Maintenance Cost Analysis Using Cost of Unreliability (COUR) Method with Business Consequence Analysis : A Case Study of Shot Blast Machine

Abstract

Based on the historical damage data that has been obtained from the maintenance department of PT. XYZ, the Shot Blast MACH MWJ 9/10 machine is a machine that has a high degree of damage or unreliability which can cause losses for the company. The resulting loss can be time losses and also cost losses. The purpose of this study is to determine the value of company losses due to machine unreliability using the Cost of Unreliability method and Business Consequence analysis. From the results of COUR calculations, the cost caused by unreliable based on corrective time is IDR 3.299.079.131,24  and based on downtime or the length of time the subsystem stops is IDR 7.220.699.784,37. After COUR calculations, the next step is to make a business consequence. Business consequence is made for the company to use the business risk matrix and the results are all the subsystems, namely in the red category, so companies need to take action to prevent the higher consequences.