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Glass strategy: Hanford’s enhanced waste glass program
The mission of the Department of Energy’s Office of River Protection (ORP) is to complete the safe cleanup of waste resulting from decades of nuclear weapons development. One of the most technologically challenging responsibilities is the safe disposition of approximately 56 million gallons of radioactive waste historically stored in 177 tanks at the Hanford Site in Washington state.
ORP has a clear incentive to reduce the overall mission duration and cost. One pathway is to develop and deploy innovative technical solutions that can advance baseline flow sheets toward higher efficiency operations while reducing identified risks without compromising safety. Vitrification is the baseline process that will convert both high-level and low-level radioactive waste at Hanford into a stable glass waste form for long-term storage and disposal.
Although vitrification is a mature technology, there are key areas where technology can further reduce operational risks, advance baseline processes to maximize waste throughput, and provide the underpinning to enhance operational flexibility; all steps in reducing mission duration and cost.
J. M. Mack, A. A. Hauer, N. D. Delamater, W. W. Hsing, R. G. Watt, D. A. Baker, D. B. Harris, G. R. Magelssen, J. M. Wallace, L. Suter, D. Ress, L. Powers, O. Landen, R. Thiessen, D. Phillion, P. Amendt
Fusion Science and Technology | Volume 26 | Number 3 | November 1994 | Pages 687-695
Inertial Confinement Experiment | Proceedings of the Eleventh Topical Meeting on the Technology of Fusion Energy New Orleans, Louisiana June 19-23, 1994 | doi.org/10.13182/FST94-A40237
Articles are hosted by Taylor and Francis Online.
Symmetric radiation drive is required for achieving ignition in laboratory experiments. Over the last two years, a concerted series of drive symmetry experiments have been performed on the Nova laser system. The goals of this work were to develop measurement techniques and to apply them to symmetry variation and control experiments. The emphasis in this initial work has been on time integrated measurements (integrated over the laser drive pulse). We have also begun work on methods for time resolved measurements. Most of our work used the symmetry signature impressed on the compressed core of a capsule imploded in a hohlraum (cylindrical canister) environment. X-ray imaging of this core provides a mapping that can be compared with theoretical modeling and related to a specific amount of drive asymmetry. This method is indirect and we have taken great care in understanding the formation of the symmetry signature and in its comparison with simulations. A review of drive symmetry measurement and control experiments is presented, including data from time integrated and time resolved measurements; these measurements are also compared to modeling. Under carefully controlled conditions results from symmetry measurements (and from other auxiliary measurements) are reproducible, and indicate that aspects of implosions symmetry can be controlled.