  In this paper we propose a dynamic model of Common Cause Failures (CCF) that
allows to generate common cause events in time. The proposed model is a
generalization of Binomial Failure Rate Model (Atwood model) that can generate
staggered failures of multiple components due to a common cause. We implement
the model using statechart formalism, a similar implementation can be adopted
in other modeling languages like Petri Nets or Hybrid Stochastic Automata. The
presented model was integrated in a Dynamic PRA study.
