A New Type B Packaging Design for Disused Radiological Sources

摘要

A conceptual design is presented for a new Type B packaging for storage, transport and disposal of disused radiological sources. Results of engineering analysis showed that the compact Type B packaging design could accommodate up to seven disused Cs/Sr capsules, with a total heat dissipation capability of up to 1,000 W. The all stainless-steel packaging design provides excellent structural, thermal and shielding performance under normal conditions of transport (NCT) and hypothetical accident conditions (HAC), as prescribed in the U.S. federal regulations 10 CFR 71 Packaging and Transportation of Radioactive Material. The stainless steel structure components also provide excellent long-term performance against general corrosion and stress corrosion cracking during extended dry storage, thus enabling subsequent transportation, without repackaging of the Cs/Sr capsules, to a repository or deep borehole for final disposal. The compact Type B packaging design includes an option to use the ARG-US remote monitoring system to enhance safety and security during extended storage, transportation, and disposal.