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Chemical corrosion of highly radioactive borosilicate nuclear waste glass under simulated repository conditions

Published online by Cambridge University Press:  31 January 2011

Las Werme
Affiliation:
Swedish Nuclear Fuel and Waste Management Company
Inga K. Björner
Affiliation:
Studsvik AB, Sweden
Gerhard Bart
Affiliation:
Paul-Scherrer-Institut, Switzerland
Hans U. Zwicky
Affiliation:
Paul-Scherrer-Institut, Switzerland
Bernd Grambow
Affiliation:
Hahn-Meitner-Institut Berlin, Federal Republic of Germany
Werner Lutze
Affiliation:
Hahn-Meitner-Institut Berlin, Federal Republic of Germany
Rodney C. Ewing
Affiliation:
The University of New Mexico
Claude Magrabi
Affiliation:
British Nuclear Fuels, plc., United Kingdom
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Abstract

This review summarizes the results of the joint Japanese (Central Research Institute of Electric Power Industry, CRIEPI, Tokyo), Swiss (National Cooperative for the Storage of Radioactive Waste, NAGRA, Baden), Swedish (Swedish Nuclear Fuel and Waste Management Company, SKB, Stockholm) international ‘JSS’ project on the determination of the chemical durability of the French nuclear waste borosilicate glass, which was completed in 1988. Radioactive and nonradioactive glass specimens were investigated. A data base was created with results from glass corrosion tests performed with different water compositions, pH values, temperatures, sample surface areas (S), solution volumes (V), and flow rates. Glass corrosion tests were performed with and without bentonite and/or steel corrosion products present. Variation of the glass composition was taken into account by including the borosilicate glass ‘MW’ in the investigations, formulated by British Nuclear Fuels, plc. An understanding was achieved of the glass corrosion process in general, and of the performance of the French glass under various potential disposal conditions in particular. A special effort was made to establish a corrosion data base, using high S/V ratios in the experiments in order to understand the glass durability in the long term.

Information

Type
Commentaries and Reviews
Copyright
Copyright © Materials Research Society 1990

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