Baseline Glass Development for Combined Fission Products Waste Streams

Crum, Jarrod V. ; Billings, Amanda Y. ; Lang, Jesse B. ; Marra, James C. ; Rodriguez, Carmen P. ; Ryan, Joseph V. ; Vienna, John D.

关键词: AR FACILITIES;    BOROSILICATE GLASS;    BURNUP;    COST BENEFIT ANALYSIS;    DECAY;    FISSION PRODUCTS;    GLASS;    MINIMIZATION;    RARE EARTHS;    SAVANNAH RIVER PLANT;    TRANSITION ELEMENTS;    VITRIFICATION;    WASTE FORMS;    WASTES;   

DOI  :  10.2172/1048019
RP-ID  :  PNNL-18524
PID  :  OSTI ID: 1048019
Others  :  Other: AF5805000
Others  :  TRN: US1204128

学科分类：核能源与工程

美国|英语

来源: SciTech Connect

【 摘 要 】

Borosilicate glass was selected as the baseline technology for immobilization of the Cs/Sr/Ba/Rb (Cs), lanthanide (Ln) and transition metal fission product (TM) waste steams as part of a cost benefit analysis study.[1] Vitrification of the combined waste streams have several advantages, minimization of the number of waste forms, a proven technology, and similarity to waste forms currently accepted for repository disposal. A joint study was undertaken by Pacific Northwest National Laboratory (PNNL) and Savannah River National Laboratory (SRNL) to develop acceptable glasses for the combined Cs + Ln + TM waste streams (Option 1) and Cs + Ln combined waste streams (Option 2) generated by the AFCI UREX+ set of processes. This study is aimed to develop baseline glasses for both combined waste stream options and identify key waste components and their impact on waste loading. The elemental compositions of the four-corners study were used along with the available separations data to determine the effect of burnup, decay, and separations variability on estimated waste stream compositions.[2-5] Two different components/scenarios were identified that could limit waste loading of the combined Cs + LN + TM waste streams, where as the combined Cs + LN waste stream has no single component that is perceived to limit waste loading. Combined Cs + LN waste stream in a glass waste form will most likely be limited by heat due to the high activity of Cs and Sr isotopes.