| 摘要 |
The disclosed floating-roof storage tank has an articulated floor with an annular outer portion, an intermediate transition portion, and a raised inner portion. Pip e elements or equipment that may hang from an outer, annular section on the roof or extend from the tank wall fit around the outside of the transition portion. Liquid-tight seams connect the transition portion of the floor to the outer portion and to the raised inner portion of the floor, sealing off an inventory-reduction compartment beneath the raised portion of the floor. The inventory--reduction compartment is supported by a solid or liquid fill or b y a metal support structure. The raised inner portion of the floor may support the floating roof in a low position, and may support columns or the like that are used to support a fixed roof above the floating roof.
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