Laboratory-scale vitrification and leaching of Hanford high-level waste for the purpose of simulant and glass property models validation

Conference · Mon Feb 01 04:00:00 EST 1993

OSTI ID:6510132

Morrey, E V; Elliott, M L; Tingey, J M

The Hanford Waste Vitrification Plant (HWVP) is being built to process the high-level and TRU waste into canistered glass logs for disposal in a national repository. Testing programs have been established within the Project to verify process technology using simulated waste. A parallel testing program with actual radioactive waste is being performed to confirm the validity of using simulates and glass property models for waste form qualification and process testing. The first feed type to be processed by and the first to be tested on a laboratory-scale is pretreated neutralized current acid waste (NCAW). The NCAW is a neutralized high-level waste stream generated from the reprocessing of irradiated nuclear fuel in the Plutonium and Uranium Extraction (PUREX) Plant at Hanford. As part of the fuel reprocessing, the high-level waste generated in PUREX was denitrated with sugar to form current acid waste (CAW). Sodium hydroxide and sodium nitrite were added to the CAW to minimize corrosion in the tanks, thus yielding neutralized CAW. The NCAW contains small amounts of plutonium, fission products from the irradiated fuel, stainless steel corrosion products, and iron and sulfate from the ferrous sulfamate reductant used in the PUREX process. This paper will discuss the results and status of the laboratory-scale radioactive testing.

• Research Organization: Pacific Northwest Lab., Richland, WA (United States)
• Sponsoring Organization: DOE; USDOE, Washington, DC (United States)
• DOE Contract Number: AC06-76RL01830
• OSTI ID: 6510132
• Report Number(s): PNL-SA-21885; CONF-930205--49; ON: DE93010168
• Country of Publication: United States
• Language: English

Related Subjects

052001* -- Nuclear Fuels-- Waste Processing
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
CHEMICAL COMPOSITION
CHEMICAL REACTIONS
DISPERSIONS
DISSOLUTION
GLASS
HANFORD RESERVATION
HIGH-LEVEL RADIOACTIVE WASTES
LEACHING
MATERIALS
MIXTURES
NATIONAL ORGANIZATIONS
OFF-GAS SYSTEMS
PHYSICAL PROPERTIES
RADIOACTIVE MATERIALS
RADIOACTIVE WASTES
SEPARATION PROCESSES
SIMULATION
SLURRIES
SUSPENSIONS
TESTING
US DOE
US ERDA
US ORGANIZATIONS
VITRIFICATION
WASTES