Risk management model for industrial plants maintenance

The paper proposes a methodology for maintenance risk management of industrial plants, considering at the same time safety of labour and servicing workmen. Thanks to a 3D framework of hierarchical structure, the model allows an analysis on different levels of detail and enables to get information on risk criticalities and derivation, both from strategic and operational point of view. Furthermore, working as a decision support system for maintenance strategies and accident prevention, during and after servicing, it gives useful indications to plan interventions and increase safety. To verify the applicability of the methodology, a case study of a food industrial plant is developed. The results easily show the critical risks both for equipment and departments, while the 3D structure, through its levels of analysis, identify the most dangerous situations of the different areas, determining strategic and operational lines of actions