Reliability modelling and analysis of a single machine subsystem of a cable plant

This paper presents a real case analysis of a single machine subsystem of a cable plant using reliability modelling. Real maintenance data of a cable plant are collected for this purpose. Three types of maintenance are noted for the subsystem: repair, preventive maintenance random (PMR) and preventive maintenance scheduled (PMS). The subsystem is repaired upon failure, while preventive maintenance (PM) is carried out at random and scheduled basis. Optimum reliability indices such as mean time to subsystem failure (MTSF), availability of the subsystem, expected busy period of the repairman and expected number of subsystem repairs are obtained. Analysis is done using semi Markov processes and regenerative point techniques.