Sensitivity Study Using the FRANTIC Code for the Unavailability of a System to the Failure Characteristics of the Components and the Operating Conditions.

摘要

The purpose of this report is to show how the code FRANTIC II can be used to explore the sensitivity of the calculated unavailability of a system to various parameters. Several generic systems are analyzed in detail. The study illustrates the effect of uncertainties in the empirical data and helps assess the relative importance of collecting more accurate data for particular components. The study also helps in deciding whether it is worth improving a particular component or whether such improvement would have little effect. In addition, the impact of changing operational procedures can be assessed, and different operating strategies can be compared. Change of some procedures may yield only slight improvement, whereas in other instances a small change in timing may have a significant effect. Thus, this report shows how FRANTIC II may be a useful and powerful tool in the analysis of the reliability of a complex system, and in the determination of the more significant factors.