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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.
Ivan A. Alekseev, Sergey P. Karpov, Veniamin D. Trenin
Fusion Science and Technology | Volume 28 | Number 3 | October 1995 | Pages 499-504
Tritium Processing | Proceedings of the Fifth Topical Meeting on Tritium Technology in Fission, Fusion, and Isotopic Applications Belgirate, Italy May 28-June 3, 1995 | doi.org/10.13182/FST95-A30451
Articles are hosted by Taylor and Francis Online.
Cryosorption pump is very convenient means for hydrogen isotope transportation, since a cryopump combines a vacuum pump, compressor and temporary storage reservoir of hydrogen isotopes. We have studied zeolites as the cryosorbent for hydrogen isotope fore-vacuum pumping. The prototype of the cryosorption pump was designed, made and tested. It is shown that synthetic chabazite CaET-4B has the highest adsorption capacity in relation to hydrogen isotopes in the low pressure region. The equation of the adsorption isotherms was obtained. The results of the testing and operation of the cryopump for hydrogen isotopes transport are described. The pump is simple, reliable and allows to reduce the losses of deuterium and exclude tritium release to atmosphere and the formation of tritium wastes.
