PSI - Issue 72

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ScienceDirect

Procedia Structural Integrity 72 (2025) 91–96

12th Annual Conference of Society for Structural Integrity and Life (DIVK12) Structural integrity assessment of oil storage tank: Non-destructive approach Lazar Jeremić a,b , Branislav Đorđević a, *, Håvard Sletvold b , Aleksandar Sedmak c ,

Aleksandar Jovanovic d , Ana Petrovic c , Simon Sedmak a a Innovation Center of Faculty of Mechanical Engineering, Kraljice Marije 16, Belgrade, Serbia b Axess Group, Grønørveien 1, 7300 Orkanger, Norway c Faculty of Mechanical Engineering, University of Belgrade, Kraljice Marije 16, Belgrade, Serbia d Mont R Ltd., Belgrade, Serbia

Abstract This work presents the method for monitoring the integrity of oil methanol tanks located in Serbia and Norway. Considering the importance of safe operation of such equipment, it was necessary to use advanced non-destructive testing inspection for this purpose. The inspection, which involved state-of-the-art ultrasonic testing method, was completed in order to collect data required for evaluation of structural integrity and fitness for continued service of the tanks in question. Inspection and structural integrity analysis will include assessment of the most critical elements of these tanks, including their foundations, shell, roof and floor/bottom of the methanol tanks. This analysis included the calculation of thickness in various parts of the tanks, and it was determined that they were all within the allowed limits, implying that both tanks were safe for continued service. © 2026 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of Aleksandar Sedmak, Branislav Djordjevic, Simon Sedmak Dr. Simon Sedmak, ssedmak@mas.bg.ac.rs, Innovation Center of Faculty of Mechanical Engineering, Belgrade, Serbia

Keywords: structural integrity, non-destructive testing, oil storage tank, API, pressure vessel

1. Introduction Pressure vessels equipment structural integrity assessment is of utmost importance for their safe and reliable operation, especially in the case of severe potential consequences, as shown in Popović et al (2021), Aranđelović et

* Corresponding author. Tel.: +90-342-360-1200; fax: +90-342-360-7039. E-mail address: brdjordjevic@mas.bg.ac.rs

2452-3216 © 2026 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of Aleksandar Sedmak, Branislav Djordjevic, Simon Sedmak Dr. Simon Sedmak, ssedmak@mas.bg.ac.rs, Innovation Center of Faculty of Mechanical Engineering, Belgrade, Serbia 10.1016/j.prostr.2025.08.078