Application of risk curve for statistical analysis of backside corrosion in the bottom floors of oil storage tanks

Naoya Kasai, Takuma Maeda, Koichi Tamura, Shigeo Kitsukawa, Kazuyoshi Sekine

  • 1 Citations

Abstract

Overall thickness profile data for backside corrosion of the bottom floors of 17 oil storage tanks were collected, and a risk curve from the overall thickness profile and discrete thickness data was derived to evaluate the corrosion risk of the bottom floors. The slope of the risk curve in the large corrosion region was found to indicate the local corrosion condition. Parameters for evaluating localized corrosion derived from the corrosion distributions were also investigated to evaluate the corrosion risk of the bottom floors.Compared with the parameters obtained using the overall thickness profile and discrete thickness data, the slope of the risk curve is an excellent evaluation parameter using discrete thickness data. Thus, it is possible to accurately evaluate the corrosion characteristics of the bottom floors of oil storage tanks with the parameters obtained from discrete thickness data.

Original languageEnglish
Pages (from-to)19-25
Number of pages7
JournalInternational Journal of Pressure Vessels and Piping
Volume141
DOIs
StatePublished - 2016 May 1

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Corrosion
Statistical methods

Keywords

  • Localized corrosion
  • Maintenance
  • Oil storage tank
  • Risk assessment
  • Risk curve

ASJC Scopus subject areas

  • Mechanical Engineering
  • Mechanics of Materials
  • Materials Science(all)

Cite this

Application of risk curve for statistical analysis of backside corrosion in the bottom floors of oil storage tanks. / Kasai, Naoya; Maeda, Takuma; Tamura, Koichi; Kitsukawa, Shigeo; Sekine, Kazuyoshi.

In: International Journal of Pressure Vessels and Piping, Vol. 141, 01.05.2016, p. 19-25.

Research output: Contribution to journalArticle

Kasai, Naoya; Maeda, Takuma; Tamura, Koichi; Kitsukawa, Shigeo; Sekine, Kazuyoshi / Application of risk curve for statistical analysis of backside corrosion in the bottom floors of oil storage tanks.

In: International Journal of Pressure Vessels and Piping, Vol. 141, 01.05.2016, p. 19-25.

Research output: Contribution to journalArticle

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AB - Overall thickness profile data for backside corrosion of the bottom floors of 17 oil storage tanks were collected, and a risk curve from the overall thickness profile and discrete thickness data was derived to evaluate the corrosion risk of the bottom floors. The slope of the risk curve in the large corrosion region was found to indicate the local corrosion condition. Parameters for evaluating localized corrosion derived from the corrosion distributions were also investigated to evaluate the corrosion risk of the bottom floors.Compared with the parameters obtained using the overall thickness profile and discrete thickness data, the slope of the risk curve is an excellent evaluation parameter using discrete thickness data. Thus, it is possible to accurately evaluate the corrosion characteristics of the bottom floors of oil storage tanks with the parameters obtained from discrete thickness data.

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