Hostname: page-component-77c89778f8-swr86 Total loading time: 0 Render date: 2024-07-19T09:35:16.217Z Has data issue: false hasContentIssue false
  • English
  • Français

A Modelling and Experimental Study for Long-Term Prediction of Localised Corrosion in Carbon Steel Overpacks for High-Level Radioactive Waste.

Published online by Cambridge University Press:  15 February 2011

A. Hoch ,
A. Honda ,
H. Ishikawa ,
F. Porter ,
S. Sharland  and
N. Taniguchi
A. Hoch
Affiliation:
AEA Technology, Harwell, Oxfordshire, United Kingdom
A. Honda
Affiliation:
Power Reactor & Nuclear Fuel Development Corporation, Tokai Works, Ibaraki-ken, JAPAN
H. Ishikawa
Affiliation:
Power Reactor & Nuclear Fuel Development Corporation, Tokai Works, Ibaraki-ken, JAPAN
F. Porter
Affiliation:
AEA Technology, Harwell, Oxfordshire, United Kingdom
S. Sharland
Affiliation:
AEA Technology, Harwell, Oxfordshire, United Kingdom
N. Taniguchi
Affiliation:
Power Reactor & Nuclear Fuel Development Corporation, Tokai Works, Ibaraki-ken, JAPAN
Get access

Abstract

This paper describes a joint modelling and experimental study for investigation of pit growth in carbon steel High-Level Radioactive Waste overpacks under consideration in Japan. A mathematical model of the growth of corrosion pits in metals has been developed. This model is implemented in the computer program CAMLE, and includes representation of the chemical, electrochemical and migration processes that control pit-growth rates. Experiments to provide key input data for the model are described, in addition to experiments to measure ‘short-term’ pit growth. Predictions from the model are compared with these data. Overall, the comparisons are encouraging and the model shows good potential as a tool for assessment of the long-term corrosion behaviour of overpacks under repository conditions. Future developments of the model to improve agreement are discussed.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 353: Symposium – Scientific Basis for Nuclear Waste Management XVIII , 1994 , 703
Copyright
Copyright © Materials Research Society 1995

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.)

References

REFERENCES

1 Sharland, S.M., Jackson, CP. and Diver, A.J., Corros. Sci. 29.(9), 149 (1989).Google Scholar
2 Turnbull, A. and Thomas, J.G.N., J.Electrochem. Soc. 129, 1412 (1980).Google Scholar
3 Jackson, CP, –The TGSL Finite-Element Subroutine Library’, UKAEA Report AERE-R 10713 (1982).Google Scholar
4. Turnbull, A. and Gardiner, M.R., Corros. Sci 22, 661 (1982).Google Scholar
5 Sharland, S.M., Naish, C.C., Taylor, KJ. and Marsh, G.P., Proc. NACE conference on Lifetime Assessment of Corrodible Structures, Cambridge, UK 1991, in press.Google Scholar
6 Marsh, G.P., Bland, I.D. and Taylor, KJ., Br. Corros. J., Vol 23. No. 3, p. 157, 1988.Google Scholar
7 Marsh, G.P., Bland, LD., Desport, J.A., Naish, C.C., Westcott, C. and Taylor, KJ., European Appl. Res. Rept-Nucl. Sci. Technol. 5 (2), p 223–252 (1983).Google Scholar
8 Gumbel, EJ., Statistics of Extremes. Publ. Columbia University Press, New York (1958).Google Scholar
9 Tsuge, H., Akashi, M., Nakajima, H., Ikenga, K., Imagawa, H. and Shibata, T.., Micro Computer Code ‘EVAN’ (Tokyo, Maruzen Publ., (1989)).Google Scholar
10 Nodaka, M., shikawa, HJ, Yusa, Y. and Sasaki, N., ‘Corrosion Studies on Candidate Overpack Materials’, ASME/JSME/AESJ Joint International Waste Management Conference Proc. p 589–593 (1989).Google Scholar