![]() Stress-strain state parameters of tank structures were obtained at the critical levels established in API-653. Based on the finite element method, the uneven settlement development process of a storage tank was modeled. ![]() The calculated allowable settlement levels were compared with those established by Russian standards. The allowable uneven settlement was calculated for a vertical steel tank (VST-20000) according to API-653, a standard of the American Petroleum Institute. standards for specifying the allowable settlement of storage tanks used in Russia. ![]() The aim of this study is to theoretically justify and to assess the possibility of applying the U.S. There is an increasing need for harmonizing regulatory documents. Russian and foreign regulatory documents have different requirements for strain limits of metal structures. Up to 60% of storage tanks in operation have uneven settlement of the outer bottom contour, which often leads to accidents. ![]()
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