TY - GEN
T1 - A case study of soil-side corrosion of aboveground storage tanks in the middle east
AU - Farhat, Hanan
N1 - Publisher Copyright:
© 2018 by NACE International.
PY - 2018
Y1 - 2018
N2 - Soil-side corrosion of the bottom plates of aboveground storage tanks is the main cause of tank failure in 90% of the storage tanks in the Middle East. Chemical and topographical analysis of the soil revealed high salt content and sinkholes that lead to porous soil structure that is not stable. A case study is discussed in this paper, in which failures of three storage tanks were investigated. In the three cases, the soil analysis revealed high salt content and low resistivity. The soil was ranked in the extremely corrosive region. Impressed Current Cathodic Protection (ICCP) doesn't provide the necessary protection for these tanks. Analysis of the corrosion scale on the tank bottoms were conducted using X-Ray Diffraction Spectroscopy (XRD), X-Ray Fluorescence Spectroscopy (XRF), Scanning Electron Microscopy (SEM) and Energy Dispersive X-Ray Spectroscopy (EDS). It is believed that the corrosion scale on the bottom of the tanks, as well as the presence of voids in the soil prevented the ICCP from providing the necessary protection to the tank bottoms.
AB - Soil-side corrosion of the bottom plates of aboveground storage tanks is the main cause of tank failure in 90% of the storage tanks in the Middle East. Chemical and topographical analysis of the soil revealed high salt content and sinkholes that lead to porous soil structure that is not stable. A case study is discussed in this paper, in which failures of three storage tanks were investigated. In the three cases, the soil analysis revealed high salt content and low resistivity. The soil was ranked in the extremely corrosive region. Impressed Current Cathodic Protection (ICCP) doesn't provide the necessary protection for these tanks. Analysis of the corrosion scale on the tank bottoms were conducted using X-Ray Diffraction Spectroscopy (XRD), X-Ray Fluorescence Spectroscopy (XRF), Scanning Electron Microscopy (SEM) and Energy Dispersive X-Ray Spectroscopy (EDS). It is believed that the corrosion scale on the bottom of the tanks, as well as the presence of voids in the soil prevented the ICCP from providing the necessary protection to the tank bottoms.
KW - Aboveground storage tanks
KW - ICCP
KW - Impressed current cathodic protection
KW - Soil-side corrosion
UR - http://www.scopus.com/inward/record.url?scp=85053532445&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:85053532445
SN - 9781510864405
T3 - NACE - International Corrosion Conference Series
BT - Corrosion Conference and Expo 2018
PB - National Assoc. of Corrosion Engineers International
T2 - Corrosion Conference and Expo 2018
Y2 - 15 April 2018 through 19 April 2018
ER -