Optimization of Maintenance Budget Using Condition Base Maintenance (CBM) Method based on Asset Management Principles

Abstract

The Health Index method is a maintenance method that combines preventive (time-base) and predictive (condition-base) methods in determining the maintenance priority scale by considering important factors in asset criteria, namely asset class, risk level, and customer service class profile [1], [2]. In this study, an analysis of the effectiveness of using the Health Index method was carried out as an effort to increase the effectiveness of budget use while maintaining network performance in the maintenance phase of the asset cycle. Before the application of this method, the inspection and maintenance process was carried out based on a routine schedule or maintenance plan with follow-up under the findings. After the maintenance work is carried out using the Health Index Method, the screening stage is carried out including historical performance data, utility levels with parameters in the form of load profiles, and risk levels outlined in an application Integration and maintenance with setup parameters referring to the Circular of the Board of Directors of PT PLN (Persero) Number: 0018.E / DIR / 2014 so that in its implementation it can reduce the volume of inspections in 2022 by 0.75% / 63.27 Kms and the implementation of maintenance programs Health Index by prioritizing inspection work and maintenance follow-up based on asset management principles can reduce the use of the 2022 maintenance budget by 7% or worth 697 million while still evaluating the level of equipment effectiveness or Overall Equipment Effectiveness (OEE) in the maintenance of 20kV SUTM &; SKUTM overhead line assets.