Development of Maintainability Analysis Toolkit (MAT) for Analysing Plant Maintenance Data of Gas Processing Plant at Operational Phase

Maintainability analysis is a part of Reliability, Availability, and Maintainability
(RAM) analysis that is used to analyse the plant maintenance data at operational
phase in order to ensure the smooth running of a plant operation. Maintainability
analysis plays a big role in detecting which subsystems and equipments that
contribute the highest downtime and Mean Time to Repair (MTTR) in a system. By
recognizing the problems, it helps in preventing any unnecessary maintenance plan
to be performed on the less critical equipments and subsystem thus, reducing the
plant maintenance cost. The study is conducted due to the lack of software that can
perform the maintainability analysis since the maintenance plan is mostly focused on
reliability analysis instead of maintainability analysis. The objectives of the study are
to develop a framework that can capture maintenance data from the plant and to
develop a computer-based toolkit from the developed framework. Maintainability
analysis is often abandoned due to the tedious process in extracting the right
information needed from the various plant maintenance data. Therefore, a toolkit that
can perform the maintainability analysis of the plant maintenance data is needed. The
project uses Gas Compression Train (GCT) system maintenance data in the Gas
Processing Plant (GPP) as the ground for the analysis to take place. The analysis is
done by developing a toolkit by using Visual Basic Application (VBA) of Macros in
the Microsoft Excel that aims for a user-friendly interface with a thorough analysis of
maintainability. The output is the exploratory analysis that is presented in the form of
histogram, pie charts, pareto, and trend charts.