| 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. |