Effectiveness of Vapor Corrosion Inhibitors Under Bacterial Activity for Aboveground Storage Tank Application

Conference · Wed Jan 24 04:00:00 EST 2024

OSTI ID:2322416

Shukla, Pavan K. ^[1]; Fuentes, Roderick E. ^[1]; Nordquist, Andrew ^[1]; Wiersma, Bruce J. ^[1]; Pederson, Ingrid ^[2]

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1. Savannah River National Laboratory (SRNL), Aiken, SC (United States)
2. Enbridge; Enbridge Centre, 10175 101 Street NW Edmonton T5J 0H3 Canada

Bacterial activity is known to influence corrosion and can result in increasing soil-side corrosion of the aboveground storage tanks (ASTs) floor plates. Association for Materials Protection and Performance (AMPP) defines this phenomenon as Microbiologically Influenced Corrosion (MIC). It has been hypothesized that vapor corrosion inhibitors (VCIs) can not only function in presence of bacterial activity but can also function as biocides. Experiments were conducted to study the effect of bacterial activity on corrosion in the sand pad conditions and effect of VCIs in mitigating MIC. Various bacteria cultures were grown using commercially available culture media, and coupon exposure tests were performed with field sand mixed with the culture media. To this end, control and VCI-dosed electrolytes were prepared using the field sand plus bacteria cultures. Pre- and post-test bacteria concentration estimation and measurements, respectively, in the VCI-dosed electrolytes indicated that VCIs do not function as biocides, however, VCIs are highly effective for mitigating corrosion in presence of bacterial activity.

• Research Organization: Savannah River National Laboratory (SRNL), Aiken, SC (United States)
• Sponsoring Organization: USDOE Office of Environmental Management (EM)
• DOE Contract Number: 89303321CEM000080
• OSTI ID: 2322416
• Report Number(s): SRNL-STI-2024-00034
• Country of Publication: United States
• Language: English