Coaxiality requirements for the inner and outer cylinders of LNG double-layer storage tanks
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I have a question: For vacuum powder insulated double-layer tanks, what are the typical requirements regarding the coaxiality between the inner and outer cylinders? And what impact does coaxiality have on the radial support and the stress on the lifting straps?
First of all, I would like to state that I am not aware of the capacity of your storage tank; ours is 5000. The design drawings do not specify any requirements regarding coaxiality, as these tanks are welded on-site, and it is difficult to ensure such accuracy. I think 2 cm or less is acceptable. “I find it difficult to answer the question of \"how much impact coaxiality has on the forces acting on the radial supports and slings.\" Firstly, the pressure in LNG storage tanks is relatively low; secondly, the forces exerted on the tank walls and floor have little effect on the radial supports and slings.