Hostname: page-component-7b7567c8c-7pwfn Total loading time: 0 Render date: 2026-11-14T09:30:57.238Z Has data issue: false hasContentIssue false
  • English
  • Français

Bounding Analysis for Solubility

Published online by Cambridge University Press:  03 September 2012

T. Ohi and
K. Nakajima
T. Ohi
Affiliation:
Power Reactor and Nuclear Fuel Development Corporation, Tokai-mura, Ibaraki-ken, JAPAN 319–11, ooitakao@tokai.pnc.go.jp.
K. Nakajima
Affiliation:
Nuclear Energy System Incorporation, Tokai-mura, Ibaraki-ken, JAPAN 319–11.
Get access

Abstract

In performance assessment of geological disposal systems for High LevelRadioactive Waste (HLW), the change of environment over the long-term mustbe considered. Therefore, it is necessary to consider a wide range ofparameters concerned with radionuclides migration, especially the dependenceof solubility on geochemical environment. In this study, assuming that therelease rate of the nuclides from buffer material is limited by inventoryultimately, the relationship between the initial inventory and thesolubility that produces a solubility-invariant maximum release rate fromthe buffer is examined by using a simple steady-state analytical solutionwithout decay. As the result, the threshold of “effective” solubility in theperformance assessment of the geological disposal systems for HLW isobtained as a function of initial inventory, distribution coefficient (Kd),diffusion coefficient, and thickness, porosity and density of the buffer.Also, the threshold of “effective” steady dissolution rate corresponding tothe threshold of “effective” solubility is obtained.

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

Article purchase

Temporarily unavailable

References

REFERENCES

1. Neretnieks, I., Diffusivities of Some Constituents in Compacted wet Bentonite Clay and the Impact on Radionuclide Migration in the Buffer, Nuclear Technology, 71 pp. 458–470, (1985).Google Scholar
2. Apted, M. J., Hodgkinson, D. P., Logic Over Rhetoric: The Role of Performance Analysis in Guiding Near-Field Data Collection, Proceedings Nuclear Waste Packaging FOCUS 91, pp. 24–31, (1991).Google Scholar
3. Zavoshy, S. J., Chambre, P. L., and Pigford, T. H., Mass Transfer in a Geologic Environment, Scientific Basis for Nuclear Waste Management VIII, Materials Research Society, Pittsburgh, PA, 44, pp. 311–322, (1985).Google Scholar
4. Pigford, T. H., and Chambre, P. L., Near- Field Mass Transfer in Geologic Disposal Systems A Review, Scientific Basis for Nuclear Waste Management XI, Materials Research Society, Pittsburgh, PA, 112, pp. 125–141, (1988).Google Scholar
5. PNC, Research and Development on Geological Disposal of High-Level Radioactive Waste, PNCTN 1410 93–059, (1993).Google Scholar
6. Ohi, T., Miyahara, K., Naito, M., Umeki, H., Effects of Transport Model Alternatives Incorporating Precipitation on The Performance of Engineered Barriers, High Level Radioactive Waste Management Proceedings of the Seventh Annual International Conference, pp. 274–275, (1996).Google Scholar