Abstract
This paper discusses containment designs of nuclear icebreakers and floating power plants. The purpose of this work is to reduce metal consumption and scope of welding through development of a containment design with stressed state almost free of moments. This study justifies the possibility of lower metal consumption and welding scope through shifting from containment designs based on stiffened plates to the containments made up by cylindrical panels: optimal curvature of their surfaces will be obtained as per the theory of thin shells and will depend on the ratio between containment geometry parameters. This shift from flat-plated containments to thinner and stiffener-free cylindrical ones paves way to lower metal consumption and significantly smaller amount of welding, or to application of cheaper steel grades if current thicknesses of rolled steels are preserved.
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