Proceedings of 41st Danubia-Adria Symposium Advances in Experimental Mechanics (pp. 123-126)
АУТОР(И) / AUTHOR(S): Vladimir Milovanović 
, Stefan Dikić , Saša Spasenić, Mileta Ristivojević , Sreten Spasenić, Aleksandar Bodić , Miloš Pešić
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DOI: 10.46793/41DAS2025.123M
УВОД / INTRODUCTION:
Above-ground cylindrical steel tanks are indispensable assets in water and wastewater infrastructure. In equalization services, they buffer diurnal and industrial inflow variability, dampen “shock” pollutant loads, and stabilize downstream treatment functions, consistently shown to improve effluent quality and operational resilience.
Even when tanks are designed and operated within code provisions, long-term performance depends on how structural demand interacts with the service environment and maintenance practices. The technical literature documents characteristic failure modes – loss of containment by corrosioninduced wall thinning, local joint distress, and roof/shell instabilities – through forensic case studies that combine inspection, measurement, and finite-element analysis to reconstruct the damage sequence and define preventive measures.
Wastewater headspaces and wetted zones present particularly aggressive conditions for carbon and stainless steels due to variable pH, dissolved sulfides, chlorides, and microbiologically influenced corrosion. Recent reviews emphasize corrosion monitoring and mitigation as central to lifecycle reliability of storage and process tanks in treatment facilities.
Within this broader context, this study focuses on durability-oriented design, inspection, and riskinformed maintenance programs for tanks operating in wastewater service, drawing on established roles of equalization, observed failure mechanisms, and evidence from prior research and case histories.
КЉУЧНЕ РЕЧИ / KEYWORDS:
ПРОЈЕКАТ / ACKNOWLEDGEMENT:
This research is partly supported by the Science Fund of the Republic of Serbia, #GRANT No 7475, Prediction of damage evolution in engineering structures – PROMINENT, and by the Ministry of Science, Technological Development and Innovation, Republic of Serbia, Agreement No. 451-03-136/2025-03/200378 and Agreement No. 451-03-137/2025-03/200107 and Contract No. 451-03-136/2025-03/200135.
The authors wish to acknowledge and thank the company Kontrol Inspekt D.O.O. in Belgrade for support and for encouragement in the research realization.
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