Experimental plan for DPC/overpack performance in a repository.
Anastasia Ilgen, David Enos, Charles R. Bryan, Robert P. Rechard, Ernest L. Hardin · 2014
This report outlines the laboratory corrosion tests for the materials used in the dual p urpose canisters (DPC).T he proposed testing program i s designed to assess whether structural integrity of a stainless steel basked will be preserved in case of an early breach (flooding with groundwater) during direct disposal of a DPC.Additionally, we are addressing several of the most uncertain areas concerning material behavior in a repository, particularly corrosion rates of t he corrosion-resistant materials under anoxic conditions, potential for the localized corrosion and its feedback to the mechanical strength of the waste package components.The materials proposed for testing are stainless steels 304/304L and 316/316L -widely used in the existing DPCs, and prospective overpack materials Hastelloys C-4 and C-22.These results will contribute to the overall evaluations on the feasibility of the direct disposal of DPCs.