Hitachi, Ltd.

Yuhiro Yoshida

Toshiyuki Miyake

Ichiro Harashima

Koji Shiroyama

Masatake Sato

An arrangement possible/impossible determination part of a piping order edit device: refers a pipe constituting a pipe list as a pipe subjected to determination; searches a main-branched pipe relationship database for a given pipe using identification information on the pipe subjected to determination as a search key; acquires a main pipe and a branched pipe corresponding to the searched given pipe; and, if there is a branched pipe positioned before the pipe subjected to determination in the pipe list or if there is a main pipe positioned after the pipe subjected to determination in the pipe list, the 'arrangement possible/impossible' of the pipe subjected to determination is set at 'impossible'.

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Hitachi, Japan

Yuhiro Yoshida