Solvent hold tank sample results for MCU-15-815-816-817-818-819-820 November monthly sample

Fondeur, F. F.¹  Jones, D. H.¹ 

[1] Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL)

关键词: SAMPLING;    SOLVENTS;    IMPURITIES;    TANKS;    SAVANNAH RIVER PLANT;    HYDROGEN;    MERCURY;    RECOMMENDATIONS;    RESIDUES;    CHEMICAL;   

DOI  :  10.2172/1238597
RP-ID  :  SRNL-STI--2016-00016
PID  :  OSTI ID: 1238597
Others  :  TRN: US1600541

美国|英语

来源: SciTech Connect

【 摘 要 】

Savannah River National Laboratory (SRNL) received one set of Solvent Hold Tank (SHT) samples (MCU-15-815-816-817-818-819-820), pulled on 11/29/2015 for analysis. The samples were inspected, combined, and analyzed for composition. Chemical analysis of the composite sample MCU-15-815-816-817-818-819-820 indicated the TiDG, Isopar???L, and MaxCalix are at nominal levels. The modifier concentration is 3% below its nominal concentration. This analysis confirms the addition of TiDG, MaxCalix, and modifier to the solvent on November 28, 2015. Based on the current monthly sample, the levels of TiDG, Isopar???L, MaxCalix, and modifier are sufficient for continuing operation but are expected to decrease with time. Periodic characterization and trimming additions to the solvent are recommended. No impurities above the 1000 ppm level were found in this solvent by the Semi-Volatile Organic Analysis (SVOA). No impurities were observed in the Hydrogen Nuclear Magnetic Resonance (HNMR). However, up to 12.5 ?? 3 micrograms of mercury per gram of solvent (or 10.4 ??g/mL) was detected in this sample. The solids residues found at the bottom of the p-nut vial from sample MCU-15-815 were determined to be left-over pipe residues that were flushed into the sample and they were found to have no impact on the solvent purity or on the chemical and physical properties of the solvent. The laboratory will continue to monitor the quality of the solvent in particular for any new impurities or degradation of the solvent components.