Reliability analysis of a two unit system

The aim of the paper is to present a reliability analysis principles and modeling techniques to technological systems. The paper thus proposes a two unit cold standby system with the concept of rest period of the repairman. A system with a single repairman is analyzed, where repairman is given rest when tires during the job and the system waits till his recovery. Some important reliability indices are obtained by using semi-Markov processes and regenerative point techniques. Expected total profit incurred to the system is also obtained. Mean times to system failure and profit results are demonstrated graphically for hypothetical values.