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  The mission of the Decommissioning and Environmental Sciences (DES) Division is to promote the development and use of those skills and technologies associated with the use of nuclear energy and the optimal management and stewardship of the environment, sustainable development, decommissioning, remediation, reutilization, and long-term surveillance and maintenance of nuclear-related installations, and sites. The target audience for this effort is the membership of the Division, the Society, and the public at large.
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  Discovering, Making, and Testing New Materials: SRNL’s Center For Hierarchical Waste Form Materials
  Savannah River National Laboratory researchers are building on the laboratory’s legacy of using cutting-edge science to effectively immobilize nuclear waste in innovative ways. As part of the Center for Hierarchical Waste Form Materials, SRNL is leveraging its depth of experience in radiological waste management to explore new frontiers in the industry.
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A laser boring technique has been used to simulate failed coatings of fuel particles. The cesium fractional release from irradiated failed particles is measured in time intervals during an annealing treatment at 1000 and 1200°C, respectively. In addition, the distribution of cesium along kernel and coating is measured by destructive gamma spectrometry. The fractional release versus time data are quantitatively recalculated by superposing diffusion from kernel and buffer layer using a two-zone assembly in spherical geometry. The derived kernel diffusion constants agree reasonably well with corresponding data from in-pile measurements.