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Title: Percolation behavior of tritiated water into a soil packed bed

A large amount of cooling water is used in a D-T fusion reactor. The cooling water will contain tritium with high concentration because tritium can permeate metal walls at high temperature easily. A development of tritium handling technology for confining tritiated water in the fusion facility is an important issue. In addition, it is also important to understand tritium behavior in environment assuming severe accidents. In this study, percolation experiments of tritiated water in soil packed bed were carried out and tritium behavior in soil was discussed. Six soil samples were collected in Hakozaki campus of Kyushu University. These particle densities were of the same degree as that of general soils and moisture contents were related to BET surface area. For two soil samples used in the percolation experiment of tritiated water, saturated hydraulic conductivity agreed well with the estimating value by Creager. Tritium retention ratio in the soil packed bed was larger than water retention. This is considered to be due to an effect of tritium sorption on the surface of soil particles. The isotope exchange capacity estimated by assuming that H/T ratio of supplied tritiated water and H/T ratio of surface water of soil particle was equal wasmore » comparable to that on cement paste and mortar which were obtained by exposure of tritiated water vapor. (authors)« less
Authors:
; ; ;  [1] ;  [2]
  1. Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, Kasuga, Fukuoka (Japan)
  2. Faculty of Engineering, Kyushu University, Motooka Nishi-ku, Fukuoka (Japan)
Publication Date:
OSTI Identifier:
22429722
Resource Type:
Journal Article
Resource Relation:
Journal Name: Fusion Science and Technology; Journal Volume: 67; Journal Issue: 2; Conference: TRITIUM 2013: 10. International Conference on Tritium Science and Technology, Nice Acropolis (France), 21-25 Oct 2013; Other Information: Country of input: France; 5 refs.
Country of Publication:
United States
Language:
English
Subject:
07 ISOTOPES AND RADIATION SOURCES; 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; CEMENTS; DEUTERIUM; D-T REACTORS; ISOTOPE RATIO; PACKED BEDS; SOILS; TRITIUM; TRITIUM OXIDES