Analysis of the Tank 5F Feed and Bleed Residual Solids

Poirier, M. ; Diprete, D.: Coleman, C. ; Washington, A.

Savannah River Site (S.C.)

关键词: Radioisotopes;    Nickel;    Anions;    Manganese;    Closures;   

DOI  :  10.2172/1021331
RP-ID  :  SRNL-STI-2011-00167
RP-ID  :  DE-AC09-08SR22470
RP-ID  :  1021331

美国|英语

来源: UNT Digital Library

【 摘 要 】

Savannah River Remediation (SRR) is preparing Tank 5F for closure. As part of Tank 5F Closure Mechanical Cleaning, SRR conducted a 'Feed and Bleed' process in Tank 5F. Following this 'Feed and Bleed' Mechanical Cleaning in Tank 5F, SRR collected two tank heel samples (referred to as sample 1 and sample 2) under Riser 5 to determine the composition of the material remaining in the tanks. This document describes sample analysis results. The conclusions from this analysis follow. (1) The anions measured all had a concentration less than 250 mg/kg, except for oxalate, which had a concentration of 2100-2400 mg/kg. (2) The measured cations with the highest concentration were iron (432,000-519,000 mg/kg), nickel (54,600-69,300 mg/kg), and manganese (35,200-42,100 mg/kg). All other cations measured less than 13,000 mg/kg. (3) The radionuclides present in the highest concentration are {sup 90}Sr (3.0 x 10{sup 10} dpm/g), {sup 137}Cs (6.8 x 10{sup 8} dpm/g), and {sup 241}Am (1.4 x 10{sup 8} - 1.8 x 10{sup 8} dpm/g). (4) The particle size analysis shows a large fraction of particles greater than 100 {micro}.