| 摘要 |
PROBLEM TO BE SOLVED: To provide a double-hull tank whose inner and outer hulls are both made of FRP, which has a high strength, is capable of making stress concentration as small as possible, detecting highly accurately leakage and easily placing on a base when it is installed. SOLUTION: In the double-hull tank 1 consisting of the inner hull 2 made of the FRP, and the outer hull 4 formed through a leakage detecting space 3 to the inner hull 2 and made of the FRP, a ring-like reinforcing rib 6 is fitted inside in the radial direction of the inner hull 2. COPYRIGHT: (C)2006,JPO&NCIPI
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