Pert method in material’s flow continuity improvement in convergent production structure

In the article there is a presentation of PERT method in calculation of production tasks beginning time. Main aim was to point out activities which determine production’s beginning in convergent production system.In analysis there was an usage of complex systems theory and there were several stages of decomposition into single production streams. In the work there is a presentation of a model which sets the moment of production processes beginning in a production structure which is characterized by high level of processes’ repetitions with different production parameters.