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Fusion Science and Technology
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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.
Dong Chan Seok, Yong Ho Jung, Taihyeop Lho, Kyu-Sun Chung
Fusion Science and Technology | Volume 55 | Number 2 | February 2009 | Pages 213-217
Technical Paper | Seventh International Conference on Open Magnetic Systems for Plasma Confinement | doi.org/10.13182/FST09-A7016
Articles are hosted by Taylor and Francis Online.
We investigated efficiency of removal of NO and NOx for applied voltage, repetition frequency and energy according to reactor type (wire-plate and wire-cylinder type reactor). Characteristics of Reactor type by pulsed corona discharge could be analyzed through these Results. Because it is very difficult to measure the conduction current for calculation of energy transferred into the reactor in the corona discharge, conduction current was obtained indirectly and the necessary energy for removal of NO and NOx was calculated from conduction current. Removal efficiency of NO and NOx for control variable (applied voltage, pulse repetition frequency, energy transferred into the reactor and removed quantity etc.) in the wire-cylinder type reactor was higher than that in the wire-plate type reactor.