| 摘要 |
PURPOSE:To enable the lowering work of a tank bottom plate to be easily performed, by removing a supporting member during the time, the bottom plate is suspended by each post, and lowering the bottom plate after it is assembled by the supporting member mounted to a mounting bed vertically providing the many posts. CONSTITUTION:Many posts 13 are vertically provided on a bottom part cool keeping material 4a, and each post 13 removably mounts to its intermediate position the both ends of a supporing member 14 horizontally extending, further each post 13 sets mutually by its upper end parts a mounting bed 12 of truss construction. Then an inner tank bottom plate 15, after it is assembled on the mounting bed 12, is lifted through a hanging wire 20 by mounting a binding fixture 18 of the wire to a top part of each post 13. The bottom plate 15, after the supporting member 14 is all removed under this condition, is lowered finishing the lowering work. |
