Gas release during formatting of a simulated Hanford waste vitrification plant feed
High-level radioactive wastes have been generated at the Hanford Site in Washington over the past 40 years. The Hanford Waste Vitrification Plant (HWVP) is being designed for the Department of Energy (DOE) to vitrify and immobilize these wastes in a glass matrix for permanent disposal in a geologic repository. The incoming high level waste (HLW) is concentrated and chemical modifiers are added. The adjusted feed is then continuously metered to a ceramic melter, where it is converted to a glass. The molten glass product is poured into stainless steel canisters, which are to be placed in interim storage prior to shipment to the repository. This study was conducted to characterize the gases released during the step in which formic acid is added to concentrated HLW to adjust (1) the feed rheology to facilitate transfer through pipes within the plant, and (2) the overall redox state of the feed to a value acceptable for processing in the melter. The gas release behavior during formatting requires characterization in order to establish safe operating criteria and to design for compliance with environmental regulations. (4 refs., 6 figs., 5 tabs.)
- Research Organization:
- Pacific Northwest Lab., Richland, WA (USA)
- DOE Contract Number:
- AC06-76RL01830
- OSTI ID:
- 7153890
- Report Number(s):
- PNL-SA-15965; CONF-880850-14; ON: DE88015941
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
053000 -- Nuclear Fuels-- Environmental Aspects
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
CERAMIC MELTERS
DATA
DIAGRAMS
ELECTRIC FURNACES
FLOWSHEETS
FURNACES
GLASS
GROUND RELEASE
HIGH-LEVEL RADIOACTIVE WASTES
INFORMATION
MANAGEMENT
MATERIALS
NUMERICAL DATA
PROCESSING
RADIOACTIVE EFFLUENTS
RADIOACTIVE MATERIALS
RADIOACTIVE WASTE DISPOSAL
RADIOACTIVE WASTE MANAGEMENT
RADIOACTIVE WASTE PROCESSING
RADIOACTIVE WASTES
SIMULATION
VITRIFICATION
WASTE DISPOSAL
WASTE MANAGEMENT
WASTE PROCESSING
WASTES