Tank Bottom Corrosion Induced by Anode-Generated Oxygen

Journal Article · Sun Dec 13 23:00:00 EST 2020 · Materials Performance

OSTI ID:1784917

Math, Sujay ^[1]; Shukla, Pavan K. ^[2]; Natale, Terry ^[1]

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1. Zerust Oil and Gas, Beachwood, OH (United States)
2. Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL)

Cathodic protection system using aclose coupled mixed metal oxide (MMO) anode is the corrosion prevention technique for soil-side of the aboveground storage tank (AST) bottoms. MMO anodes generate oxygen at its surfacesdue to water electrolysis at polarized potentials above a threshold; oxygen from the MMO anodes can depolarize the bottoms’polarized potentials. Further, when the tank bottom plate loses contact with the sand pad due to flexing, oxygen can accumulate in the void space and accelerate corrosion. This paper provides information on preventive measures that can be adopted to prevent oxygen concentration corrosion of the AST soil-side bottoms

• Research Organization: Savannah River Site (SRS), Aiken, SC (United States); Savannah River National Lab (SRNL), Aiken, SC (United States)
• Sponsoring Organization: USDOE Office of Environmental Management (EM)
• Grant/Contract Number: AC09-08SR22470
• OSTI ID: 1784917
• Report Number(s): SRNL--STI-2020-00579
• Journal Information: Materials Performance, Journal Name: Materials Performance Journal Issue: 2 Vol. 60; ISSN 0094-1492
• Publisher: NACE International
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE