| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To obtain a plant monitoring method for properly setting a threshold after plant inspection, reconstruction and the like and monitoring the plant by using the proper threshold. <P>SOLUTION: In the plant monitoring method for inputting plant process data and monitoring the plant using the threshold, process data before and after the plant inspection is statistically processed, a change in the statistically processed process data is determined, a new threshold is calculated from the average value and the standard deviation of the process data before and after the plant inspection is calculated when the change is small, and an alert is issued when the change is large. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
