Assessment of double-shell tank waste pretreatment options
Disposal of high-level waste (HLW) and transuranic (TRU) waste stored in double-shell tanks (DST) requires pretreatment to separate the high-activity, high-hazard portion of the waste for further treatment at the Hanford Waste Vitrification Plant (HWVP) for conversion to a borosilicate glass suitable for deep geologic disposal. The low-activity, low-hazard portion will be converted to a cementitious material called grout at the Grout Treatment Facility (GTF) for near-surface disposal in concrete vaults at the Hanford Site. The low-level waste (LLW) stored in the DSTs will be converted to grout without additional pretreatment. This assessment report summarizes the pretreatment processes and technology development requirements; evaluates the viability, cost, and schedule for existing facilities to perform the pretreatment mission; evaluates the cost and schedule for new pretreatment facility options; and provides a recommended plan for pretreatment and disposal of DST waste. 35 refs., 19 figs., 19 tabs.
- Research Organization:
- Westinghouse Hanford Co., Richland, WA (United States)
- DOE Contract Number:
- AC06-87RL10930
- OSTI ID:
- 719933
- Report Number(s):
- WHC-SP--0464; ON: TI89021331
- Country of Publication:
- United States
- Language:
- English
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