Decomposition Analysis of Void Reactivity Coefficient for Innovative and Modified BWR Assemblies
Joint Authors
Slavickas, Andrius
Pabarčius, Raimondas
Tonkūnas, Aurimas
Stankūnas, Gediminas
Source
Science and Technology of Nuclear Installations
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-03-18
Country of Publication
Egypt
No. of Pages
9
Abstract EN
The decomposition analysis of void reactivity coefficient for innovative BWR assemblies is presented in this paper.
The innovative assemblies were loaded with high enrichment UO2 and MOX fuels.
Additionally the impact of the moderation enhancement on the void reactivity coefficient through a full fuel burnup discharge interval was investigated for the innovative assembly with MOX fuel.
For the numerical analysis the TRITON functional module of SCALE code with ENDF/B-VI cross section library was applied.
The obtained results indicate the influence of the most important isotopes to the void reactivity behaviour over a fuel burnup interval of 70 GWd/t for both UO2 and MOX fuels.
From the neutronic safety concern positive void reactivity coefficient values are observed for MOX fuel at the beginning of the fuel irradiation cycle.
For extra-moderated assembly designs, implementing 8 and 12 water holes, the neutron spectrum softening is achieved and consequently the lower void reactivity values.
Variations in void reactivity coefficient values are explained by fulfilled decomposition analysis based on neutrons absorption reactions for separate isotopes.
American Psychological Association (APA)
Slavickas, Andrius& Pabarčius, Raimondas& Tonkūnas, Aurimas& Stankūnas, Gediminas. 2014. Decomposition Analysis of Void Reactivity Coefficient for Innovative and Modified BWR Assemblies. Science and Technology of Nuclear Installations،Vol. 2014, no. 2014, pp.1-9.
https://search.emarefa.net/detail/BIM-1047722
Modern Language Association (MLA)
Slavickas, Andrius…[et al.]. Decomposition Analysis of Void Reactivity Coefficient for Innovative and Modified BWR Assemblies. Science and Technology of Nuclear Installations No. 2014 (2014), pp.1-9.
https://search.emarefa.net/detail/BIM-1047722
American Medical Association (AMA)
Slavickas, Andrius& Pabarčius, Raimondas& Tonkūnas, Aurimas& Stankūnas, Gediminas. Decomposition Analysis of Void Reactivity Coefficient for Innovative and Modified BWR Assemblies. Science and Technology of Nuclear Installations. 2014. Vol. 2014, no. 2014, pp.1-9.
https://search.emarefa.net/detail/BIM-1047722
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1047722