The meaning,frame,main content and application foreground of venture maintenance are expounded,so the conclusion is get that venture maintenance should be the important measure for electric device maintenanc

After introducing the definition and characteristics of risk-based maintenance (RBM), the authors describe the process of risk evaluation of equipment and put forward the maintenance strategies based on risk evaluation.

The semi-quantitative risk-based maintenance for boiler heating surface is fit for maintainer in power plant especially.

Aiming at the special demand of aviation domain to fault missed detection risk, the undesirable false alarms and undesirable lemissed detections risk problem of the chi-square test was searched, and material example and simulation analyzing indicate that snapshot algorithm is incapable of satisfying the aviation requirements for detection risks.

This paper lays the emphasis on the anlaysis of maleriality and detection risks influence on substantive tests,through the scientifically designing time,nature and scope of it,so as to lower the entire auditing risk into acceptable level.