Abstract
We investigated three structural materials which may not contain a high level of boron or enriched boron, such as (1)Borated stainless steel(B-Stainless Steel), (2) Composite material(three-layered clad plate composed of B-Stainless Steel/Cu/B-Stainless Steel structure), and (3) Borated aluminum alloy, Applicability of these material for baskets was studied, several material tests were conducuted, and the material data which was required for the standarization, etc. were obtained. Also, matters to be considerd were descrived. As a result of above study, by using above 3 materials with cask baskets the designs of casks and cask baskets which corresponded to high burnup and MOX spent fuels could be specifically indicated.
