Assessment of the Impact of a New Guanidine Suppressor in NGS on F/H Laboratory Analyses for DWPF and Saltston MCU Transfers.

摘要

Implementation of the Next Generation Solvent (NGS) in the Modular Caustic-Side Solvent Extraction Unit (MCU) will now proceed with a new suppressor compound, 1,2,3-tris(3,7- dimethyloctyl)guanidine (TiDG), replacing the originally planned suppressor for NGS, 1,3- dicyclohexyl-2-(11- methyldodecyl)guanidine (DCiTG). The Savannah River National Laboratory (SRNL) was tasked with evaluating the potential impact to F/H Laboratory analyses supporting the Defense Waste Processing Facility (DWPF) Waste Acceptance Criteria (WAC) used to qualify transfers of MCU Strip Effluent (SE) into the facility and the Saltstone WAC used to qualify transfers of Tank 50 containing Decontaminated Salt Solution (DSS) from MCU into Saltstone. This assigned scope is covered by a Task Technical and Quality Assurance Plan(TTQAP).