| 摘要 |
Provided is a flexible tube which is used to load fluid from a floating facility on the sea onto a tanker, which is suitable for transport of cryogenic fluid such as LNG, and which is capable of quickly and reliably detecting leakage of the fluid in the tube. Also provided is a structure for detecting leakage of fluid in a tube. A water impermeable and heat insulating layer (11) is provided on the outer periphery of a heat insulating layer (9). The water impermeable and heat insulating layer (11), together with the heat insulating layer (9), thermally insulates LNG flowing through a corrugated tube (3) from the outside of a flexible tube (1). Unlike the heat insulating layer (9), the water impermeable and heat insulating layer (11) is poor in liquid permeability, and fluid such as LNG hardly permeates the water impermeable and heat insulating layer (11). That is, the water impermeable and heat insulating layer (11) serves as a water impermeable layer between the inside and outside of the water impermeable and heat insulating layer (11). |
