Innovative Idea to Accelerate Tank Closure in DOE Savannah River Site

摘要

Treatment and disposition of salt waste is the critical path to completion of Savannah River Site (SRS) Liquid Waste (LW) Disposition Program. During the period prior to startup of the Salt Waste Processing Facility (SWPF), salt waste disposition will continue through the Actinide Removal Process (ARP) and Modular Caustic Side Solvent Extraction (CSSX) Unit (MCU) facilities. Deliquification, Dissolution, and Adjustment (DDA) processing was required prior to startup of the ARP/MCU facilities to enable continued tank closure activities, to sustain sludge disposition activities in the Defense Waste Processing Facility (DWPF), and to minimize continued limited use of old-style tanks. During DDA phase, approximately 2.8 million gallons (Mgal) of dissolved salt solution from Tank 41 and associated adjustment streams were dispositioned. Another 4.1 Mgal of salt waste has been dispositioned through ARP/MCU since startup in April 2008.