By high-level radioactive nuclear waste I assume that you are referring to spent fuel. At this point I don’t have sufficient information in order to make an informed decision. While I don’t doubt that placing the steel-lined , reinforced concrete, sealed dry storage containers (DSCs) inside reinforced concrete vaults would lead to a greater margin of safety in the scenarios described, I don’t have a good handle on how low the risk currently is. As the Canadian Nuclear Safety Commission (CNSC) regulates nuclear energy and materials in Canada, I’d be interested in hearing their perspective on the matter.
