EFFECT OF CHLORIDE AND SULFATE CONCENTRATION ON PROBABLITY BASED CORROSION CONTROL FOR LIQUID WASTE TANKS- PART IV

Hoffman, E.

Savannah River Site (S.C.)

关键词: Corrosion;    Carbon Steels;    Sulfates;    Chlorides;    Nitrates;   

DOI  :  10.2172/1049524
RP-ID  :  SRNL-STI-2011-00479
RP-ID  :  DE-AC09-08SR22470
RP-ID  :  1049524

美国|英语

来源: UNT Digital Library

【 摘 要 】

A series of cyclic potentiodynamic polarization tests was performed on samples of A537 carbon steel in support of a probability-based approach to evaluate the effect of chloride and sulfate on corrosion susceptibility. Testing solutions were chosen to build off previous experimental results from FY07, FY08, FY09 and FY10 to systemically evaluate the influence of the secondary aggressive species, chloride, and sulfate. The FY11 results suggest that evaluating the combined effect of all aggressive species, nitrate, chloride, and sulfate, provides a consistent response for determining corrosion susceptibility. The results of this work emphasize the importance for not only nitrate concentration limits, but also chloride and sulfate concentration limits as well.