Capsule Integrity Report for Capsule Dry Storage Project

摘要

WMP-16939, Revision 0, is a new document that evaluates the integrity of capsules under the conditions of dry storage for a period of 50 years for the Capsule Dry Storage Project. Four deterioration mechanisms were considered. These mechanisms include (1) swelling and/or pressurization of the capsules due to phase transformations of the salt, (2) deterioration of the welds. (3)corrosion of the capsules, and (4)mechanical failure of the capsule due to thermal aging. Three accident scenarios that have the potential to challenge the integrity of the capsules are being considered for the dry storage module: (1) fire, (2) a blocked inlet or outlet from the dry storage modules, and (3) a drop of the overpack.