OPTIMIZATION OF DETERMINING MAINTENANCE INTERVALS WITH THE MARKOV CHAIN METHOD TO MINIMIZE MAINTENANCE COSTS IN PT. BBI

PT BBI is a company engaged in producing machinery, industrial equipment, and foundry. has overgrown as that focuses on manufacturing delivering products such oil gas/refinery/petrochemical industries, power plans, iron castings, precision machinery centers, etc. uses various kinds of machines to support its production process. Some devices have often experienced damage caused downtime recent years, namely radial drilling overhead cranes. In addition, machine also causes cost overruns due can harm the company. Engine company's poor maintenance policy. Judging from these problems, planning system with suitable method will help equipment owned by PT. protected occurs periodically. The Markov Chain was chosen because it advantages over other methods produces more optimal costs regular scheduling system. processing results obtained total savings 33% applying proposed intervals every 5 months for once 3 10T cranes