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; TRN: 94:019023
- Resource Relation:
- Other Information: PBD: Aug 1994
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
HANFORD RESERVATION
STORAGE FACILITIES
REMEDIAL ACTION
HIGH-LEVEL RADIOACTIVE WASTES
RADIOACTIVE WASTE PROCESSING
LOW-LEVEL RADIOACTIVE WASTES
TANKS
RADIOACTIVE WASTE STORAGE
UNDERGROUND STORAGE
TRUEX PROCESS
COMPARATIVE EVALUATIONS
ECONOMICS
MINIMIZATION
COMPUTERIZED SIMULATION
A CODES
EXPERIMENTAL DATA
054000
052001
HEALTH AND SAFETY
WASTE PROCESSING