear power plant operators. A similar increase of the fuel in-core lifetime in a UO2 core could be reached by an increase of the average enrichment of the oxide fuel by roughly 1%.
Place, publisher, year, edition, pages
2012. Vol. 47, 182-191 p.
BWR, Uranium nitride, Enrichment, Fuel cycle, Neutronics
Other Physics Topics
IdentifiersURN: urn:nbn:se:kth:diva-100775DOI: 10.1016/j.anucene.2012.03.033ISI: 000306448800026ScopusID: 2-s2.0-84861828049OAI: oai:DiVA.org:kth-100775DiVA: diva2:545009
QC 201208172012-08-172012-08-172012-10-04Bibliographically approved