This paper is devoted to model Safety Instrumented Systems (SISs) availability by Dynamic
Bayesian Networks (DBNs). The models integrate several parameters but the main concerns
of the study are the integration of test duration and test strategy. The proposed DBN are
generic and can be reused for assessing performance and testing the effect of some
parameters. More attention has been paid to the performance of the proof test, its
harmlessness and particularly its duration. The duration increases the model complexity …