Hostname: page-component-cd9895bd7-7cvxr Total loading time: 0 Render date: 2024-12-30T16:28:32.554Z Has data issue: false hasContentIssue false
  • English
  • Français

Evolution of Solution Chemistry through Interactions with Waste Package Internal Structural Components

Published online by Cambridge University Press:  21 March 2011

Y.-M. Pan ,
C.S. Brossia ,
G.A. Cragnolino ,
D.S. Dunn ,
V. Jain  and
N. Sridhar
Y.-M. Pan
Affiliation:
Center for Nuclear Waste Regulatory Analyses (CNWRA)Southwest Research Institute 6220 Culebra Road, San Antonio, TX 78238-5166, USA
C.S. Brossia
Affiliation:
Center for Nuclear Waste Regulatory Analyses (CNWRA)Southwest Research Institute 6220 Culebra Road, San Antonio, TX 78238-5166, USA
G.A. Cragnolino
Affiliation:
Center for Nuclear Waste Regulatory Analyses (CNWRA)Southwest Research Institute 6220 Culebra Road, San Antonio, TX 78238-5166, USA
D.S. Dunn
Affiliation:
Center for Nuclear Waste Regulatory Analyses (CNWRA)Southwest Research Institute 6220 Culebra Road, San Antonio, TX 78238-5166, USA
V. Jain
Affiliation:
Center for Nuclear Waste Regulatory Analyses (CNWRA)Southwest Research Institute 6220 Culebra Road, San Antonio, TX 78238-5166, USA
N. Sridhar
Affiliation:
Center for Nuclear Waste Regulatory Analyses (CNWRA)Southwest Research Institute 6220 Culebra Road, San Antonio, TX 78238-5166, USA
Get access

Abstract

The chemistry of the aqueous environment inside any breached waste packages is critical to the release of radionuclides from the waste packages for high-level waste disposal. A corrosion test cell that simulates some aspects of the internal geometry of the waste packages has been designed to investigate changes in the in-package solution chemistry. A series of tests was conducted to evaluate solution chemistry variations as a function of applied potential and temperature using a specimen of Type 316L stainless steel with a predrilled hole as a simulated pit. A micro-syringe was used to extract solutions from inside and outside the pit. The solutions were analyzed for cation concentrations using capillary electrophoresis, and the pH was measured using a micro-electrode. Preliminary measurements showed substantially high cation concentrations inside the pit due to anodic dissolution of Type 316L stainless steel. The solution pH became considerably acidic, reaching a value of 2.6. These results suggest that interactions of waste package internal structural components with incoming water may have significant influence on the evolution of water chemistry and the subsequent corrosion of waste forms such as spent nuclear fuel.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 713: Symposium JJ – Scientific Basis for Nuclear Waste Management XXV , 2002 , JJ1.10
Copyright
Copyright © Materials Research Society 2002

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. In-Package Chemistry for Waste forms, ANL–EBS–MD–000056. Revision 00. (CRWMS M&O, Las Vegas, NV, 2001).Google Scholar
2. Tsuru, T., Hashimoto, K., and Haruyama, S. in Proceedings of Critical Issues in Reducing the Corrosion of Steels, edited by Leigheiser, H. and Haruyama, S. (NACE International, Houston, TX, 1985) pp. 110–120.Google Scholar
3. Brossia, S. and R.Kelly, G. in Critical Factors in Localized Corrosion II, edited by Natishan, P.M.et al. (The Electrochemical Society, Pennington, NJ, 1996) pp. 201–217.Google Scholar
4. Suzuki, T. M., Yamabe, T., M., and Kitamura, Y., Corrosion 29, 18–22 (1973).Google Scholar
5. Cavanaugh, M. A., Kargol, J.A., Nickerson, J., and Fiore, N.F. in Advances in Localized Corrosion. (NACE–9, NACE International, Houston, TX, 1983) pp. 144–150.Google Scholar
6. Alavi, A. and Cottis, R. A., Corrosion Science 27, 443–451 (1987).Google Scholar
7. In-Drift Precipitation/Salts Analysis, ANL–EBS–MD–000045. Revision 00. ICN 02. (CRWMS M&O, Las Vegas, NV, 2001).Google Scholar
8. Krol, J. M., Benvenuti, M., and Romano, J., Ion Analysis Methods for IC and CIA® and Practical Aspects of Capillary Ion Analysis Theory, Waters Corporation, Milford, MA, 2000.Google Scholar