Hostname: page-component-848d4c4894-nr4z6 Total loading time: 0 Render date: 2024-06-03T02:31:11.657Z Has data issue: false hasContentIssue false
  • English
  • Français

A Probabilistic Model for Degradation of the Engineered Barriers System in the Yucca Mountain Repository

Published online by Cambridge University Press:  17 March 2011

Z. Qin  and
D.W. Shoesmith
Z. Qin
Affiliation:
Department of Chemistry, The University of Western Ontario London, Ontario, Canada, N6A 5B7
D.W. Shoesmith
Affiliation:
Department of Chemistry, The University of Western Ontario London, Ontario, Canada, N6A 5B7
Get access

Abstract

A probabilistic model to predict the lifetimes of the engineered barrier system proposed for the Yucca Mountain repository is described. The model assumes that the titanium Grade-7 drip shield will fail by hydrogen-induced cracking and the Alloy-22 waste package by a combination of passive and crevice corrosion. The model predicts that crevice corrosion of the waste package can be completely avoided ifthe drip shield deflects seepage drips for between 2000 (realistic behaviour) and 6000 years (conservative behaviour). Sensitivity calculations on the crevice corrosion model suggest that early waste package failure is extremely unlikely providing the drip shield performs its function for a minimum of ~ 300 years.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 824: Symposium CC – Scientific Basis for Nuclear Waste Management XXVIII , 2004 , CC1.3
Copyright
Copyright © Materials Research Society 2004

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

1. Gordon, G. M., Corrosion, 58, 811–825 (2002).Google Scholar
2.USDOE OCRWM Report ANL-EBS-MO-000001 REV 00 (2000).Google Scholar
3. Hua, F., Sarver, J., Mohn, W. and Gordon, G., Paper No. 2529, CORROSION 2002, NACE International, Houston, TX (2002).Google Scholar
4.EPRI Report No.1003031 (2002).Google Scholar
5. Hua, F., Mon, K., Pasupathi, P., Gordon, G. and Shoesmith, D. W., Paper No. 4689, CORROSION 2004, NACE International, Houston, TX (2004).Google Scholar
6. Lee, J. H., Bechtel SAIC Report No. ANL-EBS-MD-000003, Rev. 01 (2003).Google Scholar
7. Lee, J. H., Summers, T. and Rebak, R. B., Paper No. 4692, CORROSION 2004, NACE International, Houston, TX (2004).Google Scholar
8. Qin, Z., and Shoesmith, D. W., Proc. of Northern Area Eastern Conf., Ottawa, Canada, NACE International, Houston, TX (2003).Google Scholar
9. Shoesmith, D.W., Noel, J.J., Hardie, D. and Ikeda, B.M., Corrosion Reviews, 18, 331–359 (2000)Google Scholar
10. He, X., Noel, J. J. and Shoesmith, D. W., submitted to Electrochimica Acta (2004).Google Scholar
11. Kehler, B. A., Ilevbare, G. O. and Scully, J. C., in Localized Corrosion, NACE Topical Research Symposium, CORROSION 2001, NACE International, Houston, TX (2001).Google Scholar