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Research Papers: Design and Analysis

Fitness-for-Service Assessment of Hydrocarbon Storage Tanks

[+] Author and Article Information
F. Ahmad, R. Seshadri

Faculty of Engineering and Applied Science, Memorial University, St. John’s, NL, A1B 3X5, Canada

M. M. Hossain1

Faculty of Engineering and Applied Science, Memorial University, St. John’s, NL, A1B 3X5, Canadamosharraf.hossain@mun.ca

www.chairs.gc.ca

1

Corresponding author.

J. Pressure Vessel Technol 132(2), 021207 (Mar 31, 2010) (6 pages) doi:10.1115/1.4000726 History: Received March 27, 2009; Revised November 22, 2009; Published March 31, 2010; Online March 31, 2010

Storage tanks are widely used in the industry to store hydrocarbon products. Corrosion damage is considered to be a serious threat to the structural integrity of the industrial storage tanks if it occurs on the primary pressure containment boundary. Therefore, fitness-for-service (FFS) assessment of these structures is performed periodically in order to ensure the operational safety and structural integrity. In this paper, evaluation methods are proposed for FFS assessment of storage tanks undergoing corrosion damage. The proposed methods are shown to give reasonably accurate and conservative assessment of the remaining strength factor. The methods are demonstrated through an example and the results are verified by inelastic finite element analysis.

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Copyright © 2010 by American Society of Mechanical Engineers
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Figures

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Figure 1

Decay length and reference volume dimensions for a cylindrical shell

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Figure 2

A schematic diagram of the rectangular LTA in a storage tank

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Figure 3

Hydrostatic pressure distribution

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