design of lsds for isotopic fissile assay in spent fuel

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ID: 189145
2013
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Abstract
A future nuclear energy system is being developed at Korea Atomic Energy Research Institute (KAERI), the system involves a Sodium Fast Reactor (SFR) linked with the pyro-process. The pyro-process produces a source material to fabricate a SFR fuel rod. Therefore, an isotopic fissile content assay is very important for fuel rod safety and SFR economics. A new technology for an analysis of isotopic fissile content has been proposed using a lead slowing down spectrometer (LSDS). The new technology has several features for a fissile analysis from spent fuel: direct isotopic fissile assay, no background interference, and no requirement from burnup history information. Several calculations were done on the designed spectrometer geometry: detection sensitivity, neutron energy spectrum analysis, neutron fission characteristics, self shielding analysis, and neutron production mechanism. The spectrum was well organized even at low neutron energy and the threshold fission chamber was a proper choice to get prompt fast fission neutrons. The characteristic fission signature was obtained in slowing down neutron energy from each fissile isotope. Another application of LSDS is for an optimum design of the spent fuel storage, maximization of the burnup credit and provision of the burnup code correction factor. Additionally, an isotopic fissile content assay will contribute to an increase in transparency and credibility for the utilization of spent fuel nuclear material, as internationally demanded.
Reference Key
lee2013nucleardesign Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;YONGDEOK LEE;CHANG JE PARK;HO-DONG KIM;KEE CHAN SONG
Journal Journal of hazardous materials
Year 2013
DOI
10.5516/NET.06.2013.044
URL
http://www.sciencedirect.com/science/article/pii/S1738573315300772
Keywords
atomic power

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