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Meeting Materials Science & Technology 2019
Symposium Materials Issues in Nuclear Waste Management
Presentation Title P3-69: Corrosion Test Method Evaluation for Iodine Waste Forms
Author(s) Amanda Lawter, R. Matthew Asmussen, Jeff Bonnett, Joelle Reiser, Nancy Avalos, Brian Riley
On-Site Speaker (Planned) Amanda Lawter
Abstract Scope A test method to correlate laboratory corrosion behavior of Iodine-containing waste forms (IWFs) to long term disposal predictions is required. Several candidate methods have been evaluated, including static tests (PCT), flow through tests (SPFT) and periodic solution renewal tests (ANS/ANSI 16.1). Each test presents unique challenges for the evaluation required: either requiring destruction of the samples, high cost and labor needs, or extended durations. In this study, a 3-day static test based on the ASTM C1220-17 procedure was used to evaluate durability of multiple IWFs, including Ag mordenite (AgZ), silica-based aerogel, sodalite, and Te glass. The modified-C1220 test results are compared with PCT, SPFT, and ANS 16.1 tests to determine if the C1220 test can accurately predict the durability of the IWFs. The test, if successful, will provide a shorter, cost effective method to evaluate IWFs for long term disposal.


Aerogels with Enhanced Gas Permeability and Mechanical Strength for use as Membranes in Radioiodine Capture
Dechlorination Methods and Ceramic Waste Forms for the Immobilization of Electrorefiner Salt
Disorder and Mass Transport in Model Waste Forms
Effect of Solution Chemistry on the Release Mechanism of Iodine from Iodoapatite Waste Form in Aqueous Environments
Electrical Properties of Nuclear Glasses
Energetics and Structure of Uranium-incorporated Iron Oxides
Impact of Redox on Crystallization Behavior of Spinel Crystals in HLW Borosilicate Glasses
Investigations into Physical and Chemical Characteristics of Nuclear Waste Glass Alteration Layers
Melt-Cast Ceramic Waste Forms: Laboratory Development and Scaled Demonstrations
Modeling of Carbonation Effects in a Cementitious Waste Form under Dry Environmental Conditions
Observations of Crystal Settling Behavior in a Full-Scale HLW Melter Mock-Up
Optimization of Frit Composition for Coupled Operation of the Defense Waste Processing Facility and Salt Waste Processing Facility at the Savannah River Site
P3-69: Corrosion Test Method Evaluation for Iodine Waste Forms
P3-70: Glass Pool Flow in a Joule-Heated, Laboratory-Scale Melter
P3-71: Multi-scale Structural Response of Pyrochlore Oxides to Swift Heavy Ion Irradiation
Predicting the Density of High-Level Waste Glass Compositions
The Influence of Reducing Conditions on the Stabilization of Iodine Containing Solid Secondary Wastes
The Relationship between Zeolite Type and Glass Dissolution Rate Resumption
Thermodynamics of Zeolite Precipitation in Stage III Glass Corrosion

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