Modelling of System Failures in Gas Turbine Engines on Offshore Platforms

Abstract

The system reliability of gas turbine engines on offshore platforms, maintained (i.e. repaired) upon process failures, is considered in this study. A set of condition monitoring (CM) data (i.e. failure events) of a selected gas turbine engine is considered, where the system maintenance actions with minimum repair conditions (i.e. that should not disturb the failure rate intensity) are assumed. A nonhomogeneous Poisson process is used to model the age dependent reliability conditions of a gas turbine engine and maximum likelihood estimation (MLE) for calculating the same model parameters is implemented. Finally, a summary on the system behavior under failure intensity, mission reliability and mean time between failures (MTBF) is also presented in this study.