Application of fuzzy-sets methods for calculating the reliability of safety systems of NPP

Abstract

For the analysis of realiability of the elementary components devices or such analysis for the hole systems many methods based of the probabilistic calculations were created. On of the most interesting method is the fuzzy-sets method. It's particular adventage lay in the possibility of reliability calculations in situations where the adegate determination of device failure is impossible. In practice, often the change in working mode of one component implies the worthening of system operation but is not yet considered as the failure-case often uncoutered in NPP. The analysis is basing on the determination of functions which should be fulfield by the system. Such functions are form by simple elementary basic components.