Extensive separations (CLEAN) processing strategy compared to TRUEX strategy and sludge wash ion exchange
- Westinghouse Hanford Co., Richland, WA (United States)
- Pacific Northwest Lab., Richland, WA (United States)
Numerous pretreatment flowsheets have been proposed for processing the radioactive wastes in Hanford`s 177 underground storage tanks. The CLEAN Option is examined along with two other flowsheet alternatives to quantify the trade-off of greater capital equipment and operating costs for aggressive separations with the reduced waste disposal costs and decreased environmental/health risks. The effect on the volume of HLW glass product and radiotoxicity of the LLW glass or grout product is predicted with current assumptions about waste characteristics and separations processes using a mass balance model. The prediction is made on three principal processing options: washing of tank wastes with removal of cesium and technetium from the supernatant, with washed solids routed directly to the glass (referred to as the Sludge Wash C processing strategy); the previous steps plus dissolution of the solids and removal of transuranic (TRU) elements, uranium, and strontium using solvent extraction processes (referred to as the Transuranic Extraction Option C (TRUEX-C) processing strategy); and an aggressive yet feasible processing strategy for separating the waste components to meet several main goals or objectives (referred to as the CLEAN Option processing strategy), such as the LLW is required to meet the US Nuclear Regulatory Commission Class A limits; concentrations of technetium, iodine, and uranium are reduced as low as reasonably achievable; and HLW will be contained within 1,000 borosilicate glass canisters that meet current Hanford Waste Vitrification Plant glass specifications.
- Research Organization:
- Westinghouse Hanford Co., Richland, WA (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC06-87RL10930
- OSTI ID:
- 10182953
- Report Number(s):
- WHC-EP--0791; ON: DE94019039; BR: 35AF11201/35AF11202
- Country of Publication:
- United States
- Language:
- English
Similar Records
Clean Salt integrated flowsheet
Clean option: An alternative strategy for Hanford Tank Waste Remediation
Related Subjects
054000
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
A CODES
COMPARATIVE EVALUATIONS
COMPUTERIZED SIMULATION
ECONOMICS
EXPERIMENTAL DATA
HANFORD RESERVATION
HEALTH AND SAFETY
HIGH-LEVEL RADIOACTIVE WASTES
LOW-LEVEL RADIOACTIVE WASTES
MINIMIZATION
RADIOACTIVE WASTE PROCESSING
RADIOACTIVE WASTE STORAGE
REMEDIAL ACTION
STORAGE FACILITIES
TANKS
TRUEX PROCESS
UNDERGROUND STORAGE
WASTE PROCESSING