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Being the pipe arrangement structure which penetrates completely the container outer hull and the pipe arrangement structure which
Being the pipe arrangement structure which penetrates completely the container outer hull and the pipe arrangement structure which
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机译：作为完全贯穿容器外壳的配管结构和
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摘要
PROBLEM TO BE SOLVED: To provide a method for easily replacing a nozzle or the like to be used for spraying or the like of a super-cooled LPG in an LPG storage tank, and a piping structure for it.;SOLUTION: The method comprises an outer pipe provided penetratingly an outer shell of a container and an inner pipe to be inserted to the outer pipe and attachable/detachable to/from an external piping system. It is for replacing the inner pipe in the piping structure in which the outer pipe and the inner pipe can be attached/detached at a position closer to the outer shell of the container from an attaching/detaching part of the external piping system and the inner pipe. The removal process for an existing inner pipe has a process to close the existing pipe, a process to separate the existing inner pipe from the external piping system, a process to separate the existing inner pipe from the outer pipe, and a process to pull out the existing inner pipe from the outer pipe while a purge gas is being fed in the pipe of the outer pipe. The mounting process for a newly constructing inner pipe has a process to insert the newly constructing inner pipe to the outer pipe while the purge gas is being fed in the pipe of the outer pipe, a process to join the newly constructing inner pipe and the outer pipe, and a process to join the newly constructing inner pipe and the external piping system. It also has a process to release the closing of the newly constructing inner pipe.;COPYRIGHT: (C)2004,JPO&NCIPI
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