Secondary Waste Form Down-Selection Data Package???Fluidized Bed Steam Reforming Waste Form

Qafoku, Nikolla ; Westsik, Joseph H. ; Strachan, Denis M. ; Valenta, Michelle M. ; Pires, Richard P.

关键词: AR FACILITIES;    CONTAINERS;    CONTRACTORS;    GLASS;    PROCESSING;    RIVERS;    SOLID WASTES;    SOLIDIFICATION;    STEAM;    STORAGE FACILITIES;    TANKS;    TESTING;    VITRIFICATION;    WASTE FORMS;    WASTE PROCESSING;    WASTES waste forms;    FBSR;   

DOI  :  10.2172/1027701
RP-ID  :  PNNL-20704
PID  :  OSTI ID: 1027701
Others  :  Other: 830403000
Others  :  TRN: US1105791

学科分类：核能源与工程

美国|英语

来源: SciTech Connect

【 摘 要 】

The Hanford Site in southeast Washington State has 56 million gallons of radioactive and chemically hazardous wastes stored in 177 underground tanks (ORP 2010). The U.S. Department of Energy (DOE), Office of River Protection (ORP), through its contractors, is constructing the Hanford Tank Waste Treatment and Immobilization Plant (WTP) to convert the radioactive and hazardous wastes into stable glass waste forms for disposal. Within the WTP, the pretreatment facility will receive the retrieved waste from the tank farms and separate it into two treated process streams. These waste streams will be vitrified, and the resulting waste canisters will be sent to offsite (high-level waste [HLW]) and onsite (immobilized low-activity waste [ILAW]) repositories. As part of the pretreatment and ILAW processing, liquid secondary wastes will be generated that will be transferred to the Effluent Treatment Facility (ETF) on the Hanford Site for further treatment. These liquid secondary wastes will be converted to stable solid waste forms that will be disposed of in the Integrated Disposal Facility (IDF). To support the selection of a waste form for the liquid secondary wastes from WTP, Washington River Protection Solutions (WRPS) has initiated secondary waste form testing work at Pacific Northwest National Laboratory (PNNL). In anticipation of a down-selection process for a waste form for the Solidification Treatment Unit to be added to the ETF, PNNL is developing data packages to support that down-selection. The objective of the data packages is to identify, evaluate, and summarize the existing information on the four waste forms being considered for stabilizing and solidifying the liquid secondary wastes. At the Hanford Site, the FBSR process is being evaluated as a supplemental technology for treating and immobilizing Hanford LAW radioactive tank waste and for treating secondary wastes from the WTP pretreatment and LAW vitrification processes.