| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To solve such a problem with a plant that the plant may be stopped if a defective device is repaired after failure depending on the type of the defective device, operational loss may occur if this occur, the range of failure may be extended due to the induced defects of related devices if the failure of one device is left unrepaired, and the entire part of the plant may be damaged. <P>SOLUTION: The information on the plant devices is always taken in and inspected, or the replacement timings thereof are calculated to cope with the failure of the plant before the plant devices get out of order. <P>COPYRIGHT: (C)2004,JPO</p> |
