Fadhel S. F., Alauldin N. A. and Ahmed Y. Y.
Application of mathematical model of multi state system for oil supply system is considered in this paper. This paper describes a method for estimation of changes of one component states and its influence on themultistate system reliability by dynamic reliability indices. We examine the oil supply system to allow a different number of states for the oil supply system and for each pipelineby proposing dynamic reliability indices for investigation of this system. These indices estimate the influence upon the multi-state system reliability, which is the oil supply system from an oil source to three stations through several oil pipelines, say four. The mathematical approach of logical differential calculus is used for analysing the change in the multi-state system reliability that is caused by modification of some system components states.