| 摘要 |
PROBLEM TO BE SOLVED: To provide an LNG tank which is free from any peel fracture at a joint section of a resin-based material of a corner section even by cryogenic contraction at the time of leakage of LNG and has a secondary barrier tank that can be easily constructed. SOLUTION: In the LNG tank having an inner tank for storing the LNG, an outer tank for covering the inner tank, and the secondary barrier tank arranged between the inner tank and outer tank, the secondary barrier tank is formed by plane fiber-reinforced plastics 41 and 43, and a curved glass fiber-reinforced plastic 42. A Young's modulus of the curved glass fiber-reinforced plastic 42 is set to be 300 GPa or less at the temperature of -163°C. The plane glass fiber-reinforced plastics 41 and 43 and curved glass fiber-reinforced plastic 42 are piled up at respective end sections via an adhesive layer 21, and a post-hardening glass fiber-reinforced plastic 23 is joined by sticking the glass fiber-reinforced plastic 23 on the surfaces of the glass fiber-reinforced plastics 41, 42, and 43 so as to exceed a range of the adhesive layer 21. COPYRIGHT: (C)2008,JPO&INPIT
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