Abstract

In 1986, approximately 2000 samples of waste glasses and proposed package components were buried in the salt formation at the Waste Isolation Pilot Plant (WIPP) in Carlsbad, New Mexico. These samples are part of a five year study, called the Materials Interface Interactions Tests (MIIT), being managed by Savannah River Laboratory (SRL) and Sandia National Laboratory (SNL). MIIT involves the active participation of eight countries, including Belgium, Canada, France, Germany, Japan, Sweden, the United Kingdom, and the United States. The main objective of the present study is to investigate the interactions of SRL Y (165/TDS) waste blass with proposed metal canister or overpack materials, and more specifically, to determine what effect these metals have on leaching of the SRL waste glass system. Metal systems studied include 304L stainless steel, TiCode-12, lead, and A216 carbon steel. Analyses were performed using scanning electron microscopy (SEM) along with complementary energy dispersive x-rays (EDX). These results are then correlated to an earlier MIIT study which assessed the behavior of the same SRL waste glass system in WIPP but without metal present. 9 refs., 28 figs., 3 tabs.

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