10th International Conference on Probabilistic Safety Assessment and Management 2010, PSAM 2010

'Critical infrastructures' came to the public domain in recent years. Moreover, it may be argued that modern society is exceedingly complex and highly interdependent. As a consequence of this, any disruption of 'critical infrastructures' can have severe consequences, as some recent events have shown. The paper presents a way to model such interdependencies. The approach has been the application of a Systemic Safety Management System (SSMS) model. Three oil and gas fields have been used to illustrate the modelling process by using the model. The model has shown that these facilities have 'horizontal' and 'vertical' interdependencies. However, more research is needed in order to explore the full potentiality of the model. For example, to apply it to other 'critical' infrastructures, such as transportation, communication, emergency services, etc. It is hoped that by conducting such analyses the model can help to gain a better understanding of the interdependence of 'critical infrastructures'.