Research on the Maintenance Decision Model for Marine Equipment Based on Analytic Network Process

Abstract Maintenance policy selection for vessel equipment is a multiple criteria decision making. To ensure security, reliability and efficiency of vessel equipment, a maintenance decision model based on risk, availability and cost was proposed according to the characteristics of vessel equipment maintenance. For modeling, analytic network process (ANP) has been employed. And the maintenance policies considered here are Corrective maintenance, Time-based maintenance and Condition-based maintenance. Meanwhile, due to the language of expert evaluation has the characteristics of uncertainty and fuzziness to some extent, interval number was introduced to improve the model. The case study of the fuel system of a certain type diesel engine is used to illustrate the methodology, and the optimized maintenance policies of the components are listed at last.