This article aims to compile, describe and compare three different models taken from the literature describing
the causes of explosions in the crankcases of marine engines. Each of the models has a different level of detail
and was prepared with a different purpose. However, the same process, explosions in crankcases, was analyzed
in all cases. A statistical evaluation of the frequency of events leading to explosions, a model built using failure
mode and effects analysis (FMEA) and a model based on fault tree analysis (FTA) are described in turn. The
FTA model drawn from the literature formed the basis for further analysis. Values of important measures of all
elementary events of the fault tree were calculated using the Birnbaum reliability measure, Vesely-Fussell measure, Birnbaum structural measure, criticality measure and improvement potential. The percentage importance
values of all events determined using these importance measures were compared. The results obtained from the
application of each model were evaluated. The results of the models were compared with each other, and an
approach using all three models supplemented with diversion analysis was proposed.