Storage of plutonium bearing materials at the US Department of Energy Savannah River Site (SRS) typically are packaged in DOE-STD-3013 welded containers which are stored in 9975 shipping packages. However, some materials are packaged in non-welded metal containers which consist of a can-bag-can configuration. These non-welded containers and the 9975 package provide safe containment of the plutonium bearing materials. Additionally, the materials must be stabilized such that adverse reactions do not occur during storage. Lastly, a surveillance program of these containers provides field and laboratory data with respect to package aging and potential degradation. The packaging, material stabilization, and surveillance requirements are identified in an Interim Safe Storage Criteria (ISSC) Program at SRS. This paper provides a high level overview of the ISSC program. Interim storage is defined as the storage prior to long term plutonium disposition.

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