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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.
Noriyuki Momoshima, Hideki Kakiuchi
Fusion Science and Technology | Volume 41 | Number 3 | May 2002 | Pages 404-408
Biology | Proceedings of the Sixth International Conference on Tritium Science and Technology Tsukuba, Japan November 12-16, 2001 | doi.org/10.13182/FST02-A22620
Articles are hosted by Taylor and Francis Online.
The detritiation system using the hydrogen-oxidizing microorganism isolated from the sandy loam soil was developed, which is designed to remove HT in a gas phase. Silicone hollow-fiber-membrane tubes was used to separate gas phase and liquid phase in which microorganisms are cultured. HT in the gas phase diffuses through the tube membrane to the liquid phase, oxidized to HTO and retained in the liquid phase. Detritiation system showed rapid and complete removal of HT mixed in the room air of atmospheric H2 concentration.