DEVELOPMENT OF RISK BASED DECISION MAKING USING EXPERT OPINION FRAMEWORK FOR MOBILE MOORING SYSTEM

The second aim of this study is to develop a Methodology for Investigation of
Risk Based Maintenance (MIRBA) by using Bow Tie Analysis in order to classify the
risk level and mitigation plan, and to select the best maintenance strategy using AHP
(Analytic Hierarchy Process). Bow tie analysis is the combination method of the FTA
on the left side and ETA on the right side. Bow tie analysis is used to classify the risk
level of the mooring system. In order to select the best maintenance strategy for
mooring system that has multi criteria to be considered, AHP is applied to determine
the best maintenance strategy on the basis of likelihood and consequence. This study
conducts risk-based decision making coupled with the knowledge of the experts of
mooring system to evaluate the frequency of failure, class of consequence, mitigation
measurements and maintenance strategy based on their knowledge and experience.