Hostname: page-component-cd9895bd7-dzt6s Total loading time: 0 Render date: 2024-12-28T21:59:37.215Z Has data issue: false hasContentIssue false
  • English
  • Français

Evolution of Chemistry and Its Effects on the Corrosion of Engineered Barrier Materials

Published online by Cambridge University Press:  19 October 2011

Darrell Dunn ,
Yi-Ming Pan ,
Xihua He ,
Lietai Yang  and
Roberto Pabalan
Darrell Dunn
Affiliation:
ddunn@swri.org, Southwest Research Institute, Materials Engineering, CNWRA Bldg. 57, 6220 Culebra Rd., San Antonio, TX, 78238-5166, United States, 210-522-6090, 210-522-6965
Yi-Ming Pan
Affiliation:
ypan@swri.org, Center for Nuclear Waste Regulatory Analyses, San Antonio, TX, 78238, United States
Xihua He
Affiliation:
xhe@swri.org, Center for Nuclear Waste Regulatory Analyses, San Antonio, TX, 78238, United States
Lietai Yang
Affiliation:
ltyang@swri.org, Center for Nuclear Waste Regulatory Analyses, San Antonio, TX, 78238, United States
Roberto Pabalan
Affiliation:
rpabalan@swri.org, Center for Nuclear Waste Regulatory Analyses, San Antonio, TX, 78238, United States
Get access

Abstract

The evolution of environmental conditions within the emplacement drifts of a potential high-level waste repository at Yucca Mountain, Nevada, may be influenced by several factors, including the temperature and relative humidity within the emplacement drifts and the composition of seepage water. The performance of the waste package and the drip shield may be affected by the evolution of the environmental conditions within the emplacement drifts. In this study, tests evaluated the evolution of environmental conditions on the waste package surfaces and in the surrounding host rock. The tests were designed to (i) simulate the conditions expected within the emplacement drifts; (ii) measure the changes in near-field chemistry; and (iii) determine environmental influence on the performance of the engineered barrier materials. Results of tests conducted in this study indicate the composition of salt deposits was consistent with the initial dilute water chemistry. Salts and possibly concentrated calcium chloride brines may be more aggressive than either neutral or alkaline brines.

Keywords

corrosionwaste managementpackaging
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 985: Symposium NN – Scientific Basis for Nuclear Waste Management XXX , 2006 , 0985-NN08-10
Copyright
Copyright © Materials Research Society 2007

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. Anderson, M. J., Brown, N. R., Cloud, J. D., Russell, P. R. Z., and Trautner, L. J.. Proceedings of 10th High-Level Radioactive Waste Management Conference, Las Vegas, Nevada, March 30ñApril 3, 2003. La Grange Park, Illinois: American Nuclear Society. pp. 714–719. 2003.Google Scholar
2. DOE. DOE/RW–0539–1, “Yucca Mountain Science and Engineering Report: Technical Information Supporting Site Recommendation Consideration,” Rev. 1, Las Vegas, Nevada: DOE, Office of Civilian Radioactive Waste Management, 2002.Google Scholar
3. Bechtel SAIC Company, LLC. “Technical Basis Document No. 6: Waste Package and Drip Shield Corrosion.” Rev. 1. Las Vegas, Nevada: Bechtel SAIC Company, LLC. 2003.Google Scholar
4. NRC. NUREGñ1762, “Integrated Issue Resolution Status Report.” Rev. 1. Washington, DC: NRC. April 2005.Google Scholar
5. Dunn, D.S., Pensado, O., Pan, Y.-M., Yang, L. T., and He, X.. Scientific Basis for Nuclear Waste Management XXIX, P., Van Iseghem, ed, Warrendale, Pennsylvania: Materials Research Society Symposium Proceedings, Vol.932, pp. 853–860. 2006.Google Scholar
6. He, X. and Dunn, D. S.. CORROSION/2006 Paper No. 618. Houston, Texas: NACE International. 2006.Google Scholar
7. Dunn, D.S., Yang, L., Wu, C., and Cragnolino, G. A.. Scientific Basis for Nuclear Waste Management XXVIII, San Francisco, California, April 13–16, 2004. Symposium Proceedings 824. J. M. Hanchar, S. Stroes-Gascoyne, and L. Browning, eds. Warrendale, Pennsylvania: Materials Research Society. pp. 33–38. 2004.Google Scholar
8. Chiang, K. T., Dunn, D. S., and Cragnolino, G. A.. CORROSION/2006 Paper No. 06506 Houston, Texas: NACE International. 2006.Google Scholar
9. Shukla, P. K., Dunn, D. S., Chiang, K. T., and Pensado, O., CORROSION/2006 Paper No. 06502. Houston, Texas: NACE International. 2006.Google Scholar
10. Dunn, D. S., Pan, Y.-M., Chiang, K. T., and Cragnolino, G. A.. CORROSION/2006 Paper No. 06509. Houston, Texas: NACE International. 2006.Google Scholar
11. Estill, J. C., King, K. J., Fix, D. V., Spurlock, D. G., Hurst, G. A., Gordon, S. R., McCright, R. D., Rebak, R. B., and Gordon, G. M.. CORROSION/2002 Paper No. 02535. Houston, Texas: NACE International. 2002.Google Scholar
12. Rard, J. A. “Results from Boiling Temperature Measurements for Saturated Solutions in the Systems NaCl + KNO3 + H2O, NaNO3 + KNO3 + H2O and NaCl + NaNO3 + KNO3 + H2O.” UCRL–TR–207054. Livermore, California: Lawrence Livermore National Laboratory. 2004.Google Scholar
13. Bechtel SAIC Company, LLC. “Technical Basis Document No. 5: In-Drift Chemical Environment.” Rev. 1. Las Vegas, Nevada: Bechtel SAIC Company, LLC. 2003.Google Scholar
14. Dunn, D. S., Pensado, O., Pan, Y.-M., Pabalan, R. T., Yang, L., He, X., and Chiang, K. T.. “Passive and Localized Corrosion of Alloy 22—Modeling and Experiments.” CNWRA 2005–02. San Antonio, Texas: CNWRA. 2005.Google Scholar
15. Yang, I.C., Peterman, Z. E., Scofield, K. M.. Journal of Contaminant Hydrology. Vol.62–63. pp. 361–380. 2003.Google Scholar
16. Yang, I. C., Yu, P., Rattray, G. W., Ferarese, J. S., and Ryan, J. N.. “Hydrochemical Investigations in Characterizing the Unsaturated Zone at Yucca Mountain, Nevada.” U.S. Geological Survey Water-Resources Investigations Report 98–4132. Denver, Colorado: U.S. Geological Survey. 1998.Google Scholar
17. Yang, I. C., Rattray, G. W., and Pei, Y.. “Interpretation of Chemical and Isotopic Data from Boreholes in the Unsaturated Zone at Yucca Mountain, Nevada.” U.S. Geological Survey Water-Resources Investigations Report 96–4058. Denver, Colorado: U.S. Geological Survey. 1996.Google Scholar
18. Hardie, L. A. and Eugster, H. P. Mineralogical Society of America Special Paper. Vol.3, pp. 273–290. 1970.Google Scholar