METHOD OF ANALYSIS OF RISK MANAGEMENT DIFFICULTIES 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 accidents had by track workers. The principal risk of this job is being ''struck by train''. Different organisational levels of a collective activity and the occupational hazards disturbing the scenario of the situation, are described. These occupational hazards, alone or in interaction, reduce the robustness of the system and the operator's adaptability so that they can lead them to loose the control of danger. Refering to Hale and Glendon's model (1987), ''Behaviour in the face of danger'', and comparing the accidents scenarii, five ''schema-types'' have been drawn out. They are characterised by different connections between the work organisational phases, the hazardous circumstances, and the difficulties of risk management and the control of danger that they generate. Exemples of the ''schema-types'' are given.