ABSTRACT
This paper deals with a system of two unit (Original and duplicate) cold standby system with repair, preventive maintenance and priority in operation to original unit. Initially original unit is operative and duplicate unit is kept as cold standby. Duplicate unit under goes for preventive maintenance after a maximum operation time. Priority in operation is given to original unit. There is a single server who visits the system immediately as per requirements. The random variables associated to failure time, preventive maintenance time and repair time are statistically independent. The distributions of failure time and maximum operation time of the units follow exponential while that of preventive maintenance and repair times are taken as arbitrary with different probability density functions. Various reliability measures are obtained in steady state by using regenerative point technique. Graphs are drawn to depict the behavior of MTSF, availability and profit of the model for a particular case.
