Supplemental Immobilization of Handford Low-Activity Waste: Cast Stone Screening Tests
- Pacific Northwest National Lab. (PNNL), Richland, WA (United States). Environmental Molecular Sciences Lab.
- Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL)
- Washington River Protection Solutions (WRPS), Richland, WA (United States)
The Hanford Site has approximately 56 million gallons of radioactive waste stored in 177 underground storage tanks. The Hanford Waste Treatment and Immobilization Plant (WTP) is being constructed to treat all of the high-level waste (HLW) in the tank farms but will not have sufficient capacity to treat all of the low-activity waste (LAW) within the anticipated time frame for completion of the waste treatment mission. The LAW vitrification facility will need to be supplemented with a second LAW vitrification facility or an alternate LAW immobilization technology. A cementitious waste form known as Cast Stone is being considered to provide the required additional LAW immobilization capacity. Hanford Tri-Party Agreement (TPA) milestone M-062-40ZZ requires the U.S. Department of Energy Office of River Protection (DOE/ORP) to submit a One-Time Hanford Tank Waste Supplemental Treatment Technologies Report by October 2014 if a technology other than a second LAW vitrification facility is proposed. The main purpose of the one-time report will be to describe the additional treatment facilities and technologies needed to treat all of Hanford’s LAW. The report must describe the technologies considered, quantity of waste to be processed, quantity of final waste forms, secondary wastes, waste form performance data, technical viability, and life-cycle cost and schedule estimates. The DOE/ORP and the Washington State Department of Ecology would then have six months (until April 2015) to complete negotiations to select a final technology, and to establish milestones to implement the technology.
- Research Organization:
- Savannah River Site (SRS), Aiken, SC (United States); Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
- Sponsoring Organization:
- USDOE; Washington River Protection Solutions (WRPS)
- DOE Contract Number:
- AC09-08SR22470; AC05-76RL01830
- OSTI ID:
- 1179684
- Report Number(s):
- SRNL--STI-2013-00465; PNNL--22747
- Country of Publication:
- United States
- Language:
- English
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