Reliability centered maintenance methodology for product in designimprovement phase : a case study on dough presser
Abstract
Maintenance strategy through the RCM had become increasingly important to the overall operation profit by reducing unnecessary maintenance routine. Maintenance strategy needs have become not just for the maintenance routine but also the design improvement. However, there was no RCM methodology available for the system in design improvement phase. The
RCM methodology is not always fits all equipment phase. One of the solutions is using RCM
methodology specific for the design improvement phase. The methodology designed to reduce
unseen failure risk. The objectives of the research is to validate the methodology through the
specific objectives which are to study the effect of the root cause analysis tool change from
FMEA to FTA, to examine the finding different between Block diagram and FTA tools and
eventually to investigate the benefit of RPN and criticality results integration. The
methodology involves four mains phases which are the component classification, root cause
analysis, failure risk and criticality analysis and finally the maintenance strategy
determination. The change in root cause tool provides the detection towards the relation
between the root causes. The qualitative result verification between Block diagram and FTA
shows the gap between the tools. Investigation of the RPN and criticality present the situation
where the quantitative result has to be integrated. Observed the proposed RCM methodology
has provided the opportunity to minimize the risk in design improvement stage