METHOD OF ANALYSIS OF RISK MANAGEMENT DIF FICULTIES IN A COLLECTIVE ACTIVITY - RAILWAYS MAINTENANCE

From a practical point of view, the aim of the analysis method ''Risk management modalities'' was to expose the different dynamics of the ac cidents had by track workers. The principal risk of this job is being ''struck by train''. Different organisational levels of a collective a ctivity and the occupational hazards disturbing the scenario of the si tuation, are described. These occupational hazards, alone or in intera ction, reduce the robustness of the system and the operator's adaptabi lity so that they can lead them to loose the control of danger. Referi ng to Hale and Glendon's model (1987), ''Behaviour in the face of dang er'', and comparing the accidents scenarii, five ''schema-types'' have been drawn out. They are characterised by different connections betwe en the work organisational phases, the hazardous circumstances, and th e difficulties of risk management and the control of danger that they generate. Exemples of the ''schema-types'' are given.