An Improvement of the Decision Making Grid Model in Failure- Based Maintenance on RSG-Gas System/Components

Abstract
Maintenance is an important part of asset management, to control the risk of system or component failure in reactor operation. Preventive maintenance strategies involve maintenance before failure occurs so that unforeseen costs due to failure, such as delays in operations can be minimized. This paper discusses the integration of established maintenance planning, their limits and maps them in the decision matrix using the Decision Making Grid (DMG) model for the RSAS-GAS system/component. Optimization of decision-making system on maintenance is done as a consideration of safety management to be able to focus on maintenance so that the reliability of the system/component can be maintained. The methodology is limited by the concept of a maintenance planning that integrates maintenance and decision-making techniques with the DMG concept. Then extend the theoretical and formulation in DMG using tri-quadrant approach to cluster and categorize the variables. The research object is only performed on the main system/component of the operating system and the criticality level affects the operation of the reactor. Data obtained from RSG-GAS maintenance data (2010-2015), ie frequency and time range of damage to test compare the result. The results obtained that the approach using tri-quadrant shows better results in the DMG model.