| 摘要 |
<p>PURPOSE:To enhance the safety upon occurrence of a sloshing, by attaching a cold insulating member formed of hard urethane boards to the inner surface of a roof panel, and by providing a seal plate on the inner surface of the cold insulating material. CONSTITUTION:Glass wool 8 and hart urethane boards 10, 15, 16 are mounted on the inner surface of a roof panel 1. A seal plate 19 having a sealability and having corrugation 18 in the joint glass wool 8 is provided on the inner surface of the innermost hard urethane board 16. The boards 10, 15, 16 have a total thickness L1 while the ratio between the thicknesses L2, L3 of the outermost board 10 and the other boards is set, thereby the outermost board 10 has a such a thickness L2 that the inner surface of the outermost board 10 can hold a temperature of at least -45 deg.C.</p> |
