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Fusion Science and Technology
Latest News
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.
S. Tanaka, T. Iijima, A. Tonegawa, K. Kawamura, K. N. Sato
Fusion Science and Technology | Volume 63 | Number 1 | May 2013 | Pages 420-422
doi.org/10.13182/FST13-A16974
Articles are hosted by Taylor and Francis Online.
Experimental simulation of a V-shaped target for a gas divertor via detached plasma formation is presented using a linear divertor plasma simulator, TPD-Sheet IV. Three geometries of the opposite plate on the V-shaped target were investigated with variation of the contact gas flow rate. The ionization and recombination events are discussed for each target configuration using the collisional-radiative (CR) model. The results expect that a gas divertor with a V-shaped target effectively enhances plasma recycling and detachment.
