| 摘要 |
PROBLEM TO BE SOLVED: To dispense with the work on a large scale even when a problem is found on a temperature detecting means mounted in a tank, and to improve the maintenance workability. SOLUTION: Plural pipes are penetrated through a tank 3 storing the LNG liquid, from the external in a state that their lower end positions are different from each other, electric wires 10 respectively having temperature sensors 11 are mounted inside of the pipes, the pipes are communicated to each other to seal a H2 gas inside of plural pipes, plural temperature sensors 11 different from each other in the positions of liquid surfaces are mounted independently from the tank 3 to prevent the intrusion of the fuel in the tank 3 into the pipes, the tank can cope with a problem of the temperature detecting means without the work on a large scale, and the maintenance workability can be improved.
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