Stochastic Model on Three-Similar Units ThreePhased Mission System with FCFS Repairs Pattern

The paper allocates a stochastic model on threesimilar units three-phased mission system. developed system consists of working in parallel, series and parallel configurations respectively. Initially, the three similar are operational. Each component has only states: good, degraded failed. In this case, single repair facility that repairs first come serve (FCFS)pattern been thought of. Using Semi-Markov Process regenerative point techniques, various measures performance at each phase obtained. analyzed graphically taking particular case. Various conclusions made regarding reliability cost consideration as well for whole system(as combined Phase I, II, III).